Patent ID: 8503882

Claim:
An optical receiver configured to receive an input light, the input light is wavelength multiplexed in a plurality of first signal lights and a plurality of second signal lights, the plurality of first signal lights are in a first wavelength band and the plurality of second signal lights are in a second wavelength band, the optical receiver comprising: a splitter configured to branch the input light, into a plurality of branch lights; a plurality of tunable dispersion compensators, each of the plurality of tunable dispersion compensators respectively configured to receive one of the plurality of the branch lights and configured to perform chromatic dispersion compensation; a plurality of optical reception sections, each of the plurality of optical reception sections respectively configured to receive the output light from each of tunable dispersion compensator; and a controller configured to control the tunable dispersion compensators so that a dispersion compensation range in the tunable dispersion compensator changes by a shift amount corresponding to a relation between the wavelength of the signal light being input to the optical reception section and the first wavelength band.