Preparation method for fabry-perot sensor based on corroded high doping optical fiber
A production method and high-doping technology, which is applied in the direction of transmitting sensing components with optical devices, can solve the problems of poor mechanical strength, small fiber diameter, and difficult welding of FAP sensors, and achieve low cost, reduced corrosion, and The effect of reducing the corrosion rate
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[0023] Schematic diagram of the production process of the optical fiber FAPO sensor based on corroding highly doped optical fibers. Figure 1 ~ Figure 3 shown. First, a 40% by mass hydrofluoric acid solution and a 35% by mass hydrochloric acid solution were formulated into a corrosion solution with a total volume of 60 mL at a volume ratio of 3:1. The highly doped fiber adopts erbium-doped single-mode fiber from Nufern Company, the model is EDFC-980-HP. Cut the end face of the erbium-doped fiber flat, such as figure 1 As shown above, put in the etching solution for etching. After 25 minutes, take out the corroded erbium-doped optical fiber and soak it in deionized water for about 20 minutes to wash off the residual corrosion solution, then place it in a dust-free environment to dry, or dry it with a hair dryer before use. The core part of the fiber end face will be corroded into a micropore, and the actual etched three-dimensional profile of the fiber end face is as follows...
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