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Optical Engineering

Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution
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Paper 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 57.7  pm/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.

Paper Details

Date Published: 11 September 2015
PDF: 6 pages
Opt. Eng. 54(9) 096104 doi: 10.1117/1.OE.54.9.096104
Published in: Optical Engineering Volume 54, Issue 9
Show Author Affiliations
Vengal Rao Pachava, National Institute of Technology, Warangal (India)
Srimannarayana Kamineni, National Institute of Technology, Warangal (India)
Sai Shankar Madhuvarasu, National Institute of Technology, Warangal (India)
Venkata Reddy Mamidi, National Institute of Technology, Warangal (India)

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