The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 09, 1993
Filed:
Dec. 19, 1990
Heinz Gockler, Backnang, DE;
ANT Nachrichtentechnik GmbH, Backnang, DE;
Abstract
A method and circuit arrangement for determining angular velocities by means of an optical fiber ring interferometer includes, in addition to, a phase modulator for modulating light waves passing through an optical fiber ring of the interferometer at a phase modulation frequency f, and a device for combining light waves leaving the optical fiber ring to produce an output signal, a unit for generating a sampling frequency f.sub.A according to the following equations: ##EQU1## wherein the factors m and l are integers and f.sub..DELTA. is a whole number component i.e., subharmonic, of the phase modulation frequency. The output signal of the interferometer is sampled at the frequency f.sub.A during conversion via an analog/digital converter into a digital signal. The digitilized signal is evaluated to determine the angular velocity.