MOUNIR Bouras

HADJAB Safwan , BENSEDDIK Mohamed

Amélioration de l'efficacité des cellules solaires photovoltaïques à base de Pérovskites

CHAHMI Maroua

Piégeage de la lumière pour le contrôle de l’absorption dans les cellules solaires photovoltaïques

Ms. Djaidja Asma , Ms. Hadjab Dounya Ichraq

STUDY AND SIMULATION OF LOSSES IN AN OPTICAL FIBER CONNECTION WITH APPLICATION

BELDJOUDI Bochra , GAHAM Sabrina

Authorship Attribution of Specific Arabic Texts using Character N-gram and Classification Techniques

BELDJOUDI Bochra , GAHAM Sabrina

Authorship Attribution of Specific Arabic Texts using Character N-gram and Classification Techniques

Ms. Djaidja Asma , Ms. Hadjab Dounya Ichraq

STUDY AND SIMULATION OF LOSSES IN AN OPTICAL FIBER CONNECTION WITH APPLICATION

SALMI Hiba , BELAMRI Anwar Essadat

Optimisation de l'énergie et la prédiction de dispersion pour la transmission RZ non linéaire

CHARIK Haouari

Étude théorique des matériaux a cristaux photoniques unidimensionnels : applications dans le domaine de détection

Ben aiche Anis , Bouhali Rofida

Etude numérique d'une nanostructure de piégeage de lumière d'une cellule solaire à pérovskite sur un substrat d'or

CHARIK Haouari

Étude théorique des matériaux a cristaux photoniques unidimensionnels : applications dans le domaine de

DERMECHE Nassim

Étude théorique des cristaux magnéto-photoniques unidimensionnels pour l’amélioration de l’effet faraday

BOUAZIZ Zineb , KHOUNI Idris

Conception et caractérisation d'un biocapteur SPR

BOUKHOUIDEM L , AOUNI Qoteyba

Étude et simulation des propriétés optoélectroniques du Laser à type DFB

BADREDDINE Rihab , CHERIKI Dalila

Amélioration de la caractéristique optique et électrique d'une cellule photovoltaïque à base de pérovskite

DERMECHE Nassim

Étude théorique des cristaux magnéto-photoniques unidimensionnels pour l’amélioration de l’effet faraday

Bougoufa Aicha , Berbache Ilham

Caractérisation d un capteur thermique basé sur un cristal photonique 1D Avec défaut central de cristalliquide

CHEBLI Chahinz , LAMICH Amira

Caractérisation de cristal liquide à base de cristaux photonique 1D

ABDELATIF Hicham

Optimisation d'une structure de piégeage de la lumière pour les cellules solaires

LAIFAOUI LOUIZA

Étude théorique de la bande interdite dans les cristaux magnéto-photoniques unidimensionnels

REGAIA CHENNI

Etude des propriétés optiques, électriques et structurales des structures nanométriques pour des cellules photovoltaïques à haut rendement

LAIFAOUI Louiza

Etude théorique de la bande interdite dans les cristaux magnéto-photonique unidimensionnels

AHDIBI Souhila

Etude et simulation des cellules solaires photovoltaïques à base de "Si "et "GaAs

BEDDIAR Antar

Etude et élaboration d’algorithme de débruitage de signaux : Application à la reconnaissance de la parole

AOUFI Bilal

Interféromètre de type Mach-Zehnder en SiO2 /TiO2 : application aux biocapteurs

ALLAL SAID , CHARIK HAOUA

Etude et conception de biocapteur à base de Cristaux photoniques unidimensionnelles

Hadj Hafsi Mohamed

Etude de l’interféromètre de MTCH-ZEHNDER à Base De SiO2/TiO2 Dopé par nanoparticule

CHENDI Rogiya

Amélioration de l’absorption dans les cristaux photoniques 2D : Application aux cellules solaires photovoltaïques

