Patent ID: 8483573
Filing Date: 2013-07-09
Classification: H04B,H04J

Abstract:
1. An optical transmission and reception system comprising: an optical transmitter that transmits an optical signal; and an optical receiver that receives the optical signal through an optical fiber, wherein the optical transmitter includes: an optical transmission part that generates the optical signal; and a polarization scrambling part that brings the optical signal into polarization scrambling state; and wherein the optical receiver includes: a polarization dependent photoelectric detection part that converts the optical signal received through the optical fiber into an electric signal; and a digital signal processing part having a polarization scramble canceling part that cancels the polarization scrambling state using a digital signal processing operation by calculating an inverse matrix of a matrix of Jones Matrix representing the polarization scrambling state at the polarization scrambling part based on a polarization scrambling frequency at the polarization scrambling part and a pattern of a variation over time of the polarization scrambling state of the polarization scrambling part, and multiplying the electric signal converted by the polarization dependent photoelectric detecting part by the inverse matrix.