Theoretical analysis of a novel polarization-insensitive AWG demultiplexer based on Si nanowire and slot waveguides

摘要

new design for polarization-insensitive silicon-on-insulator (SOI) arrayed waveguide grating (AWG) is proposed. In arrayed waveguide region, Si nanowire waveguides and slot waveguides are combined to adjust the optical path differences. For the slot waveguides, the refractive indices of the TE and TM polarizations satisfy nTM>nTE while in the Si nanowire waveguides nTM