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本文研究相敏光放大器 (PSA)中泵浦光相位不能完全跟踪信号光相位时 ,即两者之间存在相位漂移时 ,对以 PSA作为光中继放大器的高速光纤通信系统传输性能的影响 .通过计算机系统仿真 ,我们得到在不同的相位漂移下 ,高速信号脉冲眼图劣化度随光纤色散变化的曲线 ,以及不同传输速率下信号眼图劣化度随放大器相位漂移量变化的曲线 .由仿真结果可知 ,如相位漂移控制在一定范围内 ,其对系统性能几乎没有影响 .但超出此范围时 ,则系统性能迅速劣化 .
In this paper, we study the effect of PSAs on the transmission performance of high-speed optical fiber communication system when the phase of the pump light can not completely track the phase of the signal light, that is, when there is a phase shift between them, Computer simulation results show that the degree of deterioration of the high-speed signal pulse eye diagram varies with the dispersion of the optical fiber under different phase shifts, and the curve of the degree of signal eye degradation changes with the phase shift of the amplifier under different transmission rates. If the phase drift is controlled within a certain range, it has almost no effect on the system performance, but beyond this range, the system performance deteriorates rapidly.