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Microstructured FBG hydrogen sensor based on Pt-loaded WO3
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DOI：10.1364/OE.25.008777.png)
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摘要
En 中文
Hydrogen gas sensing properties of Pt-WO3 films on spiral microstructured fiber Bragg grating (FBG) has been demonstrated. Pt-WO3 film was prepared by hydrothermal method. The spiral microsturctured FBG was fabricated using femtosecond laser. Spiral microstructure FBG hydrogen sensor can detect hydrogen concentration from 0.02% H-2 to 4% H-2 at room temperature, and the response time is shortened from a few minutes to 10 similar to 30 s. Double spiral microstructure at pitch 60 mu m and sputtered with 2 mu m Pt-WO3 film recorded hydrogen sensitivity of 522 pm/%(v/v) H-2 responding to hydrogen gas in air. This translated to approximately 2 similar to 4 times higher than the unprocessed standard FBG. The humidity has little effect on the sensing property. The sensor has fast response time, good stability, large detection range and has the good prospect of practical application for hydrogen leak detection. (C) 2017 Optical Society of America
Keyword:
DIFFERENT MORPHOLOGIES
FEMTOSECOND LASER
FIBER
TEMPERATURE
FILM
LEAK
AIR
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期刊
IF:
3.3
论文数:
6.1W
被引数:
14.3W
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