Fiber Bragg Grating Hydrogen Sensor Based on Magnetron Sputtering

Abstract:

This paper presents the development and fabrication of fiber Bragg grating hydrogen sensor by using magnetron sputtering method to overcome the problem of hydrogen embrittlement.With compact, smooth and high quality thin films deposited by magnetron sputtering, two layers have been sputtered around the fiber cladding: titanium (Ti) layer (20nm) and palladium (Pd) layer (500nm). Between the two layers, Ti is acted as adhesive coatings to ensure connection between fiber and Pd film. Finally, the performance of the developed FBG hydrogen sensor was tested in the laboratory under low hydrogen concentration. The results prove that the fabricated hydrogen sensor has a high sensitivity of 22.67pm/%H₂.

• Periodical: Applied Mechanics and Materials (Volumes 738-739)
• Pages: 3-6
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.738-739.3
• Online since: March 2015
• Authors: Hong Bin Wang*, Ying Ting Luo, Feng Li, Hong Tu Song, Zhen Wu, Xiong Li
• Keywords: Fiber Bragg Grating, High Sensitivity, Hydrogen Sensor, Magnetron Sputtering, Palladium

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