M. HOCINI Abdesselam

Prof

Directory of teachers

Department

Departement of ELECTRONICS

Research Interests

Specialized in Departement of ELECTRONICS. Focused on academic and scientific development.

Contact Info

University of M'Sila, Algeria

Email : abdesselam.hocini@univ-msila.dz

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Recent Publications

2024-12-13

Design and Analysis of High Sensitive Temperature Nanosensor Based on 2D Photonic Crystals

This work describes a unique photonic crystal (PhC) sensor developed to quantify analyte concentrations, with a special emphasis on temperature readings. The suggested sensor uses a two-dimensional (2D) triangular lattice design with a hollow ring structure to improve sensitivity. Transmission spectra and sensitivities were investigated for a variety of refractive indices using 2D Plane-Wave Expansion (PWE) and Finite-Difference Time-Domain (FDTD) modeling. The device showed sensitivities of 518, 524, and 521 nm/RIU for refractive indices of 1.02, 1.04, and 1.06, respectively. In addition, it had a thermal sensitivity of 0.167 nm/°C for temperature readings. This sensor has potential uses in medical diagnostics and bioanalytical research.
Citation

M. HOCINI Abdesselam, (2024-12-13), "Design and Analysis of High Sensitive Temperature Nanosensor Based on 2D Photonic Crystals", [national] Conference: National Conference on Artificial Intelligence in Electrical Engineering(NCAIEE’2024)At: , Medea, Algeria

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Refractive Index Biosensor based on a Two-Dimensional Photonic Crystal for Diagnosis of Diabetes

The current research introduces a groundbreaking photonic crystal biosensing device intended for the precise analy- sis of analyte levels, specifi cally targeting glucose concentration in aqueous mediums. To enhance sensitivity, the proposed biosensor employs a two-dimensional triangular lattice architecture featur- ing a hollow ring. Our examination consists of reviewing the transmission spectra and sensitivity through various refractive indices by using both 2D photonic band structure (2D-PWE) and fi nite-difference time-domain (FDTD) simulations. The biosensor reveals sensitivities of 417, 425, and 418 nm/RIU for refractive indices of 1.04, 1.08, and 1.12, respectively. Furthermore, the biosensor demonstrates an effective sensitivity of 429 nm/RIU specifi cally for glucose concentration assessment. This instrument holds potential applications in medical diagnostics and bioana- lytical procedures. Index Terms—Photonic crystal biosensor, bandgap (PBG), sen- sitivity, fi nite difference time-domain (FDTD), refractive index, glucose.
Citation

M. HOCINI Abdesselam, (2024-12-13), "Refractive Index Biosensor based on a Two-Dimensional Photonic Crystal for Diagnosis of Diabetes", [national] Conference: National Conference on Artificial Intelligence in Electrical Engineering(NCAIEE’2024)At: , Medea, Algeria

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2024-10-25

desining hight sensitive RI sensor Photonic crystal

desining hight sensitive RI sensor Photonic crystal
Citation

M. HOCINI Abdesselam, (2024-10-25), "desining hight sensitive RI sensor Photonic crystal", [international] 11th International Conference on Computational and Experimental Science and Engineering (ICCESEN 2024) , Turkey

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2024-09-11

World's Top 2% Scientists

Stanford University's “Top 2% Scientists list” is a prestigious ranking that highlights the most influential researchers across a broad range of scientific
Citation

M. HOCINI Abdesselam, (2024-09-11), "World's Top 2% Scientists", [national] Stanford

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2024-09-02

A tunable graphene dual mode absorber for efficient terahertz radiation absorption and sensing applications

This paper presents a novel plasmonic graphene absorber designed for the terahertz frequency range, utilizing a dual mode optical filter configuration. The absorber consists of a layered periodic array comprising gold, SiO₂ and graphene. Key components include a graphene disk and four strategically positioned graphene stripes on a SiO₂ substrate. An underlying gold layer enhances the absorption efficiency by serving as a reflector. The structure is numerically simulated using the 3D finite difference time domain (FDTD) method. A comprehensive parametric study has been conducted to optimize the absorber's performance. The simulation results demonstrate near perfect absorption at 4.16 THz and 5.88 THz. This innovative design enables efficient absorption of terahertz radiation due to the plasmonic resonance effects of the graphene components. Additionally, the absorption frequency can be dynamically adjusted by altering the chemical potential of graphene through applying an external bias voltage. The tailored geometry and material composition result in a compact absorber with high absorption values and tunability. Detailed performance analysis through numerical simulations demonstrates the absorber's potential for applications in sensing, imaging, and communication systems operating in the terahertz frequency range.
Citation

M. HOCINI Abdesselam, Nastaran Korani, Saeed Mohammadi, , (2024-09-02), "A tunable graphene dual mode absorber for efficient terahertz radiation absorption and sensing applications", [national] Diamond and Related Materials , Elsevier

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2024-08-13

High Sensitivity Biosensor Photonic Crystal Focused on Detecting the Concentration of the Biological Analytes

The performance and response characteristics of simulated optical biosensor have been greatly enhanced in this work. The results were obtained by evaluating three different structures, each varying in the number of holes surrounding the cavity. The guide-cavity coupling's structural and dimensional characteristics were varied for an effective comparative study. The high sensitivity quality of this optical biosensor was achieved using large transmission rate. The results showed sensitivity around 800 nm/RIU in the first version, 800 nm/RIU in the second version and 700 nm/RIU in the last version. Furthermore, the design parameters were optimized by finite difference time domain (FDTD) method.
Citation

M. HOCINI Abdesselam, Mohamed Aboutaleb, Hamza Lidjici, Abdelhalim Zoukel, Asma Benchiheb, , (2024-08-13), "High Sensitivity Biosensor Photonic Crystal Focused on Detecting the Concentration of the Biological Analytes", [national] Progress in Electromagnetics Research C , Pier

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2024-05-25

A novel connected structure of all-optical high speed and ultra-compact photonic crystal OR logic gate

A new connected structure of an all-optical “OR” logic gate realized with photonic crystals is proposed in this study. The structure is based on coupling the input guides with two microcavities; the unit cell of the structure is designed to achieve a band gap around the communication wavelength (i.e., 1.55 µm). The performance of the structure results in transmission efficiency and low losses. This compact size logic gate is considered an important element in the integration of a nanoscale photonic device
Citation

M. HOCINI Abdesselam, Roumaissa Derdour, Mohamed Redha Lebbal, Souheil Mouetsi, , (2024-05-25), "A novel connected structure of all-optical high speed and ultra-compact photonic crystal OR logic gate", [national] Journal of Optical Communications , De Gruyter

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2024-04-22

Multiple Fano resonator based on photonic crystal waveguide coupled with two micro-cavities for biomedical sensing application

In order to acquire a miniature refractive index (RI) biosensor with high sensitivity, fast and selective for ultra-low concentrations of molecules, a new Photonic Crystal (PhC) biosensor based on a waveguide coupled to a Fano resonator is proposed for cancer cells detection. An optimized structure of the biosensor can detect cells cancers (Besal, Hela, Jurkat and PC12) in a biological solution deposited on the surface of the resonator. The detection mechanism uses the refractive index as a detection element. The performance of the proposed biosensor is studied by analyzing the variations in the transmission spectrum of different normal and cancer cells. The proposed structure is multimode PhC, with silica as a dielectric material. The finite element method (FEM) have been implemented for studying and investigating the numerical values. The simulation results display that the proposed biosensor attains spectral sensitivities of '513.12 nm RIU−1', '587.28 nm RIU−1 ', '702.35 nm RIU−1 ' and '690.57 nm RIU−1 ' corresponding to Hela cells, PC12 cells, Basal cells and Jurkat cells, respectively. And he qualilty factor Q of the Fano resonance mode can reach 3040.26. Our optimized design ensures easy fabrication with ongoing techniques. This study may open a new way for the development of integrated optical circuits and biosensing.
Citation

M. HOCINI Abdesselam, (2024-04-22), "Multiple Fano resonator based on photonic crystal waveguide coupled with two micro-cavities for biomedical sensing application", [national] Physica Scripta , IOP Publishing

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2024-03-01

Ultracompact quarter-mode SIW self-hexaplexing antenna for C-band and X-band applications

In this letter, an ultracompact substrate integrated waveguide (SIW)-based hexaplexing antenna, operating at six distinct frequencies (4, 5.8, 6.6, 7.8, 9.8, 10.68 GHz) is proposed. It is made up of four compacted square-like quarter-mode SIW (S-QMSIW) resonators, and two triangular (T-QMSIW) elements. Their compactness is accomplished through the inclusion of rectangular slots at the closed-off ends of each resonator, resulting in increased shunt capacitance. As such, the resonance frequencies shift to the lower spectrum of their fundamental frequency ranges, forming the full hexaband system, with only 0.14λ2g in size. In addition, the minimum attained isolation level is 27 dB. At the intended frequencies, the maximum realized gain and efficiency are 4.9, 5.11, 5.4, 5.43, 5.32, and 5.3 dBi, for gain; 94%, 94.3%, 95%, 96.5%, 94%, and 95.7% for efficiency, at 4, 5.8, 6.6, 7.8, 9.8, and 10.68 GHz, respectively. In addition, a reliable equivalent circuit model is designed to confirm the proposed methodology, and the final design is fabricated. The simulation results are in good agreement with the measured ones. The proposed design proved its flexibility in terms of independent frequency tuning, thus making it an appealing choice for ultracompact communication systems.
Citation

M. HOCINI Abdesselam, (2024-03-01), "Ultracompact quarter-mode SIW self-hexaplexing antenna for C-band and X-band applications", [national] IEEE Antennas and Wireless Propagation Letters , IEEE

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2024-02-01

Design and simulation of 1× 2, 1× 4 and 2× 8 microstrip patch antenna arrays based on photonic crystals for improved gain performance in THz

In a wireless communication system, a microstrip patch antenna is gaining importance as a most powerful technology trend and it is applicable for the development of low-cost, minimal-weight, low-profile and high-performance antenna. This paper presents the design and the analysis of 1 × 2, 1 × 4 and 2 × 8 rectangular microstrip patch antenna (RMPA) arrays based on the photonic crystals for improved gain performance and high radiation characteristics compared to ones that are designed based on the homogeneous substrate in the frequency range of 0.250.55 THz. The design of the proposed antenna arrays based on the photonic band gap (PBG) and the homogeneous substrate structures is made by using the designed single-element RMPA as the basic building element, and then, they were fed by the parallel feeding structure. The designed antenna arrays were simulated using CST Microwave Studio software and …
Citation

M. HOCINI Abdesselam, (2024-02-01), "Design and simulation of 1× 2, 1× 4 and 2× 8 microstrip patch antenna arrays based on photonic crystals for improved gain performance in THz", [national] Optical and Quantum Electronics , Springer

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An ultra-wideband bandstop plasmonic filter in mid-infrared band based on metal-insulator-metal waveguide coupled with an hexagonal resonator

