周期性折射率变化的非线性平面光波导的空间光孤子传输

Spatial Solitons in Multichannel Planar Waveguide System

本文考虑在横向具有正弦形周期折射率调制的非线性平面光波导 ,它构成一个平行的多信道系统。通过数值方法直接求解非线性薛定格方程以及变分法近似求出了束缚于一个“凹槽”中的单个空间光孤子解 ,这种光孤子的存在没有阈值范围 。

We consider a model of a nonlinear planar waveguide with a sinusoidal modulation of the refractive index in the transverse direction,which gives rise to a system of parallel troughs that may serve as channels that trap solitary beams (spatial solitons).By means of the variational approximation and direct simulations we demonstrate the one-soliton state trapped in a channel has no existence threshold and is always stable.