利用色散位移光纤（DSF）中四波混频效应在闲频光波长处增益的指数增长特性及增益饱和特性，提出了一种基于恶化信号抽运的2×40 Gb/s的双波长全光3R(再放大、再整形、再定时)再生实验方案。对再生原理做了理论分析和实验验证，完成了1550.92 nm和1557.36 nm两个波长上不同恶化信号的全光再生实验，将恶化信号的接收机灵敏度分别由-20.3 dBm、-20.4 dBm改善到-27.3 dBm、-25.6 dBm，灵敏度改善量为7.0 dB和5.2 dB。系统实验验证了理论分析的结果，对于解决波分复用(WDM)系统中多路信号的同时再生问题提出了一种可行的解决方案。

Using the exponential growth of idler gain and the properties of gain saturation of the four-wave mixing effect in a dispersion-shifted fiber (DSF), a 2×40 Gb/s two-channel all-optical 3R (re-amplification, re-shaping, re-time) regeneration system based on degraded signal pump is proposed. The theoretical analysis and experimental validation of the regenerative principle are conducted, and the regeneration experiment of different degraded signals in two wavelengths of 1550.92 nm and 1557.36 nm is completed. The receiver sensitivity (power penalty) of the degraded signals is improved from -20.3 dBm to -27.3 dBm and from -20.4 dBm to -25.6 dBm. The amount of improvement is 7.0 dB and 5.2 dB. System experimental results verify the theoretical analysis. A viable solution is proposed to solve the problem of simultaneous multi-channel signal regeneration in wavelength division multiplex (WDM) system.