Abstract
An analysis of the noise floor owing to temperature-induced index fluctuations in
the fiber of a dynamically biased interferometric fiber-optic gyroscope is
presented. A comparison with shot noise indicates that, for a harmonic bias
modulation, thermal noise in the fiber dominates for fiber lengths longer than
~1–2 km when practical source power levels are considered. The noise can
be reduced or eliminated by the proper choice of modulation frequency or
waveform.
© 1995 Optical Society of America
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