An ultra-wideband band-stop plasmonic filter (UWB-BSF) in mid-infrared (MIR) range based on metal–insulator–metal (MIM) waveguide coupled with a hexagonal resonator is proposed in this work. Using RSoft CAD commercial software, the designed BSF is numerically and theoretically investigated by the 2D Finite-Difference Time-Domain method. To enhance the BSFs system in mid-infrared, obtaining ultra-wide bandgap width (UWB) with the maximum passband transmission at the left and right of the bandgap and a high value of the rectangular coefficient, we increase the number of hexagonal cavities. Hence, the number of hexagonal resonators controls the range of the filtered wavelength of the BSFs system. In the case of two hexagonal-shaped resonators, the Fano resonance appears on the left and right sides of the bandgap, forming a U-shaped transmission spectrum, which is very helpful for improving the performance of the band-stop filter. Furthermore, by changing the geometric parameters of the hexagonal cavities the filtered wavelength range is shifted toward the near-infrared (NIR) band. The center wavelength of the bandgap of the proposed nano-stop-band filter is adjustable by varying the geometric parameters of the structure. This device operates in the near-infrared (NIR) and mid-infrared (MIR) wavelength ranges. With a larger bandgap width and tunable performance, this proposed nanostructure provides an advantageous application for plasmonic integrated circuits and broadband transmissions.
Citation

M. HOCINI Abdesselam, Imane Zegaar, Hocine Ben Salah, , (2024-02-01), "An ultra-wideband bandstop plasmonic filter in mid-infrared band based on metal-insulator-metal waveguide coupled with an hexagonal resonator", [national] Journal of Optics , Springer

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2024-01-02

Modeling and Simulation of Photonic Crystal Sensor for Drinking Water Quality Monitoring.

Photonics crystal sensors, sensitive to light, play a crucial role in discerning minute alterations in a material’s refractive index, finding widespread application, such as in monitoring drinking water quality. Our objective is to fashion a sensor based on a 2D photonics crystal structure and scrutinize optical transformations induced by variations in the bacteria’s refractive index as light traverses the sensor structure. Leveraging Rsoft’s simulation capabilities, we assessed transmission spectra, observing shifts in the bacteria’s refractive index and their consequential impact on the light signal’s frequency and wavelength within the sensor structure. The simulations unequivocally demonstrate that fluctuations in the bacteria’s refractive index significantly affect the light signal’s frequency and wavelength. Consequently, the study underscores the efficacy of the Rsoft-designed optical sensor in discerning bacterial presence in contaminated water, achieving an average sensitivity of 834.344 nm/RIU. In conclusion, the study establishes the success of the optical sensor crafted with Rsoft software in detecting bacteria in polluted water. By monitoring optical alterations during light traversal, variations in the bacteria’s refractive index are translated into discernible shifts in the light signal’s frequency and wavelength, facilitating effective bacteria detection.
Citation

M. HOCINI Abdesselam, (2024-01-02), "Modeling and Simulation of Photonic Crystal Sensor for Drinking Water Quality Monitoring.", [national] Progress in Electromagnetics Research C , The Electromagnetic Academy (USA)

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2023-12-12

2D photonic crystal biosensing platform based on coupled defective ring-shaped microcavity-two waveguides for diabetes detection using human tears

This paper describes a two modes refractive index sensor based on photonic crystals (PhCs) for detecting diabetes in human tears samples. PhC-based biosensors are promising platforms to detect the analyte due to their high sensitivity and selectivity, low cost, and can be easily integrated with other electrical components. The proposed PhC biosensor consists of two waveguides coupled with one defective ring-shaped microcavity, the microcavity was created by removing seven lattice holes and shifting the inner ring-shaped hole vertically down by 0.45a, the whole microcavity system is separated from the two waveguides by three holes. The achieved sensitivity for this device comes out to be 659.83 nm RIU−1. The Q-factor, figure of merit (FOM), and limit of detection (LOD) were about 106, 106 RIU−1,and 10−7 RIU respectively. In general, our results revealed that the proposed device has appreciable potential to be used as a powerful tool to detect diabetes using tears. Furthermore, the proposed biosensor can be used as an alternative to painful pinpricks for diabetes testing. A brief comparison between the presented design and related literatures for detecting diabetes using refractive index biosensors is made to ensure effectiveness and the validity of the proposed biosensor. The high performance and simple design of the proposed biosensor make it a suitable candidate for bio-sensing applications.
Citation

M. HOCINI Abdesselam, (2023-12-12), "2D photonic crystal biosensing platform based on coupled defective ring-shaped microcavity-two waveguides for diabetes detection using human tears", [national] Physica Scripta , IOP Publishing

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2023-11-04

Ultra wideband bandstop plasmonic filter in the NIR region based on stub resonators

In this study, we propose an ultra-wideband bandstop filter (UWB-BSF) using a plasmonic MIM waveguide coupled with a stub cavity that is investigated using finite-difference time-domain (FDTD). Air and silver are used as insulators and metals, respectively; silver is characterized by the Drude model. The structure can filter the optical telecommunication wavelengths of 1550 nm and 1310 nm. The transmission peak and the resonance wavelength of the basic structure can be tuned by varying the stub resonator's length and width. In order to improve the filtering function of the bandstop filter at broad bandwidth in the NIR region with maximum transmission peak, the number of stub resonators is increased to two, three, and four stubs with properly studied lengths and a proper horizontal distance between each two stubs. The bandwidth is enhanced from 350 nm, with two stubs, to 620 nm, with three stubs, and 770 nm, with four stubs, respectively. The corresponding filtered wavelength ranges are [1600 nm–1950 nm], [1330 nm–1950 nm] and [1180 nm–1950 nm] respectively. Moreover, with the increase in the number of stubs, the center wavelength achieves a blue shift to lower wavelengths. Further, the paper provides significant applications for plasmonic bandstop filters in highly integrated optical circuits.
Citation

M. HOCINI Abdesselam, Imane Zegaar, Hocine Bensalah, Mahieddine Lahoubi, , (2023-11-04), "Ultra wideband bandstop plasmonic filter in the NIR region based on stub resonators", [national] Physica Scripta , IOP Publishing

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2023-09-01

A plasmonic refractive index sensor with high sensitivity and its application for temperature and detection of biomolecules

In this paper, a metal–insulator–metal waveguide is paired with a hexagonal irregular ring resonator to construct a high sensitivity refractive index plasmonic nano-sensor in this work. The sensing properties of the proposed design are studied using a numerical solution in the finite-difference time-domain. The acquired results reveal a linear connection between the material's refractive index (RI) and the wavelength of resonances. Furthermore, the maximum linear sensitivity for the second mode is S = 2417 nm/RIU, with a figure of merit (FOM) of 38, whereas the highest for the first mode is S = 1002 nm/RIU, with a FOM of 28.6. With a sensitivity of 1.02 nm/°C, this sensor is also being examined as a temperature sensor. When ethanol is employed as the measuring liquid, the sensor's operating temperature range is between—114.3 and 78 °C. This device can create a path toward RI by being highly sensitive for the label-free diagnosis of different molecules and providing temperature sensing abilities. It can also be used in microchip processors and has a wide spectrum of biological applications.
Citation

M. HOCINI Abdesselam, djamal.khedrouche@univ-msila.dz, , (2023-09-01), "A plasmonic refractive index sensor with high sensitivity and its application for temperature and detection of biomolecules", [international] Journal of Optics , Springer

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2023-08-01

Multiple Fano resonance modes in an ultra-compact plasmonic waveguide-cavity system for temperature sensing

Multiple Fano resonance modes in an ultra-compact plasmonic waveguide-cavity system for temperature sensing
Citation

M. HOCINI Abdesselam, (2023-08-01), "Multiple Fano resonance modes in an ultra-compact plasmonic waveguide-cavity system for temperature sensing", [international] Optical and Quantum Electronics , Springer

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2023-07-12

Ultra-compact Quarter-Mode SIW Self-Hexaplexing Antenna for C-band and X-band Applications

In this paper, an ultra-compact substrate integrated waveguide (SIW)-based hexaplexing antenna, operating at six distinct frequencies (4, 5.8,6.6,7.8, 9.8, 10.68 GHz) is proposed. It is made up of four compacted square-like quarter-mode SIW (S-QMSIW) resonators, and two triangular (T-QMSIW) elements. Their compactness is accomplished through the inclusion of rectangular slots at the closed-off ends of each resonator, resulting in increased shunt capacitance. As such, the resonance frequencies shift to the lower spectrum of their fundamental frequency ranges, forming the full hexa-band system, with only 0.14 λ2g in size. In addition, the minimum attained isolation level is 27 dB. At the intended frequencies, the maximum realized gain and efficiency are 4.9, 5.11, 5.4, 5.43, 5.32, and 5.3 dBi, for gain; 94, 94.3, 95, 96.5, 94, and 95.7% for efficiency, at 4, 5.8,6.6,7.8, 9.8, and 10.68 GHz, respectively. In addition, a reliable equivalent circuit model is designed to confirm the proposed methodology, and the final design is fabricated. The simulation results are in good agreement with the measured ones. The proposed design proved its flexibility in terms of independent frequency tuning, thus making it an appealing choice for ultra-compact communication systems.
Citation

M. HOCINI Abdesselam, (2023-07-12), "Ultra-compact Quarter-Mode SIW Self-Hexaplexing Antenna for C-band and X-band Applications", [international] IEEE Antennas and Wireless Propagation Letters , IEEE

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2023-06-01

Design and analysis of a 1 × 2 microstrip patch antenna array based on photonic crystals with a graphene load in THZ

Advances in recent communication systems require minimal weight, low cost, high performance and low-profile antenna to meet the demand for next generation wireless communication devices. Due to the saturation velocity, high electrical conductivity and high mobility, graphene patch antennas are preferably used in the Terahertz band region (THz). On the other hand, MIMO antenna is usually required to compensate for the high path losses and atmospheric attenuation in THz frequency band spectrum and to offer higher data rates. In this work, a fractal MIMO antenna structure is placed on SiO2 substrate embedded with Photonic Band Gap crystal (PBG). The designed MIMO antenna structure obtains an impedance bandwidth of 1590 GHz covering an effective frequency spectrum from 1.41 to 3.0 THz with a fractional bandwidth of 72.10%. Furthermore, the proposed antenna offers peak radiation efficiency of 74.5% and gain of 4.60 dBi at the resonant frequency of 1.89 THz. The proposed MIMO antenna achieves isolation levels of greater than 25 dB throughout the entire working band and also maintains a compact dimensions of only 38 μm 25 μm. The suggested photonic crystal-based MIMO antenna offers superior MIMO metrics like ECC ≈ (0.00000000156), DG (≈10 dB), MEG (≈ 3 dB), TARC (≈ 42 dB) and CCL (≈0.00000000465 b/Hz/sec) at the resonant frequency of 1.89 THz. Hence, the prescribed MIMO radiator can be utilized for various applications such as threat detection, material characterization, near field communication, detection of explosive and medical imaging in the terahertz band.
Citation

