Directional semiconductor waveguide coupler
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United States of America Patent
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Dec 27, 2016
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app pub date -
Mar 9, 2015
filing date -
Mar 7, 2014
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Abstract
An optical, directional coupler has a first input, a second input, a first output, and a second output. The coupler is made with a shoulder disposed on a substrate and a first ridge and a second ridge disposed on the shoulder. The first ridge extends from the first input to the first output. The second ridge extends from the second input to the second output. The shoulder, the first ridge, and the second ridge taper to provide coupling and are modified to select a coupling ratio.
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