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
收藏
页码：880 / 882
页数：3
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