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Titre : Étude & simulation des modèles électrodynamiques par la méthode FDTD : La foudre Type de document : texte imprimé Auteurs : Lahcene Boukelkoul, Auteur ; Salah Leulmi, Directeur de thèse ; Hocine Benalla, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2011 Importance : 98 f. Format : 31 cm. Note générale : Doctorat en sciences
2 copies imprimées disponiblesLangues : Français (fre) Catégories : Français - Anglais
Electro-techniqueTags : Electrodynamique équations de Maxwell FDTD coup de foudre solutions hybrides Index. décimale : 622 Electro-Technique Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/BOU6088.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6016 Étude & simulation des modèles électrodynamiques par la méthode FDTD : La foudre [texte imprimé] / Lahcene Boukelkoul, Auteur ; Salah Leulmi, Directeur de thèse ; Hocine Benalla, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2011 . - 98 f. ; 31 cm.
Doctorat en sciences
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
Electro-techniqueTags : Electrodynamique équations de Maxwell FDTD coup de foudre solutions hybrides Index. décimale : 622 Electro-Technique Diplôme : Doctorat en sciences En ligne : ../theses/electrotec/BOU6088.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6016 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6088 BOU/6088 Thèse Bibliothèque principale Thèses Disponible Application des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. / Chouaib Chettah
Titre : Application des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. Type de document : texte imprimé Auteurs : Chouaib Chettah, Auteur ; Abdelhafid Chaabi, Directeur de thèse Mention d'édition : 18/07/2021 Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2021 Importance : 138 f. Format : 30 cm. Note générale : 1 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Structures périodiques matériaux artificiels cristal photonique FDTD 1D&2D-PCs PWE multicouche unidimensionnelle filtres sélectifs TMM Periodic structures artificial materials photonic crystal multilayer one-dimensional selective filters الهياكل الدورية المعادن الاصطناعية البلوري الفوتوني PWE FDTDمتعدد الطبقات أحادي البعد مرشحات انتقائية Index. décimale : 621 Electronique Résumé :
This work was devoted to the study of the characteristics of periodic structures of artificial materials by the application of numerical methods. Our interest was focused on the study of multilayer structures with one-dimensional photonic crystal by proposing a new design and analysis of these structures. We first recalled the periodic structures based on photonic crystals, their different types, as well as the notions of photonic bands and the basic materials used in these structures. The second chapter approached the FDTD method, we started with the theoretical presentation of the method, then its applications in structures (1D & 2D-PCs). The third chapter, treated the method of plane waves PWE and its application in resonators. We ended with the fourth chapter, where we proposed a new design and analysis of a onedimensional photonic crystal structure (1D-PC), based on the use of artificial materials (dielectricsuperconductors-plasmas) for the design of selective filters, by studying their transmission coefficient and the effects of varying the different parameters (thicknesses, angle of incidence,
magnetic field, temperature) using the TMM method. In the end, we succeeded in making a filter, with a high quality factor, better than the filters of the previous structures; which finds great application utility in the field of optical communication.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHE7795.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11627 Application des méthodes numériques pour la détermination des caractéristiques physiques et optiques des structures périodiques à base des matériaux artificiels. [texte imprimé] / Chouaib Chettah, Auteur ; Abdelhafid Chaabi, Directeur de thèse . - 18/07/2021 . - جامعة الإخوة منتوري قسنطينة, 2021 . - 138 f. ; 30 cm.
1 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Structures périodiques matériaux artificiels cristal photonique FDTD 1D&2D-PCs PWE multicouche unidimensionnelle filtres sélectifs TMM Periodic structures artificial materials photonic crystal multilayer one-dimensional selective filters الهياكل الدورية المعادن الاصطناعية البلوري الفوتوني PWE FDTDمتعدد الطبقات أحادي البعد مرشحات انتقائية Index. décimale : 621 Electronique Résumé :
This work was devoted to the study of the characteristics of periodic structures of artificial materials by the application of numerical methods. Our interest was focused on the study of multilayer structures with one-dimensional photonic crystal by proposing a new design and analysis of these structures. We first recalled the periodic structures based on photonic crystals, their different types, as well as the notions of photonic bands and the basic materials used in these structures. The second chapter approached the FDTD method, we started with the theoretical presentation of the method, then its applications in structures (1D & 2D-PCs). The third chapter, treated the method of plane waves PWE and its application in resonators. We ended with the fourth chapter, where we proposed a new design and analysis of a onedimensional photonic crystal structure (1D-PC), based on the use of artificial materials (dielectricsuperconductors-plasmas) for the design of selective filters, by studying their transmission coefficient and the effects of varying the different parameters (thicknesses, angle of incidence,
magnetic field, temperature) using the TMM method. In the end, we succeeded in making a filter, with a high quality factor, better than the filters of the previous structures; which finds great application utility in the field of optical communication.
