Crossover-Free Fiber Optic Gyroscope Micro-Sensor Coils

Morgan Research Corporation proposes to combine crossover-free fiber winding techniques with the selection of optimal SM fibers, high quality coil form materials, and ideal adhesives to produce an enhanced Crossover-Free Micro Sensor Coil. The crossover-free winding configuration also includes built-in thermal symmetry, which greatly reduces both the radial and axial components of time-varying thermal gradients. This Phase II effort will provide a substantial two-fold breakthrough: 1) by eliminating polarization non-reciprocal (PNR) bias errors for depolarized IFOGs, and 2) by reducing the largest IFOG error source, time-varying thermal gradients which is most commonly known as the Shupe effect. By combining these technologies, the elimination of bias errors created by fiber crossovers, stress birefringence, and thermal effects in IFOG sensor coils may be realized. These technology advancements will provide increased IFOG performance at reduced cost.