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Proceedings Paper

Enhancing the temperature sensitivity of fiber Bragg grating sensor using bimetallic strip
Author(s): P. Saidi Reddy; K. Srimannarayana; R. L. N. S. Sai Prasad; D. Sen Gupta; M. Sai Shankar; P. Kishore
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Paper Abstract

This paper presents theoretical and experimental results carried out on a simple structure based on bimetallic cantilever to enhance temperature sensitivity of fiber Bragg grating (FBG) sensors. Two metals of equal length and width but having different coefficients of thermal expansion (CTE) are bonded with electric arc welding to form the bimetallic strip and FBG was longitudinally affixed to that metallic strip having larger coefficient of thermal expansion. It was observed that the temperature sensitivity of the proposed FBG sensor has increased 5 times more compared to the bare FBG sensor. Moreover, the proposed sensor showed excellent linearity, reversibility, and repeatability.

Paper Details

Date Published: 30 January 2012
PDF: 6 pages
Proc. SPIE 8351, Third Asia Pacific Optical Sensors Conference, 83511B (30 January 2012); doi: 10.1117/12.914056
Show Author Affiliations
P. Saidi Reddy, National Institute of Technology, Warangal (India)
K. Srimannarayana, National Institute of Technology, Warangal (India)
R. L. N. S. Sai Prasad, National Institute of Technology, Warangal (India)
D. Sen Gupta, National Institute of Technology, Warangal (India)
M. Sai Shankar, National Institute of Technology, Warangal (India)
P. Kishore, National Institute of Technology, Warangal (India)


Published in SPIE Proceedings Vol. 8351:
Third Asia Pacific Optical Sensors Conference
John Canning; Gangding Peng, Editor(s)

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