BOUDJEMAA YOUCEF

Amélioration de l’absorption dans les cristaux photoniques

SAFAR TABBI YOUCEF

guide diffusé a echange d'ion

Most conventional approaches to Authorship Attribution (AA) rely on statistical methods and classification algorithms that utilize stylistic features extracted from textual document. These features may include lexical, syntactic, structural, and content-based markers that reflect an author’s unique writing style. In recent years, Pre-trained Language Models (PLMs) have gained significant attention in the field of text classification. While they have demonstrated strong performance on large-scale datasets and short texts, their effectiveness in scenarios with limited data—particularly in the context of Arabic Authorship Attribution (AAA)—remains insufficiently explored. This study aims to evaluate the effectiveness of state-of-the-art Pre-trained Arabic Transformer-based Models in handling imbalanced textual datasets, with a particular focus on the underrepresented domain of theological law, which has witnessed limited contributions in the context of AA. The study addresses AAA using imbalanced corpora containing texts of varying lengths, extracted from several books written by Arab authors who lived during the same historical period. We conducted several experiments involving the fine-tuning of four Pre-trained Arabic Transformer-based Models: AraBERT, AraELECTRA, ARBERT, and MARBERT. The obtained experimental results have shown that AraBERT achieved the best performance in attributing texts to their respective authors.

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Salah KHENNOUF , Mounir BOURAS , ABDELHAFID Benyounes , ,(2026-01-29), Towards Robust Arabic Authorship Attribution: A Transformer-Based Model for Multi-Author Imbalanced Corpora,9th International Conference of Mathematical Sciences (ICMS 2025),Turkey

abstract:Authorship Attribution (AA) seeks to identify the author of a text by analyzing distinctive linguistic and stylistic features. While several studies have focused on English and other Latin-based languages, Arabic AA -particularly with imbalanced datasets- remains comparatively underexplored. In order to close this gap, this work uses a newly created dataset entitled SAB-2, which consists of 7 Arabic books with varying segment lengths, to examine the effectiveness of Arabic pretrained transformer models for multi-class AA. Given the strong impact of data imbalance on classification performance, we apply the Synthetic Minority Oversampling Technique (SMOTE) to enhance minority-class representation and examine its influence on model accuracy. Our experiments evaluate several transformer-based models -AraBERT, AraELECTRA, ARBERT, and MARBERT- alongside deep learning architectures (LSTM, CNN, and a hybrid LSTM-CNN model). Results show that SMOTE substantially improves performance across all models, with the LSTMCNN architecture combined with AraBERT achieving the highest accuracy of 89%, outperforming baseline experiments without balancing. The obtained results show the robustness of Arabic pretrained transformers in capturing stylistic features from limited and imbalanced textual data, highlighting their potential for advancing Arabic AA in resource-constrained domains.

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Salah KHENNOUF , Mounir BOURAS , ABDELHAFID Benyounes , , (2026-01-25), Towards Robust Arabic Authorship Attribution: A Transformer-Based Model for Multi-Author Imbalanced Corpora, Bol. Soc. Paran. Mat., Vol:43, Issue:7, pages:10, SPM:www.spm.uem.br/bspm

In recent years, significant advancements have been made in thin-film planar heterojunction solar cells, emerging as cost-effective photovoltaic devices with high power conversion efficiency. Among the materials utilized, organometal trihalide perovskite (CH3NH3PbI3) stands out as a promising absorber material. Its appeal lies in the affordability of organic-inorganic perovskite compounds, readily available in nature, ease of fabrication, and compatibility with large-scale processing at low temperatures. In addition to its effective absorption in the ultraviolet range, this material exhibits captivating optoelectronic properties, including high crystallinity, elevated carrier mobility, and extensive carrier diffusion lengths. Despite these advantages, the highest reported power conversion efficiency for perovskite solar cells is currently at 26.1/100 , as of 2022. This study introduces a thin-film organometal trihalide perovskite solar cell featuring hybrid interfaces between carefully chosen materials. These selections are the result of an in-depth study aimed at minimizing recombination and optimizing performance. Furthermore, we enhance the absorption of the incident solar spectrum by incorporating a 1D photonic crystal at the cell’s bottom, facilitating the photon recycling process. The proposed solar cell parameters are numerically computed using the rigorous coupled wave algorithm through the SYNOPSYS RSOFT CAD tool. The thickness of each layer in the structure is optimized using the MOST scanning and optimization module of the RSOFT CAD tool, achieving the highest power conversion efficiency at a minimal device thickness (approximately 2.5 m). Remarkably, the power conversion efficiency achieved is 27.5/100, with a fill factor of 87.4/100 at AM 1.5, showcasing great promise. This demonstrates the remarkable potential of the proposed design to achieve efficiencies exceeding 5/100, positioning it as a competitive contender in the existing crystalline silicon photovoltaic market.

