摘要
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.
出处
《光通信研究》
北大核心
2009年第2期1-2,9,共3页
Study on Optical Communications
基金
国家自然科学基金资助项目(60577046)
山东省科技攻关项目(2006GG2201002)
