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Titre : Étude de cristaux photoniques en silicium pour l'application à la biodétection Type de document : texte imprimé Auteurs : Dallel Benelarbi, Auteur ; Touraya Bouchemat, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 120 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques silicium biocapteurs guide d'onde cavité SOI sensibilité FDTD-2D photonic crystals silicon biosensors waveguide cavity sensitivity البلورات الضوئية سيليسيوم المستشعرات الضوئية الدليل الموجي التجويف .FDTD-2D الحساسبةSOI Index. décimale : 621 Electronique Résumé : This thesis is dedicated to the study and design of new structures for optical detection. Indeed, the development of these optical devices has a growing and particular interest, particularly for targeting and identifying biological species. For this purpose, the photonic crystal-based components (CPs) have been widely exploited in the field of bio-detection.
Silicon is an ideal candidate designated as a support material for the realization of these devices. In this context, new coupling techniques between waveguide and optical cavity based on planar photonic crystals, made on a silicon-on-insulator (SOI) substrate, have been developed. To do this, we are modeling these bio detectors, optimizing their key parameters such as the quality factor and sensitivity to the optical index of the external environment, using commercial software Fullwave and Crystalwave that exploit the finite difference method in the two-dimensional time domain (FDTD-2D). We first studied the parallel coupling between a resonant cavity and a waveguide (W1) for application to the detection of DNA biomolecules. The originality of this study is to consider several sensors on a single platform, and to demonstrate that each sensor could detect a target independently and without interaction with others, without losses, and this, by acting on the parameters influencing the
essential characteristics, we note a high sensitivity and a low limit of detection. As for the second geometry studied, it consists of another coupling path, the latter comprises two sections of guides W1 between which has been arranged a ring cavity. We have also optimized the different structural parameters for this configuration, in order to improve the sensitivity and the quality factor in order to obtain another type of high-performance sensor, namely the temperature sensor. For this, we consider the evolution of the sensitivity as a function of the change in the temperature of the water, convincing results were noted.
Diplôme : Doctorat En ligne : ../theses/electronique/BEN7253.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10845 Étude de cristaux photoniques en silicium pour l'application à la biodétection [texte imprimé] / Dallel Benelarbi, Auteur ; Touraya Bouchemat, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 120 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques silicium biocapteurs guide d'onde cavité SOI sensibilité FDTD-2D photonic crystals silicon biosensors waveguide cavity sensitivity البلورات الضوئية سيليسيوم المستشعرات الضوئية الدليل الموجي التجويف .FDTD-2D الحساسبةSOI Index. décimale : 621 Electronique Résumé : This thesis is dedicated to the study and design of new structures for optical detection. Indeed, the development of these optical devices has a growing and particular interest, particularly for targeting and identifying biological species. For this purpose, the photonic crystal-based components (CPs) have been widely exploited in the field of bio-detection.
Silicon is an ideal candidate designated as a support material for the realization of these devices. In this context, new coupling techniques between waveguide and optical cavity based on planar photonic crystals, made on a silicon-on-insulator (SOI) substrate, have been developed. To do this, we are modeling these bio detectors, optimizing their key parameters such as the quality factor and sensitivity to the optical index of the external environment, using commercial software Fullwave and Crystalwave that exploit the finite difference method in the two-dimensional time domain (FDTD-2D). We first studied the parallel coupling between a resonant cavity and a waveguide (W1) for application to the detection of DNA biomolecules. The originality of this study is to consider several sensors on a single platform, and to demonstrate that each sensor could detect a target independently and without interaction with others, without losses, and this, by acting on the parameters influencing the
essential characteristics, we note a high sensitivity and a low limit of detection. As for the second geometry studied, it consists of another coupling path, the latter comprises two sections of guides W1 between which has been arranged a ring cavity. We have also optimized the different structural parameters for this configuration, in order to improve the sensitivity and the quality factor in order to obtain another type of high-performance sensor, namely the temperature sensor. For this, we consider the evolution of the sensitivity as a function of the change in the temperature of the water, convincing results were noted.
