| 摘要 |
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 fA according to the following equations: fA = (f +/- f DELTA )/m <IMAGE> wherein the factors m and l are integers and f 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 fA during conversion via an analog/digital converter into a digital signal. The digitilized signal is evaluated to determine the angular velocity.
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