DocumentCode
20033
Title
Fabry–Pérot Interferometer Sensor Fabricated by Femtosecond Laser for Hydrogen Sensing
Author
Wang, Michael ; Yang, May ; Cheng, James ; Zhang, Ge ; Liao, C.R. ; Wang, D.N.
Author_Institution
National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan, China
Volume
25
Issue
8
fYear
2013
fDate
15-Apr-13
Firstpage
713
Lastpage
716
Abstract
In this letter, an optical fiber hydrogen sensor based on a Fabry–Pérot interferometer cavity fabricated by femtosecond laser micromachining near the fiber end and deposited with Pd film is proposed. The relationship between the reflection spectrum and the hydrogen concentration is simulated, and experimentally demonstrated. The shifts of the interferometer output spectrum are 10, 30, 100, and 150 pm respectively, corresponding to the hydrogen concentration of 2%, 4%, 6%, and 8%, respectively. The proposed sensor is compact, easy in fabrication, and has high potential for hydrogen detection.
Keywords
Films; Hydrogen; Optical fiber sensors; Optical fibers; Reflection; Temperature measurement; Temperature sensors; Fabry–Pérot interferometer (FPI); laser machining; optical fiber sensors; thin films;
fLanguage
English
Journal_Title
Photonics Technology Letters, IEEE
Publisher
ieee
ISSN
1041-1135
Type
jour
DOI
10.1109/LPT.2013.2241421
Filename
6415993
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