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Mounir BOURAS , Salah KHENNOUF , ABDELHAFID Benyounes , ,(2026-01-25), Improve efficiency of Perovskite-Based Solar Cell,9th International Conference of Mathematical Sciences (ICMS 2025),TURKEY

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Mounir BOURAS , , (2025-12-30), Enhancedlighttrappinginthin-filmsperovskite solarcellsbyphotoniccrystalstructure, Aip advences, Vol:16, Issue:1, pages:11, AIP

Thin-film planar heterojunction perovskite solar cells have emerged as promising candidates for next-generation photovoltaic technologies due to their low fabrication cost and high power conversion efficiency (PCE). Among the various materials explored, perovskite (CH3NH3PbI3) based solar cell considering n-i-p structure, stands out as a highly efficient absorber owing to their favorable optoelectronic properties, including high crystallinity, superior carrier mobility, and long diffusion lengths. Despite these advantages, the highest reported PCE for such cells remains at 24.3% (as of 2024). In this work, we present a novel thin-film perovskite solar cell design incorporating hybrid material interfaces and a one-dimensional photonic crystal at the device’s rear side to enhance photon recycling and reduce carrier recombination. Numerical simulations are performed using the Rigorous Coupled Wave Analysis (RCWA) method via the SYNOPSYS RSoft CAD tool, with layer thicknesses optimized using the MOST scanning and optimization module. The proposed architecture achieves a PCE of 22.5% with a fill factor of 89.3% under AM 1.5 solar conditions and a total device thickness of approximately 2.5 um. These results highlight the potential of the proposed design to surpass the 20% efficiency benchmark and offer a competitive alternative to conventional crystalline silicon photovoltaics.

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Moufdi Hadjab , Mounir BOURAS , Salah KHENNOUF , ABDELHAFID Benyounes , , (2025-12-15), Improve Efficiency of Perovskite-Based Solar Cell by Photon Recycling, Boletim da Sociedade Paranaense de Matemática, Vol:43, Issue:7, pages:1-10, Sociedade Brasileira de Matematica

ICATEEE2025

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Mounir BOURAS , ,(2025-12-10), ICATEEE2025,ICATEEE2025,unuversity of m'sila

Machine learning and deeplearning

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Mounir BOURAS , ,(2025-11-01), Machine learning and deeplearning,Machine learning and deeplearning,unuverty of msila

Machine learning and deeplearning

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Mounir BOURAS , ,(2025-11-01), Machine learning and deeplearning,Machine learning and deeplearning,unuverty of msila

A_Deep_Learning_Approach_using_ResNet_50_for_Arabic_Sign_Language_Recognition atte.pdf

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ABDELHAFID Benyounes , Mounir BOURAS , ABDELGHAFOUR Herizi , Salah KHENNOUF , FAYSSAL Ouagueni , ,(2025-09-02), A Deep Learning Approach using ResNet-50 for Arabic Sign Language Recognition,ICMS 2025,turkey

IEEE

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Mounir BOURAS , ,(2025-05-13), IEEE,IEEE,ONLINE

NC-REAEE'25

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Mounir BOURAS , ,(2025-05-06), NC-REAEE'25,NC-REAEE'25,unuverty of msila

NC-REAEE'25

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Mounir BOURAS , ,(2025-05-06), NC-REAEE'25,NC-REAEE'25,unuverty of msila

