SYSTÈME DE TRANSPORT OPTIQUE, DISPOSITIF ÉMETTEUR OPTIQUE ET DISPOSITIF RÉCEPTEUR OPTIQUE

摘要

In an optical transfer system according to the present invention, an optical transmission unit 100 generates an optical signal in which respective polarization components are alternately present on a time axis, a time period during which the respective polarization components are simultaneously present on the time axis is substantially zero, and a symbol repetition cycle of optical signals of the respective polarization components becomes Ts, an optical reception unit 300 causes an interference between local oscillation light and a received optical signal and converts an interfered optical signal to an electric signal, and a received electric-signal processing unit 400 performs analog-digital conversion of an electric signal, elimination of a delay difference of Ts/2 between the respective polarized signal components, and adaptive equalization of a distortion other than the delay difference.