基于复合结构级联的双点折射率光纤传感器研究  

Dual-Point Refractive Index Optical Fiber Sensor Based on Composite Structure

作　　者：赵军发[1,2] 林美汐 王潇 刘昶 张诚 闫淑霞[1,2] Zhao Junfa;Lin Meixi;Wang Xiao;Liu Chang;Zhang Cheng;Yan Shuxia(School of Electronics and Information Engineering,Tiangong University,Tianjin 300387,China;Tianjin Key Laboratory of Optoelectronic Detection Technology and Systems,Tianjin 300387,China)

机构地区：[1]天津工业大学电子与信息工程学院,天津300387 [2]天津市光电检测技术与系统重点实验室,天津300387

出　　处：《南开大学学报（自然科学版）》2024年第4期50-55,共6页Journal of Nankai University(Natural Sience)

基　　金：天津市教委科研项目(2017KJ088)。

摘　　要：设计了一种基于气球型光纤环和光纤布拉格光栅(FBG)级联的双点折射率光纤传感器.利用布拉格光栅进行温度补偿,消除了温度对折射率测量的影响.将两个独立的干涉结构进行级联,实现基于波分复用的双点传感测量.该传感器在1.333 0-1.388 3的环境折射率范围内,两个测量点的折射率灵敏度分别为126.326nm/RIU和141.109 nm/RIU.该传感器具有制作简单、成本低、结构体积小等优点.A dual-point refractive index fiber sensor based on fiber balloon ring cascaded with fiber Bragg grating(FBG)is proposed and demonstrated experimentally.The FBG is used for temperature compensation to eliminate the influence of temperature on refractive index measurement.Two independent interference structures are cascaded to realize dual-point sensing measurement based on wavelength division multiplexing.The refractive index sensitivity of the two measuring points is 126.326 nm/RIU and 141.109 nm/RIU,respectively.The sensor has the advantages of simple manufacture,low cost and small volume.

关 键 词：折射率 光纤传感器 气球型光纤环 布拉格光栅 

分 类 号：TN253[电子电信—物理电子学]