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±êÌ⣺¡°Hydrogen sensor based on side-polished fiber Bragg gratings coated with thin palladium film¡± ×÷ÕߣºHongliang Liu, Minghong Yang,Jixiang Dai, et al.. 21st International Conference on Optical Fiber Sensors, Proc. SPIE 7753, 77538O,2011,doi:10.1117/12.884679. |
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EI Accession number: 12008854 Title: Hydrogen sensor based on side-polished fiber Bragg gratings coated with thin palladium film Authors: Hongliang Liu1; Minghong Yang1 Email author minghong.yang@whut.edu.cn; Jixiang Dai1; Kun Cao1; Hansheng Liao1; Pengcheng Zhang1 Author affiliation: 1 Nat. Eng. Lab. for Opt. Fiber Sensors, Wuhan Univ. of Technol., Wuhan, China Source title: Proceedings of the SPIE - The International Society for Optical Engineering Abbreviated source title: Proc. SPIE - Int. Soc. Opt. Eng. (USA) Volume: 7753 Publication date: 2011 Pages: 77538O (4 pp.) Language: English ISSN: 0277-786X CODEN: PSISDG Document type: Conference article (CA) Conference name: 21st International Conference on Optical Fiber Sensors Conference date: 15-19 May 2011 Conference location: Ottawa, ON, Canada Publisher: SPIE - The International Society for Optical Engineering Country of publication: USA Material Identity Number: AY54-2011-129 Abstract: A hydrogen sensor based on side-polished fiber Bragg grating (FBG) coated with Pd thin film by magnetron sputtering is proposed. Hydrogen concentration is correlated with the shift of FBG central wavelength, since refractive index change in hydrogen sensitive Pd coating deposited on side-polished FBG affects the effective refractive index of FBG, and therefore Bragg wavelength is shifted. Experimental results demonstrate that FBG wavelength shifts to lower wavelength as the hydrogen concentration increases. The proposed optical fiber hydrogen sensor shows 15pm wavelength shift in 0.01% volume percentage of hydrogen concentration, and totally 246pm offset exists in pure hydrogen environment. Number of references: 6 Inspec controlled terms: Bragg gratings - fibre optic sensors - gas sensors - metallic thin films - palladium - refractive index - sputtering Uncontrolled terms: optical fiber hydrogen sensor - side-polished fiber Bragg gratings - palladium thin film - magnetron sputtering - hydrogen concentration - FBG central wavelength - refractive index - Bragg wavelength - wavelength 15 pm - H2 Inspec classification codes: A4281P Fibre optic sensors; fibre gyros - A8280T Chemical sensors - A4280F Gratings, echelles - B7230E Fibre optic sensors - B7230L Chemical sensors - B7320T Chemical variables measurement - B4125 Fibre optics Numerical data indexing: wavelength 1.5E-11 m Chemical indexing: H2/el H/el Treatment: Experimental (EXP) Discipline: Physics (A); Electrical/Electronic engineering (B) DOI: 10.1117/12.884679 IPC Code: G02B5/18 SECTION G PHYSICS OPTICS making optical elements or apparatus , , , or other appropriate subclasses or classes; materials per se, see the relevant places, e.g. , OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS takes precedence; optical elements specially adapted for use in lighting devices or systems thereof ; measuring-instruments, see the relevant subclass of class... Optical elements other than lenses light guides ; optical logic elements 4 Diffracting gratings |
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