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/CHE7795.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11627 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité CHE/7795 CHE/7795 Thèse Bibliothèque principale Thèses Disponible
Titre : Étude des composants à base de cristaux photoniques : Application dans le domaine du démultiplexage et de la détection. Type de document : texte imprimé Auteurs : Safia Arafa, Auteur ; Mohamed Bouchemat, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 150 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques l'optique intégrée biocapteurs démultiplexeur cavité FDTD Photonic crystal integrated optics biosensors demultiplexer cavity لبلورات الضوئية البصريات المتكاملة أجهزة الاستشعار البيولوجية مزيلات الدمج التجويف Index. décimale : 621 Electronique Résumé : Nowadays, the development of biological sensors has become a major issue in order to meet the current and the
future needs in diverse areas demanded. Real-time detection or analysis should be preferred and the response should be easy to read and extremely fast. In parallel, the progress of nanotechnologies and in particular those of photonic crystals, which make it possible to manipulate the light at nanometric resolution, and thus at the biomolecule scale, offers the possibility of achieving a new high-performed detection platform.
In this context, this thesis aims to study and to design refractive index biosensors based on photonic crystals. The structures proposed are essentially based on a H0 cavity coupled waveguide system. The main objective of our work remains the enhancement of light confinement within the cavity area. In the first part of this work we analyze in detail the influence of the cavity geometry on the detection performances. Thus, we present a configuration based on ringed air holes to improve the detection properties. In order to integrate several detection units in the same photonic crystal platform, the wavelength division demultiplexing (WDM) technique to spatially separate the responses of the integrated biosensors will be studied: Two structures of demultiplexers based on a selective filtering will also be presented. As for the case of a single biosensor and based on this technique the configurations of classical and ringed biosensor array will be studied and simultaneously evaluated. The optical properties of these photonic structures will be numerically evaluated by performing simulations based on the finite difference time domain (FDTD) method. The obtained results indicate that the response of each sensor unit shifts independently in terms of refractive index variations. Accordingly, a sensitivity of 450 nm / RIU and a crosstalk of less than -43.78 dB have been achieved for the ringed configuration, while maintaining a quality factor as high as 5.74×104. These features make the designed structure a promising platform for performing monolithic integration and high multiplexed label-free detection.Diplôme : Doctorat En ligne : ../theses/electronique/ARA7278.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10893 Étude des composants à base de cristaux photoniques : Application dans le domaine du démultiplexage et de la détection. [texte imprimé] / Safia Arafa, Auteur ; Mohamed Bouchemat, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 150 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques l'optique intégrée biocapteurs démultiplexeur cavité FDTD Photonic crystal integrated optics biosensors demultiplexer cavity لبلورات الضوئية البصريات المتكاملة أجهزة الاستشعار البيولوجية مزيلات الدمج التجويف Index. décimale : 621 Electronique Résumé : Nowadays, the development of biological sensors has become a major issue in order to meet the current and the
future needs in diverse areas demanded. Real-time detection or analysis should be preferred and the response should be easy to read and extremely fast. In parallel, the progress of nanotechnologies and in particular those of photonic crystals, which make it possible to manipulate the light at nanometric resolution, and thus at the biomolecule scale, offers the possibility of achieving a new high-performed detection platform.
