A novel dual-core fiber-optic gyroscope with independ-ent rotation rate measurements in different cores of a dual-core optical fiber

Abstract:

We introduce an all-fiber stationary phase shifter for a fiber-optic gyroscope which simultaneously provides phase shifts of opposite signs in different cores of the dual-core optical fiber. We propose a new dual-core fiber-optic gyro-scope in which different cores of the dual-core optical fiber provide independent rotation rate measurements. The device enables implementation of a differential scheme, which ensures the stability of the measured phase shift. As a computer simulations result, the accuracy of the rotation rate sensing increased by up to 10 times at typical noise levels.

Key words:Fiber-optic gyroscope, interferometric gyroscope, optical gyroscope