Résultat de la recherche
2 résultat(s) recherche sur le tag 'la méthode PWE' 
Visionner les documents numériques
Affiner la recherche Générer le flux rss de la recherche
Partager le résultat de cette recherche Interroger des sources externesConception des filtres optiques a base de cristaux photoniques pour application dans les routeurs optiques dans les reseaux de telecomunications optiques / Abdelali Boudissa
Titre : Conception des filtres optiques a base de cristaux photoniques pour application dans les routeurs optiques dans les reseaux de telecomunications optiques Type de document : texte imprimé Auteurs : Abdelali Boudissa, Auteur ; Malek Benslama, Directeur de thèse Editeur : Constantine : Université Mentouri Constantine Année de publication : 2013 Importance : 87 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : Cristaux photoniques couplage cavité-guide d’onde cavité résonante filtre optique Filtre Passe Bande Channel Drop Filter la méthode FDTD la méthode PWE Photonic crystal coupled cavity waveguides resonant cavity optical filter Band Pass Filter FDTD method PWE method ???????? ??????? ?????? ?????? ????? ???? ???? ???? ??? ?????? ?????PW ?????FDTD ???? ???? ???? Index. décimale : 621 Electronique Résumé : The implanting of optical routers in telecommunication optical network necessitates the modeling constituent’s amounts and approvals which encircle the considered router. For it, in this work, we investigate three types of filters with base 2D photonic crystals. The first, it is a narrow band optical filter, this system is constituted with two waves guides obtained by omitting one row of holes of the photonic crystal, coupled among them by a resonant cavity formed by a point of defect in the crystal. Near the resonant frequency (??a/2πc = 0.38), light from the input waveguide can couple into the cavity, and the cavity in turn can couple into the output waveguide, is that the peak transmission is precisely 100%.Then a Band Pass Filter is proposed, the out put transmission spectra of our filter covered three band. Band I covers the wavelength range from 1.331 to 1.355 μm has 86% of transmission power, Band II, from 1.390 to 1.427 μm, has 98% of the transmission power and Band III from 1.46 to 1.507 μm, and has 27% of the transmission power. The full width at half maximum bandwidth of these bands is 9.7, 13.1 and 16.4 nm,respectively. And finally a new constitution of “Channel Drop Filter " is simulated, it consists of two waveguides bends coupled among them by linear resonant cavity. The power dropped from the input waveguide bend into the drop channel at 1550 nm (the resonant frequency)is about 89%; the power transferred to the other channels is less than 5%. The Band of out put transmission spectra of the drop channel cover the wavelength range from 1505 to 1600 nm and the bandwidth is about 12.7 nm and the Q factor is 122.
The temporal and spectral behavior of the device is studied using two dimensional Finite Difference Time Domain Method (2D-FDTD) and Plane Wave Expansion (PWE) methods respectively.Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU6325.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6291 Conception des filtres optiques a base de cristaux photoniques pour application dans les routeurs optiques dans les reseaux de telecomunications optiques [texte imprimé] / Abdelali Boudissa, Auteur ; Malek Benslama, Directeur de thèse . - Constantine : Université Mentouri Constantine, 2013 . - 87 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : Cristaux photoniques couplage cavité-guide d’onde cavité résonante filtre optique Filtre Passe Bande Channel Drop Filter la méthode FDTD la méthode PWE Photonic crystal coupled cavity waveguides resonant cavity optical filter Band Pass Filter FDTD method PWE method ???????? ??????? ?????? ?????? ????? ???? ???? ???? ??? ?????? ?????PW ?????FDTD ???? ???? ???? Index. décimale : 621 Electronique Résumé : The implanting of optical routers in telecommunication optical network necessitates the modeling constituent’s amounts and approvals which encircle the considered router. For it, in this work, we investigate three types of filters with base 2D photonic crystals. The first, it is a narrow band optical filter, this system is constituted with two waves guides obtained by omitting one row of holes of the photonic crystal, coupled among them by a resonant cavity formed by a point of defect in the crystal. Near the resonant frequency (??a/2πc = 0.38), light from the input waveguide can couple into the cavity, and the cavity in turn can couple into the output waveguide, is that the peak transmission is precisely 100%.Then a Band Pass Filter is proposed, the out put transmission spectra of our filter covered three band. Band I covers the wavelength range from 1.331 to 1.355 μm has 86% of transmission power, Band II, from 1.390 to 1.427 μm, has 98% of the transmission power and Band III from 1.46 to 1.507 μm, and has 27% of the transmission power. The full width at half maximum bandwidth of these bands is 9.7, 13.1 and 16.4 nm,respectively. And finally a new constitution of “Channel Drop Filter " is simulated, it consists of two waveguides bends coupled among them by linear resonant cavity. The power dropped from the input waveguide bend into the drop channel at 1550 nm (the resonant frequency)is about 89%; the power transferred to the other channels is less than 5%. The Band of out put transmission spectra of the drop channel cover the wavelength range from 1505 to 1600 nm and the bandwidth is about 12.7 nm and the Q factor is 122.
