A polarization independent frequency shift keying(FSK)heterodyne balanced re-ceiver is considered,including the model of this receiver,fabrication and the test of the bulk po-larization beamspiltter,and the preliminary experiment.

• 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。