Journal
MICROMACHINES
Volume 7, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/mi7120227
Keywords
temperature sensitivity; gas nitriding process; fiber Bragg grating; thermo-optic coefficient
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Funding
- Ministry of Science and Technology, Taiwan [MOST 105-2623-E-151-002-D, 105-2218-E-212-001]
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In this paper, we report the numerical calculations for a thermo-optical model and the temperature sensitivity of a fiber Bragg grating (FBG) sensor. The thermally-induced behaviors of a FBG sensor in the gas nitriding process were analyzed for temperatures ranging from 100-650 degrees C. The FBG consisted of properly chosen photosensitive fiber materials with an optimized thermo-optic coefficient. The experimental and optimized thermo-optic coefficient results were consistent in terms of temperature sensitivity. In these experiments, the temperature sensitivity of the FBG was found to be 11.9 pm/degrees C.
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