Yuan Yinquan, Wang Lina, Ding Liyun, Wu Chenhui
National Engineering Laboratory for Fiber Optical Sensing Technology, Wuhan University of Technology, Wuhan 430070, China.
Appl Opt. 2012 Aug 20;51(24):5845-9. doi: 10.1364/AO.51.005845.
Based on fiber Bragg grating (FBG), an online monitoring system for the etching process of optical fiber in a hydrofluoric (HF) acid solution has been designed. The variation curves of the wavelength shifts of FBGs with etching time at three different temperatures have been obtained and analyzed theoretically. The results show that the etching process of optical fiber in HF acid solution can be understood by the variation of the wavelength shift of FBG with etching time. Finally, required tapered fiber tips can be made by controlling the etching velocity and the pulling velocity of optical fiber from the etching solution.
基于光纤布拉格光栅（FBG），设计了一种用于监测光纤在氢氟酸（HF）溶液中蚀刻过程的在线监测系统。获得了三种不同温度下FBG波长漂移随蚀刻时间的变化曲线，并进行了理论分析。结果表明，通过FBG波长漂移随蚀刻时间的变化可以理解光纤在HF酸溶液中的蚀刻过程。最后，通过控制蚀刻速度和光纤从蚀刻溶液中的拉出速度，可以制作出所需的锥形光纤尖端。
