Efficient photonic crystal directional couplers

We demonstrate highly efficient and spectrally flat broadband coupling in photonic crystal directional couplers. The result is obtained by use of a novel design with smaller holes between coparallel photonic crystal waveguides for efficient channel-to-channel coupling. The system studied is based on...

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Bibliographic Details
Published inOptics letters Vol. 28; no. 17; p. 1525
Main Authors Thorhauge, Morten, Frandsen, Lars H, Borel, Peter I
Format Journal Article
LanguageEnglish
Published United States 01.09.2003
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Summary:We demonstrate highly efficient and spectrally flat broadband coupling in photonic crystal directional couplers. The result is obtained by use of a novel design with smaller holes between coparallel photonic crystal waveguides for efficient channel-to-channel coupling. The system studied is based on a planar hexagonal photonic crystal lattice of holes made in silicon-on-insulator material. Results from three-dimensional finite-difference time domain modeling are shown to closely match results measured on fabricated samples.
ISSN:0146-9592
DOI:10.1364/ol.28.001525