Bloch mode coupling investigation in silicon-on-insulator W1 photonic crystal waveguide

Benoit Cluzel; Davy Gerard; Emmanuel Picard; Thomas Charvolin; Vincent Calvo; Emmanuel Hadji; Frederique de Fornel

doi:10.1117/12.545735

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15 September 2004 Bloch mode coupling investigation in silicon-on-insulator W1 photonic crystal waveguide

Benoit Cluzel, Davy Gerard, Emmanuel Picard, Thomas Charvolin, Vincent Calvo, Emmanuel Hadji, Frederique de Fornel

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Proceedings Volume 5450, Photonic Crystal Materials and Nanostructures; (2004) https://doi.org/10.1117/12.545735
Event: Photonics Europe, 2004, Strasbourg, France

Abstract

We report in this paper the study of a W1 photonic crystal waveguide which supports two Bloch modes having different parity. A monomode ridge waveguide etched in a Silicon-On-Insulator substrate and connecting to the photonic crystal waveguide allows us to excite the even Bloch mode. Transmission measurements, performed on a broad spectral range, evidence the even mode propagation along the defect line and experimental spectrum is discussed in light of band diagram and FDTD calculations. Then spectrally resolved near-field patterns obtained by using a scanning near field optical microscope in collection mode for wavelengths inside and outside the multimode region of the photonic crystal waveguide clearly demonstrate the even mode parity change along the defect line.

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Benoit Cluzel, Davy Gerard, Emmanuel Picard, Thomas Charvolin, Vincent Calvo, Emmanuel Hadji, and Frederique de Fornel "Bloch mode coupling investigation in silicon-on-insulator W1 photonic crystal waveguide", Proc. SPIE 5450, Photonic Crystal Materials and Nanostructures, (15 September 2004); https://doi.org/10.1117/12.545735

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