Detection of DC and low-frequency AC magnetic fields using an all single-mode fibre magnetometer

23 June 1983

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 19 (13) , 469-471
https://doi.org/10.1049/el:19830319

Abstract

A technique for the determination of weak DC and low-frequency AC magnetic fields using a single-mode-fibre magnetometer is described. The technique utilises the dependence between the AC responsitivity and bias field to detect small changes in the bias field. Detection sensitivities in the milli-gauss/metre region have been obtained using a bulk nickel magnetostrictive element with microgauss sensitivities predicted for certain types of metallic glass.

Keywords

DETECTION SENSITIVITY
METALLIC GLASS
BIAS FIELD
SINGLE-MODE FIBRE MAGNETOMETER
MICHELSON INTERFEROMETER
WEAK DC MAGNETIC FIELD MEASUREMENT
BULK NI MAGNETOSTRICTION ELEMENT
FIBRE OPTICS
LOW-FREQUENCY AC MAGNETIC FIELDS
AC RESPONSIVITY

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