M. HOCINI Abdesselam, (2023-06-01), "Design and analysis of a 1 × 2 microstrip patch antenna array based on photonic crystals with a graphene load in THZ", [national] Journal of Optics , Springer

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2023-04-24

High-Performance Two-Dimensional Photonic Crystal Biosensor to Diagnose Malaria Infected RBCs

In this paper, a two-dimensional photonic crystal refractive index biosensor based on a ring-shaped
cavity has been proposed. It is designed for the diagnosis of malaria-infected red blood cells (RBCs) in the
wavelength range of 1130-1860 nm for TM-polarized light. The proposed biosensor consists of two wave-
guides coupled with one ring-shaped microcavity, which is obtained by removing seven lattice holes, the
microcavity is separated from the two waveguides by three holes. The infiltration of the analyte into the
ring-shaped cavity changes its refractive index, and this variation of the refractive index of infected and
normal uninfected RBCs causes a corresponding wavelength shift at the output terminal. Consequently, a
high sensitivity of more than 700 nm/RIU, an ultra-high-quality factor (Q-factor) of up to 106 giving a sen-
sor figure of merit (FOM) of up to 106 RIU – 1, and a low detection limit of 10 – 7 RIU can be achieved for the
proposed design. The proposed device has also an ultra-compact size of 9.78  8.84 m2 that makes it so at-
tractive for lab-on-a-chip applications. The obtained results have demonstrated that the ring-shaped holes
configuration provides an excellent optical confinement within the cavity region. The proposed design is
simulated using Plane Wave Expansion (PWE) method and Finite-Difference Time-Domain (FDTD) algo-
rithm
Citation

M. HOCINI Abdesselam, (2023-04-24), "High-Performance Two-Dimensional Photonic Crystal Biosensor to Diagnose Malaria Infected RBCs", [national] JOURNAL OF NANO- AND ELECTRONIC PHYSICS , Sumy State University

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2023-03-01

A 2D photonic crystal indium arsenide based with dual micro-cavities coupled to a waveguide as a platform for a high sensitivity pressure sensor

In the present work, we give a hydrostatic pressure sensor based on two micro-cavities coupled to a photonic crystals waveguide. A dual asymmetric H1 incorporing each one a point defect is introduced to create a sharp resonance output spectrum response of the structure. These defects make it able to detect the change of the Indium arsenide (InAs) substrate refractive index with the applied pressure changes. By applying a hydrostatic pressure on the active surface of the sensor, the refractive index of the InAs changes consequently. Therefore, this change induces a shift of the output resonant wavelength, which constitute the basis of the detection mechanism used by the photonic crystals pressure sensor. This proposed structure gives a high refractive index and pressure sensitivity reaching respectively 421 nm/RIU and 26.1 nm/GPa for a wide pressure range. Therefore, it provides very distinctive resonance peaks with good quality factors for all considered refractive index and a perfect linear relationship between the cutoff wavelength and the pressure, which offer a possibility of highly selective pressure detection.
Citation

M. HOCINI Abdesselam, (2023-03-01), "A 2D photonic crystal indium arsenide based with dual micro-cavities coupled to a waveguide as a platform for a high sensitivity pressure sensor", [international] Optical and Quantum Electronics , Springer

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2023-02-01

Morphological Design of the Photonic Crystals Influence on Improving the Optoelectronic Properties of a-SiGe:H Thin Film Solar Cell

With their nano-engineered feature, Photonic Crystals (PhCs) allow the best control of the propagation and absorption of light in an increased way. In our work, we applied the Rigorous Coupled Wave Analysis (RCWA) method to calculate the diffraction efficiency, field distribution, for a specific incidence angle and absorption energy in a periodic structures using unpatterned, 1DPhC, half circle and triangular grating structures with both a-Si:H, a-SiGe:H thin film semiconductor materials with different gratings of PhCs to improve optical absorption, taking into account the J-V solar cell characteristics. According to our simulation, the ideal result was in the case of triangular grating with a-SiGe:H semiconductor material so for the presence of Germanium, which enhances light absorption by reducing the band gap energy. The optical light absorption was more than 85.7% by increase the lattice parameter from 0.3µm to 0.5µm. Moreover, we found a solar cell efficiency enhancement of 16.6%, with a total improvement of 7.74%; as compared with unpatterned grating. Concerning the incidence angle effect, the better one is ranged between 50° and 70° with a peak absorption ratio of 99%.
Citation

M. HOCINI Abdesselam, (2023-02-01), "Morphological Design of the Photonic Crystals Influence on Improving the Optoelectronic Properties of a-SiGe:H Thin Film Solar Cell", [international] Jordan Journal of Physics , Yarmouk

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2023-01-01

Gain enhancement of a novel 1 × 2 microstrip patch antenna array based on cylindrical and cuboid photonic crystal substrate in THz

Recent advancements in the next-generation wireless communication technologies require high gain and larger bandwidth. In this paper, a high gain novel 1 × 2 circular microstrip patch antenna array is proposed to operate around 0.65 THz based on different substrates. First, the proposed antenna array is designed based on air cylinders holes embedded in a thick polyimide substrate, and then by using air cuboids holes. The proposed antenna array model is compared with a homogeneous polyimide substrate. The simulation results showed that the performance of the proposed antenna array was enhanced especially by using air cuboids holes and achieved a minimal return loss of − 74.10 dB, a wide bandwidth greater than 290 GHz, a gain of 10.57 dB, and radiation efficiency of 82.96% at a resonance frequency of 0.65 THz. Next, the gain of the proposed antenna array is investigated further by using two different substrates with a modified non-periodic photonic crystal where the air cylinders holes and air cuboids holes are mixed at the same time and embedded in the substrate with different diameter values. The simulation showed an enhancement in the gain where the highest gain was achieved by antenna array 4 of 12.03 dB. The proposed antenna array can be useful in imaging, sensing, and next-generation wireless communication technologies. The simulation is carried out by using the CST Microwave Studio simulator.
Citation

M. HOCINI Abdesselam, (2023-01-01), "Gain enhancement of a novel 1 × 2 microstrip patch antenna array based on cylindrical and cuboid photonic crystal substrate in THz", [international] Analog Integrated Circuits and Signal Processing , Springer

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Design and simulation of 1 × 2, 1 × 4 and 2 × 8 microstrip patch antenna arrays based on photonic crystals for improved gain performance in THz

In a wireless communication system, a microstrip patch antenna is gaining importance as a most powerful technology trend and it is applicable for the development of low-cost, minimal-weight, low-profile and high-performance antenna. This paper presents the design and the analysis of 1 × 2, 1 × 4 and 2 × 8 rectangular microstrip patch antenna (RMPA) arrays based on the photonic crystals for improved gain performance and high radiation characteristics compared to ones that are designed based on the homogeneous substrate in the frequency range of 0.250.55 THz. The design of the proposed antenna arrays based on the photonic band gap (PBG) and the homogeneous substrate structures is made by using the designed single-element RMPA as the basic building element, and then, they were fed by the parallel feeding structure. The designed antenna arrays were simulated using CST Microwave Studio software and validated with the aid of Ansoft HFSS simulator. For high radiation characteristics, the proposed antenna arrays resonated around 0.35 THz which is a low loss frequency window in the terahertz band. The main results showed that the designed antenna arrays based on the PBG substrate structure outperform the antenna arrays based on the homogeneous substrate in terms of return loss, bandwidth, gain and directivity. The best directivity was achieved by the 2 8 RMPA array of 17.40 dBi, whereas the 1 4, 1 2 RMPA arrays and single-element RMPA achieved the directivity of 13.54 dBi, 9.87dBi and 7.76 dBi, respectively. Hence, the designed antenna arrays can be used for medical imaging, threat detection and wireless surveillance communication.
Citation

M. HOCINI Abdesselam, (2023-01-01), "Design and simulation of 1 × 2, 1 × 4 and 2 × 8 microstrip patch antenna arrays based on photonic crystals for improved gain performance in THz", [national] Journal of Optics , Springer

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2023

Gain enhancement of a novel 1× 2 microstrip patch antenna array based on cylindrical and cuboid photonic crystal substrate in THz

Recent advancements in the next-generation wireless communication technologies require high gain and larger bandwidth. In this paper, a high gain novel 1 × 2 circular microstrip patch antenna array is proposed to operate around 0.65 THz based on different substrates. First, the proposed antenna array is designed based on air cylinders holes embedded in a thick polyimide substrate, and then by using air cuboids holes. The proposed antenna array model is compared with a homogeneous polyimide substrate. The simulation results showed that the performance of the proposed antenna array was enhanced especially by using air cuboids holes and achieved a minimal return loss of − 74.10 dB, a wide bandwidth greater than 290 GHz, a gain of 10.57 dB, and radiation efficiency of 82.96% at a resonance frequency of 0.65 THz. Next, the gain of the proposed antenna array is investigated further by using two
Citation

M. HOCINI Abdesselam, ME Benlakehal, , (2023), "Gain enhancement of a novel 1× 2 microstrip patch antenna array based on cylindrical and cuboid photonic crystal substrate in THz", [national] Analog Integrated Circuits and Signal Processing, , Springer

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2022-07-03

Capteur de micro-déplacement pour la mesure de très faibles déplacements avec une très haute précision.

