We introduce models and realizations demonstrating the feasibility of multimode fiber optic gyroscopes (MFOG). Some solutions to specific problems of MFOG (contrast instability and zero drifts) are described in terms of coupling effects on nonidentical counter propagating modal distributions. Our first experimental results show good correlations between phase and intensity variations under modal coupling effects. We propose a method of detection adapted to MFOG which uses a zero drift stabilization device based on these correlations.

Date Published: 1 February 1992
PDF: 13 pages
Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135061

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