在各向同性高非线性光纤中同时考虑光纤损耗和抽运消耗对单抽运四波混频参变过程的影响，得到了导波光之间功率转化关系所满足的椭圆方程，计算结果与OptiSystem软件仿真的结果一致。利用该椭圆方程分析了基于四波混频的全光2R再生器的性能，研究表明，光纤损耗系数的增加不但会劣化再放大性能，还会分别减小和增加高低电平上的输入噪声容限。

The influences of fiber loss and pump depletion on single-pump four-wave mixing (FWM) parametric process in the isotropic and highly-nonlinear optical fiber are considered. The power conversion relation of the guided optical waves is expressed by an elliptic equation, and the calculated results are consistent with the simulation datum obtained by OptiSystem software. The elliptic equation is also used to analyze the performance of all optical 2R regenerators based on FWM. The research shows that the increase of fiber loss coefficient can not only deteriorate the re-amplifying performance, but also lead to the decrease and increase of noise tolerances of input high and low levels, respectively.