gradient index fiber

例句：

1. 1.The gradient index fiber is used in the fabrication of optical devices.
   梯度指数纤维用于制造光学设备。
2. 2. The gradient index fiber has been proven to be an effective medium for transmitting light.
   梯度指数纤维已被证明是传输光的有效介质。
3. 3. In recent years, researchers have focused on developing new materials with gradient index fibers.
   近年来，研究人员专注于开发具有梯度指数纤维的新材料。