基于涡旋光的光纤干涉型应力传感器  

Optical fiber interferometric stress sensor based on vortex light

作　　者：常会敏 傅海威[1] 王帅 尤涌涛 雍振[1] 李晓莉[1] CHANG Huimin;FU Haiwei;WANG Shuai;YOU Yongtao;YONG Zhen;LI Xiaoli(School of Science,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学理学院,西安710065

出　　处：《光通信技术》2022年第2期71-74,共4页Optical Communication Technology

基　　金：陕西省科学技术项目(No.2019GY-176)资助;西安石油大学研究生创新与实践能力培养项目(No.YCS20212132)资助。

摘　　要：为了进一步增大光纤应力传感的测量范围,设计了一种基于涡旋光束与平面波光束干涉的光纤马赫-曾德尔干涉型(MZI)应力传感器,提出一种新型应力解调模型。利用主成分分析法提取了叉状干涉图样集的主要特征,得到两光束间相位差与其对应干涉图样对于主要特征的相关系数之间的关系,并根据应力-相位差关系,进而得出了应力与相关系数之间的关系;搭建了基于涡旋光束与平面波光束干涉的应力传感实验系统,研究了系统的应力传感响应特性。实验结果表明:该传感器的应力响应灵敏度为0.25694 rad/MPa,最大应力测量量程为3392με。In order to further increase the measurement range of optical fiber stress sensor,an optical fiber Mach-Zehnder interference(MZI) stress sensor based on the interference of vortex beam and plane wave beam is designed,and a new stress demodulation model is proposed.The principal component analysis method is used to extract the main features of the fork interference pattern set,and the relationship between the phase difference between the two beams and the correlation coefficient of the corresponding interference pattern for the main features is obtained.According to the stress phase difference relationship,the relationship between the stress and the correlation coefficient is obtained,a stress sensing experimental system based on the interference between vortex beam and plane wave beam is built,and the stress sensing response characteristics of the system are studied.The experimental results show that the stress response sensitivity of the sensor is 0.25694 rad/MPa,and the maximum stress measurement range is 3392 με.

关 键 词：涡旋光束 平面波光束 叉形图 主成分分析法 马赫-曾德尔干涉 

分 类 号：TH744[机械工程—光学工程]