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Optical Engineering

High-temperature measurement using fiber Bragg grating integrated with a transducer
Author(s): Venkata Reddy Mamidi; Srimannarayana Kamineni; L. N. Sai Prasad Ravinuthala; Venkatapparao Thumu; Vengal Rao Pachava
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Paper Abstract

A high-temperature sensor using fiber Bragg grating (FBG) integrated with a transducer has been designed, developed, and tested. The transducing element furnishes temperature-dependent tensile strain on FBG by means of differential linear thermal expansion of two different materials—mild steel and stainless steel. The designed sensor is compact, cost effective, and measures temperatures between 20°C and 1000°C. The electrical means output of the sensor against applied temperature is found to be fitted with a second-degree polynomial. The achieved resolution at room temperature is 2°C and is found to be better when moving toward higher temperatures. However, by optimizing the materials and physical dimensions of the transducer, it is possible to improve the temperature range and performance of the sensor.

Paper Details

Date Published: 16 November 2016
PDF: 7 pages
Opt. Eng. 55(11) 116104 doi: 10.1117/1.OE.55.11.116104
Published in: Optical Engineering Volume 55, Issue 11
Show Author Affiliations
Venkata Reddy Mamidi, National Institute of Technology, Warangal (India)
Srimannarayana Kamineni, K L Univ. (India)
L. N. Sai Prasad Ravinuthala, National Institute of Technology, Warangal (India)
Venkatapparao Thumu, National Institute of Technology, Warangal (India)
Vengal Rao Pachava, National Institute of Technology, Warangal (India)


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