Effects of the second harmonic and the duty cycle on the scale factor of a fiber-optic gyroscope with gated two-harmonic phase modulation.
We show that an electronic servo loop can be closed stably and accurately on a fiber-optic gyroscope by using the phase-modulation technique. Using a closed-loop fiber-optic gyroscope with gated two-harmonic phase modulation, an experiment on the linearity was performed; a linearity of approximately 0.5% was achieved below 90 degrees /sec. The parameter dependencies of the linearity are discussed and theoretical and experimental results given.
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Kim
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Chung
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