Numerical Modeling of Nonlinear TE Waves in Multiple-Quantum- Well Waveguides

A computer-aided technique, based on the finite element method, has been developed 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 proce- dure. 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 re- gions on the propagation characteristics can be ignored. The power-dependent behaviour of a non-Kerr-like case is also ex- amined.