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Micromachines 2016, 7(12), 227; doi:10.3390/mi7120227

Analysis and Optimization of Thermodiffusion of an FBG Sensor in the Gas Nitriding Process

Department of Mechanical Engineering, National Kaohsiung University of Applied Sciences, Kaohsiung 807, Taiwan
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Academic Editors: Teen-Hang Meen and Joost Lötters
Received: 3 October 2016 / Revised: 28 November 2016 / Accepted: 5 December 2016 / Published: 12 December 2016
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Abstract

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 °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/°C. View Full-Text
Keywords: temperature sensitivity; gas nitriding process; fiber Bragg grating; thermo-optic coefficient temperature sensitivity; gas nitriding process; fiber Bragg grating; thermo-optic coefficient
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Hsieh, T.-S.; Chen, Y.-C.; Chiang, C.-C. Analysis and Optimization of Thermodiffusion of an FBG Sensor in the Gas Nitriding Process. Micromachines 2016, 7, 227.

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