摘要
着重分析了影响光纤传输能量以及光纤传输中造成能量损耗的因素。这些因素主要包括光纤材料、构造、光纤的折射率分布、光纤的长度和芯径、光纤的数值孔径和热效应以及耦合等。同时 ,结合激光二极管点火的实例 ,分析探讨了其背景和应用价值。结论是 :为了尽可能减少能量损耗、提高光纤输出的激光功率和激光功率密度 ,应当选取合适的激光工作波长、较小的光纤长度、较小的芯径和较小的数值孔径 ,应采用渐变折射率分布光纤 。
The influence factors of energy transmission and energy loss in optical fiber ar e analysed. The factors include the material, the structure, the refractive index distributing, the length, the diameter, the num erical aperture,thermal effect and the coupling of optical fiber. The significa nce is simultaneously analyzed using laser diode ignition as the example. The co nclusions are that it is indispensable to select the appropriate laser wa velength, the shorter length, the smaller laser diameter, the less numerical ape rture, using the graded index optical fiber, and the less bends and couplings fo r decreasing the energy loss and increasing the deferent laser powerdensity.
出处
《光学技术》
CAS
CSCD
2002年第4期341-342,共2页
Optical Technique
