12 November 1984 Fiber Optic Gyro With Digital Data Processing
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Proceedings Volume 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84; (1984) https://doi.org/10.1117/12.945093
Event: 2nd International Conference on Optical Fiber Sensors, 1984, Stuttgart, Germany
Abstract
Fiber optic gyros make use of the Sagnac-effect for rotation rate measurement. Two counterpropagating light beams travelling through a coil with length L and diameter D experience a phase shift 2ΔΦ which is given by (1) 2ΔΦ 2LD Ω λ= wavelength c = velocity of light Ω = angular velocity This phase shift can be detected with a 'phase-nulling scheme' or by direct detection /1/. The direct detection has the advantage of an uncomplicated optical set-up (Fig. 1, /2/), but the signal detection raises some problems. By using an analogue system the linearity and the dynamic range are subject to severe limitations. To overcome these problems we use a digital signal detection scheme.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
K. Bohm, K. Bohm, P. Marten, P. Marten, L. Staudigel, L. Staudigel, E. Weidel, E. Weidel, } "Fiber Optic Gyro With Digital Data Processing", Proc. SPIE 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84, (12 November 1984); doi: 10.1117/12.945093; https://doi.org/10.1117/12.945093
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