In this context, this thesis aims to study and to design refractive index biosensors based on photonic crystals. The structures proposed are essentially based on a H0 cavity coupled waveguide system. The main objective of our work remains the enhancement of light confinement within the cavity area. In the first part of this work we analyze in detail the influence of the cavity geometry on the detection performances. Thus, we present a configuration based on ringed air holes to improve the detection properties. In order to integrate several detection units in the same photonic crystal platform, the wavelength division demultiplexing (WDM) technique to spatially separate the responses of the integrated biosensors will be studied: Two structures of demultiplexers based on a selective filtering will also be presented. As for the case of a single biosensor and based on this technique the configurations of classical and ringed biosensor array will be studied and simultaneously evaluated. The optical properties of these photonic structures will be numerically evaluated by performing simulations based on the finite difference time domain (FDTD) method. The obtained results indicate that the response of each sensor unit shifts independently in terms of refractive index variations. Accordingly, a sensitivity of 450 nm / RIU and a crosstalk of less than -43.78 dB have been achieved for the ringed configuration, while maintaining a quality factor as high as 5.74×104. These features make the designed structure a promising platform for performing monolithic integration and high multiplexed label-free detection.Diplôme : Doctorat En ligne : ../theses/electronique/ARA7278.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=10893 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité ARA/7278 ARA/7278 Thèse Bibliothèque principale Thèses Disponible
Titre : Étude de microcavités à base de cristaux photoniques : Application aux capteurs RI à haute sensibilité. Type de document : texte imprimé Auteurs : Merzoug Ammari, Auteur ; Farida Hobar, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 96 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Cristaux photoniques Microcavités Capteurs à indice de réfraction Facteur de
qualité Photonic crystal Microcavity Refractive index sensors Quality factor FDTD البلورات الضوئية استشعار انكسار فجوة عامل جودةIndex. décimale : 621 Electronique Résumé : In recent years, various devices based on Photonic Crystal material are designed and
fabricated such as Multiplexers, Filters and Sensors etc. Optical Sensors based on a Photonic principle have also a wide range of applications in the field of health care, defense, security, automotive, aerospace, environment and food quality control.
Photonic crystals with one-and two-dimensional have been studied for a variety of refractive index sensing applications. In this work, we propose a new design principle of two-dimensional photonic crystal (PC) refractive index sensors with high transmission and sensitivity simultaneously. The proposed sensor is made of two waveguide couplers and one microcavity which is obtained by varying the radius of one air hole in the center of PC structure. The microcavity is separated from the input and output waveguides by many holes of the PC. It is shown that by injecting an analyte such as gas or a liquid into a sensing hole, and thus changing its refractive index, a shift in the resonant wavelength may occur. The transmission spectra, quality factor and sensitivity of the sensor have been analyzed numerically through the finite
difference time domain (FDTD) method. The sensitivity value of the sensor has been found to be 668 nm/RIU with minimum detection limit of 0.0002 RIU, which proves the ability of the structure to produce biosensor PCDiplôme : Doctorat en sciences En ligne : ../theses/electronique/AMM7484.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11316 Étude de microcavités à base de cristaux photoniques : Application aux capteurs RI à haute sensibilité. [texte imprimé] / Merzoug Ammari, Auteur ; Farida Hobar, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 96 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Cristaux photoniques Microcavités Capteurs à indice de réfraction Facteur de
qualité Photonic crystal Microcavity Refractive index sensors Quality factor FDTD البلورات الضوئية استشعار انكسار فجوة عامل جودةIndex. décimale : 621 Electronique Résumé : In recent years, various devices based on Photonic Crystal material are designed and
fabricated such as Multiplexers, Filters and Sensors etc. Optical Sensors based on a Photonic principle have also a wide range of applications in the field of health care, defense, security, automotive, aerospace, environment and food quality control.
