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本文讨论了相干光纤通信系统中的偏振分集接收机的基本原理,并在实验中首次实现了基于偏振分集的偏振不敏感接收。在调制信号为137.2MHz和146.0MHz正弦波的情况下,得到了很好的与信号偏振面无关的解调信号。这一结果正在应用于1.5μm波段140Mb/s FSK相干光纤通信系统之中。
In this paper, the basic principle of polarization diversity receiver in coherent optical fiber communication system is discussed. Polarization-insensitive polarization-insensitive receiver is first realized in the experiment. In the case of modulated signals of 137.2 MHz and 146.0 MHz, good demodulation of the signal plane is obtained. This result is being applied to the 1.5-m band 140Mb / s FSK coherent optical fiber communication system.