| 摘要 |
A polarization beam splitter includes a demultiplexer, a multiplexer, a first waveguide at least partially formed of a rib waveguide, and a second arm waveguide at least partially formed of a channel waveguide. Waveguide widths of the first and second waveguides are configured to cause, with respect to a linear polarization component of an input light of the polarization beam splitter, 1) a first refractive index of the first arm waveguide and a second refractive index of the second arm waveguide to be the same, and 2) changes of the first and second refractive indexes, due to changes of the respective waveguide widths, to be the same. |
