以变系数耦合高阶非线性薛定谔方程为理论模型,采用分步傅里叶方法研究了有初始啁啾的艾里脉冲和光孤子在非均匀光纤的反常色散区传输时艾里脉冲的演化特性。结果表明: 正负啁啾条件下艾里脉冲都会产生俘获孤子。当初始啁啾为正时, 产生传播方向与原加速方向相反的艾里脉冲; 当初始啁啾为负时, 艾里脉冲会沿与加速方向相反的方向发生色散。研究了不同截断系数和非线性条件下正啁啾艾里脉冲的传输演化特性。

Based on the coupled higher-order nonlinear Schrdinger equation with varying coefficient, evolution characteristics of optical soliton and Airy pulse with initial chirp transmitting in the anomalous dispersion region of the inhomogeneous optical fiber are studied by the split-step Fourier method. The results indicate that the Airy pulse can produce trapped solitons in positive and negative chirp conditions. When the initial chirp is positive, a new Airy pulse whose propagation direction is opposite to the original acceleration direction is generated. When the initial chirp is negative, the Airy pulse is dispersed in the direction opposite to the accelerating direction. The transmission characteristics of the Airy pulse with initial positive chirp are investigated under different truncation coefficients and nonlinear conditions.