A New Hydrogen Sensor Based on SNS Fiber Interferometer with Pd/WO3 Coating
AbstractThis paper presents a new hydrogen sensor based on a single mode–no core–single mode (SNS) fiber interferometer structure. The surface of the no core fiber (NCF) was coated by Pd/WO3 film to detect the variation of hydrogen concentration. If the hydrogen concentration changes, the refractive index of the Pd/WO3 film as well as the boundary condition for light propagating in the NCF will all be changed, which will then cause a shift into the resonant wavelength of interferometer. Therefore, the hydrogen concentration can be deduced by measuring the shift of the resonant wavelength. Experimental results demonstrated that this proposed sensor had a high detection sensitivity of 1.26857 nm/%, with good linearity and high accuracy (maximum 0.0055% hydrogen volume error). Besides, it also possessed the advantages of simple structure, low cost, good stability, and repeatability. View Full-Text
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Shao, J.; Xie, W.; Song, X.; Zhang, Y. A New Hydrogen Sensor Based on SNS Fiber Interferometer with Pd/WO3 Coating. Sensors 2017, 17, 2144.
Shao J, Xie W, Song X, Zhang Y. A New Hydrogen Sensor Based on SNS Fiber Interferometer with Pd/WO3 Coating. Sensors. 2017; 17(9):2144.Chicago/Turabian Style
Shao, Jinxin; Xie, Wenge; Song, Xi; Zhang, Yanan. 2017. "A New Hydrogen Sensor Based on SNS Fiber Interferometer with Pd/WO3 Coating." Sensors 17, no. 9: 2144.
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