三阶色散action下Airy脉冲的反转和紧聚焦
Inversion and tight focusing of Airy pulses under the action of third-order dispersion
摘要：
通过直接模拟和理论分析，研究了截断Airy脉冲在同时具有反常二阶色散和强正三阶色散的光纤中的非线性传输。研究发现，Airy脉冲首先到达由两个色散项的相对强度决定的有限大小的聚焦区，然后经过反转变换，以相反的加速度继续传播。如果三阶色散是一个主导因素，该系统显着特点紧聚焦。这些效应部分地由克尔非线性减少。
英文摘要：
By means of direct simulations and theoretical analysis, we study the nonlinear propagation of truncated Airy pulses in an optical fiber exhibiting both anomalous second-order and strong positive third-order dispersions. It is found that the Airy pulse first reaches a finite-size focal area as determined by the relative strength of the two dispersion terms, and then undergoes an inversion transformation such that it continues to travel with an opposite acceleration. The system notably features tight focusing if the third-order dispersion is a dominant factor. These effects are partially reduced by a Kerr nonlinearity.
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