Research Papers

Design of photonic crystal directional couplers for electro-optical wavelength switching in Si technology

[+] Author Affiliations
Eric Cassan, Damien Bernier, Delphine Marris-Morini, Guillaume Maire, Laurent Vivien

Institut d'Electronique Fondamentale UMR 8622 CNRS - Universite Paris-Sud

J. Nanophoton. 1(1), 013551 (July 12, 2007). doi:10.1117/1.2768383
History: Received May 15, 2007; Revised July 9, 2007; Accepted July 9, 2007; July 12, 2007; Online July 12, 2007
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Abstract

Electro-optical wavelength switch in Si technology operating around λ = 1.55 μm and based on a photonic crystal directional coupler configuration was studied using Plane Wave Method and Finite Difference Time Domain simulations. Owing to the exploitation of slow wave supermodes, ultra-compact active devices (~ 20 μm) exploiting free carrier plasma dispersion effect in Si can be designed. Injection of input/output strip access waveguides with the photonic core area is optimized using tapering stages to gradually reduce light group velocity. With carrier injection around 1018 cm-3, the coupler configuration can be used as an optical switch of individual wavelengths or a multiplexer/demultiplexer device with active routing of wavelengths.

© 2007 Society of Photo-Optical Instrumentation Engineers

Citation

Eric Cassan ; Damien Bernier ; Delphine Marris-Morini ; Guillaume Maire and Laurent Vivien
"Design of photonic crystal directional couplers for electro-optical wavelength switching in Si technology", J. Nanophoton. 1(1), 013551 (July 12, 2007). ; http://dx.doi.org/10.1117/1.2768383


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