Patent ID: 9411098
Filing Date: 2016-08-09
CPC Classification: G02B,G02F,H01S

Claim Text:
1. A polarization reducing apparatus comprising: a separating unit configured to separate input light into components having polarization directions orthogonal to each other; a winding waveguide of silicon formed on a silicon substrate in a winding manner, the winding waveguide transmitting a first component among the components separated by the separating unit; an optical path configured to have a shorter optical path length than the winding waveguide and a lower refractive index than the winding waveguide, the optical path transmitting a second component among the components separated by the separating unit; a combining unit configured to combine the first component and the second component; and an output unit configured to output light including the first component and the second component combined by the combining unit, wherein the optical path is an optical path in which the second component propagates through space.