Modeling of Fiber Bragg Grating Hydrogen Sensor with Multiple Membranes

Abstract:

This paper develops a multiple membranes fiber Bragg grating (FBG) hydrogen sensor and investigates the relationship between wavelength of FBG hydrogen sensor and ambient hydrogen concentration. A physical and mathematical model is built to explain the sensor behavior when it is subjected to the changes in hydrogen concentration and in temperature. The shifts in Bragg wavelengths of the Pd-coated FBG hydrogen sensor as a function of hydrogen partial pressure is obtained. Thus the developed FBG hydrogen sensor has a linear response to hydrogen in the low concentration range. Tests were carried on to prove the relationship between wavelength shift and hydrogen concentration.

• Periodical: Applied Mechanics and Materials (Volumes 738-739)
• Pages: 15-18
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.738-739.15
• Online since: March 2015
• Authors: Ying Ting Luo*, Hao Wu, Yong Huang, Xiong Li, Hong Tu Song, Zhen Wu
• Keywords: Hydrogen Concentration, Hydrogen Sensor, Modeling, Multiple Layers, Pure Palladium

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