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对非线性前色散补偿系统中的完全补偿、过补偿和欠补偿进行了数值模拟。数值结论表明：采用非线性前补偿不论是完全补偿、过补偿还是欠补偿，当入纤平均功率为1mW至15mW时20Gbit／s、最大半宽度为20ps的RZ脉冲经过100km的标准单模光纤后均能满足误码率小于10－9的要求。当入纤功率较大时，采用完全补偿经过一个放大距离后Q值最大，而且能够传输的放大周期也最多。
The full compensation, overcompensation and undercompensation in the nonlinear pre-dispersion compensation system are numerically simulated. The numerical results show that the RZ pulse with 20 Gbit / s and the maximum half-width of 20 ps when the average fiber power is 1 mW to 15 mW passes through 100 km of standard single-mode fiber after using nonlinear precompensation, whether full compensation, overcompensation or undercompensation Can meet the error rate of less than 10-9 requirements. When the fiber into a larger power, with full compensation after a magnification distance Q maximum, and can transmit the most amplification cycle.