玻璃纤维能以低损耗来传输光。可是,在此之前,首先必须将光控制在最大的入射角内才能注入纤维的芯部。这就是光源与光纤维的光耦合,或者也是纤维与纤维连接时应考虑的基本因素。低损耗纤维的最大入射角通常小至10度以下,而提高光耦合效率的技术则与光纤低损耗化具有同等的重要性。 Fiberglass transmits light with low loss. However, prior to this, first the light must be controlled at the maximum angle of incidence to inject the core of the fiber. This is the light source and optical fiber optical coupling, or fiber and fiber is also connected to consider the basic factors. The maximum angle of incidence for low-loss fibers is usually as small as 10 degrees or less, while the technique for increasing the optical coupling efficiency is as important as optical fiber loss reduction.