Optical fiber hydrogen sensors with Pd/WO3 composite thin film by magntron co-sputtering

被引：0
|
作者：
Yang, Minghong [1 ]
Sun, Yan [1 ]
Zhang, Dongsheng [1 ]
Jiang, Desheng [1 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Lab Opt Fiber Sensors, Wuhan 430070, Peoples R China
来源：
2009 SYMPOSIUM ON PHOTONICS AND OPTOELECTRONICS (SOPO 2009) | 2009年
关键词：
hydrogen sensor; optical fiber; Pd/WO(3); evanescent field;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A fiber-optic hydrogen gas sensor using composite palladium and tungsten trioxide (WO(3)) was proposed and characterized. This sensor utilizes the absorption of the evanescent field interaction in the clad of Pd/WO(3) thin film which was prepared by magnetron co-sputtering process, coated on a silica core. Modulation of optical power intensity is observed, a clear increase of power with hydrogen and decrease of power without hydrogen can be concluded. Compared to pure Pd sensitive material, an improvement of response time is reported. Meanwhile, there is no recovery in nitrogen environment, and recovery happens only in oxygen-existing condition. It is suspected that the recovery process is connected to oxidation of the Pd/WO(3) surface.
引用
收藏
页码：374 / 376
页数：3
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