Passive, multiplexable measurement of magnetic field strength and temperature using PM fibre bragg gratings and chiral fibre devices

Philip Orr, Pawel Niewczas

Research output: Contribution to journalConference Contribution

1 Citation (Scopus)

Abstract

We present a solution to the simultaneous intrinsic point sensing of bi-directional magnetic field strength and temperature. Using a passive, retroactive method for polarisation selection based on a local chiral fibre device, a series of dual-wavelength fibre Bragg gratings written in polarisation-maintaining fibre may be interrogated for both measurands over long distance using linearly polarised light. Through simulation we identify and evaluate sources of error in the scheme in order to find the design that yields the optimal sensitivity and noise level, which for the multiplexing interferometric interrogator are 3.0 μrad/mT and 22 mT rms respectively at a rate of up to 10 kHz.

Fingerprint

Polarization-maintaining fiber
Fiber Grating
Fiber Bragg gratings
Bragg Grating
Light polarization
Multiplexing
Bragg gratings
field strength
Polarization
Magnetic Field
Fiber
Magnetic fields
Wavelength
fibers
Fibers
magnetic fields
Sensing
Linearly
polarization
multiplexing

Keywords

  • simultaneous intrinsic point sensing
  • bi-directional magnetic field strength
  • polarisation
  • dual-wavelength fibre Bragg
  • linearly polarised light

Cite this

@article{b5a406c931ae48e795d9a0e9ed696e18,
title = "Passive, multiplexable measurement of magnetic field strength and temperature using PM fibre bragg gratings and chiral fibre devices",
abstract = "We present a solution to the simultaneous intrinsic point sensing of bi-directional magnetic field strength and temperature. Using a passive, retroactive method for polarisation selection based on a local chiral fibre device, a series of dual-wavelength fibre Bragg gratings written in polarisation-maintaining fibre may be interrogated for both measurands over long distance using linearly polarised light. Through simulation we identify and evaluate sources of error in the scheme in order to find the design that yields the optimal sensitivity and noise level, which for the multiplexing interferometric interrogator are 3.0 μrad/mT and 22 mT rms respectively at a rate of up to 10 kHz.",
keywords = "simultaneous intrinsic point sensing, bi-directional magnetic field strength, polarisation, dual-wavelength fibre Bragg , linearly polarised light",
author = "Philip Orr and Pawel Niewczas",
year = "2009",
month = "10",
doi = "10.1117/12.834173",
language = "English",
volume = "7503",
pages = "75032T",
journal = "Proceedings of SPIE",
issn = "0277-786X",

}

TY - JOUR

T1 - Passive, multiplexable measurement of magnetic field strength and temperature using PM fibre bragg gratings and chiral fibre devices

AU - Orr, Philip

AU - Niewczas, Pawel

PY - 2009/10

Y1 - 2009/10

N2 - We present a solution to the simultaneous intrinsic point sensing of bi-directional magnetic field strength and temperature. Using a passive, retroactive method for polarisation selection based on a local chiral fibre device, a series of dual-wavelength fibre Bragg gratings written in polarisation-maintaining fibre may be interrogated for both measurands over long distance using linearly polarised light. Through simulation we identify and evaluate sources of error in the scheme in order to find the design that yields the optimal sensitivity and noise level, which for the multiplexing interferometric interrogator are 3.0 μrad/mT and 22 mT rms respectively at a rate of up to 10 kHz.

AB - We present a solution to the simultaneous intrinsic point sensing of bi-directional magnetic field strength and temperature. Using a passive, retroactive method for polarisation selection based on a local chiral fibre device, a series of dual-wavelength fibre Bragg gratings written in polarisation-maintaining fibre may be interrogated for both measurands over long distance using linearly polarised light. Through simulation we identify and evaluate sources of error in the scheme in order to find the design that yields the optimal sensitivity and noise level, which for the multiplexing interferometric interrogator are 3.0 μrad/mT and 22 mT rms respectively at a rate of up to 10 kHz.

KW - simultaneous intrinsic point sensing

KW - bi-directional magnetic field strength

KW - polarisation

KW - dual-wavelength fibre Bragg

KW - linearly polarised light

UR - http://dx.doi.org/10.1117/12.834173

U2 - 10.1117/12.834173

DO - 10.1117/12.834173

M3 - Conference Contribution

VL - 7503

SP - 75032T

JO - Proceedings of SPIE

T2 - Proceedings of SPIE

JF - Proceedings of SPIE

SN - 0277-786X

ER -