中国光学Issue(3)：476-482,7.DOI:10.3788/CO.20140703.0476
可同时测量蔗糖浓度和温度的组合光纤光栅传感器
Simultaneous measurement of temperature and concentration of sugar solution based on hybrid fiber grating sensor
摘要
Abstract
In order to accurately measure temperature and concentration of sugar solution at the same time , we presented a hybrid fiber grating sensor .Firstly, based on mode coupling theory , hybrid fiber gratings were formed using fiber Bragg grating and long-period fiber grating , which could realize dual-parameters measure-ment .In this hybrid fiber grating , FBG response to temperature measurement , while LPFG response to simula-taneous measurement of sugar solution concentration and temperature .Then, in two linear refractive index ran-ges, that is, from 1.33 to 1.42 and from 1.42 to 1.44, we calibrated correlation coefficient of temperature and sugar concentration .Finally , two sensitivity coefficient matrixes were constituted to discuss the method of measuring temperature and sugar solution concentration simultaneously .Experimental results indicate that the measuring sensitivity of temperature reaches 117.9 pm/K, and sugar solution concentration reaches –213.5 pm/RIU.Therefore, the modular fiber grating sensor has high sensitivity property as the photochemical sen-sor .关键词
光纤光栅传感器/模式耦合理论/双参数测量Key words
fiber gratingsensing/mode coupling theory/dual parameter measurement分类
信息技术与安全科学引用本文复制引用
赵明富,王念,罗彬彬,施玉佳,曹李华..可同时测量蔗糖浓度和温度的组合光纤光栅传感器[J].中国光学,2014,(3):476-482,7.基金项目
国家自然科学基金资助项目 （）
