Lasers, Fiber Optics, and Communications

Numerical and experimental studies of high-sensitivity plug-in pressure sensor based on fiber Bragg gratings

[+] Author Affiliations
Hongtao Zhang

Harbin Institute of Technology, P. O. Box 306, 92 West Dazhi Street, Harbin, Heilongjiang Province 150001, China

Harbin Institute of Technology, Postdoc Station of Mechanical Engineering, P. O. Box 306, 92 West Dazhi Street, Harbin, Heilongjiang Province 150001, China

Wenping Song

Harbin Institute of Technology, P. O. Box 306, 92 West Dazhi Street, Harbin, Heilongjiang Province 150001, China

Harbin Institute of Technology, Postdoc Station of Materials Science and Engineering, P. O. Box 306, 92 West Dazhi Street, Harbin, Heilongjiang Province 150001, China

Zhenlong Wang, Bin Guo, Guangyu Zhang, LiLi Liu

Harbin Institute of Technology, P. O. Box 306, 92 West Dazhi Street, Harbin, Heilongjiang Province 150001, China

Opt. Eng. 55(9), 096104 (Sep 08, 2016). doi:10.1117/1.OE.55.9.096104
History: Received May 22, 2016; Accepted August 15, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Hongtao Zhang ; Wenping Song ; Zhenlong Wang ; Bin Guo ; Guangyu Zhang, et al.
"Numerical and experimental studies of high-sensitivity plug-in pressure sensor based on fiber Bragg gratings", Opt. Eng. 55(9), 096104 (Sep 08, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.096104


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