NC-REAEE'25

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Mounir BOURAS , ,(2025-05-06), NC-REAEE'25,NC-REAEE'25,Unuversity of m'sila

AA

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Mounir BOURAS , ,(2024-12-24), SOLAR CELL ALGERIA,International Conference on Electrical Engineering,ALGER

AA

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Mounir BOURAS , ,(2024-10-23), SOLAR CELL,NANOMATERIAL 2024,TUNISIA

AA

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Mounir BOURAS , ,(2024-10-23), OPTICAL MATERIAL,NANOMATERIAL 2024,TUNISIA

Surface Plasmon Resonance (SPR) serves as a crucial optical technique in the realm of chemical sensing. Under specific conditions, the reflectivity of a thin metal film exhibits an exceptional sensitivity to optical changes in the medium on one side. In this investigation, we propose and simulate a plasmonic sensor incorporating a silicon nitride grating with Ag layers for the detection of solution and gas at an optical communication wavelength of 1550 nm. In both cases of the surface diffraction-grating, there is a notable enhancement in angular sensitivity compared to conventional prism-coupled configurations. Simulations, employing rigorous coupled wave analysis (RCWA), highlight that the suggested sensor, optimized in design parameters, offers notably superior sensitivity, a lower detection limit, and a higher figure of merit (FOM) than existing grating-based SPR sensors. This implies the potential realization of refractive index sensors with a high figure of merit through such streamlined and compact configurations.

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Mounir BOURAS , , (2024-02-12), High-Performance Silicon Nitride Grating-Coupled SPR Sensors for Gas Detection and Biosensing, Progress In Electromagnetics Research Letters, Vol:21, Issue:3, pages:187–195, PIER

QAA

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Mounir BOURAS , ,(2024-02-12), hh,nn,ALGER

Nanostructure based perovskite solar cells with high performance are the focus of study in current work, keeping in view the improvement in cell efficiency. In the rst part of the study, a plane-layered solar cell is studied by adding a 1D Photonic Crystal (1D PhC) at the bottom of the cell in order to facilitate the photon rotation process. However, in the second part of the study, it is observed that the addition of grating enhances the light absorption due to photon trapping. Following that, the light absorption of three different structures is compared. The observations reveal that the short-circuit current density (Jsc) is found to be 􀀀39:93mA/cm2, which is 87.29% higher than that for a planar structure exhibiting the short-circuit current density (Jsc) value of 􀀀21:32mA/cm2. Finally, the efficiencies of these nanostructured perovskite solar cells are found to be signicant. For the proposed solar cell structure an 87.24% improvement in the power conversion efficiency (PCE) is observed, i.e., from 14.03% for the planar structure to 26.27%.

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Mounir BOURAS , , (2023-01-15), Light Trapping for Absorption Control in Perovskite-Based Photovoltaic Solar Cells, Progress In Electromagnetics Research Letters, Vol:108, Issue:1, pages:43-48, PIER

Nanostructure based perovskite solar cells with high performance are the focus of study in current work, keeping in view the improvement in cell efficiency. In the rst part of the study, a plane-layered solar cell is studied by adding a 1D Photonic Crystal (1D PhC) at the bottom of the cell in order to facilitate the photon rotation process. However, in the second part of the study, it is observed that the addition of grating enhances the light absorption due to photon trapping. Following that, the light absorption of three different structures is compared. The observations reveal that the short-circuit current density (Jsc) is found to be 􀀀39:93mA/cm2, which is 87.29% higher than that for a planar structure exhibiting the short-circuit current density (Jsc) value of 􀀀21:32mA/cm2. Finally, the efficiencies of these nanostructured perovskite solar cells are found to be signicant. For the proposed solar cell structure an 87.24% improvement in the power conversion efficiency (PCE) is observed, i.e., from 14.03% for the planar structure to 26.27%.

