Abstract
Ring lasers are advantageous for optical gyroscopes due to small dimensions, absence of any matching technique between the optical beam and the cavity resonant frequencies, high polarization selectivity, good sensitivity and relatively low quantum limit. Different approaches (for example [1]) have been proposed for angular velocity detection, assuming in all cases single mode and bidirectional operation. However, this assumption is not valid in practice due to the inherent multimode spectrum of ring lasers inducing a high level mode-hopping noise in the low frequency regime, and inherent directional bistability, diminishing bidirectional operation.
© 2007 IEEE
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