Titre :

Optical transmission properties of an anisotropic defect cavity in one-dimensional photonic crystal

Auteur(s) :

Ouchani, Noama [Auteur correspondant]
Centre Régional des Métiers de l’Education et de la Formation [Casablanca]
El Moussaouy, Abdelaziz [Auteur]
Aynaou, Hassan [Auteur]
جامعة مولاي إسماعيل = Université Moulay Ismaïl [UMI]
El Hassouani, Youssef [Auteur]
El Boudouti, El Houssaine [Auteur]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]

Titre de la revue :

Physics Letters A

Pagination :

231-240

Éditeur :

Elsevier

Date de publication :

2018

ISSN :

0375-9601

Mot(s)-clé(s) en anglais :

Optical properties
Anisotropic media
Coupled modes
Localized modes
Photonic crystal

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

We investigate theoretically the possibility to control the optical transmission in the visible and infrared regions by a defective one dimensional photonic crystal formed by a combination of a finite isotropic superlattice ...
Lire la suite >We investigate theoretically the possibility to control the optical transmission in the visible and infrared regions by a defective one dimensional photonic crystal formed by a combination of a finite isotropic superlattice and an anisotropic defect layer. The Green's function approach has been used to derive the reflection and the transmission coefficients, as well as the densities of states of the optical modes. We evaluate the delay times of the localized modes and we compare their behavior with the total densities of states. We show that the birefringence of an anisotropic defect layer has a significant impact on the behavior of the optical modes in the electromagnetic forbidden bands of the structure. The amplitudes of the defect modes in the transmission and the delay time spectrum, depend strongly on the position of the cavity layer within the photonic crystal. The anisotropic defect layer induces transmission zeros in one of the two components of the transmission as a consequence of a destructive interference of the two polarized waves within this layer, giving rise to negative delay times for some wavelengths in the visible and infrared light ranges. This property is a typical characteristic of the anisotropic photonic layer and is without analogue in their counterpart isotropic defect layers. This structure offers several possibilities for controlling the frequencies, transmitted intensities and the delay times of the optical modes in the visible and infrared regions. It can be a good candidate for realizing high-precision optical filters. (C) 2017 Elsevier B.V. All rights reserved.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL