同向抽运喇曼放大器功率转换效率的数值分析

摘要

In order to analyze power conversion efficiency of forward pumped fibre Raman amplifier (FRA), the effect of each parameter on forward pumped FRA ' s power conversion efficiency was investigated based on the Runge-Kutta method and coupling equations .The results show that power conversion efficiency will increase with the increase of fibre length until it reaches the maximum and remains the stability .Power conversion efficiency will increase with the increase of initial signal power , Raman gain coefficient or signal fibre loss , and will decrease with the increase of fibre efficient area , pump fiber loss or frequency ratio of pump light and signal light .The relation between power conversion efficiency and initial pump power is parabolic .The study is helpful for FRA .%为了对同向抽运光纤喇曼放大器的功率转换效率进行研究,由耦合方程出发,采用龙格-库塔算法的数值模拟方法,详细分析了所有物理因素对同向抽运光纤喇曼放大器功率转换效率的影响. 结果表明,功率转换效率先随着光纤长度的增加而增加,当增加到最大值时保持数值不变;并且功率转换效率也随着初始信号光功率、光纤喇曼增益系数、信号光损耗系数的增加而增加,但随着光纤有效面积、抽运光损耗系数、抽运光与信号光的频率比的增加而减小;功率转换效率和初始抽运光功率呈抛物线曲线关系. 这对同向抽运光纤喇曼放大器功率转换效率的进一步研究以及光纤喇曼放大器的相关研究有一定参考意义.