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Optical Engineering

Numerical and experimental studies of high-sensitivity plug-in pressure sensor based on fiber Bragg gratings
Author(s): Hongtao Zhang; Wenping Song; Zhenlong Wang; Bin Guo; Guangyu Zhang; LiLi Liu
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Paper Abstract

A high-sensitivity pressure sensor based on wavelength detection technology of fiber Bragg grating (FBG) is proposed in this paper. The FBG pressure sensor can be used to measure downhole pressure of oil and gas wells. An eccentric-pushrod structure is used to improve the sensitivity of the sensor. The effect of adhesive on elastic hysteresis of the sensor is analyzed, and the adhesive with large shear modulus is used to reduce the hysteresis of the sensor. Numerical and experimental results show that this sensor possesses good linearity and repeatability, as well as little elastic hysteresis. The sensitivity of the sensor can reach 230.9  pm/MPa when the measured pressure is in the range of 0 to 20 MPa.

Paper Details

Date Published: 8 September 2016
PDF: 8 pages
Opt. Eng. 55(9) 096104 doi: 10.1117/1.OE.55.9.096104
Published in: Optical Engineering Volume 55, Issue 9
Show Author Affiliations
Hongtao Zhang, Harbin Institute of Technology (China)
Wenping Song, Harbin Institute of Technology (China)
Zhenlong Wang, Harbin Institute of Technology (China)
Bin Guo, Harbin Institute of Technology (China)
Guangyu Zhang, Harbin Institute of Technology (China)
LiLi Liu, Harbin Institute of Technology (China)

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