CPC H04B 10/61 (2013.01) [H04J 14/02 (2013.01)] | 11 Claims |
1. An optical reception device comprising:
a local light transmission unit configured to generate a plurality of local lights having different wavelengths, select, from among the plurality of generated local lights having different wavelengths, a local light having a wavelength that is closest to the wavelength of a received optical signal, and transmit the selected local light to a coherent receiver;
an optical splitter configured to receive the received optical signal and transmit the received optical signal to the coherent receiver via a first path; and
a wavelength detection unit configured to receive the received optical signal from the optical splitter via a second path, split the received optical signal into different paths according to wavelengths by using a wavelength multiplexer/demultiplexer, and output, to the local light transmission unit, a control signal for causing the local light transmission unit to output a local light having a frequency that corresponds to a path in which the optical signal is included.
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