High-temperature measurement using fiber Bragg grating integrated with a transducer

Venkata Reddy Mamidi; Srimannarayana Kamineni; L. N. Sai Prasad Ravinuthala; Venkatapparao Thumu; Vengal Rao Pachava

doi:10.1117/1.OE.55.11.116104

16 November 2016 High-temperature measurement using fiber Bragg grating integrated with a transducer

Venkata Reddy Mamidi, Srimannarayana Kamineni, L. N. Sai Prasad Ravinuthala, Venkatapparao Thumu, Vengal Rao Pachava

Author Affiliations +

Optical Engineering, Vol. 55, Issue 11, 116104 (November 2016). https://doi.org/10.1117/1.OE.55.11.116104

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.

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Venkata Reddy Mamidi, Srimannarayana Kamineni, L. N. Sai Prasad Ravinuthala, Venkatapparao Thumu, and Vengal Rao Pachava "High-temperature measurement using fiber Bragg grating integrated with a transducer," Optical Engineering 55(11), 116104 (16 November 2016). https://doi.org/10.1117/1.OE.55.11.116104

Published: 16 November 2016

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