Patent ID: 8270843

Claim:
An optical transmission system for transmitting a wavelength division-multiplexed optical signal, the system comprising: a transmitting station including: a first storage to store a plurality of sets of transmitting-side distortion compensation coefficients which have respectively been calculated with a plurality of different compensation ratios each representing a ratio of length between first and second sections of transmission path of the optical signal, a first processor that is operative to select one of the sets of transmitting-side distortion compensation coefficients and perform distortion compensation on the optical signal based on the selected set of transmitting-side distortion compensation coefficients for the first section of the transmission path, and a transmitter to output, to the transmission path, the optical signal on which the distortion compensation has been performed by the first processor; and a receiving station including: a receiver to receive the optical signal from the transmission path, a second storage to store a plurality of sets of receiving-side distortion compensation coefficients which have respectively been calculated with the plurality of different compensation ratios, and a second processor that is operative to select one of the sets of receiving-side distortion compensation coefficients and perform distortion compensation on the optical signal received by the receiver, based on the selected set of receiving-side distortion compensation coefficients for the second section of the transmission path.