Le capteur sujet de la présente invention se rapporte au domaine de mesure électronique de précision. Il entre dans le cadre des capteurs de mesure des pressions hydrostatiques appliquées à une surface donnée. Ce capteur miniature - facilement intégrable lui et son circuit électronique associé sur une même puce- trouve son intérêt dans différents domaine tel que, le contrôle des pression des gazes naturels, et synthétiques, le contrôle de pression de sang, etc.
Citation

M. HOCINI Abdesselam, (2022-07-03), "Capteur de micro-déplacement pour la mesure de très faibles déplacements avec une très haute précision.", [national] university of M'sila

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Micro-capteur optique de pression hydrostatique à haute sensibilité

Le capteur sujet de la présente invention se rapporte au domaine de mesure électronique de précision. Il entre dans le cadre des capteurs de mesure des pressions hydrostatiques appliquées à une surface donnée. Ce capteur miniature - facilement intégrable lui et son circuit électronique associé sur une même puce- trouve son intérêt dans différents domaine tel que, le contrôle des pression des gazes naturels, et synthétiques, le contrôle de pression de sang, etc.
Citation

M. HOCINI Abdesselam, (2022-07-03), "Micro-capteur optique de pression hydrostatique à haute sensibilité", [national] university of M'sila

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Un nouveau biocapteur plasmonique à base d’un guide d’onde MIM couplé à un résonateur de Fano pour la détection du cancer

La présente invention a pour objet de la proposition d’un nouveau biocapteur plasmonique miniature, non couteux et hautement sensible, à base d’un guide d’onde MIM couplé à un résonateur de Fano. Ce biocapteur permet de détecter les cellules cancéreuses (Besal, Hela , Jurkat, PC12, MDA-MB-231 et MCF-7) dans une solution biologique déposé sur surface du résonateur. Le mécanisme de détection repose sur la détection sans marquage, qui utilise l’indice de réfraction comme un élément de détection.
Citation

M. HOCINI Abdesselam, (2022-07-03), "Un nouveau biocapteur plasmonique à base d’un guide d’onde MIM couplé à un résonateur de Fano pour la détection du cancer", [national] university of M'sila

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Biocapteur à base de CPs-2D pour la détection des maladies en utilisant les larmes humaines : Sauver la vie grâce aux larmes

This work describes a two modes refractive index sensor based on photonic crystals (PhCs) for detecting diabetes in human tears samples. PhC-based biosensors are promising platforms to detect the analyte due to their high sensitivity and selectivity, low cost, and can be easily integrated with other electrical components. The proposed PhC biosensor consists of two waveguides coupled with one defective ring-shaped microcavity, the microcavity was created by removing seven lattice holes and shifting the inner ring-shaped hole vertically down by 0.45 a, the whole microcavity system is separated from the two waveguides by three holes. The achieved sensitivity for this device comes out to be 659.83 nm RIU− 1. The Q-factor, figure of merit (FOM), and limit of detection (LOD) were about 10 6, 10 6 RIU− 1, and 10− 7 RIU respectively. I
Citation

M. HOCINI Abdesselam, (2022-07-03), "Biocapteur à base de CPs-2D pour la détection des maladies en utilisant les larmes humaines : Sauver la vie grâce aux larmes", [national] university of M'sila

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2022

Plasmonic stop-band filter based on an MIM waveguide coupled with cavity resonators

In this study, we propose and simulate in the NIR region a tunable stop-band filter based on an MIM waveguide coupled to a triangular cavity. The transmission spectra of the filter are obtained using the R-Soft CAD software based on the two-dimension (2D) finite-difference time-domain (FDTD) method, which uses perfectly matched layers (PML) to absorb the outgoing energy fields. A stop-band plasmonic filter with a large bandwidth and high bandpass transmission is achieved by adding another triangular cavity resonator. One can also control the range filtered and the shift of the central wavelength by tuning the second triangular cavity parameters. This structure has important applications in highly integrated photonic circuits
Citation

M. HOCINI Abdesselam, Imane zagaar, , (2022), "Plasmonic stop-band filter based on an MIM waveguide coupled with cavity resonators", [national] Journal of Physics: Conference Series , IOP Publishing

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Design of a plasmonic sensor based on a nanosized structure for biochemical application

A novel design of an integrated ring cavity consisting of two merged and opposite triangles formed on a metal-insulator-metal (MIM) waveguide is suggested and analyzed for refractive index sensing application. The cavity design can be optimized provide the best sensing performance. In this work, we simulated numerically the device design by utilizing the finite-difference-time-domain (FDTD) technique in a two-dimensional (2D) structure. The detection of the refractive index changes was numerically simulated and analyzed using RSoft™. Small variations in the geometric parameters can enhance the sensitivity achieved, which we found to be 3575 nm/RIU. We believe that the sensor can achieve a resolution of 2.79×10−6. The structure proposed has a simple design for easy and compact realization, paving the way of detecting rare biochemical analytes and for finding applications in optical filters.
Citation

M. HOCINI Abdesselam, (2022), "Design of a plasmonic sensor based on a nanosized structure for biochemical application", [national] Journal of Physics: Conference Series , IOP Publishing

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Design and Analysis of a Mid-Infrared Ultra-High Sensitive Sensor Based on Metal-Insulator-Metal Structure and Its Application for Temperature and Detection of Glucose.

In this paper, a compact and highly sensitive refractive index plasmonic sensor, based on a metal-insulator-metal (MIM) waveguide coupled to double hexagonal ring-shaped resonators in the mid-infrared range, is proposed and analyzed using the finite-difference time-domain (FDTD) method embedded in the commercial simulator R-soft, where it has been found that the transmission peaks and dipspositions can be easily manipulated, by simply adjusting the structural parameters of the proposed design, such as the inner side length and the distance between the centers of the two hexagonal ring resonators. So, these parameters have a key role in the sensor's performances, and it is clearly noticed from the results, where a linear link between the refractive index of the material under testing and its wavelength resonances was established. Furthermore, the maximum achievable linear sensitivity was S = 4074 nm/RIU, with a matching sensing resolution of 2.45 x 10-6 RIU; the temperature sensitivity is around 1.55 nm/°C; and the highest linear sensitivity is S = 3910 nm/RIU in 0-200 g/L glucose concentration, making this proposed sensor an attractive one, to be implemented in high-performance nano and bio-sensing devices.
Citation

M. HOCINI Abdesselam, (2022), "Design and Analysis of a Mid-Infrared Ultra-High Sensitive Sensor Based on Metal-Insulator-Metal Structure and Its Application for Temperature and Detection of Glucose.", [national] PierM , PIER

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High-gain and Wideband Fabry-Perot Resonator Antenna based on a Pixelated single PRS layer for Ku-band Applications

In this paper, a wideband and high-gain Fabry Perot Resonator Antenna (FPRA) is proposed. It is based on a synthesized compact, single partially reflective surface (PRS) layer acting as a superstrate to a slot-coupled feed antenna, which acts as a radiating source element for the proposed design. The PRS uses a 2-D printed unit cell, where the lower part is a simple circular-ring Frequency Selective Surface (FSS), incorporated with a synthesized FSS unit cell. This latter acts as the upper part of the proposed PRS layer and provides a positive phase gradient. It is almost perfectly resembles that of the optimum PRS over the desired frequency range, with a relatively high reflection magnitude, making it an efficient superstrate candidate for wideband and high gain FP resonator antennas. The proposed design achieves important performance in terms of impedance bandwidth ranging from 11.9 to 17.6 GHz (38.64 %). In addition, the 3-dB gain bandwidth is 39.11 % from 11.6 to 17.24 GHz, with a maximum peak gain of 14.21 dB achieved at 16 GHz. Consistent and almost invariant radiation patterns are achieved over the Ku-band frequency band of interest.
Citation

M. HOCINI Abdesselam, (2022), "High-gain and Wideband Fabry-Perot Resonator Antenna based on a Pixelated single PRS layer for Ku-band Applications", [international] IEEE International Symposium on Antennas and Propagation and USNC-URSI , USA

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Design and analysis of a 1 x 2 microstrip patch antenna array based on periodic and aperiodic photonic crystals in terahertz

In terahertz (THz), high gain antennas are required to overcome the atmospheric attenuation and path losses, for this aim the antenna arrays are helpful. In this paper, we designed and analyzed six terahertz microstrip patch antenna arrays based on different substrates, including homogeneous, periodic photonic crystals and five new aperiodic photonic crystals substrates in the frequency range of 0.5–0.8 THz, which have applications in the next generation wireless communication technologies such as imaging, sensing and detection. The proposed antenna arrays are mounted on a thick polyimide substrate where each of the modified photonic crystal substrates is divided into several sets of perforated air cylinder holes where each set had its particular radius. The simulation has been performed using CST microwave studio for the proposed antenna arrays which resonated around 0.65 THz and showed high radiation characteristics compared to the conventional antenna array. The highest radiation characteristics were achieved by antenna array 6 which is designed based on aperiodic photonic crystals, which obtained at the resonance frequency of 0.66 THz a very low return loss of −92.89 dB, larger bandwidth greater than 282 GHz, high gain of 11.77 dBi and radiation efficiency of 87.63 %. Whereas, the conventional antenna array offered at the resonance frequency of 0.635 THz −29.73 dB, 62.81 GHz, 8.47 dBi and 84.21 %, respectively. Finally, the link budget analysis was discussed by estimating the total signal loss.
Citation

M. HOCINI Abdesselam, (2022), "Design and analysis of a 1 x 2 microstrip patch antenna array based on periodic and aperiodic photonic crystals in terahertz", [national] Optical and Quantum Electronics , Springer

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Design and analysis of MIMO system for THz communication using terahertz patch antenna array based on photonic crystals with graphene

In this paper, a novel multiple input/multiple output (MIMO) antenna system with a graphene-based patch antenna array for THz communications channel capacity enhancement has been proposed and investigated. Systematic analysis has been conducted on the graphene load conductivity by determining the operating modes related to its chemical potential. Further, the projected MIMO antenna arrays have been designed with three different approaches such as homogeneous, photonic crystals, and optimized photonic crystals. The targeted MIMO antenna arrays have been compared with their radiation characteristics such as return loss, bandwidth, and gain. The obtained results in CST simulations of the proposed graphene-based 1×2 patch antenna array using the optimized photonic crystals substrate exhibited excellent performance improvements as compared to the homogeneous substrate and the photonic crystals substrate around 0.65 THz, which achieved a peak gain of 11.80 dB and broad bandwidth greater than 614 GHz. Next, The 2×2 MIMO system scenario was studied and analyzed using the mentioned targeted MIMO antenna arrays by calculating the total path loss and the channel capacity. The obtained results showed that the proposed 2×2 MIMO system with the MIMO antenna array based on the optimized photonic crystals substrate achieved the highest capacity and the lowest total loss compared to a simple MIMO antenna array based on a homogeneous substrate. The capacity was calculated as 23.64 bit/s/Hz, and this was a remarkable enhancement compared with previously reported studies. In addition, this capacity was investigated further for different system configurations and different spacings between the transmission and receiver antennas.
Citation

M. HOCINI Abdesselam, M A Benlakehal, , (2022), "Design and analysis of MIMO system for THz communication using terahertz patch antenna array based on photonic crystals with graphene", [national] Optical and Quantum Electronics , Springer

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Design and analysis of a 1× 2 microstrip patch antenna array based on photonic crystals with a graphene load in THZ

In a terahertz (THz) band, a graphene-based patch antenna is widely used due to its unique characteristics. In this paper, a high gain 1×2 microstrip patch antenna array based on periodic and non-periodic photonic crystals with a graphene load is proposed to operate in the terahertz band, which has applications in sensing, imaging and wireless communication technologies. First, the properties of graphene were analyzed by varying the chemical potential (μc) from 0 to 1.5 eV. Next, the performance of the proposed antenna array based on periodic photonic crystals with a graphene load is compared to the case with no graphene load. The best performance was achieved at a resonant frequency of 0.630 THz when chemical potential (μc) is 1.5 eV, which achieved a minimal return loss of − 73.86 dB, a bandwidth of 287 GHz, a gain of 11.11 dB and directivity of 12 dBi. In addition, we described three different enhancements to the photonic crystal substrate by designing three different antenna arrays with different air holes in square and triangular lattices. The simulation results indicated that performance improved further with non-periodic photonic crystals as found in antenna array 3 which obtained a minimal return loss of − 75.90 dB and larger bandwidth greater than 411 GHz at a resonant frequency of 0.636 THz. The achieved gain and directivity were 11.53 dB and 12.40 dBi, respectively. The simulation is performed with the aid of CST microwave studio
Citation

