fibre-optic light guide

例句：

1. 1. The fibre-optic light guide is used to transmit light signals in a long distance.
   光纤导光管用于在长距离内传输光信号。
2. 2. In the fiber-optic light guide, light is guided along the fibers without any loss.
   在光纤导光管中，光沿着纤维传播而没有损失。
3. 3. The fiber-optic light guide is essential for modern communication systems.
   光纤导光管对于现代通信系统至关重要。