To obtain accurate normal modes quickly, the frequency dispersion equation was solved by an efficient numerical algorithm.

对于简正波，运用高效数值方法解频散方程，提高了简正波的计算精确和速度。

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Statistical characteristics of polarization mode dispersion (PMD) are investigated with dynamical equation. Simulations are performed in two methods: statistical ensemble and frequency ensemble.

利用动态方程研究了偏振模色散矢量的统计特性，分别用统计系综和频率系综两种方法进行数值模拟。

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