germanium-doped silica core multimode fiber

例句：

1. 1.This type of fiber is commonly used in telecommunications and data transmission applications.
   这种光纤常用于电信和数据传输应用。
2. 2.The multimode fiber is designed to transmit light over long distances with high efficiency.
   多模光纤设计用来远距离高效传输光。
3. 3.In the field of optical communication, germanium-doped silica core multimode fibers are widely used for data transmission and backbone network construction.
   在光学通信领域，掺锗硅芯多模光纤被广泛用于数据传输和骨干网络建设。