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Opt Lett. 2011 Aug 1;36(15):3012-4. doi: 10.1364/OL.36.003012.

Suspended bridge-like silica 2×2 beam splitter on silicon.

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1
Mork Family Department of Chemical Engineering and Materials Science, University of Southern California, Los Angeles, California 90089, USA.

Abstract

We report a successful experimental realization of a 2×2 suspended silica splitter integrated on a silicon substrate. The silica splitter was photo-lithographically patterned, etched, and reflowed to form the suspended and rounded silica waveguide channels. The silica splitter showed a flat splitting ratio and excess loss over a wide wavelength range from 1520 to 1630 nm with a low crosstalk. Additionally, as a result of the very low nonlinear coefficients of silica, the splitting ratio is independent of input power.

PMID:
21808389
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