Integrated optical device for polarization demultiplexing, has photonic crystal for splitting incoming light into mutually orthogonal components

摘要

The integrated optical device includes an input coupler (20) for receiving and inputting an incoming light signal from a waveguide into the device. A polarization demultiplexer comprising a photonic crystal, splits the incoming light signal into two components of mutually orthogonal polarization. At least one output coupler is provided for outputting at least one of the polarized signals into a waveguide. An Independent claim is included for a polarization demultiplexer.