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考虑在ＦＳＫ（频移键控）调制方式下平衡混频式相干光偏振分集接收技术的研究，包括这种接收方式的理论模型分析、体型偏振分束器的研制、测试及初步的接收实验。结果表明：研制的偏振分束器已接近国际先进水平，所采用的接收方法是可行的，为整个相干光通信系统的研制奠定了坚实的基础。
Consider the research of polarization balanced reception of balanced coherent light under FSK (Frequency Shift Keying) modulation mode, including theoretical model analysis of this receiving mode, development and test of body type polarization beam splitter and preliminary receiving experiment. The results show that the developed polarization beam splitter is close to the international advanced level. The receiving method is feasible and lays a solid foundation for the development of the whole coherent optical communication system.