Diplôme : Doctorat En ligne : ../theses/electronique/BEN7253.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=10845 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BEN/7253 BEN/7253 Thèse Bibliothèque principale Thèses Disponible Interaction acousto-optique dans les micro et nano structures périodiques. / Mohamed Lamine Bouchemal
Titre : Interaction acousto-optique dans les micro et nano structures périodiques. Type de document : texte imprimé Auteurs : Mohamed Lamine Bouchemal, Auteur ; Samia Bouhedja, Directeur de thèse Editeur : جامعة الإخوة منتوري قسنطينة Année de publication : 2018 Importance : 94 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles
Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Electronique: Optique Bande interdite Modes de cavité Cristaux photoniques Cristaux phononiques Couplage acousto-optique Comsol Multiphysics Band gap Cavity modes Photonic crystals Phononic crystals Acousto-optical
coupling فجوة النطاق أنماط التجويف البلورات الفوتونية البلورات الصوتية التوصيل البصري الصوتي ComIndex. décimale : 621 Electronique Résumé :
Phoxonic structures (also called phononic-photonic) consist of a periodicity in the refractive index and acoustic impedance in a systematic way and confine acoustic and electromagnetic waves.They lead to new acousto-optical or optomechanical applications. The main objective of this work is to model a crystal that allows the coupling of photonic and phononic band gap phenomena in order to study the acousto-optical interactions that can occur in anoptomechanical cavity by inserting a silicon disc of radius ri. insideinclusions. This analogy between optics and acoustics allows us, on one hand, to increase the efficiency of the insulators and on the other hand, to improve the acoustic characteristics and optimize the electromechanical performances of certain types of transducers used in medical imaging. The simulation of the gap according to the geometric parameters using the COMSOL MULTIPHYSICS software based on the finite element method has shown that the internal radius value ri = r/2 is optimal to obtain a maximum phononic and photonic (TM) width of 75% and 15% simultaneously. This opening obtained from Silicon remains the best compared to gaps of aluminum, SiO2 and epoxy. Finally a thorough study on transmission (results in accordance with the literature) was carried out and has shown another form of investigating of the band gap that confirmed the choice of the inner radius value. The width of the absolute band gap obtained by inserting an internal disc withoptimized radius ri = r/2insures the presence of a large number of well localized modes with a high quality factor which can reach 105. In conclusion, the phoxonic cavity designed with a high quality factor can be used to improve the acousto-optical interaction.Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU7410.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11062 Interaction acousto-optique dans les micro et nano structures périodiques. [texte imprimé] / Mohamed Lamine Bouchemal, Auteur ; Samia Bouhedja, Directeur de thèse . - جامعة الإخوة منتوري قسنطينة, 2018 . - 94 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Electronique: Optique Bande interdite Modes de cavité Cristaux photoniques Cristaux phononiques Couplage acousto-optique Comsol Multiphysics Band gap Cavity modes Photonic crystals Phononic crystals Acousto-optical
coupling فجوة النطاق أنماط التجويف البلورات الفوتونية البلورات الصوتية التوصيل البصري الصوتي ComIndex. décimale : 621 Electronique Résumé :
Phoxonic structures (also called phononic-photonic) consist of a periodicity in the refractive index and acoustic impedance in a systematic way and confine acoustic and electromagnetic waves.They lead to new acousto-optical or optomechanical applications. The main objective of this work is to model a crystal that allows the coupling of photonic and phononic band gap phenomena in order to study the acousto-optical interactions that can occur in anoptomechanical cavity by inserting a silicon disc of radius ri. insideinclusions. This analogy between optics and acoustics allows us, on one hand, to increase the efficiency of the insulators and on the other hand, to improve the acoustic characteristics and optimize the electromechanical performances of certain types of transducers used in medical imaging. The simulation of the gap according to the geometric parameters using the COMSOL MULTIPHYSICS software based on the finite element method has shown that the internal radius value ri = r/2 is optimal to obtain a maximum phononic and photonic (TM) width of 75% and 15% simultaneously. This opening obtained from Silicon remains the best compared to gaps of aluminum, SiO2 and epoxy. Finally a thorough study on transmission (results in accordance with the literature) was carried out and has shown another form of investigating of the band gap that confirmed the choice of the inner radius value. The width of the absolute band gap obtained by inserting an internal disc withoptimized radius ri = r/2insures the presence of a large number of well localized modes with a high quality factor which can reach 105. In conclusion, the phoxonic cavity designed with a high quality factor can be used to improve the acousto-optical interaction.Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU7410.pdf Format de la ressource électronique : Permalink : index.php?lvl=notice_display&id=11062 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/7410 BOU/7410 Thèse Bibliothèque principale Thèses Disponible
