基于法布里-珀罗干涉的光纤倾角传感技术研究  

Research on fiber optic inclination sensing technology based on Fabry-Perot interference

作　　者：王帅[1,2] 吴越 宋言明[1,2] 李红[1,2] 孟凡勇[1,2] 祝连庆[1,2] WANG Shuai;WU Yue;SONG Yan-ming;LI Hong;MENG Fan-yong;ZHU Lian-qing(Key Laboratory of Optoelectronic Testing Technology and Instrument,Ministry of Education,Beijing University of Information Science and Technology,Beijing 100192,China;Beijing Laboratory of Optical Fiber Sensing and System,Beijing University of Information Science and Technology,Beijing 100016,China)

机构地区：[1]北京信息科技大学光电测试技术及仪器教育部重点实验室,北京100192 [2]北京信息科技大学光纤传感与系统北京实验室,北京100016

出　　处：《激光与红外》2021年第11期1492-1497,共6页Laser & Infrared

基　　金：国家自然科学基金重点项目(No.51535002);高等学校学科创新引智计划资助(No.D17021);北京信息科技大学师资补充与支持计划(2019-2021)(No.5029011103);生物医学检测技术及仪器北京实验室纵向课题(No.Z2019041)资助。

摘　　要：提出一种基于法布里—珀罗(Fabry-Perot,F-P)干涉的光纤倾角传感器,该传感器由单模光纤和毛细管组成。首先,分析光纤干涉原理和倾角传感原理;然后,制作封装光纤倾角传感器;最后,完成光纤F-P传感器倾斜实验,通过对采集得到的数据分析得到传感器倾角的响应特性,并进行温度实验探究温度对传感器波长漂移的影响。实验结果表明:在0°~10°测量范围内,测量角度和反射波长呈线性关系,倾角灵敏度为0.2031 nm/°,线性度为0.99707;在45~49℃温度范围内,温度灵敏度为4.777 nm/℃,线性度为0.99934。该传感器具有结构简单、成本低、灵敏度高等特点,具有广阔的应用前景。A fiber optic tilt sensor based on Fabry-Perot(F-P)interference is proposed.The sensor is composed of single-mode fiber and capillary.Firstly,we analyzed the principles of optical fiber interference and tilt sensor;then,made a packaged optical fiber tilt sensor and completed the tilt experiment of the optical fiber F-P sensor finally.Through the analysis of the collected data,we obtained the response characteristics of the sensor tilt angle,and explored the influence of temperature on the wavelength shift of the sensor by the temperature experiment.The experimental results shows that there is a linear relationship between the measurement angle and the reflected wavelength in the range of 0°~10°,with the dip sensitivity of 0.2031 nm/°,and the linearity of 0.99707.When the temperature sensitivity is 4.777 nm/℃,the linearity is 0.99934 in the range of 45℃to 49℃.The sensor is of simple structure,low cost and high sensitivity characteristics,and has a broad application prospect.

关 键 词：光纤传感器 法布里—珀罗干涉 光纤倾角传感 光纤温度传感 

分 类 号：TN253[电子电信—物理电子学] TP212.44[自动化与计算机技术—检测技术与自动化装置]