Lasers, Fiber Optics, and Communications

Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution

[+] Author Affiliations
Vengal Rao Pachava, Srimannarayana Kamineni, Sai Shankar Madhuvarasu, Venkata Reddy Mamidi

National Institute of Technology, Photonics Division, Department of Physics, Warangal 506004, India

Opt. Eng. 54(9), 096104 (Sep 11, 2015). doi:10.1117/1.OE.54.9.096104
History: Received March 20, 2015; Accepted August 10, 2015
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Abstract.  This paper reports a simple technique for hydraulic pressure measurement with enhanced resolution using a fiber Bragg grating (FBG) and a metal spring which acts as transducer. The sensor works by means of measuring the Bragg wavelength shift of FBG caused by the longitudinal elongation of optical fiber due to applied pressure. Experimental results show that the sensor possesses good linearity and repeatability in pressure measurement ranging over 0 to 55 bar, with a sensitivity of 57.7pm/bar. A wavelength-intensity interrogation scheme using single-multiple-single-mode fiber structure is designed for FBG sensor, which enabled the system to be compact, lightweight, inexpensive, and high resolution.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Vengal Rao Pachava ; Srimannarayana Kamineni ; Sai Shankar Madhuvarasu and Venkata Reddy Mamidi
"Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution", Opt. Eng. 54(9), 096104 (Sep 11, 2015). ; http://dx.doi.org/10.1117/1.OE.54.9.096104


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