Input waveguide grating couplers designed for a desired wavelength and polarization response

摘要: Input grating couplers are used to couple light from free space into a waveguide and can provide additional functions such as focusing beam splitting of the arbitrary desired positions in waveguide. We show that it is possible design so they perform different depending on polarization or wavelength incident light. demonstrate experimentally number may be interest, e.g., optical fiber communications. Examples polarization-independent couplers, designed have same response for two orthogonal polarizations light, demultiplexing division multiplexing applications, separate focus input wavelengths