A high-sensitivity magnetic field sensor using spindly optical fiber taper

被引：7
|
作者：
Bai, Pengpeng [1 ]
Gao, Yan [1 ]
Zhang, Hongjuan [1 ]
Jin, Baoquan [2 ,3 ]
机构：
[1] Taiyuan Univ Technol, Coll Elect & Power Engn, Taiyuan 030024, Peoples R China
[2] Taiyuan Univ Technol, Coll Phys & Optoelect, Minist Educ, Taiyuan 030024, Peoples R China
[3] Taiyuan Univ Technol, Coll Phys & Optoelect, Shanxi Prov Key Lab Adv Transducers & Intelligent, Taiyuan 030024, Peoples R China
来源：
OPTICAL FIBER TECHNOLOGY | 2023年 / 78卷
关键词：
Fiber loop ring-down; Magnetic field measurement; Tapered fiber; Fiber optic sensor; SINGLE-MODE-FIBER; RING-DOWN SPECTROSCOPY;
D O I：
10.1016/j.yofte.2023.103332
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：
In this paper, a high-sensitivity magnetic field sensor is proposed. The sensor consists of a spindly optical fiber taper (SOFT) coated with magnetic fluid. The SOFT structure is made through fusing taper method and connected to a fiber loop for magnetic field sensing. The experiment results show that the sensor is barely dependent on laser wavelength within the range of 1520 nm to 1575 nm. When the magnetic field of 180 Oe is applied, the transmission change reaches up to 3.324 dB at 1550 nm. Additionally, the magnetic field sensitivity of the sensor is -23.4 mu s/Oe in the linear region of 10 Oe-80 Oe. Compared with the traditional fiber optic magnetic field sensor with the fiber loop ring-down (FLRD), the proposed SOFT sensor could achieve higher magnetic field sensitivity.
引用
收藏
页数：6
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