将数值条形传递函数方法引入了对光波导的计算.该方法将问题域划分为若干条形单元,然后建立离散模型,利用变分原理得到系统的控制方程,最后通过分布参数系统的数值传递函数方法对控制方程求解 The method of numerical bar transfer function is introduced into the calculation of the optical waveguide. The method divides the problem domain into several bar elements, and then establishes the discrete model. The governing equations of the system are obtained by variational principle. Finally, Function Method Solves Control Equation