抽运光与信号光之间的相位漂移对PSA动态孤子系统传输性能的影响

Effect of Phase-Shift Between Pumping and Signal Light on Transmission Performance of PSA Dynamic-Soliton System

采用计算机系统仿真方法 ,研究抽运光与信号光之间的相位漂移对在线放大器为相敏光放大器的动态孤子传输性能的影响。仿真结果表明 :抽运光与信号光之间的相位漂移将导致孤子脉冲幅度下降。当相位漂移在±π/3 2之间时 ,孤子稳定传输的距离和没有相移时相比差别不大。而当相位漂移超过±π/3 2时 ,经长距离传输后孤子幅度显著下降。相位漂移越大 ,孤子幅度下降越显著。

The effect of phase-shift between pumping and signal li ght on the transmission performance of dynamic-soliton system using phase sens itive amplifier (PSA) as on-line amplifiers is theoretically analyzed by comput er simulation. Simulation results show that the phase-shift between pumping and signal light in PSA results in descending of soliton pulse amplitude. When the phase-shift is within ±π/32, the soliton stable transmission distance has al most the same as the situation of no phase-shift. But when the phase-shift is beyond -π/32 or +π/32, after long distance transmission, the amplitude of th e soliton pulse is descended. The larger the phase-shift, the more significant the amplitude of soliton pulse descended.