线性源啁啾对孤子脉冲压缩的影响

Effect of Initial Linear Chirp on Soliton Pulse Compression in Optical Fibers

通过线性源啁啾对孤子脉冲压缩影响的研究 ,发现泵浦脉冲和孤子脉冲的源啁啾参量都对脉冲压缩产生重要影响 ,且孤子脉冲压缩存在最佳光纤长度。在泵浦功率一定的条件下 ,选取负啁啾的泵浦脉冲或正啁啾的孤子脉冲可以获得高压缩因子的光脉冲 ;

The effect of the initial linear chirp on the nonlinear propagation of two pulses in single mode fibers is studied by using split step Fourier method.It is found that both the chirped pump pulse and the chirped soliton pulse have a great effect on the soliton pulse compression in anomalous dispersion regime.It is also found that the fundamental soliton pulse can be compressed due to cross phase modulation and an optimum fiber length existing in the compression.The simulation results show that the optimum fiber length becomes shorter with a stronger pump pulse when the chirp is fixed.For a specific pump power, selecting negative chirped pump pulse or positive chirped soliton pulse can obtain short compressed pulse.Simultaneously,selecting negative chirped pump pulse and positive chirped soliton pulse will obtain shorter compressed pulse.