Silicon-based rib-waveguide modulator and fabrication method thereof
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United States of America Patent
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Aug 30, 2016
Grant Date -
Dec 31, 2015
app pub date -
Jun 30, 2015
filing date -
Jun 30, 2014
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Abstract
Various structures of an electro-optic device and fabrication methods thereof are described. A fabrication method is provided to fabricate an electro-optic device which may include a silicon-based rib-waveguide modulator which includes a first top silicon layer, having a first doped region that is at least partially doped with dopants of a first conducting type, a second top silicon layer, having a second doped region that is at least partially doped with dopants of a second conducting type, and a thin dielectric gate layer disposed between the first top silicon layer and the second top silicon layer. The second doped region may be at least in part directly over the first doped region. The modulator may also include a rib waveguide formed on the second top silicon layer, a first electric contact formed on the first top silicon layer, and a second electric contact formed on the second top silicon layer.
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