US Patent 9935426 Optical semiconductor device
Patent 9935426 was granted and assigned to Sumitomo Electric Industries on April, 2018 by the United States Patent and Trademark Office.
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An optical semiconductor device is provided as one achieving reduction of power in phase control. The optical semiconductor device has: a first optical waveguide having a plurality of segments each of which has a diffraction grating region with a diffraction grating and a space portion coupled to the diffraction grating region, having two ends interposed between the diffraction grating regions, and having a constant optical length, wherein at least one of the segments is provided with a phase shift structure; a first phase control device for adjusting a phase of light in each segment with the phase shift structure; and a second phase control device for adjusting a phase of light in each segment without the phase shift structure.
US Patent 09935426 Optical semiconductor device US Patent 9935426 Optical semiconductor device
US Patent 09935426 Optical semiconductor device
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