文章通过仿真得到了非归零(NRZ)码、载波归零(CSRZ)码、NRZ-差分相移键控(DPSK)和CSRZ-DPSK信号在偏振模色散(PMD)补偿前后的偏振度(DOP)值和剩余差分群时延(DGD)值。结果表明, 与二进制强度调制(OOK)格式相比, DPSK补偿后的DOP值更多地分布在接近1的范围, 剩余DGD值也较小, 其中CSRZ-DPSK补偿效果最好, 是实现PMD缓解与补偿动态结合的首选调制格式。

By simulation, we obtain the Degree Of Polarization (DOP) value and the residual Differential Group Delay (DGD) value before and after ther Polarization Mode Dispersion (PMD) compensation of Non-Return-to-Zero (NRZ) code, Carrier-Suppressed Return-to-Zero (CSRZ) code, NRZ-DPSK and CSRZ-DPSK signals. The results show that compared with the binary On-Off-Key (OOK) format, more DOP values after the DPSK compensation are distributed close to 1 and the residual DGD values are smaller. In addition, CSRZ-DPSK has the best effect of PMD compensation and is the preferred modulation format for the dynamic integration of PMD mitigation and compensation.