结果表明用传递函数方法处理折射率渐变分布的光波导问题，计算相对简单，可以得到精确的数值结果。

The results show that it is a relatively simple and exact method for using transfer function method to deal with the optical waveguides with graded refractive index profile.

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该方法通过引入区域内节点间距函数，人为给定某一定值或渐变数值可在任一局部水域进行网格加密。

By introducing regional node spacing function, which given a numerical value or varied grade of cell, the mesh could control the changes of element size.

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研究了在渐变折射率介质中构成标准矢量波函数的必要条件。

The necessary conditions for construction of normal vector wave functions in inhomogeneous media with graded refractive index are studied.

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