１８７０年人们通过观察到酒桶中冒出的细酒流能把光线弯弯曲曲传输的现象，悟出了光线能在芯线折射率高而外层折射率低的透明介质中全反射弯弯曲曲地向前传输，很快就用玻璃丝作出了光纤，为了降低光传输的损耗，近年来多用石英（即二氧化硅）制做光纤。光纤的分类，从芯线与 In 1870, people observed the phenomenon that the thin stream of wine flowing out of the wine barrel could bend and transmit the light, and realized that the light can reflect the total reflection in the transparent medium with high refractive index of the core and low refractive index of the outer layer Curly forward transmission, and soon made with glass fiber, in order to reduce the loss of optical transmission, quartz in recent years (more silica) made of optical fiber. Fiber classification, from the core wire and