The temporal and spectral behavior of the device is studied using two dimensional Finite Difference Time Domain Method (2D-FDTD) and Plane Wave Expansion (PWE) methods respectively.Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU6325.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=6291 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6325 BOU/6325 Thèse Bibliothèque principale Thèses Disponible Documents numériques
texte intégraleAdobe Acrobat PDF
Titre : Etude theorique des materiaux a bandes interdites photoniques bidimensionnels : applications dans le domaine du guidage optique et la detection Type de document : texte imprimé Auteurs : Feida Bougriou, Auteur ; Touraya Bouchemat -Boumaza, Directeur de thèse Editeur : constantine [Algérie] : Université Constantine 1 Année de publication : 2013 Importance : 158 f. Format : 30 cm. Note générale : 2 copies imprimées disponibles Langues : Français (fre) Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques guide d'ondes à CP guides virages Senseur à haute
sensibilité la méthode FDTD la méthode PWE Photonic crystal bend waveguide PC waveguide PC sensor High sensitivity FDTD method PWE method ???????? ????????? ???? ?????? ?? ???????? ????????? ???? ?????? ??????? ????? ????????? ???????? ??????? ?????
FDTD ?????
PWE FDTDIndex. décimale : 621 Electronique Résumé : Photonic crystals are nanostructured materials with submicron feature sizes allow unprecedented control of light confinement and enable the miniaturization of main optical functions. Precisely, this thesis is a body of work that builds on the design and development of new components based on photonic crystals for applications in light guiding and high sensitivity detection, using a method based on solving Maxwell's equations finite difference in the 2D-FDTD dimensional time domain.
The single line defect photonic crystal waveguide is one of the devices that have been widely explored. Most photonic crystal waveguide structures are designed and fabricated in triangular lattice with circular holes. We designed a single row W1 triangular lattice with a
judicious choice of parameters guide. We evaluated the transmission in the guide and we got a maximum transmission about of 60% on the entire band related to the PBG. Another type of guide has been designed, it is the bend guide W1 triangular lattice, by optimizing the topology of the bend, we have shown that the transmission bend circuit is much improved over a wide range.
PC waveguide is one class of PC devices that has been demonstrated for RI (refractive index) measurements. For the development of two dimensional reconfigurable photonic circuits, we propose an RI sensor based on single line PCW structure.
When the PC’s air holes are full of homogenous de-ionized water, the wavelength position of band edges of this sensor will shift accordingly due to the variation of RI. The sensor is sensitive to the change of RI in the air hole and it can be optimized to realize high sensitivity,wide measurement range and improved transmission. It has been observed that a 306 nm
wavelength position of the lower band edge shift was observed corresponding to a sensitivity of more than 927 nm/RIU (refractive index nit).Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU6431.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9455 Etude theorique des materiaux a bandes interdites photoniques bidimensionnels : applications dans le domaine du guidage optique et la detection [texte imprimé] / Feida Bougriou, Auteur ; Touraya Bouchemat -Boumaza, Directeur de thèse . - constantine (Route ain el bey, Algérie) : Université Constantine 1, 2013 . - 158 f. ; 30 cm.
2 copies imprimées disponibles
Langues : Français (fre)
Catégories : Français - Anglais
ElectroniqueTags : cristaux photoniques guide d'ondes à CP guides virages Senseur à haute
sensibilité la méthode FDTD la méthode PWE Photonic crystal bend waveguide PC waveguide PC sensor High sensitivity FDTD method PWE method ???????? ????????? ???? ?????? ?? ???????? ????????? ???? ?????? ??????? ????? ????????? ???????? ??????? ?????
FDTD ?????
PWE FDTDIndex. décimale : 621 Electronique Résumé : Photonic crystals are nanostructured materials with submicron feature sizes allow unprecedented control of light confinement and enable the miniaturization of main optical functions. Precisely, this thesis is a body of work that builds on the design and development of new components based on photonic crystals for applications in light guiding and high sensitivity detection, using a method based on solving Maxwell's equations finite difference in the 2D-FDTD dimensional time domain.
The single line defect photonic crystal waveguide is one of the devices that have been widely explored. Most photonic crystal waveguide structures are designed and fabricated in triangular lattice with circular holes. We designed a single row W1 triangular lattice with a
judicious choice of parameters guide. We evaluated the transmission in the guide and we got a maximum transmission about of 60% on the entire band related to the PBG. Another type of guide has been designed, it is the bend guide W1 triangular lattice, by optimizing the topology of the bend, we have shown that the transmission bend circuit is much improved over a wide range.
PC waveguide is one class of PC devices that has been demonstrated for RI (refractive index) measurements. For the development of two dimensional reconfigurable photonic circuits, we propose an RI sensor based on single line PCW structure.
When the PC’s air holes are full of homogenous de-ionized water, the wavelength position of band edges of this sensor will shift accordingly due to the variation of RI. The sensor is sensitive to the change of RI in the air hole and it can be optimized to realize high sensitivity,wide measurement range and improved transmission. It has been observed that a 306 nm
wavelength position of the lower band edge shift was observed corresponding to a sensitivity of more than 927 nm/RIU (refractive index nit).Diplôme : Doctorat en sciences En ligne : ../theses/electronique/BOU6431.pdf Format de la ressource électronique : Permalink : https://bu.umc.edu.dz/md/index.php?lvl=notice_display&id=9455 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité BOU/6431 BOU/6431 Thèse Bibliothèque principale Thèses Disponible Documents numériques
BOU6431_1.pdfAdobe Acrobat PDF
texte intégraleAdobe Acrobat PDF
