Materials, Photonic Devices, and Sensors

Study on high temperature Fabry–Perot fiber acoustic sensor with temperature self-compensation

[+] Author Affiliations
Pan Hu, Xinglin Tong, Minli Zhao, Chengwei Deng, Qian Guo, Yan Mao, Kun Wang

Wuhan University of Technology, National Engineering Laboratory for Fiber Optic Sensing Technology, No. 122 Luoshi Road, Wuhan 430070, China

Wuhan University of Technology, Key Laboratory of Fiber Optic Sensing Technology and Information Processing, No. 122 Luoshi Road, Wuhan 430070, China

Opt. Eng. 54(9), 097104 (Sep 10, 2015). doi:10.1117/1.OE.54.9.097104
History: Received April 27, 2015; Accepted August 11, 2015
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Abstract.  A Fabry–Perot (F-P) fiber acoustic sensor, which can work under high-temperature harsh environment with temperature self-compensation, is designed and prepared. A condenser was used to maintain the sensor to work in a stable temperature environment. Because of the special structure of the sensor and the function of the condenser, the cavity variation of the sensor caused by changes of external temperature from 10°C to 500°C would not exceed 8 nm. The experimental results show that the sensor has a good frequency response in a range of 1 to 5 kHz and the field experiment results show that it could be used for hydraulic decoking online monitoring by judging the acoustic frequency spectrum.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Topics

Sensors

Citation

Pan Hu ; Xinglin Tong ; Minli Zhao ; Chengwei Deng ; Qian Guo, et al.
"Study on high temperature Fabry–Perot fiber acoustic sensor with temperature self-compensation", Opt. Eng. 54(9), 097104 (Sep 10, 2015). ; http://dx.doi.org/10.1117/1.OE.54.9.097104


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