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FIBER OPTIC GYROSCOPE WITH POLARIZATION HOLDING FIBER

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Abstract

Fiber optic gyroscopes have been reported with both low short term noise1 and good long term zero point stabi1ity.2 A1though optical polarization stabi1ity is a well-known noise source in these devices, to date only fiber coils with ordinary low birefringence fiber have been reported. We report here a fiber gyroscope in which all fiber used, in the coupler, phase modulator, and coil, is high birefringence polarization-holding fiber. Performance of this device is equivalent in the short term and a factor of ~ 4 improved in the long term, compared to the results reported in References 1 and 2, which are the best reported to date. This performance is Interesting because 1t was achieved with a device in many respects quite different from those used previously.

© 1983 Optical Society of America

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