A superprism-based photonic crystal demultiplexer in nearly-perfect collimation conditions

Eric Cassan; Damien Bernier; Anatole Lupu; Xavier Le Roux; Delphine Marris-Morini; Laurent Vivien

doi:10.1117/12.853784

13 May 2010 A superprism-based photonic crystal demultiplexer in nearly-perfect collimation conditions

Eric Cassan, Damien Bernier, Anatole Lupu, Xavier Le Roux, Delphine Marris-Morini, Laurent Vivien

Proceedings Volume 7713, Photonic Crystal Materials and Devices IX; 77130J (2010) https://doi.org/10.1117/12.853784
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

Superprism phenomena in planar photonic crystals (PhCs) can be used for the realization of compact demultiplexers. Yet, strong dispersion is most often accompagnied by strong diffraction. The design, fabrication, and experimental characterization of a PhC demultiplexer is presented. A special care is taken to excite the equi-frequency surfaces in dispersive and simultaneously nearly-collimated regions. The structure is fabricated on a SOI substrate using e-beam lithography and RIE etching. With four output channels, its footprint is 2800μm². It is characterized by a -16 dB level of crosstalk around λ = 1550 nm, with 2dB loss.

Citation Download Citation

Eric Cassan, Damien Bernier, Anatole Lupu, Xavier Le Roux, Delphine Marris-Morini, and Laurent Vivien "A superprism-based photonic crystal demultiplexer in nearly-perfect collimation conditions", Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 77130J (13 May 2010); https://doi.org/10.1117/12.853784

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