Phase error bounds of fibre gyro with imperfect polariser/depolariser

12 April 1984

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

Vol. 20 (8) , 330-332
https://doi.org/10.1049/el:19840224

Abstract

In fibre-optic gyroscopes a drifting zero-offset due to changing fibre birefringence may be reduced by inserting a single-mode polarising filter and a depolariser. For a real gyro, in which these components and their alignment are imperfect, bounds are derived for the remaining zero-offset. A simple experimental procedure permits the measurement of that offset.

Keywords

PHASE ERROR BOUNDS
MEASUREMENT ERRORS
IMPERFECT REAL GYRO
NONELECTRIC SENSING DEVICES
DEPOLARISER
FIBRE BIREFRINGENCE VARIATION REDUCTION
SAGNAC PHASE SHIFT
FIBRE-OPTIC GYROSCOPES
SINGLE-MODE POLARISING FILTER
ZERO-OFFSET

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