Long-period grating relative humidity sensor with hydrogel coating

被引：83

作者：

Liu, Yang ^{[1
]}

Wang, Liwei ^{[1
]}

Zhang, Min ^{[1
]}

Tu, Dongsheng ^{[1
]}

Mao, Xianhui ^{[1
]}

Liao, Yanbiao ^{[1
]}

机构：

[1] Tsing Hua Univ, Beijing 100084, Peoples R China

来源：

IEEE PHOTONICS TECHNOLOGY LETTERS | 2007年 / 19卷 / 9-12期

关键词：

hydrogel; long-period grating (LPG); optical fiber sensors; relative humidity (RH);

D O I：

10.1109/LPT.2007.897551

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：

The long-period grating (LPG) coated with the hydrogel was investigated for monitoring the relative humidity (RH) levels-the ratio of the amount of water vapor in the air at a specific temperature to the maximum amount that the air could hold at that temperature. The experimental results showed that the resonant wavelength of the hydrogel-coated LPG was shifted when the RH varied from 38.9% to 100%, with a linearity of 99.5% and an accuracy of +/- 2.3% RH.

引用

页码：880 / 882

页数：3

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