Pd-Ag film coated LPG for hydrogen sensing

被引：0
|
作者：
Fang, Yang [1 ]
Duan, Fajie [1 ]
Zhang, Min [2 ]
Wang, Liwei [2 ]
Liao, Yanbiao [2 ]
机构：
[1] Tianjin Univ, Coll Precis Instrument & Optoelect, Tianjin, Peoples R China
[2] Tsinghua Univ, Opt Fiber Sensor Lab, Beijing, Peoples R China
来源：
THIRD INTERNATIONAL CONFERENCE ON SMART MATERIALS AND NANOTECHNOLOGY IN ENGINEERING | 2012年 / 8409卷
关键词：
long period gratings; hydrogen sensing; palladium silver film; FIBER GRATINGS; SENSORS;
D O I：
10.1117/12.923871
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A palladium silver (Pd-Ag) film coated LPG for hydrogen sensing is represented in this paper. This hydrogen sensor is a LPG coated with Pd-Ag film, and the thick of the film is about 70nm. When the sensor is exposed to hydrogen, the refractive index of Pd-Ag will change, and it will cause the shift of the resonance wavelength of LPG. Therefore, the concentration of hydrogen can be monitored by measuring the shift of resonance wavelength of LPG. The preliminary experiment shows that Pd-Ag film coated LPG has an obvious response to 3 similar to 4% hydrogen, with a response time of a few minutes at 4% hydrogen.
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页数：6
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