Optical fiber hydrogen sensor based on light reflection and a palladium-sliver thin film  

作　　者：崔陆军 尚会超 张冈 赵则祥 周军 

机构地区：[1]School of Mechanical & Electronic Engineering,Zhongyuan University of Technology

出　　处：《Optoelectronics Letters》2011年第4期249-252,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.50974062);the National Science and Technology Major Projects of China (No.2009ZX04002-043-05);the Scientific Research Program of Department of Education of Henan Province of China (No.2008B520044);the Basic and Frontier Technology Research Program of Henan Province of China (No.082300410320)

摘　　要：Thin alloy films of palladium(Pd) and silver(Ag) are deposited onto glass substrates via the direct current(DC) magnetron technique.The hydrogen sensor probe consists of optical fiber bundle and Pd/Ag optical thin film.when the sensor is exposed to hydrogen,the refractive index of Pd/Ag optical thin layer will diminish and cause attenuation changes of the reflective light.It is observed that the thickness of Pd/Ag alloy layer can affect the hydrogen sensor signal.Under different substrate temperatures,several Pd/Ag samples are coated with different thicknesses of Pd/Ag alloy,and the results of a hydrogen sensor based on reflective light from the Pd/Ag alloy thin film are discussed.

关 键 词：Alloys Hydrogen Light reflection MAGNETRONS Optical fibers Refractive index Sensors Silver Silver alloys SUBSTRATES Thin films 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]