1 February 1992 Low-cost passive fiber optic gyroscope
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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.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Engelbert Hartl, Engelbert Hartl, Gert F. Trommer, Gert F. Trommer, R. Mueller, R. Mueller, Hans Poisel, Hans Poisel, } "Low-cost passive fiber optic gyroscope", Proc. SPIE 1585, Fiber Optic Gyros: 15th Anniversary Conf, (1 February 1992); doi: 10.1117/12.135073; https://doi.org/10.1117/12.135073


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