Optical functional device, optical receiving apparatus and optical transmission apparatus
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United States of America Patent
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Jan 23, 2018
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Dec 1, 2015
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Dec 3, 2014
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Abstract
An optical functional device includes: a photodetector; a first optical waveguide which is connected to one end face of the photodetector; and a second optical waveguide which is connected to the other end face of the photodetector. The photodetector is formed in a multi-mode interferometer and has electrodes. Light input from the first optical waveguide to the photodetector focuses image at a position physically away from the second optical waveguide, and light input from the second optical waveguide to the photodetector focuses image at a position physically away from the first optical waveguide.
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