M. HOCINI Abdesselam, M A Benlakehal, , (2022), "Design and analysis of a 1× 2 microstrip patch antenna array based on photonic crystals with a graphene load in THZ", [national] Journal of Optics , Springer

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A high-sensitivity biosensor based on a metal–insulator–metal diamond resonator and application for biochemical and environment detections

In this paper, a novel Refractive Index (RI) sensor on tunable plasmonic nanostructures in the near-infrared (NIR) and mid-infrared (MIR) range has been investigated, using metal-insulator-metal (MIM) and a couple of hexagonal, trapezoid, and diamond cavity (HTD) shapes. The proposed biosensor has a potential biochemical application such as glucose in water and temperature, the numerical results were obtained from the Finite-Difference-Time-Domain (FDTD) method. By optimizing the parameters of the proposed structure, we achieved maximum sensitivity reaching 5155 nm per refractive index unit (RIU), and an extensive range of refractive index from 1 to 1.7 makes the sensor suitable for biochemical as well as medical diagnostic applications, with wavelength resolution reaching as high as 3.5 × 106 RIU−1. Due to its high sensitivity, this structure could pave the way for the development of a feature plasmonic biosensor, sharp spectral response, small size, and wide detection range.
Citation

M. HOCINI Abdesselam, hocine bahri, , (2022), "A high-sensitivity biosensor based on a metal–insulator–metal diamond resonator and application for biochemical and environment detections", [national] Optik , Elsevier

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High-Gain Wideband Circularly Polarised Fabry–Perot Resonator Array Antenna Using a Single-Layered Pixelated PRS for Millimetre-Wave Applications

In this paper, a wideband and high-gain circular polarised Fabry–Perot Resonator Antenna (FPRA) with a single partially reflective surface (PRS) layer is automatically generated and optimised using a VBA-based interface system between CST Microwave studio and Matlab. The proposed PRS layer is a promising superstrate for wideband and high-gain FP resonator antennas due to its relatively high reflection coefficient magnitude and positive phase gradient, which resemble that of the optimum PRS over the relevant frequency band. The circular polarisation was achieved using a sequential feeding network for a 2 × 2 array air-gapped slot-coupled elliptical patch antenna. The proposed design achieved an impedance bandwidth of 48.58% (15.3 GHz) ranging from 23.84 GHz to 39.14 GHz, and the −3 dB gain bandwidth was 22.42% (6.25 GHz) from 24.75 to 31 GHz, with a peak gain of 17.12 dB at 29 GHz, and an axial ratio bandwidth of 21.75% (6.2 GHz). In addition, the achieved radiation efficiency was 90%. Consistent and almost invariant radiation patterns are achieved over the millimetre-wave frequency band of interest. The experimental and simulated results are in good agreement, justifying the feasibility of the proposed design as a high-gain and wideband FP resonator array antenna for Mm-wave applications.
Citation

M. HOCINI Abdesselam, (2022), "High-Gain Wideband Circularly Polarised Fabry–Perot Resonator Array Antenna Using a Single-Layered Pixelated PRS for Millimetre-Wave Applications", [national] Micromachines , MDPI

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Performance enhancement of an ultra‐wideband antenna using a compact topology optimized single frequency selective surface‐layer as a reflector

In this article, an ultra-wideband (UWB) topology optimized frequency selective surface (FSS) is introduced as a reflecting layer, to maximize the gain and overall performances of an UWB monopole antenna. The single Rogers RO4350B-based FSS layer is synthesized using an automated system, based on an interface bridged between CST Microwave studio and Matlab, and optimized using a binary genetic algorithm. First, the FSS unit cell foot print needs to be as small as possible, while covering a wider frequency range, and to achieve these performances, the proposed genetic algorithm synthesizing system achieved an FSS unit cell with only 0.1 λ × 0.1 λ at the lower-end frequency, covering a bandwidth of 2.9–14.5 GHz. Polarization independence is achieved also, due to the four-folded symmetry imposed on the FSS unit cell. The proposed antenna is designed on a Rogers RO4350B substrate, and backed at a distance of 18.74 mm by an FSS structure. The fabricated prototype shows a bandwidth of 3.1–13.9 GHz, and an excellent maximum peak gain of 9.7 dBi, with an improvement of 3.41 dBi cross the UWB spectrum
Citation

M. HOCINI Abdesselam, (2022), "Performance enhancement of an ultra‐wideband antenna using a compact topology optimized single frequency selective surface‐layer as a reflector", [national] International Journal of RF and Microwave Computer‐Aided Engineering , John Wiley & Sons, Inc

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High Gain and Wideband Fabry-Perot Resonator Antenna Based on a Compact Single PRS Layer

N. Melouki, A. Hocini and T. A. Denidni, "High Gain and Wideband Fabry-Perot Resonator Antenna Based on a Compact Single PRS Layer," in IEEE Access, vol. 10, pp. 96526-96537, 2022, doi: 10.1109/ACCESS.2022.3205605.
Citation

M. HOCINI Abdesselam, (2022), "High Gain and Wideband Fabry-Perot Resonator Antenna Based on a Compact Single PRS Layer", [national] Ieee Acces , IEEE

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An Ultra-Compact Plasmonic Sensor Design Based on Multiple Fano Resonances in MIM Waveguide Resonator System

In this work, an ultra-compact plasmonic sensor design based on Multiple Fano Resonances in
MIM waveguide resonator system is proposed. A simple design, which is highly desirable for
plasmonic optical sensing. The plasmonic structure consisting of MIM waveguide coupled with
Defective resonator. The optical sensor is studied and investigated numerically by using the
finite difference time domain method (FDTD). In this proposed structure, multiple Fanoresonant
peaks are obtained in the spectra by employing MIM waveguide coupled with an oval
resonator. Our simulation results show a large range of resonances modes and high
performance of transmission and detection. The intensity and position of the Fano resonance
modes can be adjusted easily and flexibly by alteration the refractive index (RI) of the filling
medium. In comparison to other similar optical sensors, our proposed plasmonic sensor design
has relatively comparable sensitivity, which may have application in plasmonic and
nanophotonic integrated circuits, slow light device, label free detection, nanoscale filter, and
other related plasmonic devices
Citation

M. HOCINI Abdesselam, (2022), "An Ultra-Compact Plasmonic Sensor Design Based on Multiple Fano Resonances in MIM Waveguide Resonator System", [international] r International Conference on Engineering & Technology (ICET - 2022) , Istanbul, Turkey

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Refractive Index Sensing and Label-Free Detection Employing Oval Resonator Structured Plasmonic Sensor

Plasmonics is a young area of nano-optics research. Owing to its ability to produce nanoscale hot spots, which are close to the size of bioparticles, it has been largely applied in biodetection with enhanced matter/light interactions and heightened sensitivity to refractive index (RI) changes. In this manuscript, we propose a miniature plasmonic RI sensor with high detection performances. Our proposed plasmonic RI sensor based on Fano resonances in a metal-insulator-metal (MIM) waveguide with a nanowall coupled with an oval resonator is presented in this work. The spectral characteristics and the transmission properties of the sensor are extensively analyzed using the finite difference time-domain (FDTD) method. The proposed sensor proves to be highly sensitive for label-free detection with an optimum design. FDTD simulations show that RI sensitivity values can be as high as 3787.9 nm per refractive index unit (RIU).
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2022), "Refractive Index Sensing and Label-Free Detection Employing Oval Resonator Structured Plasmonic Sensor", [national] JOURNAL OF NANO- AND ELECTRONIC PHYSICS , Sumy State University

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Design of a Double-Mode Plasmonic Wavelength Filter Using a Defective Circular Nano-Disk Resonator Coupled to Two MIM Waveguides

arious resonance modes, high transmission, and quality factor with simple design are
highly desirable parameters for realizing nano-integrated plasmonic devices. In the context, a plasmonic
structure consisting of two straight waveguides MIM coupled one central defective circular nano-disk
resonator (CNDR) is proposed in this work. The insulator and metal of the proposed plasmonic lter
are air and silver, respectively. The plasmonic lter is designed and investigated numerically by using
the nite difference time domain method (FDTD). Our simulation results indicate that the proposed
plasmonic lter has two transmission peaks with a maximum transmission equal to 80 and 70 percent.
The advantages of the proposed lter are the various resonance modes with high transmission peaks and
high quality factor which reaches 35.27. In view of these features, our proposed structure of plasmonic
lter has the potential to be employed in various devices such as plasmonic demultiplexers and sensors
for optical communication purposes.
Citation

M. HOCINI Abdesselam, Imane Zegaar, , (2022), "Design of a Double-Mode Plasmonic Wavelength Filter Using a Defective Circular Nano-Disk Resonator Coupled to Two MIM Waveguides", [international] Progress In Electromagnetics Research Letters , EMW Publishin

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2021

Performance enhancement of a compact patch antenna using an optimized EBG structure

In this paper, an Electromagnetic Band Gap (EBG) based structure is proposed and simulated with other conventional structures on a thick substrate, to tackle the narrow bandwidth problem in microstrip patch antenna, and to take advantage of using a high permittivity substrate in terms of compactness. However, using this later degrades the antenna’s radiation pattern and gain even further. An optimized mushroom like EBG structure using Genetic Algorithm (GA) is used to cover the frequency band of interest, two different bandgap characterization methods were used to determine it. The results show significant improvements in terms of the bandwidth, gain and radiation pattern compared to the use of thick substrate.
Citation

M. HOCINI Abdesselam, Tayeb A. Denidni, , (2021), "Performance enhancement of a compact patch antenna using an optimized EBG structure", [national] Chinese Journal of Physics , Elsevier

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Ultracompact gas-sensor based on a 2D photonic crystal waveguide incorporating with tapered microcavity

In this study, a new ultra compact gas-sensor, based on a 2D photonic crystal
waveguide incorporating with tapered microcavity, is designed to detect small refractive index
changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the
sandwiched waveguide on Si slab with triangular lattice. The properties of the sensor are
simulated by using the plane wave expansion (PWE) method and the finite-difference time-
domain (FDTD) algorithm. The transmission spectra of the sensor with different ambient
refractive indices ranging from n = 1.0 to n = 1.01 are calculated. The calculation results show
that a change in ambient refractive index of ∆n=1×10 -4 is apparent. The proposed sensor
achieves a sensitivity (Δλ/Δn) of 523.2 nm/RIU. It was found that the resonance wavelength is
a linear function of the refractive index in under study range. The sensor is appropriate for
detecting homogeneous media.
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2021), "Ultracompact gas-sensor based on a 2D photonic crystal waveguide incorporating with tapered microcavity", [national] IOP Conference Series: Materials Science and Engineering , IOP Publishing

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Plasmonic Refractive Index Sensor Based on Fano Resonances in MIM Waveguide Coupled With defective oval Resonator

