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It is a well-known fact that interferometric fiber optic gyroscopes (IFOGs)are easily distorted by thermal effects and distortion results in thedegradation of the performance of these sensors. Changing the fiber coilgeometry, increasing the winding symmetry, adding fiber buffer layers aroundthe fiber coil, using different modulation methods for multifunctionalintegrated optic chips (MIOCs), and using special types of fibers, such asphotonic crystal fibers (PCFs), are some alternative solutions for preventingthis degradation. This paper, theoretically and experimentally, investigatesnot only how different types of fiber coil winding methods behave underdifferent rates of temperature change but also presents a novel method, to thebest of our knowledge, to eliminate the Shupe effect, without violating thesimplest IFOG scheme. This method rules out the importance of the windingsymmetry epochally and the need of any extra treatment for the fiber coil toincrease the thermal performance of the system. Regardless of the symmetry ofthe fiber coil winding, the rate error due to the Shupe effect can be reducedto about $\pm$$0.05^\circ/$h for any rate of temperature change with this newmethod according to the experimental results.

A Novel Method to Eliminate the Symmetry Dependence of Fiber Coils for Shupe Mitigation