多量子阱光波导中非线性TM波的有限元解

FINITE-ELEMENT SOLUTION OF NONLINEAR TM WAVES IN MULTIPLE QUANTUM WELL WAVEGUIDES

本文用有限元法分析了任意非线性介质的多量子阱(MQW)光波导中传输与总光功率有关的TM波性质。用简单的迭代过程得到目洽解。给出了MQW波导具有不同非线性机理时,非线性TM波的色散关系、磁场(Hx)以及二个电场(Ey和Ez)的分布。结果表明:分子取向机理的光波导对非线性TM模存在不同的功率限制作用。

In tensity-dependent Characteristics for TM-polarized optical waves guided by multiple-quantum-well (MQW) waveguides with arbitrary nonlinear media are numerically analyzed by the finite element method. In this approach, Self-consistent solutions are obtained through a simple iterative procedure. The dispersion relations and magnetic-field (Hx) as well as two electric-field (Ey and Ez) profiles for nonlinear TM waves in MQW waveguides with different nonlinear mechanisms are presented. It is shown that, for the waveguides with molecular orientational mechanism, a distinct power limiting action for nonlinear TM modes exists.