摘要
基于Terfenol-D磁致伸缩材料和光纤光栅法布里珀罗腔,提出了一种用于微弱静态磁场测量的光纤磁场传感器.为了提高传感器的分辨率,采用钕铁硼永磁体提供偏置磁场,同时,采用Monel-400合金与光纤光栅法布里珀罗腔耦合的方式,作为参考元件,对传感器进行温度补偿.实验测得传感器的磁场灵敏度为1.7×10^(-3) pm/μT,磁场分辨率为3.0μT。实验结果表明,本传感器对于静态磁场响应具有良好的线性度和指向性,可用于微弱磁场测量.
A fiber optic magnetic sensor for the measurement of weak static magnetic field,based on Terfenol-D materials and Fiber Bragg Grating Fabry-Perot（FBG-FP）cavity,is proposed and demonstrated.In order to improve the sensitivity of the sensor,a NdFeB magnet is used to apply bias magnetic field.To compensate the environmental temperature,another FBG-FP coupled with Monel-400 is used as a reference.The measurement sensitivity of the sensor is 1.7×10^（-3）pm/μT,which results in a magnetic induction resolution of 3.0μT.The experimental results show that the sensor exhibits excellent linearity and directivity in response to static magnetic field.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2018年第3期194-200,共7页
Acta Photonica Sinica
基金
The Youth Innovation Promotion Association of CAS(No.2016106)
Key R&D Program of China(No.2017YFB0405503)
关键词
光纤传感器
光纤布喇格光栅
光纤光栅法布里珀罗腔
磁致伸缩材料
磁场
温度
Fiber optic sensors
Fiber Bragg grating
Fiber Bragg grating Fabry-Perot cavity
Magnetostrictive material
Magnetic field
Temperature
