Selective filtering of confined optical ...
Document type :
Compte-rendu et recension critique d'ouvrage
Title :
Selective filtering of confined optical waves in a straight waveguide coupled to a lateral stub
Author(s) :
Pennec, Yan [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Beaugeois, Maxime [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
AKJOUJ, ABDELLATIF [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vasseur, Jérôme [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Dobrzynski, Leonard [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vilcot, Jean-Pierre [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Bouazaoui, Mohamed [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Vigneron, J.P. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Beaugeois, Maxime [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
AKJOUJ, ABDELLATIF [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vasseur, Jérôme [Auteur]
Acoustique - IEMN [ACOUSTIQUE - IEMN]
Dobrzynski, Leonard [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Vilcot, Jean-Pierre [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Bouazaoui, Mohamed [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Vigneron, J.P. [Auteur]
Journal title :
Journal of Optics A: Pure and Applied Optics
Pages :
S431-S436
Publisher :
IOP Publishing
Publication date :
2007
ISSN :
1464-4258
HAL domain(s) :
Sciences de l'ingénieur [physics]
English abstract : [en]
We report numerical simulations, based on a finite difference time domain (FDTD) method, of light propagation in two-dimensional semiconductor micro optical waveguides coupled to one or several lateral stubs. The incident ...
Show more >We report numerical simulations, based on a finite difference time domain (FDTD) method, of light propagation in two-dimensional semiconductor micro optical waveguides coupled to one or several lateral stubs. The incident wave which is of transverse magnetic polarization (TM) is either antisymmetric or symmetric with respect to the middle line parallel to the waveguide. In the presence of one stub we show that the transmission spectrum contains several narrow dips provided that the boundaries of the stub are covered with a perfect metal to avoid the escape of the propagating light. The frequencies of the zeros of transmission are dependent upon the symmetry of the incident wave. This dependence can be explained by comparison with the eigenmodes of a rectangular cavity. We show that the interaction between several stubs produces a widening of the zeros of transmission into band gaps. Inserting an appropriate defect stub between a set of periodical stubs leads to a tunnelling transmission, with a narrow peak inside the gap which can be useful for selective filtering. Finally, we present a numerical calculation on a three-dimensional model which shows the ability of producing similar effects in three-dimensional waveguides.Show less >
Show more >We report numerical simulations, based on a finite difference time domain (FDTD) method, of light propagation in two-dimensional semiconductor micro optical waveguides coupled to one or several lateral stubs. The incident wave which is of transverse magnetic polarization (TM) is either antisymmetric or symmetric with respect to the middle line parallel to the waveguide. In the presence of one stub we show that the transmission spectrum contains several narrow dips provided that the boundaries of the stub are covered with a perfect metal to avoid the escape of the propagating light. The frequencies of the zeros of transmission are dependent upon the symmetry of the incident wave. This dependence can be explained by comparison with the eigenmodes of a rectangular cavity. We show that the interaction between several stubs produces a widening of the zeros of transmission into band gaps. Inserting an appropriate defect stub between a set of periodical stubs leads to a tunnelling transmission, with a narrow peak inside the gap which can be useful for selective filtering. Finally, we present a numerical calculation on a three-dimensional model which shows the ability of producing similar effects in three-dimensional waveguides.Show less >
Language :
Anglais
Popular science :
Non
Source :
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