PH Sensor using Fiber Bragg Grating based on Swelling of Hydrogel

被引：0
|
作者：
Lei, Xiaohua [1 ,2 ]
Dong, Bo [2 ]
Gong, Jianmin [2 ]
Wang, Anbo [2 ]
Chen, Weimin [1 ]
机构：
[1] Chongqing Univ, Minist Educ China, Key Lab Optoelect Technol & Syst, Chongqing 400044, Peoples R China
[2] Virginia Polytech Inst & State Univ, Ctr Photon Technol, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA
来源：
ADVANCED SENSOR SYSTEMS AND APPLICATIONS V | 2012年 / 8561卷
关键词：
pH sensor; Fiber Bragg Grating; hydrogel;
D O I：
10.1117/12.999513
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：
To achieve pH detection of multi-points, a new pH sensor based on pH sensitive hydrogel swelling detection by a fiber Bragg grating is proposed. The deflection of a silica membrane due to pH value change induced hydrogel swelling is measured by the center wavelength shifts of a fiber Bragg grating epoxied on the membrane. The relation between center wavelength shifts of the fiber Bragg grating with the hydrogel swelling behavior was studied experimentally. Around 100pm shift of the fiber Bragg grating center wavelength was observed when the pH value was changed from 4 to 7 or from 7 to 10 by using pH standard solutions, which fundamentally proved the feasibility of this method for pH detection.
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页数：6
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