Abstract

We investigated the gyro-compassing capability of a Brillouin ring laser gyro set up in a two-color operation. Two counterpropagating pump lasers initiated two Brillouin ring lasers on different resonances of a fiber-optic ring resonator cavity, which excluded the mutual intracavity interaction between both counterpropagating Brillouin lasers. Additionally minimizing the external feedback channels of the individual Brillouin lasers allowed for high-resolution measurements, e.g., the horizontal component of the Earth’s rotation rate (10.0°/h at Überlingen, Germany, which corresponded to a beat frequency of 6.85 Hz).

© 1994 Optical Society of America

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