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

作者：Hsieh Tso Sheng; Chen Yi Chian; Chiang Chia Chin

来源：Micromachines, 2016, 7(12): 227.

DOI：10.3390/mi7120227

• temperature sensitivity
• gas nitriding process
• fiber Bragg grating
• thermo-optic coefficient

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.

• 出版日期2016-12