摘要
采用一种简化的线路传输模型 ,详细讨论了在高速光纤通信系统中 ,线路偏振模色散 (PMD) ,尤其是二阶PMD、输入信号偏振态等对信号偏振度 (DOP)的影响 ,并指出以信号DOP做反馈控制信号适合于一阶PMD优化补偿系统 ,但在较大二阶PMD的影响下 ,将增加控制算法的复杂性 ,使系统可能陷入局部最优解 .
Using a compact optical link transmission model, the degradation of signal degree of polarization (DOP) induced by polarization mode dispersion (PMD), especially the second-order PMD, and the input signal state of polarization in high-speed optical fibre communication systems is studied in detail. It is pointed out that the signal DOP can be used as the feedback control signal in the optical adaptive first-order PMD optimal compensation systems compatibly. However, if the second-order PMD is considered, the control algorithm will be complicated, and there will be the possibility that the system is trapped in a local optimum which would downgrade compensator the performance.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第11期2818-2824,共7页
Acta Physica Sinica
基金
国家高技术研究发展计划 (批准号 :2 0 0 1AA12 0 2 0 4)资助的课题~~
