Patent ID: 7280713
Filing Date: 2007-10-09
Classification: G02B,G02F

Abstract:
1. An optical waveguide device, comprising: a substrate having an electro-optical effect; a polarization wave separating waveguide formed on said substrate for separating propagation light into polarization waves of polarization modes of TM and TE; two linear waveguides formed on said substrate for individually propagating the propagation lights separated by said polarization wave separating waveguide; and a polarization wave synthesis waveguide formed on said substrate for synthesizing the propagation lights from said two linear waveguides; said polarization wave separating waveguide including two input waveguides, a waveguide coupling element for coupling said two input waveguides with a distance d the distance d width w the length of said waveguide coupling element being set so that, where polarization waves of the two polarization modes of TM and TE are inputted from one of said two input waveguides, the polarization waves may individually be outputted to different ones of said output waveguides from each other.