| 摘要 |
In an optical communication system formed by terminal stations, optical repeaters provided between terminal stations, and optical fiber cables connecting between terminal stations through optical repeaters, the system includes: an optical wavelength multiplexer provided in a terminal station to multiplex a first optical signal having a wavelength lambda 1 with a second optical signal having a wavelength lambda 2; an optical wavelength demultiplexer provided in the terminal station to demultiplex the first optical signal from the second optical signal; plural optical repeaters, each having a unit for amplifying the first and second optical signals in accordance with a level of the second optical signal separated from the first optical signal.
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