ORCID Profile
0000-0002-2901-7434
Current Organisation
Northumbria University
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Publisher: SPIE
Date: 03-07-2009
DOI: 10.1117/12.831418
Publisher: SPIE
Date: 23-04-2017
DOI: 10.1117/12.2263678
Publisher: Springer Science and Business Media LLC
Date: 05-07-2017
DOI: 10.1038/S41598-017-05199-Y
Abstract: This paper proposes a novel magnetic field sensor based on a microfiber coupler (MFC) combined with a magnetic fluid (MF) in a Sagnac loop formed from a polarization maintaining fiber (PMF). Thanks to the small (~2.6 μ m) waist diameter of the MFC, the resulting interference is strongly influenced by the presence of the MF and this leads to the desirable high sensitivity of the structure to the applied magnetic field. The maximum magnetic field sensitivities of −100 pm/mT and −488 pm/mT have been experimentally demonstrated with the PMF lengths of 75 cm and 20 cm respectively in the range of magnetic field strengths from 0 to 200 mT. The dependence of the magnetic field orientation on the performance of the proposed sensor was also examined. The proposed magnetic field sensor is advantageous for applications requiring higher sensitivity over a wide magnetic field range.
Publisher: Elsevier BV
Date: 02-2014
Publisher: The Optical Society
Date: 18-03-2019
DOI: 10.1364/AO.58.002334
Publisher: The Optical Society
Date: 07-10-2010
DOI: 10.1364/AO.49.005626
Publisher: MDPI AG
Date: 21-11-2019
DOI: 10.3390/S19235100
Abstract: In this paper we propose and investigate a novel magnetic field sensor based on a Tri-microfiber coupler combined with magnetic fluid and a fiber Bragg grating (FBG) in a ring. A sensitivity of 1306 pm/mT was experimentally demonstrated in the range of magnetic fields from 0 to 15 mT. The reflection peak in the output spectrum associated with the FBG serves as a reference point allowing to avoid ambiguity in determining the spectral shift induced by the magnetic field. Due to its high sensitivity at low magnetic fields, the proposed structure could be of high interest in low field biosensing applications that involve a magnetic field, such as magnetic manipulation or separation of biomolecules.
Publisher: Elsevier BV
Date: 09-2010
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 05-2018
Publisher: Elsevier BV
Date: 08-2023
Publisher: The Optical Society
Date: 13-11-2014
DOI: 10.1364/OL.39.006521
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 03-2021
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 04-2014
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Date: 12-2014
Publisher: Springer Science and Business Media LLC
Date: 16-03-2013
Location: United Kingdom of Great Britain and Northern Ireland
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Qiang Wu.