| 摘要 |
The present invention relates to a wavelength division multiplexing optical receiver and eliminates excess loss of one polarization component while eliminating the need for a polarization-independent operation of a photodiode. An input waveguide, made of a silicon thin line waveguide, is connected to a looped waveguide equipped with a polarization rotator over a polarization splitter. A ring waveguide equipped with an output waveguide configuring an add-drop ring resonator array is optically connected to the looped waveguide. The output light from ports at both sides of the output waveguide is incident onto first and second receiving surfaces of a photodiode such that the optical distances are equal to each other. |
