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温度不敏感双布拉格光纤光栅化学浓度传感器的研究

发表时间:2009-02-15  浏览量:2086  下载量:950
全部作者: 赵德新,王葵如,张锦龙,孟照方
作者单位: 光通信与光波技术教育部重点实验室,北京邮电大学光通信与光电子学研究院;河南大学物理与电子学院
摘 要: 阐述了长周期光纤光栅(long-period fiber grating, LPFG)和布拉格光纤光栅(fiber Bragg grating,FBG)化学浓度传感器的结构与传感原理,分别研究了基于LPFG和FBG的传感器在化学溶液浓度测量中消除温度敏感对传感影响的机理,并通过实验进行了验证。分析了两种化学浓度传感器的灵敏度,其中在实验室研制的FBG化学浓度传感器通过测量布拉格光栅的双峰偏移间距来实现传感,其灵敏度可达到蔗糖溶液浓度每1%的变化,反射波长移动0.096 nm.
关 键 词: 光谱学;长周期光纤光栅;布拉格光纤光栅;双布拉格光纤光栅;温度不敏感
Title: The research on temperature-insensitive chemical concentration sensor based on twin Bragg fiber grating
Author: ZHAO Dexin, WANG Kuiru, ZHANG Jinlong, MENG Zhaofang
Organization: Key Laboratory of Optical Communication and Lightwave Technologies of Ministry of Education, Institute of Optical Communication and Optoelectronics, Beijing University of Posts and Telecommunications; School of Physics and Electronics, Henan University
Abstract: The structure and sensing mechanism of long-period fiber grating (LPFG) and fiber Bragg grating (FBG) chemical sensor are introduced. The influence of reducing temperature sensitivity of LPFG and FBG chemical sensor is focused on and experimentally investigated, respectively. The temperature-insensitive LPFG and FBG chemical sensors in concentration measurement of chemical solutions are analysed. One method based on twin Bragg fiber grating is designed by measuring the peak wavelength difference between FBG, which has the sensitivity of 0.096 nm for changing 1% concentration of sugar solutions.
Key words: spectroscopy; long-period fiber grating; fiber Bragg grating; twin Bragg fiber grating; temperature-insensitive
发表期数: 2009年2月第3期
引用格式: 赵德新,王葵如,张锦龙,等. 温度不敏感双布拉格光纤光栅化学浓度传感器的研究[J]. 中国科技论文在线精品论文,2009,2(3):229-234.
 
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