Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution

Vengal Rao Pachava; Srimannarayana Kamineni; Sai Shankar Madhuvarasu; Venkata Reddy Mamidi

doi:10.1117/1.OE.54.9.096104

11 September 2015 Fiber Bragg grating–based hydraulic pressure sensor with enhanced resolution

Vengal Rao Pachava, Srimannarayana Kamineni, Sai Shankar Madhuvarasu, Venkata Reddy Mamidi

Author Affiliations +

Optical Engineering, Vol. 54, Issue 9, 096104 (September 2015). https://doi.org/10.1117/1.OE.54.9.096104

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.

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

Published: 11 September 2015

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