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Published on: January 7, 2019
Fiber Bragg grating temperature sensor with controllable sensitivity
1School of Electrical Engineering, Seoul National University, Kwanak-Gu Shinlim-Dong, Seoul 151-742, Korea.
Abstract:
We demonstrate a fiber Bragg grating (FBG) sensor with controllable sensitivity by connecting two metal strips that have different temperature-expansion coefficients. By changing the lengths of the metal strips we successfully controlled and improved the temperature sensitivity to 3.3 times of that of bare FBG.
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