Two methods of measurement of the refractive index profile in optical fibers: interference microscope method and near field method are evaluated.

对两种测量光纤折射半剖面的方法：干涉显微镜法和近区场法，进行了评价。

youdao

The theory of nonlinear refractive-index profile measurement of fibers using two-beam interferometric method is introduced, and the result of this experiment is given.

介绍了使用双光束干涉法测量变折射率光纤设备的原理及实验结果。

youdao

Compared with optical fiber, optical fiber preform is characterized by its bigger size, so the measurement method for its refractive index profile has uniqueness.

光纤预制棒相对于光纤而言，由于其尺寸大的特点，折射率分布的测量方法具有独特性。

youdao