JIEIE - Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

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Journal of the Korean Institute of Illuminating and Electrical Installation Engineers

ISO Journal TitleJ Korean Inst. IIIum. Electr. Install. Eng.

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Title	Sensitivity Improvement of Fiber Bragg Grating Temperature Sensor
Authors	Han-Chul Kang ; Min-Ho Song
DOI	http://dx.doi.org/10.5207/JIEIE.2012.26.3.040
Page	pp.40-45
ISSN	1225-1135
Keywords	FBG(Fiber Bragg Grating) ; Temperature Sensor ; Temperature ; Strain ; Bi-Metal
Abstract	We substantially increased the temperature sensitivity of a fiber Bragg grating temperature sensor by gluing it onto a piece of bi-metal strip. The temperature-induced Bragg wavelength shift is increased upto 5 times more than that of the intrinsic FBG sensor by the strain effect from the deflected bi-metal. We showed the feasibility of the proposed sensor by comparing the temperature measuring experiments with those of the intrinsic FBG sensors. Also we measured temperature varying the length of the bi-metal pieces and analyzed the result effect of it.

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