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基于速率方程的离散算法,分析了双包层Er3+/Yb3+光纤放大器增益动态的特性。研究了功率漂移与撤除信道数的关系及不同控制方式的控制效果。结果表明:信道撤除数量越多,放大器达到稳态的时间越长,功率漂移越大;泵浦控制方式下,泵浦功率的调整随撤除信道数的增加而增大,且抑制功率漂移的时间也随之增长;反馈控制方式下,功率漂移首先呈现振荡结构,抑制功率漂移的时间较短。
Based on the discrete algorithm of rate equation, the dynamic characteristics of gain of double-clad Er3 + / Yb3 + fiber amplifier are analyzed. The relationship between power drift and the number of channels to be removed and the control effects of different control modes are studied. The results show that the more the channel is removed, the longer the amplifier reaches the steady state and the larger the power drift. Under the pump control mode, the pump power is adjusted with the increase of the number of channels to be removed and the power drift time But also increases. Under the feedback control mode, the power drift first presents the oscillating structure, and the time for suppressing the power drift is short.