Low-Cost Magneto-Optic Sensor Based on Tapered Fiber and Distributed Sensing Concept

Farhad Akhoundi; Robert A. Norwood; N. Peyghambarian

doi:10.1109/LPT.2019.2912744

Low-Cost Magneto-Optic Sensor Based on Tapered Fiber and Distributed Sensing Concept

Farhad Akhoundi, Robert A. Norwood, N. Peyghambarian

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this letter, we present a magnetic field sensor with a noise equivalent field of 500 nT based on a tapered fiber in a magnetic fluid (Fe₃O₄ nanoparticles dispersed in the deionized water). This sensitivity, which is three orders of magnitude better than the previously demonstrated tapered sensors, is achieved by biasing the fluid material with a ≈1-mT magnetic field. In addition, application of an optical modulator and an auto-balanced synchronized detector increased the sensor output signal-to-noise ratio significantly. Furthermore, a novel method is presented to employ the proposed sensor in a distributed scheme.

Original language	English (US)
Article number	8695121
Pages (from-to)	901-904
Number of pages	4
Journal	IEEE Photonics Technology Letters
Volume	31
Issue number	11
DOIs	https://doi.org/10.1109/LPT.2019.2912744
State	Published - Jun 1 2019

Keywords

Faraday effect
Optical sensing and sensors
fiber optics components
magneto-optic systems
tapered fiber

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

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10.1109/LPT.2019.2912744

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title = "Low-Cost Magneto-Optic Sensor Based on Tapered Fiber and Distributed Sensing Concept",

abstract = "In this letter, we present a magnetic field sensor with a noise equivalent field of 500 nT based on a tapered fiber in a magnetic fluid (Fe3O4 nanoparticles dispersed in the deionized water). This sensitivity, which is three orders of magnitude better than the previously demonstrated tapered sensors, is achieved by biasing the fluid material with a ≈1-mT magnetic field. In addition, application of an optical modulator and an auto-balanced synchronized detector increased the sensor output signal-to-noise ratio significantly. Furthermore, a novel method is presented to employ the proposed sensor in a distributed scheme.",

keywords = "Faraday effect, Optical sensing and sensors, fiber optics components, magneto-optic systems, tapered fiber",

author = "Farhad Akhoundi and Norwood, {Robert A.} and N. Peyghambarian",

note = "Funding Information: Manuscript received March 13, 2019; revised April 18, 2019; accepted April 19, 2019. Date of publication April 22, 2019; date of current version May 15, 2019. This work was supported by the State of Arizona{\textquoteright}s Technology and Research Initiative Fund (TRIF). (Corresponding author: Farhad Akhoundi.) The authors are with the College of Optical Sciences, The University of Arizona, Tucson, AZ 85721 USA (e-mail: akhoundi@optics.arizona.edu; rnorwood@optics.arizona.edu; nasser@optics.arizona.edu). Publisher Copyright: {\textcopyright} 1989-2012 IEEE.",

year = "2019",

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doi = "10.1109/LPT.2019.2912744",

language = "English (US)",

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AU - Akhoundi, Farhad

AU - Norwood, Robert A.

AU - Peyghambarian, N.

N1 - Funding Information: Manuscript received March 13, 2019; revised April 18, 2019; accepted April 19, 2019. Date of publication April 22, 2019; date of current version May 15, 2019. This work was supported by the State of Arizona’s Technology and Research Initiative Fund (TRIF). (Corresponding author: Farhad Akhoundi.) The authors are with the College of Optical Sciences, The University of Arizona, Tucson, AZ 85721 USA (e-mail: akhoundi@optics.arizona.edu; rnorwood@optics.arizona.edu; nasser@optics.arizona.edu). Publisher Copyright: © 1989-2012 IEEE.

PY - 2019/6/1

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N2 - In this letter, we present a magnetic field sensor with a noise equivalent field of 500 nT based on a tapered fiber in a magnetic fluid (Fe3O4 nanoparticles dispersed in the deionized water). This sensitivity, which is three orders of magnitude better than the previously demonstrated tapered sensors, is achieved by biasing the fluid material with a ≈1-mT magnetic field. In addition, application of an optical modulator and an auto-balanced synchronized detector increased the sensor output signal-to-noise ratio significantly. Furthermore, a novel method is presented to employ the proposed sensor in a distributed scheme.

AB - In this letter, we present a magnetic field sensor with a noise equivalent field of 500 nT based on a tapered fiber in a magnetic fluid (Fe3O4 nanoparticles dispersed in the deionized water). This sensitivity, which is three orders of magnitude better than the previously demonstrated tapered sensors, is achieved by biasing the fluid material with a ≈1-mT magnetic field. In addition, application of an optical modulator and an auto-balanced synchronized detector increased the sensor output signal-to-noise ratio significantly. Furthermore, a novel method is presented to employ the proposed sensor in a distributed scheme.

KW - Faraday effect

KW - Optical sensing and sensors

KW - fiber optics components

KW - magneto-optic systems

KW - tapered fiber

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Low-Cost Magneto-Optic Sensor Based on Tapered Fiber and Distributed Sensing Concept

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