飞秒孤子作为未来大容量、大数据光纤通信的载流已经成为了当前重要研究方向,建立了标准单模光纤存在噪声时的波解体和孤子形成模型.分析结果表明:对于长于200 ps的脉冲,即使是低噪声功率,波解体调制不稳定性机制会导致噪声放大;当脉冲短于20 ps,波解体实现大量孤子是由于脉冲崩溃和脉冲谱展宽,而在它们之间的脉冲时波解体实现大量孤子主要是由于脉冲崩溃.脉冲调制的结果对于克服光纤损耗及非线性有一定的理论和实际意义.%The femtosecond soliton for future large capacity and large data of optical fiber communication has become an important research direction,this paper established a soliton formation model when the standard single-mode fiber has wave collapse under noise environment.Analyzing results show that for pulses which is more than 200 ps,wave modulation instability mechanism can lead to disintegration of noise amplification even low noise power.When the pulse is shorter than 20 ps,a large number of soliton wave disintegrations appear due to the collapse of the pulse and pulse spectrum broadening.Between them the pulse wave collapse is mainly due to a lot of soliton pulses.The results of the pulse modulation have certain theoretical and practical significance to overcome fiber loss and nonlinearity.
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