Four effective methods on measuring refractive index of wave guide film are given. All of the methods are studied, especially, an experiment is done by the prism coupling method.
本文讨论了四种测量波导薄膜的有效方法，对各种测量方法作了分析研究，并着重对棱镜耦合法进行了实验研究。
An inconvenience of prism couplers is that the prism material must have a high refractive index.
棱镜耦合器的一个不方便的地方是棱镜材料必须有较高的折射率。
The parameters of the optical slab glass waveguide (refractive index and thickness of thin film) were measured by a new technique for using the prism coupler, i. e., leaky mode method.
由使用棱镜耦合器的一种新技术即漏模法，测量了平板玻璃光波导的参数(薄膜的折射率和厚度)。
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