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通过理论分析及典型实例计算 ,分析了包层及衬底均为非线性Kerr型介质、芯区为线性均匀介质的三层平板波导的TE0 模出现均匀场分布的条件及其归一化形式 .给出了自聚焦和自散焦情况下对称三层平板波导TE0 模的归一化场分布曲线以及功率随归一化模折射率变化曲线
Through the theoretical analysis and typical example calculation, the uniform field distribution and normalized form of the TE0 mode of a three-layer slab waveguide whose cladding and substrate are both nonlinear Kerr-type medium and whose core region is a linear homogeneous medium are analyzed. The normalized field distribution curve and the normalized mode refractive index change curve of symmetrical three-layer slab waveguide with self-focusing and self-defocusing are given.