Abstract
A compact optic-fiber vector magnetometer is proposed and experimentally demonstrated, which is based on an excessively tilted fiber grating (Ex-TFG) assistant with the magnetic fluid (MF). Without any complicated processing, the cladding mode resonances of the bare Ex-TFG packaged by the MF show high sensitivity to slight perturbations by the magnetic field. Due to the excellent magneto-optical properties of the MF and the azimuth-dependent refractive index sensitivity of the Ex-TFG, such a magnetometer can achieve the magnetic field intensity sensitivity of 2.45 nm/mT and the orientation sensitivity of 0.41 nm/ deg. In addition, based on the spectral interrogation, the detection limit of the magnetic field intensity could reach around 8.1 μT at the minimum wavelength measurement accuracy of 0.02 nm.
| Original language | English |
|---|---|
| Pages (from-to) | 2494-2497 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 44 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 10 May 2019 |
Bibliographical note
This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: https://www.osapublishing.org/ol/abstract.cfm?uri=ol-44-10-2494. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.Funding
Funding. National Natural Science Foundation of China (NSFC) (61505244, 61605239); Fundamental Research Funds for the Central Universities; Huazhong University of Science and Technology (HUST) (2017KFYXJJ033); Science Fund for Creative Research Groups of the Natural Science Foundation of Hubei Province (2018CFA004); Major Projects of Technical Innovation of Hubei (2018AAA040).
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