التفاصيل البيبلوغرافية
| العنوان: |
A New Hydrogen Sensor Based on SNS Fiber Interferometer with Pd/WO3 Coating. |
| المؤلفون: |
Jin-xin Shao, Wen-ge Xie, Xi Song, Ya-nan Zhang |
| المصدر: |
Sensors (14248220); Sep2017, Vol. 17 Issue 9, p2144, 10p, 2 Diagrams, 8 Graphs |
| مستخلص: |
This 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. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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