Radial optical coupler
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United States of America Patent
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Oct 20, 2015
Grant Date -
Sep 6, 2012
app pub date -
Mar 5, 2011
filing date -
Mar 5, 2011
priority date (Note) -
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Abstract
An optical device includes an optical grating coupler and a plurality of optical waveguides coupled thereto. The optical grating coupler is formed along a planar surface of a substrate, and includes a pattern formed by ridges concentrically located on the surface about a center thereon. Each adjacent pair of ridges is separated by a groove. Each waveguide of the plurality of waveguides is oriented about radially with respect to the center, and has a first end that terminates near an outermost one of the ridges. The first ends are about uniformly spaced along the outermost one of the ridges.
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