Lasers, Fiber Optics, and Communications

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

[+] Author Affiliations
Venkata Reddy Mamidi, L. N. Sai Prasad Ravinuthala, Venkatappa Rao Tumu, Vengal Rao Pachava

National Institute of Technology, Department of Physics, Warangal 506004, India

Srimannarayana Kamineni

Koneru Lakshmaiah University, Department of Physics, Guntur 522502, India

Opt. Eng. 55(11), 116104 (Nov 16, 2016). doi:10.1117/1.OE.55.11.116104
History: Received August 25, 2016; Accepted October 25, 2016
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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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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Venkata Reddy Mamidi ; Srimannarayana Kamineni ; L. N. Sai Prasad Ravinuthala ; Venkatappa Rao Tumu and Vengal Rao Pachava
"High-temperature measurement using fiber Bragg grating integrated with a transducer", Opt. Eng. 55(11), 116104 (Nov 16, 2016). ; http://dx.doi.org/10.1117/1.OE.55.11.116104


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