光子晶体光纤中脉冲阶数与初始啁啾对超高斯脉冲传输的影响

摘要

In this paper, the transmission of super gaussian pulse in photonic crystal fiber has been simulated by FFT, and it has been mainly analyzed that the influence of Order and initial chirp which the super Gaussian pulse on its transmission. The results show that the splitting of output pulse waveform and the broadening of its spectrum have occurred with increasing of super Gaussian pulse' order. If initial chirp is positive, the splitting and broadening is increasing. However, if it is negative, the output waveform is better, and the output spectrum becomes narrow.%采用分步傅里叶法数值模拟了超高斯脉冲在光子晶体光纤中的传输过程,着重分析了超高斯脉冲的脉冲阶数及所带初始啁啾对信号传输的影响.结果表明:随超高斯脉冲阶数增大,脉冲输出波形出现分裂,频谱加宽.若初始啁啾为正,则会使波形振荡分裂加剧,频谱进一步加宽；而若初始啁啾为负,则输出波形无分裂,输出频谱变窄.