An Ultra-Sensitive Magnetic Field Sensor Based on Extrinsic Fiber-Optic Fabry-Perot Interferometer and Terfenol-D

被引：46

作者：

Zhang, Peng ^{[1
]}

Tang, Ming ^{[1
]}

Gao, Feng ^{[1
]}

Zhu, Benpeng ^{[2
]}

Fu, Songnian ^{[1
]}

Ouyang, Jun ^{[2
]}

Zhao, Zhiyong ^{[1
]}

Wei, Huifeng ^{[3
,4
]}

Li, Jinyan ^{[3
]}

Shum, Perry Ping ^{[5
,6
]}

Liu, Deming ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Natl Engn Lab Next Generat Internet Access Syst, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[3] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[4] Yangtze Opt Fiber & Cable Co Ltd, State Key Lab Opt Fiber & Cable Mfg Technol, R&D Ctr, Wuhan 430073, Peoples R China

[5] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr Opt Fibre Technol, Singapore 639798, Singapore

[6] 5CINTRA CNRS NTU Thales, Singapore 637553, Singapore

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2015年 / 33卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Fabry-Perot interferometers; magnetic sensors; magnetostriction; optical fiber sensors; STRAIN SENSOR; FEMTOSECOND LASER;

D O I：

10.1109/JLT.2015.2437615

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We report a fiber-optic magnetic field sensor with ultra-high sensitivity based on a precisely configured extrinsic fiber-optic Fabry-Perot interferometer (EFFPI) and Terfenol-D slab. The EFFPI was simply formed by placing two well-cleaved single-mode fibers with carefully designed spacing and it was bonded to the surface of a Terfenol-D slab by epoxy resin. The experiments demonstrate good linear relationship between the applied magnetic field strength and the wavelength shift up to 560 Oe and the measurement range is only limited by the available bandwidth of the light source. The maximal sensitivity of the magnetic field measured by the proposed sensor is 854.73 pm/Oe through monitoring the shift of wavelength dip of the spectrum reflected from the EFFPI, which is significantly larger than most of the reported results. We also evaluated the repeatability of the proposed sensor and the performance of the proposed sensor working at a direct-current (dc)-biasedmagnetic field. Results indicated that the proposed fiber-optic magnetic field sensor exhibits good restorable measurement performance up to 140 Oe and a preapplied dc magnetic field can be used to extend the linear measurement dynamic range.

引用

页码：3332 / 3337

页数：6

共 15 条

[1] Magnetic field sensor based on fiber Bragg grating with a spiral microgroove ablated by femtosecond laser [J].