【摘要】 对多段保偏光纤 (PMF)组成的光纤链路的偏振模色散 (PMD)统计特性进行了数值仿真 ,分析比较了光纤段的长度、段数和级联角度不同的条件下 ,链路的群时延差 (DGD)分布特性 .仿真结果表明 ,在相同的条件下 ,级联的 PMF段数越多 ,仿真得到的 DGD分布就越趋向麦克斯维分布 ;随机变化的物理量越多 ,使 DGD分布趋向于麦克斯维分布所需要的光纤段数就越少更多还原

【Abstract】 This paper simulates statistical characteristic of PMD in polarization maintaining fiber(PMF) link, and compares distribution characteristic of differential group delay(DGD) under different conditions. From our simulating results, we know that under the same conditions, the DGD distribution trends to Maxwell distribution when the number of PMF increases; with the number of variables increasing, less segment of PMF can lead to Maxwell distribution.更多还原