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Proceedings Paper

Low-cost passive fiber optic gyroscope
Author(s): Engelbert Hartl; Gert F. Trommer; R. Mueller; Hans Poisel
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Paper Abstract

This paper presents a passive fiber optic gyroscope without nonreciprocal phase modulation. A fused fiber 3 X 3 directional coupler provides a constant phase shift, thus enabling the detection of rotation rate at the quadrature point. Bias and scale factor errors due to indeterministically changing birefringent coupling centers in the non-polarization preserving monomode fiber coil are eliminated by using a contrast insensitive signal recovery scheme. A simple temperature compensation procedure has been implemented in the gyro software which yields a bias stability < 0.04 deg/sec and scale factor errors < 0.5% in the whole temperature range between -40$DEGC and +70 degree(s)C.

Paper Details

Date Published: 1 February 1992
PDF: 12 pages
Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135073
Show Author Affiliations
Engelbert Hartl, MBB Deutsche Aerospace (Germany)
Gert F. Trommer, MBB Deutsche Aerospace (Germany)
R. Mueller, MBB Deutsche Aerospace (Germany)
Hans Poisel, MBB Deutsche Aerospace (Germany)

Published in SPIE Proceedings Vol. 1585:
Fiber Optic Gyros: 15th Anniversary Conf
Shaoul Ezekiel; Eric Udd, Editor(s)

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