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Self-beating resonant optical gyroscope with a “reflector”: the possibility of high sensitivities at reduced costs

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Abstract

Using simulations and theoretical analysis, we present an innovative readout technique that uses the change in a beat frequency signal for sensing rotation in the resonant fiber gyroscope with a “reflector.” Unlike traditional fiber optic gyros, this gyroscope uses an embedded reflecting element that deliberately couples the clockwise and counter-clockwise propagating waves for sensing rotation. Our analytical results predict increased immunity to the degrading effects of backscattering, Kerr nonlinearities, and ambient variations at an optimum nonreciprocal bias. Using just a few meters of fiber and without requiring a very narrow-linewidth source, sensitivities below 1 deg/h along with a dynamic range greater than 106deg/h are predicted. The technique has the potential to provide a cost-effective solution in the tactical grade.

© 2019 Optical Society of America

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