DocumentCode
1022598
Title
Coherent backscatter-induced drift in phase-modulated optical fibre gyroscopes
Author
Giles, Ian P. ; Mackintosh, J. ; McMillan, Justine ; Culshaw, Brian
Author_Institution
University of Strathclyde, Eleclronic & Electrical Engineering Deportment, Glasgow, UK
Volume
22
Issue
9
fYear
1986
Firstpage
494
Lastpage
496
Abstract
The rotation rate measurement error produced by back-scatter from a partially coherent source has been investigated. The level of error introduced is shown to be dependent on the phase-modulation frequency. Operation at the correct frequency completely eliminates the coherent backscatter-induced errors. Taking into consideration realistic modulator stability conditions a source with a coherence length of tens of centimetres is feasible in an inertial grade, phase-modulated system.
Keywords
angular velocity measurement; backscatter; fibre optic sensors; gyroscopes; light scattering; measurement errors; phase modulation; coherent backscatter-induced errors; inertial grade; measurement errors; modulator stability conditions; optical fibre gyroscopes; partially coherent source; phase-modulation frequency; rotation rate measurement;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19860336
Filename
4256530
Link To Document