基于MF与带状双芯光纤磁场测量研究  

Study of magnetic field measurement based on MF and ribbon twin-core optical fiber

作　　者：侯元萌 葛海波 张杰 HOU Yuanmeng;GE Haibo;ZHANG Jie(School of Electronic Engineering,University of Xi'an Posts and Telecommunications,Xi'an 710061,China)

机构地区：[1]西安邮电大学电子工程学院,西安710061

出　　处：《光通信技术》2020年第3期27-30,共4页Optical Communication Technology

基　　金：陕西省教育厅自然科学研究基金项目(2011JM8038)资助。

摘　　要：为降低温度对基于磁流体(MF)和长周期光纤光栅(LPFG)磁场测量系统中测量结果造成的误差,提出一种基于MF和带状双芯光纤的磁场测量校正方案。在带状双芯光纤内集成包层热光系数不同的LPFG,利用其温度灵敏度之间的差异实现对磁场测量结果的校正。通过理论分析与系统仿真,论证了MF与LPFG的温度特性,揭示了一定温度变化范围内MF折射率与LPFG谐振波长之间的关系,与未进行温度补偿的系统相比,所提传感方案的磁场强度精度至少提高79.1%。In order to reduce the error caused by temperature in the magnetic field measurement system based on magnetic fluid(MF)and long period fiber grating(LPFG),a magnetic field measurement correction scheme based on MF and banded twin-core optical fiber is proposed.The LPFG with different cladding thermo-optic coefficients is integrated in the ribbon twin-core optical fiber,and the difference between the temperature sensitivity is used to correct the magnetic field measuring results.Through theoretical analysis and system simulation,the temperature characteristics of MF and LPFG are demonstrated,and the relationship between MF refractive index and LPFG resonant wavelength in a certain temperature range is revealed.Compared with the system without temperature compensation,the proposed scheme's intensity to accuracy is increased by at least 79.1%.

关 键 词：长周期光纤光栅 磁流体 有效热光系数 温度补偿 

分 类 号：TN914[电子电信—通信与信息系统]