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偏振模色散已成为当前发展高速长距离光纤传输系统的主要限制因素。理论上分析了光纤一阶偏振膜色散效应对高速伪随机非归零码 /归零码光信号偏振度的影响 ,并利用数值模拟的方法分析了信号不同输入偏振态以及高阶偏振膜色散效应对非归零码光信号偏振度的影响。最后对利用信号偏振度作为反馈控制信号的自适应偏振膜色散补偿系统的补偿性能进行了分析 ,大量统计分析结果表明对于 10Gbit/s的非归零码光纤传输系统 ,当传输线路的平均偏振膜色散值小于 4 3ps时 ,利用极大化输出信号偏振度的偏振膜色散补偿系统对信号眼图的补偿概率可以达到 99.99%。
Polarization mode dispersion has become a major limiting factor in the current development of high-speed long-haul optical fiber transmission systems. The influence of first-order polarization of optical fiber dispersion on the polarization degree of high-speed pseudo-random non-return / zero-return optical signal is theoretically analyzed. The polarization states of different input signals and dispersion of high-order polarization film are analyzed by numerical simulation Effect on the Degree of Polarization of Non-Return Zero Optical Signal. Finally, the compensation performance of adaptive polarization film dispersion compensation system using signal polarization as the feedback control signal is analyzed. A large number of statistical analysis results show that for the 10Gbit / s non-return-to-zero optical fiber transmission system, when the transmission line average polarization film When the dispersion value is less than 4 3 ps, the compensation probability of the signal eye can be up to 99.99% by using the polarizing film dispersion compensation system which maximizes the polarization degree of the output signal.