光纤光栅中反射带隙附近的强高斯光脉冲的类孤立波特性

利用变分原理 ,研究了在考虑非线性时 ,频率在反射带隙附近的强高斯光脉冲在光纤光栅中的传输特性。计算表明 ,在假设其高斯形状保持不变的一级近似下 ,光脉冲的脉宽和振幅都不发生变化 (即类似于孤立波特性 ) ,而同时在脉冲中会产生一个随传输距离而变的线性啁啾。

Nonlinear Soliton-like Properties of Strong Gauss-pulse Near the Photonic Band in Fiber Grating

The nonlinear propagation properties of the strong Gauss pulse with the frequency near the photonic band in fiber grating are studied by using the variational principle. The results show that the width and the amplitude of the pulse remain with the propagation distance (likes a soliton) under the first order approximation, but a linear chirp which changes with the propagation distance is produced at the same time.