Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide
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We experimentally demonstrate a new optical filter design comprising of a photonic crystal cavity and a low index bus waveguide which are monolithically integrated on a silicon-on-insulator (SOI) platform. We have fabricated oxide clad PhC cavities with a silicon nitride waveguide positioned directly above, such that there is an overlap between the evanescent tails of the two modes. We have realised an extinction ratio of 7.5dB for cavities with total Q of 50,000.
Debnath , K , Welna , K P , Ferrera , M , Deasy , K , Lidzey , D , Krauss , T F & O'Faolain , L 2012 , Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide . in J E Broquin & G N Conti (eds) , Integrated Optics: Devices, Materials, and Technologies XVI : Monday 23 January 2012, San Francisco, California, USA . Proceedings of SPIE-The International Society for Optical Engineering , vol. 8264 , SPIE , Bellingham , pp. 82640F , Conference on Integrated Optics - Devices, Materials, and Technologies XVI , San Francisco , Canada , 23/01/12 . DOI: 10.1117/12.909389conference
Integrated Optics: Devices, Materials, and Technologies XVI
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