| 摘要 |
The present invention provides a receiver, a transmission system, a method for receiving a polarization multiplexed optical signal, and a non-transitory computer readable medium storing a receiver control program, which are capable of stabilizing reception characteristics in a digital coherent transmission. In a receiver (2), a reception front end (10) receives a polarization-scrambled polarization multiplexed optical signal, polarization-separates the received polarization multiplexed optical signal, and converts each signal into quantized signals. A digital signal processor (14) samples the quantized signals, demodulates the signals by using a polarization separation digital signal processing algorithm, and outputs demodulated signals. When phase and amplitude variations of the demodulated signals are greater than a predetermined value, a control circuit (15) causes the digital signal processor (14) to interrupt processing using the polarization separation digital signal processing algorithm, changes an initial value of a filter coefficient, and then causes the digital signal processor to start the processing using the polarization separation digital signal processing algorithm. |
