| 摘要 |
Disclosed is a optical receiving apparatus including a balanced receiver comprising first and second light receiving elements which receive respective optical signals from first and second ports of a 1-bit delay interferometer, monitor units that monitor amplitudes and delays at the first and second light receiving elements, respectively, control units that variably respectively control attenuations and delays on the paths between the first and second output ports of the 1-bit delay interferometer and the first and second light receiving elements, based on monitored results by the monitor units.
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