Owing to Plasmonics’ ability to generate nanoscale hot spots closer in size to bioparticles, it has been broadly applied in biodetection with heightened sensitivity for refractive index (RI) changes and matter / enhanced light interactions [1–5]. In this context, a highly sensitive plasmonic RI sensor based on Fano resonances in metal-insulator-metal (MIM) waveguide coupled with an oval resonator is proposed. The transmission properties are numerically simulated by finite-difference time-domain method. The properties of the proposed structure in the applications of RI sensing are studied in detail, which discloses that the designed plasmonic system can have prospective applications for the integrated optical devices of nanoscale optical switches, sensors and ptical filters.
Citation

M. HOCINI Abdesselam, Tayoub hadjira, , (2021), "Plasmonic Refractive Index Sensor Based on Fano Resonances in MIM Waveguide Coupled With defective oval Resonator", [international] ICONN 2021 6th International Conference on Nanoscience and Nanotechnology. , india

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Malaria Diagnosis Using High Quality-Factor Photonic Crystal Biosensor

In 2019, they accounted for 67% (274,000) of all
malaria deaths worldwide, according to the World Health
Organization; the african region was home to 94% of malaria
cases and deaths. In this context, it is vital to detect malaria more
effectively and accurately, we have developed in this paper a two-
dimensional photonic crystal biosensor based on refractive index
changes that can be used to diagnose malaria. The proposed
design is simulated by using the FDTD algorithm. Reasonable
sensitivity, ultra-high quality-factor up to 107 by inserting blood
sample into the cavity and remarkable detection limit can be
achieved for the proposed design.
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2021), "Malaria Diagnosis Using High Quality-Factor Photonic Crystal Biosensor", [international] NUSOD 2021 , Italy

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Design and Analysis of a High-Performance Capsule-Shaped 2D-Photonic Crystal Biosensor: Application in Biomedicine

In this paper, a novel capsule-shaped two-dimensional photonic crystal (2D-PhC) biosensor, which can sense different body fluids and cancer cells for biomedical applications, has been successfully proposed, designed, and evaluated. Simulation and analysis using Plane Wave Expansion (PWE) method and FiniteDifference Time-Domain (FDTD) algorithm have been done to detect blood components and cancer cells, in which samples are taken in liquid form and penetrate a capsule-shaped cavity. It consists of a capsuleshaped cavity coupled to two waveguides, and the sensing region has a capsular geometry and is positioned in the central region of the optical waveguide. The sensing mechanism of the present biosensor is based on changing the refractive index of the analyte. A high sensitivity of 609.25 nm per refractive index unit (nm/RIU), a low detection limit of 3.9 × 10 – 6 RIU and a Q-factor of up to 107 are predicted for a specific sensor-array arrangement in the wavelength range of 1.4367 to 2.0233 µm. These values demonstrate the potentiality of the proposed biosensor. To ensure the validity of the proposed biosensor, a comparison between the results of the present work and related literature for 2D-PhC biosensors has been made.
Citation

M. HOCINI Abdesselam, TAYOUB HADJIRA, , (2021), "Design and Analysis of a High-Performance Capsule-Shaped 2D-Photonic Crystal Biosensor: Application in Biomedicine", [national] JOURNAL OF NANO- AND ELECTRONIC PHYSICS , Sumy State University

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High-sensitive mid-infrared photonic crystal sensor using slotted-waveguide coupled-cavity

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution
of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Published under licence by IOP Publishing Ltd5th International conference on advanced sciences ICAS5
IOP Conf. Series: Materials Science and Engineering 1046 (2021) 012001
IOP Publishing
doi:10.1088/1757-899X/1046/1/012001
1
Ultracompact gas-sensor based on a 2D photonic crystal
waveguide incorporating with tapered microcavity
A Harhouz 1
, A Hocini 1,*
and H Tayoub 1,2
1
Laboratoire d’Analyse des Signaux et Systèmes, Department of Electronics,
University of M’Sila BP.166, Route Ichebilia, M’Sila, 28000, Algeria.
2
Research Center in Industrial Technologies CRTI, P.O.BOX :64, Cheraga 16014,
Algiers, Algeria
*E-mail: abdesselam.hocini@univ-msila.dz
Abstract. In this study, a new ultra compact gas-sensor, based on a 2D photonic crystal
waveguide incorporating with tapered microcavity, is designed to detect small refractive index
changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the
sandwiched waveguide on Si slab with triangular lattice. The properties of the sensor are
simulated by using the plane wave expansion (PWE) method and the finite-difference time-
domain (FDTD) algorithm. The transmission spectra of the sensor with different ambient
refractive indices ranging from n = 1.0 to n = 1.01 are calculated. The calculation results show
that a change in ambient refractive index of ∆n=1×10 -4 is apparent. The proposed sensor
achieves a sensitivity (Δλ/Δn) of 523.2 nm/RIU. It was found that the resonance wavelength is
a linear function of the refractive index in under study range. The sensor is appropriate for
detecting homogeneous media.
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2021), "High-sensitive mid-infrared photonic crystal sensor using slotted-waveguide coupled-cavity", [national] IOP Conference Series: Materials Science and Engineering , IOP Publishing

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Highly sensitive plasmonic temperature sensor based on Fano resonances in MIM waveguide coupled with defective oval resonator

Temperature sensor. A highly sensitive temperature sensor based on Fano resonances in metal-insulator-metal (MIM) waveguide with Nano-wall side-coupled to oval resonator is proposed in this work. The Fano resonance is originated from the coherent coupling and interference between the discrete and the continua state. It shows a different profile, which is typically asymmetric and sharp line, in comparison with the Lorentzian resonance profile. The transmission properties are numerically simulated by finite-difference time-domain method. Structural parameters have a key role in the sensor’s sensitivity and transmission spectrum that are studied to systematically analyze the sensing characteristics of such structure. The results of our study indicate that there exist Four-fano resonance peaks in the transmission spectrum. All of which has a linear relationship with the refractive index of the analyte under sensing. Through the optimization of structural parameters, sensitivity of 2.463 nm/∘C is achieved, indicating the designed sensor can pave the way in the nano-integrated plasmonic devices for high-accurate temperature detection.
Citation

M. HOCINI Abdesselam, (2021), "Highly sensitive plasmonic temperature sensor based on Fano resonances in MIM waveguide coupled with defective oval resonator", [national] Optical and Quantum Electronics , Springer US

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2020

Modeling and simulation of an antenna with optimized AMC reflecting layer for gain and front-to-back ratio enhancement for 5G applications

A low-profiled microstrip patch antenna for application in the 5G wireless communication systems is backed by a reflecting layer based on an optimized artificial magnetic conductor (AMC) to enhance the gain and the front-to-back ratio. The design and analyses process were carried out using the full-wave commercial simulator CST Microwave Studio in parallel with Matlab, using the embedded CST to Matlab VBA-based interface to create an automated simulation environment and to design both a conventional antenna and the proposed one. A genetic algorithm (GA) is used to optimize the AMC reflecting layer to achieve maximum gain and front-to-back ratio around the frequency band of interest. The results yield an important enhancement in the peak gain and front-to-back ratio, alongside a low side-lobe level (SLL) due to the successful surface waves suppression, thus making this antenna design a good candidate for future wireless communication systems.
Citation

M. HOCINI Abdesselam, Tayeb A. Denidni, , (2020), "Modeling and simulation of an antenna with optimized AMC reflecting layer for gain and front-to-back ratio enhancement for 5G applications", [national] Journal of Physics: Conference Series , IOP Publishing

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Refractive index sensor MIM based waveguide coupled with a slotted side resonator

In this paper, a plasmonic sensor based on a metal-insulator-metal (MIM) waveguide with
a slotted side-coupled racetrack cavity is proposed. The transmission characteristics of the cavity are
analyzed theoretically, and the improvements of performance for the racetrack cavity structure compared
to a single disk cavity are studied. The influence of structural parameters on the transmission spectra
and sensing performances is investigated thoroughly. The achieved sensitivity for the first mode was
S = 959 nm/RIU and S = 2380 nm/RIU for the second one. Its corresponding sensing resolution is
1.04 × 10−5 RIU for mode 1 and 4.20 × 10−6 RIU for mode 2, respectively, and high transmissions are
achieved at the two resonant wavelengths of 898.8 nm and 1857.1 nm. The proposed plasmonic sensor
is a good candidate for designing novel devices and applications, in the field of chemical and biological
sensing, and also in the field of plasmonic filters, switches, etc.
Citation

M. HOCINI Abdesselam, Salah Eddine Achi, Hocine Ben Salah, , (2020), "Refractive index sensor MIM based waveguide coupled with a slotted side resonator", [national] Progress In Electromagnetics Research M , EMW Publishing

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2019

Plasmonic nano-sensor and band-pass filter based on metal-insulator-metal waveguide with a hexagonal ring based cavity

In this paper, a high sensitivity metal-insulator-metal (MIM) waveguide based plasmonic sensor, coupled by a hexagonal ring resonator is proposed. The sensing characteristics of the device are analyzed by the finite-difference time-domain (FDTD) method embedded in the commercial simulator R-Soft. The results yield a linear correlation between the refractive index of the material under testing and its wavelength resonances. Moreover, the maximum linear sensitivity is S = 1743 nm/RIU for the second mode and it is S = 836 nm/RIU for the first mode, its corresponding sensing resolution is 5.73 × 10-6 RIU for mode 2 and 1.19 × 10-5 RIU for mode 1. The proposed sensor can be implemented in high performance nano-sensors and bio-sensing devices. The positions of transmission peaks can be easily manipulated by adjusting the inner side lengths of the HRR, this structure can be used as a tunable band-pass filter. In addition, introducing another small hexagonal ring within the base resonator decreased the full width of half maximum (FWHM) of the resonance peak.
Citation

M. HOCINI Abdesselam, (2019), "Plasmonic nano-sensor and band-pass filter based on metal-insulator-metal waveguide with a hexagonal ring based cavity", [international] The Electrical Engineering International Conference EEIC’19 , Bejaia, Algeria

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Design of Bio-alcohol Sensor Based on Two-Dimensional Photonic Crystal in a Nanophotonic Structure

in the present work, we designed a bio-alcohol sensor of a square array of two-dimensional photonic crystals in nanophotonic structure. We studied five kinds of organic materials at resonance such Methanol (CH3OH), Ethanol (C2H5OH), propanol (C3H7OH), Butanol (C4H9OH) and propanol amyl alcohol (C5H11OH). This structure consists of dielectric pillars immersed in the air. By using COMSOL software, we created a ring resonator shape in the middle of the structure between two waveguides. We were able to obtain the numerical results by using MATLAB and COMSOL software. These numerical results shows the band diagram, the refractive index distribution and the mesh along the structure as well as the propagation of the electric field and the electric field norm of different organic materials used at different resonance wavelengths. We also extracted the power flow norm at resonance wavelengths. This is due to refractive index of organic materials used of methanol, ethanol, propanol, butanol and propanol-amyl alcohol which have the following values: 1.3256, 1.3602, 1.3750, 1.3968 and 1.4056 respectively. Only the radius (r) of the pillars and the lattice constant (a) are fixed at 93.67nm and 493nm respectively.
Citation

