| 摘要 |
The present invention is an optical communication system including a plurality of optical transmission systems each includes a transmission processing unit and a receiving processing unit, wherein the transmission processing unit includes an optical transmission unit (2a, 2b) that converts a plurality of electric signals into optical signals, and generates optical signals, an auxiliary optical transmission unit (4a, 4b) that converts a part of the electric signals into an optical signal, generates an optical signal having a wavelength other than wavelengths of the optical signals generated by the optical transmission unit (2a, 2b), and outputs the generated optical signal to a different transmission processing unit, and a wavelength multiplexing unit (3a, 3b) that multiplexes the optical signals and outputs an optical signal in a multiplexed state to an optical-fiber transmission line, and the receiving processing unit includes a wavelength demultiplexing unit (6a, 6b) that demultiplexes the optical signal in a multiplexed state into optical signals at the respective wavelengths, an optical receiving unit (7a, 7b) that converts the optical signals having the wavelengths of the optical signals generated by the optical transmission unit (2a, 2b) among the demultiplexed optical signals into electric signals, respectively, and an auxiliary optical receiving unit (8a, 8b) that converts the optical signal having the wavelength of the optical signal generated by the auxiliary optical transmission unit (4a, 4b) among the demultiplexed optical signals into an electric signal. |
