光纤通信是激光应用的一个重要领域。以纤维作传输介质的光纤通信不受大气影响,但光在纤维中传输损耗每公里达数千分贝,这是无法用于通信的。1970年秋美国康宁公司以高纯石英原料采用新的工艺拉出损耗2.0分贝/公里(λ=0.6328微米)的包层光纤,证实了光纤用于通信的可能性。随着原料纯度的提高和工艺的改进,纤维损耗逐 Fiber optic communication is an important area of ​​laser applications. Fiber communication with fiber as the transmission medium is unaffected by the atmosphere, but optical transmission losses in the fiber can reach several thousand decibels per kilometer, which can not be used for communication. The fall of 1970, Corning Incorporated, USA, used a new process of high-purity quartz to pull out cladding optical fiber with a loss of 2.0 dB / km (λ = 0.6328 μm), confirming the possibility of optical fiber for communication. With the improvement of raw material purity and process improvement, the fiber loss by