Abstract
In this paper, a new optical fiber Fabry-Perot force sensor structure was designed based on the extrinsic optical fiber Fabry-Perot sensor. The sensor had the advantages of small size, high temperature and high pressure resistance, and had good resistance to strong electromagnetic interference. It can measure the friction force on the heat transfer pipe of steam generator in the harsh environment. The transmission characteristics of the sensor were analysed, and the performance of the sensor was simulated. Theoretically, the sensitivity of the sensor can reach 2.591 nm/N, and the minimum resolution can reach 11.309 N.
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