HUMIDITY FIBER SENSORS BASED ON SUPERSTRUCTURE FIBER BRAGG GRATINGS COATED WITH POROUS SOL-GEL

被引:3
|
作者
Ai, Lung [1 ]
Liu, Wen-Fung [2 ]
Fu, Ming-Yue [3 ]
Chen, Tzu-Chiang [1 ]
机构
[1] Natl Def Univ, Chung Cheng Inst Technol, Dept Elect Engn, Tao Yuan 335, Taiwan
[2] Feng Chia Univ, Dept Elect Engn, Taichung 407, Taiwan
[3] AF Acad, Dept Avion Engn, Kaohsiung 820, Taiwan
关键词
fiber sensors; superstructure fiber Bragg grating; sol-gel; humidity;
D O I
10.1002/mop.23973
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 sensor based on an etched superstructure fiber Bragg grating coated with the thin film of sol gel is used for measuring the relative humidity. The operation mechanism of this sensor is based on that sol-gel materials can react with H2O molecules to result in its reflective index change and then to cause both Bragg wavelength shaft. The diameter of the superstructure fiber Bragg grating is etched down to 20 mu m for obtaining the sensitivity of 0.014 nm/1%RH. (C) 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 40-42, 2009 Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23973
引用
收藏
页码:40 / 42
页数:3
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