Photonic crystals with one-and two-dimensional have been studied for a variety of refractive index sensing applications. In this work, we propose a new design principle of two-dimensional photonic crystal (PC) refractive index sensors with high transmission and sensitivity simultaneously. The proposed sensor is made of two waveguide couplers and one microcavity which is obtained by varying the radius of one air hole in the center of PC structure. The microcavity is separated from the input and output waveguides by many holes of the PC. It is shown that by injecting an analyte such as gas or a liquid into a sensing hole, and thus changing its refractive index, a shift in the resonant wavelength may occur. The transmission spectra, quality factor and sensitivity of the sensor have been analyzed numerically through the finite
difference time domain (FDTD) method. The sensitivity value of the sensor has been found to be 668 nm/RIU with minimum detection limit of 0.0002 RIU, which proves the ability of the structure to produce biosensor PCDiplôme : Doctorat en sciences En ligne : ../theses/electronique/AMM7484.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11316 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité AMM/7484 AMM/7484 Thèse Bibliothèque principale Thèses Disponible
Titre : Etude et modélisation d’un guide à cristaux photoniques. Type de document : texte imprimé Auteurs : Leila Benachour, Auteur ; Farida Hobar, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 187 f. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : PWE FDTD CPhs 2D guide d'onde jonction T waveguide T junction المقسم على شكل حرف Tالموجه الموجيPWE Index. décimale : 621 Electronique Résumé : 2D CPh waveguides play an important role in the realization of very dense integrated optical circuits. They are considered appropriate structures for the creation of optoelectronic processors because of their low losses and their great ability to guide and control light. T-Shaped waveguide geometries constitute the first stage of power divider systems for the construction of completely optical digital computing circuits. The objective of this work is in the framework of all the studies carried out in several structures in geometries of waveguides based on 2D CPhs such as: linear guide W1, 90 ° curved guide and the junction in form T, which have a minimum of losses. The use of the FDTD time resolved finite difference method and the PWE plane wave composition method which are necessary for their efficiency in modeling devices in waveguide geometry. For proper performance, the T-shaped divider must be designed to have the lowest reflection at the junction. Indeed, a new topology for the realization of an optical power divider based on a 2D photonic crystal has been demonstrated, using the software Rsoft-CAD with its simulation modules. It has been shown that by creating a chalcogenide glass power divider with a structural improvement in stem size and mesh parameter and by introducing additional rods at the center of the T junction, the rate of the spectral response of the transmitted light will be greater than 99.8% in the optical wavelength λ = 1550nm. In particular, this topology represents an excellent confinement of the light wave so that the optimized divider represents a good parallel improvement of the power transmission at the output. Compared with previous work, this structure shows a more powerful power-energy division with a wide bandwidth [1540-1600] nm. This structure has a recent and diverse activity in the design of all-optical signal processing circuits, optical computer systems and logical functions: XOR, AND, ......
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEN7392.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11042 Etude et modélisation d’un guide à cristaux photoniques. [texte imprimé] / Leila Benachour, Auteur ; Farida Hobar, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 187 f.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : PWE FDTD CPhs 2D guide d'onde jonction T waveguide T junction المقسم على شكل حرف Tالموجه الموجيPWE Index. décimale : 621 Electronique Résumé : 2D CPh waveguides play an important role in the realization of very dense integrated optical circuits. They are considered appropriate structures for the creation of optoelectronic processors because of their low losses and their great ability to guide and control light. T-Shaped waveguide geometries constitute the first stage of power divider systems for the construction of completely optical digital computing circuits. The objective of this work is in the framework of all the studies carried out in several structures in geometries of waveguides based on 2D CPhs such as: linear guide W1, 90 ° curved guide and the junction in form T, which have a minimum of losses. The use of the FDTD time resolved finite difference method and the PWE plane wave composition method which are necessary for their efficiency in modeling devices in waveguide geometry. For proper performance, the T-shaped divider must be designed to have the lowest reflection at the junction. Indeed, a new topology for the realization of an optical power divider based on a 2D photonic crystal has been demonstrated, using the software Rsoft-CAD with its simulation modules. It has been shown that by creating a chalcogenide glass power divider with a structural improvement in stem size and mesh parameter and by introducing additional rods at the center of the T junction, the rate of the spectral response of the transmitted light will be greater than 99.8% in the optical wavelength λ = 1550nm. In particular, this topology represents an excellent confinement of the light wave so that the optimized divider represents a good parallel improvement of the power transmission at the output. Compared with previous work, this structure shows a more powerful power-energy division with a wide bandwidth [1540-1600] nm. This structure has a recent and diverse activity in the design of all-optical signal processing circuits, optical computer systems and logical functions: XOR, AND, ......
Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BEN7392.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=11042 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/7392 BEN/7392 Thèse Bibliothèque principale Thèses Disponible
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