摘要
该文首先从理论上导出了保偏光纤的偏振模色散矢量表达式,此表达式是由保偏光纤参数决定的。应用此矢量表达式推导出能够同时补偿一阶和二阶偏振模色散的矢量表达式,进一步提出使用三段保偏光纤的二阶偏振模色散补偿方案,通过调整第一段保偏光纤的长度和三段保偏光纤之间的耦合角度,即可实现二阶偏振模色散的补偿。最后数值模拟了该补偿方案的控制算法,这些结果表明该方案控制算法简单,能有效地对二阶偏振模色散进行补偿,降低了误码率,提高了通信系统性能。
The paper derives the expression of polarization mode dispersion （PMD） vector of polarization maintenance fiber （PMF） , which is determined by the parameters of the PMF. Then a vector expression which can compensate the first - and second - order PMD at the same time is derived by using the PMD vector of PMF. Based on which, we propose a second - order PMD compensation scheme which uses three stage PMFs. By adjusting the length of the first PMF and the coupling angle among the PMFs, we can carry out the second - order PMF compensation. At last, the controller algorithm of the compensation scheme is simulated. The results show that the controller algorithm is simple, and the scheme can compensate second - order PMD effectively, reduce the bit error rate, and advance the communications system performance.
出处
《计算机仿真》
CSCD
2005年第8期125-127,131,共4页
Computer Simulation
关键词
光纤通信
偏振模色散矢量
高价偏振模色散补偿
保偏光纤
Fiber optical communication
PMD vector
High - order PMD compensation
Polarization maintenance fiber
