Low-cost passive fiber optic gyroscope

Engelbert Hartl; Gert F. Trommer; R. Mueller; Hans Poisel

doi:10.1117/12.135073

1 February 1992 Low-cost passive fiber optic gyroscope

Engelbert Hartl, Gert F. Trommer, R. Mueller, Hans Poisel

Proceedings Volume 1585, Fiber Optic Gyros: 15th Anniversary Conf; (1992) https://doi.org/10.1117/12.135073
Event: OE Fiber, 1991, Boston, MA, United States

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.

Citation Download Citation

Engelbert Hartl, Gert F. Trommer, R. Mueller, and Hans Poisel "Low-cost passive fiber optic gyroscope", Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); https://doi.org/10.1117/12.135073

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