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Maroua chahmi , Mounir BOURAS , Moufdi Hadjab , , (2022-12-11), Light Trapping for Absorption Control in Perovskite-Based Photovoltaic Solar Cells, Progress In Electromagnetics Research Letters, Vol:108, Issue:2023, pages:41{48, PIER

Nowadays, sensor technology has attracted great interest in various domains. In this work, we have analyzed a one dimensional phononic crystal made by the stack of N bilayers of (LiNbO3/SiO2). The sensor design consists of a one dimensional phononic crystal structure with a defect layer inserted in the middle. Using the Transfer Matrix Method (TMM), the transmission spectrums of acoustic waves are calculated and plotted. In this work, we are interested in the resonance peak that is transmitted inside the phononic band gap. The results obtained show clearly that the resonant frequency of the measured transmission peak is very sensitive to the layer defect properties. This proves that such structure offers a new platform for sensing applications.

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Mounir BOURAS , , (2022), Design of a Thickness Sensor Based on a One-Dimensional Phononic Crystal, Instrumentation Mesure Métrologie, Vol:11, Issue:1, pages:187–195, I2M

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Mounir BOURAS , ,(2022), Optimization study of perovskite-based solar cells using R-soft package,Instrumentation Mesure Métrologie,TURKY

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Mounir BOURAS , ,(2022), H,Q,MSILA

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Mounir BOURAS , ,(2022), K,K,MSILA

This work utilizing “RSOFT’s Diffract MOD and solar Cell Utility” based on RCWA calculation to analyze the behavior of the solar cell and to compute the PCE (power conversion efficiency) (RSoft CAD photonic device tools) was used to study the effect of the materials used in the different layers of the perovskitebased solar cell on the efficiency of this cell. We used perovskite as the active layer, PDMS as a window layer, ZnS as ETL (electron transport layer) and AZO as HTL (hole transport layer). and make a change of reflective layer from Au (Gold) to different reflective layers candidate have been suggested. So that in the beginning we used gold as a reflective layer, we found the efficiency of this cell estimated at 21.43%, we changed the reflective gold layer with different other reflective layers such as (Al, Cr, Be, Ni, Ti…) in order to increase the efficiency of this solar cell and reduce the cost because the cost of gold is high, we found that the efficiency increased in most of the candidates to reach 24.23% when Be was placed as a reflective layer, and this is a significant increase in the efficiency of the solar cell.

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Maroua chahmi , Mounir BOURAS , Moufdi Hadjab , ,(2022), Improve Efficiency and Reduce Cost of Perovskite-Based Solar Cell,ICATEEE 2022,University Mohamed Boudiaf of M’sila

In this paper, we have proposed a new design, to enhance and simulate a Highly Sensitive Mach-Zehnder Interferometer (MZI) Biochemical sensing platform using a Silicon Rib Waveguide. We considered two different MZI configurations: the first one with an S-bend & Y-junction and the second with an angular Y-junction. We determined the critical cutoff radius and the critical cut-off angle for the S-bend & Y-junction and the angular Yjunction configurations respectively. Based on the analyses of the evanescent field intensity, the mode polarization and cross section dimensions of the Silicon Rib waveguide are optimized using beam propagation method. The critical parameters of the design are calculated to ensure minimal optical losses and a new sensitivity value of 308 dB/RIU with a detection limit of 10-7, which shows the ability of the structure to produce biosensor.

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Mounir BOURAS , , (2022), A New Design for Enhancing Highly Sensitive Interferometer Biosensor Using a Silicon Rib Waveguide, Instrumentation Mesure Métrologie, Vol:21, Issue:3, pages:187–195, I2M

The study aims to evaluate the Faraday rotation of one-dimensional structure coupled resonator magneto-plasmonics by a metal cover layer. To this purpose, we used SiO2/ZrO2 or SiO2 /TiO2 crystals doped with magnetic nanoparticles by sol-gel process in different configurations and a gold layer of 10 nm thick for the excitation of the surface Plasmon Polaritons (SPPs). Based on Tamm plasmon, a wide range of wavelengths is detected by which the merit factor increases due to the interaction of light with the Tamm plasmon and surprisingly the optical window in this region in addition to the main resonance. These structures offer the opportunity to improve the performance of magneto-optical devices.

