Single-mode fibre-optic magnetometer with DC bias field stabilization
- 1 August 1985
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Journal of Lightwave Technology
- Vol. 3 (4) , 836-840
- https://doi.org/10.1109/jlt.1985.1074285
Abstract
A sensitive dc field magnetometer, based on magnetostrictive straining of optical fibers is demonstrated, which utilizes active bias field stabilization to ensure that the magnetostrictive sensing element is maintained in a state of zero magnetization. This technique eliminates any problems arising due to magnetic hysteresis effects of the magnetostrictive material which affect the magnetometer output when operated in a conventional 'open-loop' mode. Detection sensitivities of the order of8 \times 10^{-5}A . m-1(\sim10^{-16}Oe), and a linear dynamic range of 105are demonstrated.Keywords
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