2 February 2012 Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide
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Abstract
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.
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Kapil Debnath, Kapil Debnath, Karl Welna, Karl Welna, Marcello Ferrera, Marcello Ferrera, Kieran Deasy, Kieran Deasy, David Lidzey, David Lidzey, Thomas F. Krauss, Thomas F. Krauss, Liam O'Faolain, Liam O'Faolain, } "Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide", Proc. SPIE 8264, Integrated Optics: Devices, Materials, and Technologies XVI, 82640F (2 February 2012); doi: 10.1117/12.909389; https://doi.org/10.1117/12.909389
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