ABSTRACT We report on numerical analysis of the dynamic propagation of finite-energy Airy pulses (FEAPs) in photonic crystal fibre (PCF) at 835 nm wavelength. We focus on the influence of self-phase modulation (SPM), intrapulse Raman scattering (IRS), as well as self-steepening (SS) on the dynamic propagation of FEAPs under three circumstances, i.e. SPM alone affected, and the combined effect of the first two or all three mentioned above. Furthermore, the influence of the truncation coefficient and initial frequency chirp is discussed in detail. Our results demonstrate that the FEAP can slow down gradually with the increase of the peak power during propagation, while higher-order nonlinear effects, such as IRS and SS, are beneficial for widening and flatting the supercontinuum (SC); the SC becomes wider with decreasing the truncation coefficient; compared to negative initial chirp, positive initial chirp can enhance SC generation, i.e. leading to a broader SC.

中文翻译：

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有限能量艾里脉冲在光子晶体光纤中动态传播的数值研究

摘要 我们报告了有限能量艾里脉冲 (FEAP) 在 835 nm 波长下光子晶体光纤 (PCF) 中动态传播的数值分析。我们重点研究了自相位调制 (SPM)、脉冲内拉曼散射 (IRS) 以及自陡峭 (SS) 在三种情况下对 FEAP 动态传播的影响，即 SPM 单独受到影响，以及上面提到的前两个或所有三个。此外，还详细讨论了截断系数和初始频率啁啾的影响。我们的研究结果表明，FEAP 可以随着传播过程中峰值功率的增加而逐渐减慢，而高阶非线性效应，如 IRS 和 SS，有利于加宽和平坦化超连续谱（SC）；SC随着截断系数的减小而变宽；