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Mounir BOURAS , , (2022), Boosting faraday rotation in a one-dimensional coupled resonator magneto-plasmonics structure made by silica matrix doped with magnetic nanoparticles, Advanced Electromagnetics, Vol:21, Issue:3, pages:109-112, AEM

Nowadays, sensor technology has attracted great interest in various domains. In this work, we have analyzed a one dimensional phononic crystal made by the stack of N bilayers of (LiNbO3/SiO2). The sensor design consists of a one dimensional phononic crystal structure with a defect layer inserted in the middle. Using the Transfer Matrix Method (TMM), the transmission spectrums of acoustic waves are calculated and plotted. In this work, we are interested in the resonance peak that is transmitted inside the phononic band gap. The results obtained show clearly that the resonant frequency of the measured transmission peak is very sensitive to the layer defect properties. This proves that such structure offers a new platform for sensing applications.

Citation

Mounir BOURAS , , (2022), Design of a Thickness Sensor Based on a One-Dimensional Phononic Crystal, Instrumentation Mesure Métrologie, Vol:23, Issue:3, pages:187–195, I2M

Étude théorique des matériaux a cristaux photoniques unidimensionnels : applications dans le domaine de détection

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MounirBOURAS , ,(2022); Étude théorique des matériaux a cristaux photoniques unidimensionnels : applications dans le domaine de détection,MSILA UNIVERSITY,

In this paper, we have proposed a new design, to enhance and simulate a Highly Sensitive Mach-Zehnder Interferometer (MZI) Biochemical sensing platform using a Silicon Rib Waveguide. We considered two different MZI configurations: the first one with an S-bend & Y-junction and the second with an angular Y-junction. We determined the critical cutoff radius and the critical cut-off angle for the S-bend & Y-junction and the angular Yjunction configurations respectively. Based on the analyses of the evanescent field intensity, the mode polarization and cross section dimensions of the Silicon Rib waveguide are optimized using beam propagation method. The critical parameters of the design are calculated to ensure minimal optical losses and a new sensitivity value of 308 dB/RIU with a detection limit of 10-7, which shows the ability of the structure to produce biosensor.

Citation

Salah KHENNOUF , Mounir BOURAS , , (2022), A New Design for Enhancing Highly Sensitive Interferometer Biosensor Using a Silicon Rib Waveguide, Instrumentation Mesure Métrologie, Vol:21, Issue:6, pages:231-236, International Information and Engineering Technology Association

The study aims to evaluate the Faraday rotation of one-dimensional structure coupled resonator magneto-plasmonics by a metal cover layer. To this purpose, we used SiO2/ZrO2 or SiO2 /TiO2 crystals doped with magnetic nanoparticles by sol-gel process in different configurations and a gold layer of 10 nm thick for the excitation of the surface Plasmon Polaritons (SPPs). Based on Tamm plasmon, a wide range of wavelengths is detected by which the merit factor increases due to the interaction of light with the Tamm plasmon and surprisingly the optical window in this region in addition to the main resonance. These structures offer the opportunity to improve the performance of magneto-optical devices.

Citation

Mounir BOURAS , , (2021), Boosting faraday rotation in a one-dimensional coupled resonator magneto-plasmonics structure made by silica matrix doped with magnetic nanoparticles, Advanced Electromagnetics, Vol:10, Issue:1, pages:109-112, AEM

In this study, 1D Photonic Crystal (PhC) with Nematic Liquid Crystal (N-LC) central microcavity is analyzed and discussed using Rigorous Coupled Wave Analysis (RCWA) method. A microcavity is inserted into the 1D PhC by the Air Defect, making it ideal for measuring the properties of an N-LC contained inside the microcavity. Here simulation is considered for NLC (E7) as a thermal sensor. The principle of photonic crystal thermal sensor operation is studied in the TE mode of the incident beam. We conduct a detailed study of the thermal sensor with differences in the width of central microcavity of N-LC. The sensitivity and quality factor are evaluated

