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Proceedings Paper

Performance evaluation of temperature-compensated FBG pressure sensor
Author(s): Ting Fu; Yuan Gong; Yu Wu; Yun-Jiang Rao; Yao-Yuan Ma; Wen-Qian Niu
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Paper Abstract

A fiber Bragg grating (FBG) sensor packaged with a thin-wall alloy tube for simultaneous measurement of temperature and pressure is proposed. The influence of the structural parameters on the pressure sensitivity is investigated both numerically and experimentally. Experimental results agree well with the simulations. The pressure sensitivities of 7.8 pm/MPa and temperature sensitivity of 20.1 pm/°C are obtained in the measurement range of 0-60 MPa and 0-150°C, respectively. High repeatability and high linearity of the pressure measurement are confirmed by the experiment. By changing the materials with different elastic modulus, the inner diameter and thickness of the alloy tube, the measuring range and sensitivity of the sensor can be further optimized. The sensing performance of the sensor is also compared with a FBG sensor with another packaging structure. Preliminary results indicates that the sensor has good sensing performance and is promising to be used for long-term pressure sensing in harsh environments.

Paper Details

Date Published: 29 August 2013
PDF: 5 pages
Proc. SPIE 8914, International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography, 89140M (29 August 2013); doi: 10.1117/12.2033673
Show Author Affiliations
Ting Fu, Univ. of Electronic Science and Technology of China (China)
Yuan Gong, Univ. of Electronic Science and Technology of China (China)
Yu Wu, Univ. of Electronic Science and Technology of China (China)
Yun-Jiang Rao, Univ. of Electronic Science and Technology of China (China)
Yao-Yuan Ma, Univ. of Electronic Science and Technology of China (China)
Wen-Qian Niu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 8914:
International Symposium on Photoelectronic Detection and Imaging 2013: Fiber Optic Sensors and Optical Coherence Tomography
Yunjiang Rao, Editor(s)

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