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Proceedings Paper

Fiber Optic Gyro With Digital Data Processing
Author(s): K. Bohm; P. Marten; L. Staudigel; E. Weidel
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Paper 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.

Paper Details

Date Published: 12 November 1984
PDF: 8 pages
Proc. SPIE 0514, 2nd Intl Conf on Optical Fiber Sensors: OFS'84, (12 November 1984); doi: 10.1117/12.945093
Show Author Affiliations
K. Bohm, AEG-Telefunken (W-Germany)
P. Marten, AEG-Telefunken (W-Germany)
L. Staudigel, AEG-Telefunken (W-Germany)
E. Weidel, AEG-Telefunken (W-Germany)


Published in SPIE Proceedings Vol. 0514:
2nd Intl Conf on Optical Fiber Sensors: OFS'84
Ralf Th. Kersten; Rainer Kist, Editor(s)

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