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在利用光纤脉冲堆积器进行脉冲时间整形时,存在如何确定光纤脉冲堆积器各路的延时、衰减等参数以产生所需脉冲波形的问题。为此分非相干脉冲堆积和部分相干脉冲堆积两种情况,定量分析了堆积脉冲的特性。在此基础上,提出了一种逆算方法,使得在任意给定时间波形情况下,均可以通过该逆算方法,简单而准确地计算出光纤脉冲堆积器参数。研究结果表明,非相干堆积而成的脉冲波形较为平滑,而部分相干堆积而成的脉冲波形则存在一定的调制;按逆算结果堆积而成的脉冲波形与给定波形符合很好。
There is a problem of how to determine the parameters such as the delay and attenuation of each path of the optical fiber pulse stacker to generate the desired pulse waveform when pulse shaping is performed by using the optical fiber pulse stacker. For this reason, two cases of non-coherent pulse accumulation and partial coherent pulse accumulation were analyzed quantitatively to analyze the characteristics of stacked pulses. On this basis, an inverse calculation method is proposed, which makes it easy and accurate to calculate the parameters of the optical fiber pulse stacker through the inverse calculation method under any given time waveform. The results show that the pulse waveform formed by non-coherent accumulation is relatively smooth and the pulse waveform formed by partially coherent accumulation has some modulation. The pulse waveform accumulated by inverse calculation is in good agreement with the given waveform.