Simple structure of tapered FBG filled with magnetic fluid to realize magnetic field sensor
| Autor: | Jianshuai Wang, Jingjing Zheng, Jing Li, Qi Zhao, Tigang Ning, Ji Wang, Li Pei, Zuliang Ruan, Xie Yuheng |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
business.industry Measure (physics) Physics::Optics Linearity Critical magnetic field Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Magnetic field Physics::Fluid Dynamics Optics Optical path Transmission (telecommunications) Control and Systems Engineering Sensitivity (control systems) Electrical and Electronic Engineering business Instrumentation Glass tube |
| Zdroj: | Optical Fiber Technology. 67:102698 |
| ISSN: | 1068-5200 |
| DOI: | 10.1016/j.yofte.2021.102698 |
| Popis: | A magnetic field sensor based on tapered FBG wrapped in magnetic fluid is proposed and experimented. The center of FBG is tapered to form a nanofiber, thereby enhancing the interaction between structure and magnetic fluid. The magnetic fluid's perception of the external magnetic field will affect the optical path of the nanofiber in the center of the tapered FBG, which is reflected in the transmission spectrum of the sensor. The manufacturing method is simpler and more sensitive to external changes. The experimental results show that the intensity change of the sensor has good linearity corresponding to magnetic flux density, and the sensitivity is 0.035 dB/mT. The sensor can also measure the magnetic field below the critical magnetic field. After packaging with a glass tube, the magnetic fluid has difference responses to different directions of the magnetic field. |
| Databáze: | OpenAIRE |
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