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Proceedings Paper

Novel high efficiency vertical to in-plane optical coupler
Author(s): Li Zhu; Vadim Karagodsky; Connie Chang-Hasnain
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Paper Abstract

We propose a novel vertical optical coupler using subwavelength high contrast grating. The surface normal incidence light can be coupled into the in-plane waveguide with peak efficiency of 92% over a broad wavelength range. Such structure can be also designed as the in-plane reflector or in-plane to vertical coupler. The reflectivity for waveguide propagation mode is 97.5% and the coupling efficiency is 96%, respectively.

Paper Details

Date Published: 23 February 2012
PDF: 11 pages
Proc. SPIE 8270, High Contrast Metastructures, 82700L (23 February 2012); doi: 10.1117/12.909414
Show Author Affiliations
Li Zhu, Univ. of California, Berkeley (United States)
Vadim Karagodsky, Univ. of California, Berkeley (United States)
Connie Chang-Hasnain, Univ. of California, Berkeley (United States)

Published in SPIE Proceedings Vol. 8270:
High Contrast Metastructures
Connie J. Chang-Hasnain; Fumio Koyama; Alan Eli Willner; Weimin Zhou, Editor(s)

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