M. HOCINI Abdesselam, (2019), "Design of Bio-alcohol Sensor Based on Two-Dimensional Photonic Crystal in a Nanophotonic Structure", [international] 2019 International Conference on Advanced Electrical Engineering (ICAEE) , Algeria

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Design of mid infrared high sensitive metal-insulator-metal plasmonic sensor

In this paper, high sensitivity plasmonic refractive index sensor based on implanted cavities in Metal-Insulator-Metal (MIM) waveguide is designed and analyzed using two dimensional (2D) FDTD algorithm with perfectly matched layer boundary conditions. The dimensions of the introduced single and double cavities with rectangular defect are analyzed and simulated for the best sensor performance. The results reveal in linear correlation between the resonance wavelengths of the proposed defected cavities and the refractive index of the material under testing which is placed in the active region of the sensor. Also, simulation results show that the sensor resolution of refractive index, which depends on wavelength resolution of the detection system, can reach as high as RIU, equivalentely to a sensitivity of 2602.5 nm/RIU, by taking the wavelength resolution of 0.01 nm.With the achieved optimum design by considering the tradeoff between the detected power, sensitivity and structure size, the transmittance level is enhanced by 118.08% compared to the first design. The proposed sensor can be used for different interesting applications such as identification of various materials including biosensor application, by proper design.
Citation

M. HOCINI Abdesselam, (2019), "Design of mid infrared high sensitive metal-insulator-metal plasmonic sensor", [national] Chinese Journal of Physics , Elsevier

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Novel Approach for the Design and Analysis of a Terahertz Microstrip Patch Antenna Based on Photonic Crystals

In this study, we designed and analyzed five terahertz microstrip patch antennae based on a modified photonic band gap substrate in the frequency range from 0.5 to 0.8 THz. The objective was to achieve the best antenna characteristics around 0.65 THz, which has applications in sensing and communication technologies. Simulations were performed for rectangular patch antennae based on different substrates, including homogeneous, periodic photonic crystals and four new aperiodic photonic crystal substrates. Each of the modified photonic crystal substrates contained several sets of air holes perforated in the polyimide substrate, where each set had its own specific radius. The proposed antennae had high radiation characteristics around 0.65 THz compared with conventional antenna. The best characteristics were achieved with the second antenna structure, which obtained a minimal return loss of −83.73 dB and a wide bandwidth greater than 230 GHz. The gain achieved and radiation efficiency were 9.19 dB and 90.84%, respectively. The simulations were performed based on the finite integration technique with the commercially available CST Microwave Studio simulator.
Citation

M. HOCINI Abdesselam, Mehdi Zamani, , (2019), "Novel Approach for the Design and Analysis of a Terahertz Microstrip Patch Antenna Based on Photonic Crystals", [national] Photonics and Nanostructures - Fundamentals and Applications , Elsevier

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Analysis and design of a terahertz microstrip antenna based on a synthesized photonic bandgap substrate using BPSO

A microstrip patch antenna based on a synthesized photonic bandgap (PBG) substrate is designed and analyzed by using a technique based on the combination of an evolutionary heuristic optimization algorithm with the CST Microwave Studio simulator, which is based on the finite integral technique. The initial antenna is designed by analyzing air cylinders embedded in a thick silicon substrate, which has high relative permittivity. Then, to synthesize the PBG substrate, a binary particle swarm optimization (BPSO) algorithm is implemented in MATLAB to design a two-dimensional (2D) photonic crystal on a square lattice that improves the initially designed microstrip antenna. The unit cell is divided equally into many square pixels, each of which is filled with one of two dielectric materials, silicon or air, corresponding to a binary word consisting of the binary digits 0 and 1. Finally, the performance of the initial antenna is compared with the BPSO-optimized antenna using different merit functions. The results show remarkable improvements in terms of the return loss and fractional bandwidth. Both microstrip patch antennas based on the synthesized photonic crystal substrate achieve noticeable sidelobe suppression. Furthermore, the first design, which is a dual-band antenna, shows a return loss improvement of 5.39 %, while the fractional bandwidth of the second design is increased by 128 % (bandwidth of 128 GHz), compared with the initial antenna based on the air-hole PBG substrate. Both antennas maintain a gain close to 9.17 dB. Also, the results show that the obtained antennas have resonant frequencies around 0.65 THz, as required for next-generation wireless communication technology and other interesting applications.
Citation

M. HOCINI Abdesselam, Mehdi Zamani, , (2019), "Analysis and design of a terahertz microstrip antenna based on a synthesized photonic bandgap substrate using BPSO", [national] Journal of Computational Electronics , Springer

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Study and Simulation of the Power Flow Distribution of an Optical Channel Drop Filter in Structure Based on Photonic Crystal Ring Resonator for Different Organic Liquids

The following work represents a propagation and power flow investigation for different organic liquids of an optical channel drop filter on a 2D photonic crystal flower ring resonator. The structure is composed of dielectric rods immersed in air and based on photonic crystal ring resonator. The ring resonator is formed as a flower shape and is sandwiched by two wave guides. For analyzing this structure, plane –wave expansion (PWE) approach and finite element method is applied. The numerical results shows the propagation and the power flow variations for different organic liquids used. This variation is due to their refractive index which varies from one material to another. In this work, we fixed the radius ‘r’ and the lattice constant ‘a’ by interesting to the refractive index which is an important parameters of each materials used.
Citation

M. HOCINI Abdesselam, (2019), "Study and Simulation of the Power Flow Distribution of an Optical Channel Drop Filter in Structure Based on Photonic Crystal Ring Resonator for Different Organic Liquids", [national] Lecture Notes in Networks and Systems , Springer

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Modelling and Simulation of Optimized Photonic Crystal Waveguide for Slow Light Enhancemen

. www.veit.ie-bas.org
Citation

M. HOCINI Abdesselam, (2019), "Modelling and Simulation of Optimized Photonic Crystal Waveguide for Slow Light Enhancemen", [international] VEIT 2019 , Bulgaria

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Modelling and simulation of an optimized AMC reflecting layer for gain and Front-To-Back ratio enhancement for 5G

In this paper, a low-profiled microstrip patch antenna for the future generation of wireless communication systems 5G, is backed by an optimized Artificial Magnetic Conductor (AMC) based reflecting layer, to enhance the gain and the front-to-back ratio. The designing and the analysing process were carried out using the full wave commercial simulator CST Microwave studio in parallel with matlab, using the embedded CST to Matlab VBA based interface to create an automated simulation environment, for designing both the conventional antenna and the proposed one. Genetic algorithm (GA) is used to optimize the AMC reflecting layer to achieve maximum gain and front-to-back ratio around the frequency band of interest. The results yield an important enhancement in peak gain and front-to-back ratio, alongside the low side lobe level (SLL), due to the successful suppression of surface waves, which makes it a good candidate for the future of wireless communication systems.
Citation

M. HOCINI Abdesselam, (2019), "Modelling and simulation of an optimized AMC reflecting layer for gain and Front-To-Back ratio enhancement for 5G", [international] 21st International Summer School on Vacuum, Electron and Ion Technologies (VEIT 2019) , Sozopol, Bulgaria

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Design and analysis of Mid Infrared High Sensitive Metal-Insulator-Metal Plasmonic Bio-Sensor

http://www.icas5.bsu.edu.eg/
Citation

M. HOCINI Abdesselam, (2019), "Design and analysis of Mid Infrared High Sensitive Metal-Insulator-Metal Plasmonic Bio-Sensor", [international] ICAT 5 , Egypt

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Photonic band gap spectra in Octonacci all superconducting aperiodic photonic crystals

In this paper, we have theoretically investigated the optical spectra of all superconducting aperiodic photonic crystals comprising from different superconductors namely high-high, low-low and high-low temperature configurations. Also, the name Octonacci is composed of Octo-from octagonal and -acci from the Fibonacci sequence, however, the Octonacci sequence has a geometric origin. In order to show the difference between TE- and TM-polarized lightwaves, we have analyzed both the influence of the incident angle and temperature of light wave on the PBGs as well as transmittance resonance-peaks. By the way, the possibility of obtaining deep photonic band gap (PBG) has been provided for both TE and TM polarizations for the most incident angles. This study also investigates the effect of generation number of the Octonacci sequence on the PBG spectrum within the visible range. The results show that optical performances of Octonacci all superconducting aperiodic photonic crystals are higher than Fibonacci ones even with upper generations. Finally, to show the impact of the results, we have made a comparison between this new investigating quasi-periodic sequence and periodic all superconducting ones.
Citation

M. HOCINI Abdesselam, Mehdi Zamani, MansourehAmanollahi, , (2019), "Photonic band gap spectra in Octonacci all superconducting aperiodic photonic crystals", [national] Physica B: Condensed Matter , Elsevier

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Ultracompact gas-sensor based on a 2D photonic crystal waveguide incorporating withmicrocavity

n this study, a new ultra compact gas-sensor, based on a 2D photonic crystal
waveguide incorporating with tapered microcavity, is designed to detect small refractive index
changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the
sandwiched waveguide on Si slab with triangular lattice. The properties of the sensor are
simulated by using the plane wave expansion (PWE) method and the finite-difference time-
domain (FDTD) algorithm. The transmission spectra of the sensor with different ambient
refractive indices ranging from n = 1.0 to n = 1.01 are calculated. The calculation results show
that a change in ambient refractive index of ∆n=1×10 -4 is apparent. The proposed sensor
achieves a sensitivity (Δλ/Δn) of 523.2 nm/RIU. I
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2019), "Ultracompact gas-sensor based on a 2D photonic crystal waveguide incorporating withmicrocavity", [international] 5th International conference on advanced sciences ICAS , Beni-Suef University, Hurghada, Egypt.

