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Proceedings Paper

Cross-slot waveguide Bragg grating
Author(s): Matthieu Roussey; Petri Stenberg; Arijit Bera; Somnath Paul; Jani Tervo; Markku Kuittinen; Seppo Honkanen
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Paper Abstract

A polarization independent band-pass filter is created by combining a silicon cross-slot waveguide and a Bragg grating cavity. By theoretically investigating different types of cavities we show how the sensitivity to polarization of the device can vary, and how we can strongly confine light in a two-dimensional slot waveguide. This kind of structure, where a slot waveguide, a photonic crystal and a nanowire waveguide are merged together, may find applications in the field of sensing. Indeed, a slight variation in the surrounding refractive index breaks the device symmetry. One polarization can thus be used to monitor the fluctuation of the other one. We describe here the principle of a Bragg grating merged with a cross slot waveguide in which a cavity is placed. We discuss the advantage of using different geometries of cavity and how this choice may affect the response of the device.

Paper Details

Date Published: 27 February 2015
PDF: 7 pages
Proc. SPIE 9371, Photonic and Phononic Properties of Engineered Nanostructures V, 93711T (27 February 2015); doi: 10.1117/12.2077418
Show Author Affiliations
Matthieu Roussey, Univ. of Eastern Finland (Finland)
Petri Stenberg, Univ. of Eastern Finland (Finland)
Arijit Bera, Univ. of Eastern Finland (Finland)
Somnath Paul, Univ. of Eastern Finland (Finland)
Jani Tervo, Univ. of Eastern Finland (Finland)
Markku Kuittinen, Univ. of Eastern Finland (Finland)
Seppo Honkanen, Univ. of Eastern Finland (Finland)

Published in SPIE Proceedings Vol. 9371:
Photonic and Phononic Properties of Engineered Nanostructures V
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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