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Debnath K, Welna K, Ferrera M, et al. Highly efficient optical filter based on vertically coupled photonic crystal cavity and bus waveguide. Opt Lett. 2013;38(2):154-6doi: 10.1364/OL.38.000154.
Debnath, K., Welna, K., Ferrera, M., Deasy, K., Lidzey, D. G., & O'Faolain, L. (2013). Highly efficient optical filter based on vertically coupled photonic crystal cavity and bus waveguide. Optics letters, 38(2), 154-6. https://doi.org/10.1364/OL.38.000154
Debnath, Kapil, et al. "Highly efficient optical filter based on vertically coupled photonic crystal cavity and bus waveguide." Optics letters vol. 38,2 (2013): 154-6. doi: https://doi.org/10.1364/OL.38.000154
Debnath K, Welna K, Ferrera M, Deasy K, Lidzey DG, O'Faolain L. Highly efficient optical filter based on vertically coupled photonic crystal cavity and bus waveguide. Opt Lett. 2013 Jan 15;38(2):154-6. doi: 10.1364/OL.38.000154. PMID: 23454946.
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Opt Lett. 2013 Jan 15;38(2):154-6. doi: 10.1364/OL.38.000154.

Highly efficient optical filter based on vertically coupled photonic crystal cavity and bus waveguide.

Optics letters

Kapil Debnath, Karl Welna, Marcello Ferrera, Kieran Deasy, David G Lidzey, Liam O'Faolain

Affiliations

  1. School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK. kd343@st?andrews.ac.uk

PMID: 23454946 DOI: 10.1364/OL.38.000154

Abstract

We experimentally demonstrate a new optical filter design based on a vertically coupled photonic crystal (PhC) cavity and a bus waveguide monolithically integrated on the silicon-on-insulator platform. The use of a vertically coupled waveguide gives flexibility in the choice of the waveguide material and dimensions, dramatically lowering the insertion loss while achieving very high coupling efficiencies to wavelength scale resonators and thus allows the creation of PhC-based optical filters with very high extinction ratio (>10 dB).

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