refractive-index profile的用法和樣例：
例句
- It can be applied to an arbitary refractive index profile of the MQW waveguide.
該公式是偏振態和量子阱波導折射率分佈的函數。 - As it has good cost-performance, the perfluorinated polymer graded index plastic fiber is finding applications in FTTH.
氟化聚合物的梯度折射率分佈的塑料光纖因為具有良好的性價比，所以在光纖到戶中正在逐漸得到應用。
