Patent ID: 9207400
Filing Date: 2015-12-08
Classification: B82Y,G02B

Abstract:
1. A T-shape polarization beam splitter based on photonic crystal waveguides, comprising waveguides formed in a photonic crystal with a complete photonic bandgap, wherein after the incident wave with any polarization direction is inputted into the polarization beam splitter via the input port of the photonic crystal waveguide, TE component is outputted from the TE output port, while the TM component is outputted from TM output port of the beam splitter, wherein sais photonic crystal waveguide is provided with the waveguide-defect dielectric rods, the defect dielectric rods are four square shaped and three circular shaped defect dielectric rods: the four square dielectric defect rods in the waveguide transmitting TE waves, in which the center of each square shaped dielectric rod coincides with the center of circular shaped dielectric rod which was originally deleted in forming the waveguide; the three round dielectric defect rods at the horizontal waveguide for transmitting TM waves, in which the center of each circular shaped dielectric rod coincides with the center of circular shaped dielectric rod which was originally deleted in forming the waveguide.