克尔型非线性薄膜波导的TE模

TE Modes in a Planar Waveguide with Kerr Type Nonlinear Film

对于芯区为克尔型非线性介质、覆盖层和衬底为线性介质的平板波导，用Ｋｒｙｌｏｖ－Ｂｏ－ｇｏｌｉｕｂｏｖ－Ｍｉｔｒｏｐｏｌｓｋｙ的渐近法导出了色散方程及场分布的二阶近似数学表达式，使计算量大为减少且结果精确。给出了对称和非对称情况的典型实例。

For planar waveguide with Kerr type nonlinear film and linear substrate and cladding, the propagation characteristics of TE modes are analysed by KBM method in perturbation theory. The dispersion equation and modal field function are given by second order approximate formulas. The computation is greatly reduced and the results are exact. Typical examples for symmetric and asymmetric nonlinear waveguides are given.