【摘要】 分析了偏振模色散的起源，讨论了现在已经出现的两种偏振模色散定义的理论———偏振主态理论和时域模型及其测量方法，并对它们做了分析比较，指出了它们之间的一致关系，最后做了定量的计算更多还原

【Abstract】 The origin of polarization mode despersion, its definitions come from two existing theories based on principal polarization state and time domain model, and the measurement methods are reviewed. Their compatible relationship is compared and expounded, and a discusion in quantity estimation is made.更多还原