Temperature-Insensitive Ferrofluid-Clad Microfiber Bragg Grating for Magnetic Field Sensing
Haimei Luo,
Yangyang Liu,
Liyuan Nie,
Zeng Wang,
Xiaoyong Gao,
Yifan Wang,
Jiajia Zhao,
Guiqiang Liu,
Shaoyi Xu
Affiliations
Haimei Luo
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Yangyang Liu
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Liyuan Nie
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Zeng Wang
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Xiaoyong Gao
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Yifan Wang
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Jiajia Zhao
School of Computer and Communication Engineering, Changsha University of Science and Technology, Changsha 410114, China
Guiqiang Liu
Key Laboratory of Optoelectronics and Telecommunication of Jiangxi Province, Department of Photoelectric Information Science and Engineering, Jiangxi Normal University, Nanchang 330022, China
Shaoyi Xu
School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China
In this paper, a temperature-insensitive ferrofluid (FF)-clad microfiber Bragg Grating (MF-BG) magnetic field sensor is proposed. Through optimizing the diameter of MF-BG, we can effectively suppress its thermal property. The experimental research results show that when the diameter of MF-BG is ~2.94 μm, its reflection spectrum shift owing to ambient temperature change can be substantially small within the range of 20–80 °C. The thermal stable sensor has a magnetic field sensitivity of 0.667 pm/Gs with a linearity of more than 0.985 at 20 °C.
