Patent ID: 8774567
Filing Date: 2014-07-08
Classification: G02B,G02F

Abstract:
1. A polarization multiplexing modulator comprising: a substrate having an electro-optic effect; a first optical modulator and a second optical modulator which are provided on the substrate and which modulate respective lights of same polarization state; a polarization converter which converts a polarization state of an output light from the second optical modulator; and a polarization combiner which polarization combines an output light from the first optical modulator and an output light from the polarization converter, to generate and output a polarization multiplexed light and output it, wherein the polarization converter includes: wherein the polarization converter is configured that the output light from the second optical modulator passes through the polarization separator to be input as is to the mode converter, and the light output from the mode converter is input to the polarization separator; and