Improved Performance of Fiber Bragg Hydrogen Sensors Assisted by Controllable Optical Heating System
IEEE Photonics Technology Letters（2017）
Abstract
A novel fiber Bragg grating (FBG) hydrogen sensor based on the Pd/Ni composite film and controllable laser heating system is proposed and demonstrated with enhanced sensitivity. The Pd/Ni composite film was sputtered around the greatly etched FBG, and the atomic ratio of Pd and Ni was controlled at 91:9 during the sputtering process. A 980-nm pump laser and proportion integration differentiation c...
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Key words
Hydrogen,Heating,Fiber gratings,Temperature sensors,Films
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