摘要
本文提出一种以有限元法为基础的数值方法，用于研究任意非线性介质的多量子阶（ＭＱＷ）光波导中传输与强度有关的ＴＥ波性质．用简单的迭代过程得到自洽解．对于线性或非线性包层区的波导，给出了与功率有关的ＴＥ模的数值结果．结果表明：光的总功率在某一阈值以上时，可以忽略非线性包层区对传播特性的影响．同时，还考查了非克尔型介质与功率有关的行为．
Abstract This paper presents a numerical approach based on the finite element method for analysing intensity-dependent properties of TE waves guided by multiple quantum well (MQW) waveguides with arbitrary nonlinear media. Self-consistent solutions are obtained by a simple iterative procedure. The numerical results for TE power-dependent modes are presented for waveguides with either linear or nonlinear cladding regions. They reveal that, for values of total optical power above a certain threshold, the effect of nonlinear cladding regions on the propagation characteristics can be ignored. The power-dependent behaviour of a lion-Kerr-like case is also examined.
