Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide

Kapil Debnath; Karl Welna; Marcello Ferrera; Kieran Deasy; David Lidzey; Thomas F. Krauss; Liam O'Faolain

doi:10.1117/12.909389

2 February 2012 Highly efficient coupling between a monolithically integrated photonic crystal cavity and a bus waveguide

Kapil Debnath, Karl Welna, Marcello Ferrera, Kieran Deasy, David Lidzey, Thomas F. Krauss, Liam O'Faolain

Author Affiliations +

Proceedings Volume 8264, Integrated Optics: Devices, Materials, and Technologies XVI; 82640F (2012) https://doi.org/10.1117/12.909389
Event: SPIE OPTO, 2012, San Francisco, California, United States

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.

Citation Download Citation

Kapil Debnath, Karl Welna, Marcello Ferrera, Kieran Deasy, David Lidzey, Thomas F. Krauss, and 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); https://doi.org/10.1117/12.909389

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