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Proceedings Paper

Guided resonance reflective phase shifters
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Paper Abstract

We present reflective phase shifters based on high contrast gratings resting on a low-index spacer backed by a metallic mirror. The guided resonance of the grating combined with the reflection from the metallic mirror leads to an all-pass filter with 2π phase shift variation and unity reflectivity across the resonance. We present simulations, fabrication and measurement of passive devices fabricated in silicon over gold using a polymer as the spacer layer. Active control at high modulation speeds can be achieved by shifting the guided resonance wavelength using carrier injection or thermo-optic effect in silicon.

Paper Details

Date Published: 27 February 2015
PDF: 6 pages
Proc. SPIE 9372, High Contrast Metastructures IV, 93720W (27 February 2015); doi: 10.1117/12.2077744
Show Author Affiliations
Yu Horie, California Institute of Technology (United States)
Amir Arbabi, California Institute of Technology (United States)
Andrei Faraon, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 9372:
High Contrast Metastructures IV
Connie J. Chang-Hasnain; David Fattal; Fumio Koyama; Weimin Zhou, Editor(s)

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