| 摘要 |
Optical transmission equipment includes: a first optical amplifier (22) configured to amplify an input optical signal; a second optical amplifier (23) provided at an output side of the first optical amplifier; an optical module (30) having a first relay port (31x) configured to receive an optical signal from the first optical amplifier, a second relay port (31y) configured to output an optical signal to the second optical amplifier, an optical device (33) provided between the first relay port and the second relay port, and a first output port (32) optically couplable to the optical device; and a second output port (26T) configured to output the optical signal amplified by the second optical amplifier.
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