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2018-06-07

A High Sensitivity Pressure Sensor using Two Dimensional Photonic Crystal Cavity

In this work, ahydrostatic pressure sensor based on a cavity coupled to a photonic crystal waveguide is proposed. A defect is introducedto createa sharp resonance in the structure which makes it useful for detecting pressure changes. The sensing principle is based on the shift of the resonant wavelength with the change refractive index which arises due to the hydrostatic pressure effect. The proposed structure gives a high sensitivity against wide range of pressures and a good quality factor near 3GPa is achieved. Conclusion: The proposed design also shows separated resonant peaks for different indicesand a perfect linear relation between the cutoff wavelength and the pressure which offer a possibility of highly selective pressure detection.
Citation

M. HOCINI Abdesselam, (2018-06-07), "A High Sensitivity Pressure Sensor using Two Dimensional Photonic Crystal Cavity", [national] International Journal of Sensors Wireless Communications and Control , Bentham Science Publishers

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2018

Enhancing the Performances of a Compact Microstrip Antenna Using Electromagnetic Band Gap Structure for Future 5G of Communication Systems

In this paper, an Electromagnetic Band Gap (EBG) substrate was proposed and designed to tackle the narrow bandwidth, low gain and efficiency in Microstrip Patch Antennas, by drilling air-gaped holes into the homogenous substrate, hence changing its electromagnetic properties to exhibit a stop-band or a band-gap in which surface waves are prohibited from propagating, therefore an enhancement in terms of radiation pattern, gain, efficiency and the impedance bandwidth, the results show significant improvements of the proposed design in comparing to the conventional one.
Citation

M. HOCINI Abdesselam, Tayeb A. Denidni, , (2018), "Enhancing the Performances of a Compact Microstrip Antenna Using Electromagnetic Band Gap Structure for Future 5G of Communication Systems", [international] Third International Conference on Technological Advances in Electrical Engineering (ICTAEE’18) , Skikda, Algeria

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Design and Analysis of Terahertz Microstrip Circular Patch Antenna Based on an Optimized Polyimide Photonic Crystal Substrate

In this paper, terahertz microstrip circular patch antenna based on new photonic band gap (PBG) substrate in the frequency range of 0.5–0.8 THz is designed and analysed. The objective of the study in such type of antenna is to achieve high antenna performance around 0.65 THz which is the demand of current wireless communication technology. Simulations are performed for circular patch antenna with and without photonic crystal substrate and with a new optimized PBG substrate.
Results reveal in high radiation characteristics of the proposed antenna at 0.658 THz with a minimal return loss of -50.88 dB and wide bandwidth of 268 GHz. The achieved gain and radiation efficiency are 8.5 dB and 92.25 % respectively. The simulation has been computed by commercially available CST Microwave
Studio simulator, which is based on the finite integration technique.
Citation

M. HOCINI Abdesselam, (2018), "Design and Analysis of Terahertz Microstrip Circular Patch Antenna Based on an Optimized Polyimide Photonic Crystal Substrate", [international] Second International Conference on Electrical Engineering ICEEB'2018 , Biskra University

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Design and Analysis of Terahertz Microstrip Patch Antenna Based on Optimized Photonic Crystal Substrate

In this paper, terahertz microstrip rectangular patch antenna based on photonic band gap (PBG) substrate in the frequency range of 0.5–0.8 THz is designed and analysed. The aim of the study in such type of antenna is to achieve high antenna performance around 0.65 THz which is the demand of current wireless communication technology. Simulations are computed for rectangular patch antenna with and without photonic crystal substrate and with a new optimized PBG
substrate. Results reveal in high radiation properties of the proposed antenna at 0.644 THz with a minimal return loss of - 63.17 dB and wide bandwidth of 216 GHz. The achieved gain and radiation efficiency are 8.78 dB and 94.05% respectively. The simulation has been performed by commercially available CST Microwave Studio simulator, which is based on the finite difference time domain method (FDTD)
Citation

M. HOCINI Abdesselam, (2018), "Design and Analysis of Terahertz Microstrip Patch Antenna Based on Optimized Photonic Crystal Substrate", [international] IEEE International Conference on Technological Advances in Electrical Engineering ICTAEE’18 , Skikda university.

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Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides.

In this paper, a viable design of mid-infrared refractive index sensor based on photonic crystal coupled cavity-two waveguides is proposed. An increasing number of works are dedicated to investigate the behavior of refractive index sensor based on photonic crystal in the mid-infrared range. We define the sensitivity of our sensor by detecting the shift in the resonance wavelength as a function of the refractive index's variations in the region around the cavity. The purpose of this study is to design a highly sensitive mid-infrared photonic crystal sensor. Consequently, an improved sensitivity of 650 nm/RIU (refractive index units) with a detection limit of 0.001 RIU has been obtained. The sensitivity can be improved from 394 nm/RIU to 758 nm/RIU with a detection limit of 0.01 RIU in the wavelength range of 2, 97 µm to 3, 71 µm by increasing the number of the infiltrated holes. The same design has been used as a liquid
Citation

M. HOCINI Abdesselam, tayoub hadjira, , (2018), "Mid-infrared Refractive Index Sensor Based on a 2D Photonic Crystal Coupled Cavity-two Waveguides.", [international] 8th International Conference on Computational and Experimental Science and Engineering , kemer-Antalya,Turkey

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2017

Design of pressure sensor based on two-dimensional photonic crystal

In this work, we design a new pressure sensor based on two-dimensional photonic crystal waveguide coupled
to a point-defect resonant microcavity. The mechanism of sensing is based on the change of the germanium
refractive index as function of the hydrostatic pressure P. The resonant wavelength will shift when pressure
variation induces change in the refractive indexes of the structure. The pressure variation causes the shifting of
defect modes. The properties of the refractive index sensor are simulated using the finite-difference time-domain
algorithm and the plane wave expansion method. These kinds of sensors have many advantages in compactness,
high sensitivity, and various choices of materials.
Citation

M. HOCINI Abdesselam, riad Mokhtari, , (2017), "Design of pressure sensor based on two-dimensional photonic crystal", [national] Acta Physica Polonica A , Institute of Physics, Polish Academy of Science

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Ultracompact gas-sensor based on a 2D photonic crystal modified waveguide

In this work, we design a new Infiltrated liquid sensor based on a 2D photonic crystal waveguide incorporating a microcavity to sense small refractive index changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the sandwiched waveguide with triangular lattice of air holes (index profile of silicon slab nsi=3.42 and air nair=1). The properties of the sensor are simulated using the finite-difference time-domain (FDTD) algorithm and the plane wave expansion (PWE) method (RSoft Photonic Suite). The sensing principle is based on the shift of resonance wavelength λ0, which occurs due to the change in RI of the sensor when the PhC’s air holes are full of homogenous liquid. Several liquids with refractive indices ranging from 1 (the air) to 1.4 were studied and showed that the best sensitivity of 475 nm/RIU and limit of detection of 0.01 RIU can be achieved.
Citation

M. HOCINI Abdesselam, (2017), "Ultracompact gas-sensor based on a 2D photonic crystal modified waveguide", [international] the first International conference on electronics and new technologies NCENT’2017 , M’sila, Algeria.

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2016

Modeling and analysis of the temperature sensitivity in two-dimensional photonic crystal microcavity

We propose a temperature sensor design based on the two-dimensional (2-D) photonic crystals (PhCs) microcavity coupled to two waveguides. We consider a Si 2-D PhC, and the refractive index (RI) of distilled water in holes has been taken as temperature dependent. The resonant wavelength will shift when temperature variation induces change in the RIs of the distilled water. The temperature variation causes the shifting of defect modes. The transmission characteristics of light in the sensor under different RIs that correspond to the change in temperatures are simulated by using the finite-difference time-domain method. A sensitivity of 84  pm/°C was achieved with the structure proposed. This property can be exploited in the design of a temperature sensor.
Citation

M. HOCINI Abdesselam, (2016), "Modeling and analysis of the temperature sensitivity in two-dimensional photonic crystal microcavity", [national] Journal of Nanophotonics , International Society for Optics and Photonics

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2015

Design of high-sensitive biosensor based on cavity-waveguides coupling in 2D photonic crystal

In this work, we design a new biosensor concept that uses a microcavity in 2D photonic crystal (PhC) to sense small refractive index (RI) changes. The RI sensor is formed by a point-defect resonant cavity in the sandwiched waveguide with triangular lattice of air holes. The properties of the sensor are simulated using the finite-difference time-domain method. The calculation results show that a change in ambient RI is apparent; the sensitivity of the sensor is achieved. We succeeded to obtain a new sensitivity value of 425 nm/RIU with a detection limit of 0.001 RIU, which proves the ability of the structure to produce biosensor PhC.
Citation

M. HOCINI Abdesselam, (2015), "Design of high-sensitive biosensor based on cavity-waveguides coupling in 2D photonic crystal", [national] Journal of Electromagnetic Waves and Applications , Taylor & Francis

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Refractive index sensing utilizing a microcavity-waveguides coupling in 2D photonic crystal

In this work, we design a new An ultracompact gas-sensor based on a 2D photonic crystal modified waveguide to sense small refractive index changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the sandwiched waveguide with triangular lattice of air holes in SOI substrat. The properties of the sensor are simulated using the finite-difference time-domain (FDTD) algorithm and the plane wave expansion (PWE) method. The transmission spectrums of the sensor with different ambient refractive indices ranging from n = 1.0 to n = 1.01 are calculated. The calculation results show that a change in ambient refractive index of is apparent, the sensitivity of the sensor ( Δλ / Δn ) is achieved with 523.2 nm/RIU. The resonance wavelength is found to be a linear function of the refractive index in the range under study. The sensor is appropriate for detecting homogeneous media.
Citation

M. HOCINI Abdesselam, (2015), "Refractive index sensing utilizing a microcavity-waveguides coupling in 2D photonic crystal", [national] the first national conference on electronics and new technologies NCENT’2015 , M’sila, Algeria.

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Modelling ’ and analysis of the sensitivity in 2D photonic crystal tapered microcavity

In this work, we design a new Infiltrated liquid sensor based on a 2D photonic crystal waveguide incorporating a microcavity to sense small refractive index changes. The refractive index (RI) sensor is formed by a point-defect resonant cavity in the sandwiched waveguide with triangular lattice of air holes (index profile of silicon slab nsi=3.42 and air nair=1). The properties of the sensor are simulated using the finite-difference time-domain (FDTD) algorithm and the plane wave expansion (PWE) method (RSoft Photonic Suite). The sensing principle is based on the shift of resonance wavelength λ0, which occurs due to the change in RI of the sensor when the PhC’s air holes are full of homogenous liquid. Several liquids with refractive indices ranging from 1 (the air) to 1.4 were studied and showed that the best sensitivity of 475 nm/RIU and limit of detection of 0.01 RIU can be achieved.
Citation

M. HOCINI Abdesselam, BRUNO plapant, , (2015), "Modelling ’ and analysis of the sensitivity in 2D photonic crystal tapered microcavity", [international] Games of Light with Meta-Molecules: Communicating, Sensing and Imaging GLEAM’ 15, , PARIS

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2014

Design ofHigh sensitive optical Sensor for Seawater Salinity

novel optical sensor was designed for the measurement of salinity in
seawater. The principle is to measure the refractive index variation of seawater that
corresponds to the change in salinity. The sensor based on the two-dimensional
photonic crystal (PhC) microcavity coupled to two waveguide. We have used the
FDTD method to simulate the sensor in 2D PhC with triangular lattice of air holes.
The influence of the geometrical parameter and refractive index on transmission are
studied, and an enhancement in sensitivity in 2D PhC is achieved which proves the
ability of the structure to produce salinity sensor using PhC
Citation

M. HOCINI Abdesselam, (2014), "Design ofHigh sensitive optical Sensor for Seawater Salinity", [international] 2nd International Congress on Energy Efficiency and Energy Related Materials (ENEFM , Oludeniz, Fethiye / Mugla-TURKEY

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