Fiber- optic Gyroscopes Based on Polarization Scrambling

[[abstract]]A novel fiber-optic gyroscope with a single-mode diode laser as the light source and two polarization scramblers as time-varying depolarizers is demonstrated. This arrangement reduces the nonreciprocal phase noise induced by the cross coupling between polarization modes in single-mode fibers. The experimental results show that a phase-noise reduction factor of 18 can be achieved[[fileno]]2010144010022[[department]]物理