OPTICAL COMMUNICATIONS SYSTEM, OPTICAL TRANSMISSION DEVICE, OPTICAL RECEPTION DEVICE, OPTICAL COMMUNICATIONS METHOD, OPTICAL TRANSMISSION METHOD, PHASE ROTATION SETTING DEVICE, AND OPTICAL RECEPTION METHOD

摘要

An optical signal generation unit (110) generates optical signals for transmission by modulating carrier waves on the basis of signals to be transmitted. A filter processing unit (120) adds to the signal for transmission, for each carrier wave frequency, a phase rotation of a size that is the square of the carrier wave deviation for the relevant frequency multiplied by the same constant (i.e., a size proportional to the deviation). An optical reception device (20) has a compensation unit (210). The compensation unit (210) compensates said phase rotation, for the signal generated from the optical signal for transmission.