In this paper, we give the diagrams with XPM and without PMD.It can be seen that the XPM reduced the eyeopening to some extent, resulting in weakening the performance of first order compensation.

• 文中给出了采用补偿后考虑XPM以及不考虑XPM时信道的眼图，可以看出XPM在一定程度上降低了眼图的张开度，削弱了一阶PMD补偿效果。