Silicon-based, broadband, waveguide-integrated electro-optical switch
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United States of America Patent
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Dec 27, 2016
Grant Date -
Aug 20, 2015
app pub date -
Oct 30, 2014
filing date -
Feb 18, 2014
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Abstract
An electro-optical switch or router includes a semiconductor oxide substrate and first, second, and third semiconductor waveguides disposed on the semiconductor oxide substrate. The third waveguide includes a transparent conducting oxide layer, an oxide layer, a metal layer, and first and second electrodes coupled to the third waveguide. The electrodes are configured to bias and unbiased the third waveguide to effect optical switching in the electro-optical switch. The oxide layer is disposed between the transparent conducting oxide layer and the metal layer. The switch may further include a semiconductor layer disposed under the transparent conducting oxide layer between the transparent conducting oxide layer and the semiconductor oxide substrate. The first electrode may be coupled to the transparent conducting oxide layer, and the second electrode may be coupled to the metal layer.
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