| 摘要 |
The present invention provides a receiver, a transmission system, a method for receiving a polarization multiplexed light signal, and a non-temporary computer-readable medium storing a receiver control program, in which reception characteristics during digital coherent transmission can be stabilized. In the receiver (2), a polarization multiplexed light signal, which has been polarization-scrambled, is inputted into a reception front end (10), and the reception front end (10) subjects the inputted polarization multiplexed light signal to polarization separation, and converts each of the separated signals into a quantization signal. The digital signal processor (14) samples the quantization signal and demodulates the quantization signal using a polarization separation digital signal processing algorithm, and outputs a demodulated signal. If the fluctuations in the phase and the amplitude of the demodulated signal are greater than a predetermined value, the control circuit (15) stops the processing performed by the digital signal processor (14) using the polarization separation digital signal processing algorithm and changes the initial value of the filter coefficient, and then starts the processing performed using the polarization separation digital signal processing algorithm. |
