Abstract
A method for automatically suppressing the polarization fluctuation in a
resonator fiber optic gyro by adopting a resonator with twin 90° polarization-axis
rotated splices is proposed and demonstrated experimentally. The scheme ensures that the
input electric field excites only the desired eigenstate of polarization in the
resonator by automatically setting the length difference of the fiber segments between
the two 90° polarization-axis rotated splicing points at one half of the beat
length of the polarization maintaining fiber. The feasibility of the proposed scheme is
shown by simulation using a mathematical model based on the Jones transfer matrix. It is
also demonstrated experimentally that the bias stability is enhanced when the feedback
scheme is adopted.
© 2012 IEEE
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