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Mounir BOURAS , , (2021), High-Sensitive Thermal Sensor Based on a 1D Photonic Crystal Microcavity with Nematic Liquid Crystal, Progress In Electromagnetics Research M, Vol:3, Issue:3, pages:109-112, PIER

Étude théorique des cristaux magnéto-photoniques unidimensionnels pour l’amélioration de l’effet faraday

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MounirBOURAS , ,(2021); Étude théorique des cristaux magnéto-photoniques unidimensionnels pour l’amélioration de l’effet faraday,MSILA UNIVERSITY,

Boosting Faraday rotation in a one-dimensional coupled resonator magnetoplasmonic structure made by silica matrix doped with magnetic nanoparticles.

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Mounir BOURAS , ,(2021), Boosting Faraday rotation in a one-dimensional coupled resonator magnetoplasmonic structure made by silica matrix doped with magnetic nanoparticles.,The 11th International Conference on Metamaterials, Photonic Crystals and Plasmonics,POLAND

DD

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Mounir BOURAS , ,(2020), Modeling of photonic band gap in 1D magneto-photonic crystals made by SiO2/ZrO2 or SiO2/TiO2 doped with magnetic nanoparticles ‏,ICEE,TURKY

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Mounir BOURAS , ,(2020), Phononic band gap of longitudinal acoustic waves in one-dimensional crystal for ultrasonic applications,The 11th International Conference on Metamaterials, Photonic Crystals and Plasmonics,POLAND

QQ

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Mounir BOURAS , ,(2020), Optimization study of perovskite-based solar cells using R-soft package,International Conference on Electrical Engineering (ICEE),TURKY

This paper focuses on studying the potential of CoFe2O4-doped magnetic nanoparticles SiO2 / ZrO2 matrix to produce high-performance one-dimensional magnetophotonic crystals (MPC) and to solve the problem of integrating magneto-optical devices. Given the importance of the magneto-optical Faraday effecton most non-reciprocal optical components, we studied the influence of different 1D structures on Faraday rotations.The potential of these structures offers a wide range of applications in the field of miniaturized and integrated non-reciprocal devicessuch as isolators.

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Mounir BOURAS , , (2019), Existence of high Faraday rotation and transmittance in magneto photonic crystals made by silica matrix doped with magnetic nanoparticles, Optik, Vol:198, Issue:12, pages:163225, Urban & Fischer

In this paper, we present a study on the photonic band gap of one-dimensional photonic crystals made by SiO2/ZrO2 or SiO2/TiO2 doped with magnetic nanoparticles using the sol–gel process. The studied structure consists of a multilayer of SiO2/ZrO2 or SiO2/TiO2 and air gap with lattice constant a = 0.70 μm. The structure is characterized by a background refractive index of 1.51. We started by introducing one defect at different locations, then we followed by two and three defects at different locations. The results obtained show clearly that these magnetic micro-cavities may serve as a fundamental structure in a variety of ultra-compact magneto photonic devices such as optical isolators and modulators in the future.

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Mounir BOURAS , , (2019), Magneto-Photonic Crystal Micro-Cavities in One Dimensional Photonic Crystals Fabricated by Sol Gel Process, Journal of Nanoelectronics and Optoelectronics, Vol:14, Issue:8, pages:1002, American Scientific Publishers

A one-dimensional (1-D) photonic crystal (PhC) composed of multilayer thin films having the form (Si  /  Air)9 is investigated. The selection of Si and air is because their use as a material platform provides the ability to fabricate sensors with other photonic devices on a single chip. We design a biosensor concept that uses an optical resonance in a 1-D silicon PhC with an air defect, which is theoretically studied for refractive index (RI) sensing in the infrared wavelength region (700 to 1900 nm). A similar crystal with a defect layer by changing the dielectric constant in different orders is also studied. A method is presented to maximize the sensitivity of the biosensor and to obtain a very narrow bandwidth cavity mode for good biosensor resolution. We optimized the thickness of the air defect layer in the PhCs on both sides of the nanocavity and show that a high sensitivity value of 1118 nm/refractive index unit (RIU

