Fiber optic Bragg grating sensor based on hydrogels for measuring salinity

被引：117

作者：

Cong, J

Zhang, XM ^{[1
]}

Chen, KS

Xu, J

机构：

[1] Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Peoples R China

[2] Chinese Acad Sci, Polymer Phys Lab, Ctr Mol Sci, Inst Chem, Beijing 100080, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2002年 / 87卷 / 03期

基金：

中国国家自然科学基金;

关键词：

optical sensor; fiber Bragg grating; hydrogel; sanility;

D O I：

10.1016/S0925-4005(02)00289-7

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

We report a new type of optical salinity sensor with a fiber Bragg grating (FBG) coated with hydrogels. The sensing mechanism in this device is based on mechanical stress that is induced in the chemically sensitive water swellable polymers (hydrogels) coating when the water escapes from it. The stress in the hydrogels coating stretches and shifts the Bragg wavelength of the FBG. Varying the composition of the gel, the sensor can be used to response to different trigger stimulus. Here the sensors for measuring salinity are demonstrated. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：487 / 490

页数：4

共 11 条

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