| 摘要 |
PROBLEM TO BE SOLVED: To facilitate high capacity, high speed transmission by enhancing receiving sensitivity thereby improving transmission quality, and to enhance safety by preventing optical signal interruption upon occurrence of optical network fault.SOLUTION: An optical transmission system includes an optical signal transmitter which branches the same optical signal and delivers it to a plurality of optical transmission lines, and an optical signal receiver for detecting the same optical signal transmitted via the plurality of optical transmission lines, equalizing the waveform thereof, compounding the signals by synchronizing the timing, and then demodulating the optical signal. Furthermore, the optical signal receiver is configured to compound the optical signals transmitted via the plurality of optical transmission lines, or the signals after detection excepting those having an average power equal to or lower than a threshold. |