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Mounir BOURAS , , (2019), Analysis of highly sensitive biosensor for glucose based on a one-dimensional photonic crystal nanocavity, Optical Engineering, Vol:58, Issue:2, pages:950, International Society for Optics and Photonics

We have investigated the optical properties of one-dimensional photonic crystals composed of multilayer thin films having the form (AB) 7, where A=Si and B=Air for the oblique light incidence and with defect layer. The selection of Si and Air is that because of their wide applications like beam splitting, high reflecting mirrors and antireflection coating. The properties of the structure are simulated using the Rigorous Coupled Wave Analysis (RCWA) method. The bandgap of the photonic crystal was also calculated. It is found that the bandgaps exist in the region (700–1900 nm). Similar crystal oblique light incidence and with central air defect by changing the position and with defect, respectively, in different orders was also studied. It is found that both position and width depend on the incidence angle and defect parameters

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Mounir BOURAS , ,(2019), Effect of Oblique Light Incidence and cavity length on band-gap properties of One Dimensional Photonic Crystals,ICCESEN-2019,turky

This paper focuses on studying the potential of CoFe2O4-doped magnetic nanoparticles SiO2 / ZrO2 matrix to produce high-performance one-dimensional magnetophotonic crystals (MPC) and to solve the problem of integrating magneto-optical devices. Given the importance of the magneto- optical Faraday effecton most non-reciprocal optical components, we studied the influence of different 1D structures on Faraday rotations.The potential of these structures offers a wide range of applications in the field of miniaturized and integrated non-reciprocal devicessuch as isolators.

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Mounir BOURAS , , (2019), Existence of high Faraday rotation and transmittance in magneto photonic crystals made by silica matrix doped with magnetic nanoparticles, OPTIK, Vol:198, Issue:3, pages:109-112, ELSIVIER

A one-dimensional (1-D) photonic crystal (PhC) composed of multilayer thin films having the form ðSi∕AirÞ 9 is investigated. The selection of Si and air is because their use as a material platform provides the ability to fabricate sensors with other photonic devices on a single chip. We design a biosensor concept that uses an optical resonance in a 1-D silicon PhC with an air defect, which is theoretically studied for refractive index (RI) sensing in the infrared wavelength region (700 to 1900 nm). A similar crystal with a defect layer by changing the dielectric constant in different orders is also studied. A method is presented to maximize the sensitivity of the biosensor and to obtain a very narrow bandwidth cavity mode for good biosensor resolution. We optimized the thickness of the air defect layer in the PhCs on both sides of the nanocavity and show that a high sensitivity value of 1118 nm/refractive index unit (RIU) with a detection limit of 0.001 RIU, which proves the ability of the design to produce biosensor PhC. This optical biosensor has a very much higher sensitivity and simpler structure compared to other PhC biosensors reported previously.

Citation

Mounir BOURAS , , (2019), Analysis of highly sensitive biosensor for glucose based on a one-dimensional photonic crystal nanocavity, Optical Engineering, Vol:58, Issue:2, pages:187–195, SPIE

In this paper, we present a study on the photonic band gap of one-dimensional photonic crystals made by SiO2/ZrO2 or SiO2/TiO2 doped with magnetic nanoparticles using the sol–gel process. The studied structure consists of a multilayer of SiO2/ZrO2 or SiO2/TiO2 and air gap with lattice constant a= 0.70 m. The structure is characterized by a background refractive index of 1.51. We started by introducing one defect at different locations, then we followed by two and three defects at different locations. The results obtained show clearly that these magnetic micro-cavities may serve as a fundamental structure in a variety of ultra-compact magneto photonic devices such as optical isolators and modulators in the future.

Citation

Mounir BOURAS , , (2019), Magneto-Photonic Crystal Micro-Cavities in One Dimensional Photonic Crystals Fabricated by Sol Gel Process, J. Nanoelectron. Optoelectron., Vol:14, Issue:3, pages:5, American Scientific Publishers