【摘要】 提出一种基于反WKB法与分段线性插值的最小二乘拟合方法(即预测-校验方法)来确定离子交换玻璃波导的横向折射率分布,它将反WKB法与分段线性插值所计算出的结果作为近似值(预测),然后进行最小二乘拟合(校验),并与基于反WKB的分段线性插值方法进行比较。数值计算表明,这一算法能有效地重建渐变离子交换平面波导的横向折射率分布。更多还原

【Abstract】 A novel least squares algorithm based on anti-WKB method and linear segment interpolation,which is called prediction-verification method, is proposed.This method takes the values calculated by anti-WKB and linear segment interpolation as approximation(prediction),then uses the least squares fitting (verification),and after that compares the linear segment interpolation based on the anti-WKB method with it. Numerical results show that the prediction-verification algorithm can effectively reconstruct the transverse refractive index profile of graded ion-exchange planar waveguide.更多还原