泵浦光和信号光之间的相位漂移对级联PSA光传输系统传输性能影响的研究

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.

THE EFFECT OF PHASE-SHIFTING BETWEEN PUMPING AND SIGNAL LIGHT ON TRANSMISSION PERFORMANCE OF OPTICAL FIBER COMMUNICATION SYSTEM WITH IN-LINE PSA

The effect of phase-shifting between pumping and signal light in optical phase-sensitive amplifier(PSA) on dispersion compensation for optical fiber communication system using PSA’s as inline amplifiers is theoretically analyzed.By computer simulation,it is got that eye-patten degradation of high-speed signal increases rapidly with the accretion of fiber dispersion at differentphase shift and also increases with phase shifting increase.From our simulating results,one knows that phase shift won’t affect the system performance if it is control in a certain range,but as the phase shifting increased beyond this range,the performance of system is degraded rapidly.