DocumentCode
1178339
Title
Detection of low-frequency magnetic signals in a magnetostrictive fiber-optic sensor with suppressed residual signal
Author
Dagenais, D.M. ; Bucholtz, F. ; Koo, K.P. ; Dandridge, A.
Author_Institution
Sachs Freeman Associates, Landover, MD, USA
Volume
7
Issue
6
fYear
1989
fDate
6/1/1989 12:00:00 AM
Firstpage
881
Lastpage
887
Abstract
A correlation is presented between experimental data obtained under various operating conditions and a modified coherent rotation model which predicts the behavior of the residual signal and the sideband noise. The authors identify an operating regime that eliminates the residual signal and gives rise to a reduction in noise levels by a factor of five over previously reported results. Minimum detectable fields of 11±2pT/√Hz at 1 Hz and 38±8 pT/√Hz at 0.2 Hz are achieved
Keywords
fibre optic sensors; interference suppression; magnetic field measurement; magnetostrictive devices; coherent rotation model; low-frequency magnetic signals; magnetic signal detection; magnetostrictive fiber-optic sensor; noise level reduction; operating regime; sideband noise; suppressed residual signal; Amorphous magnetic materials; Frequency; Glass; Low-frequency noise; Magnetic field induced strain; Magnetic noise; Magnetic sensors; Magnetostriction; Optical fiber sensors; Optical fibers;
fLanguage
English
Journal_Title
Lightwave Technology, Journal of
Publisher
ieee
ISSN
0733-8724
Type
jour
DOI
10.1109/50.32353
Filename
32353
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