Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop

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 μm) waist diameter of the MFC, the resulting interference is strongly infl...

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Main Authors:	Fangfang Wei, Arun Kumar Mallik, Dejun Liu, Qiang Wu, Gang-Ding Peng, Gerald Farrell, Yuliya Semenova
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/f4ae5800d1584f77b3567105487a4e65
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spelling	oai:doaj.org-article:f4ae5800d1584f77b3567105487a4e652021-12-02T16:08:09ZMagnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop10.1038/s41598-017-05199-y2045-2322https://doaj.org/article/f4ae5800d1584f77b3567105487a4e652017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05199-yhttps://doaj.org/toc/2045-2322Abstract 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 μm) 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.Fangfang WeiArun Kumar MallikDejun LiuQiang WuGang-Ding PengGerald FarrellYuliya SemenovaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-9 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fangfang Wei Arun Kumar Mallik Dejun Liu Qiang Wu Gang-Ding Peng Gerald Farrell Yuliya Semenova Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
description	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 μm) 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.
format	article
author	Fangfang Wei Arun Kumar Mallik Dejun Liu Qiang Wu Gang-Ding Peng Gerald Farrell Yuliya Semenova
author_facet	Fangfang Wei Arun Kumar Mallik Dejun Liu Qiang Wu Gang-Ding Peng Gerald Farrell Yuliya Semenova
author_sort	Fangfang Wei
title	Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
title_short	Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
title_full	Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
title_fullStr	Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
title_full_unstemmed	Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop
title_sort	magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a sagnac loop
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f4ae5800d1584f77b3567105487a4e65
work_keys_str_mv	AT fangfangwei magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT arunkumarmallik magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT dejunliu magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT qiangwu magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT gangdingpeng magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT geraldfarrell magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop AT yuliyasemenova magneticfieldsensorbasedonacombinationofamicrofibercouplercoveredwithmagneticfluidandasagnacloop
_version_	1718384631318839296

Magnetic field sensor based on a combination of a microfiber coupler covered with magnetic fluid and a Sagnac loop

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