Patent ID: 9207082
Filing Date: 2015-12-08
Classification: G01C

Abstract:
1. A resonator fiber optic gyroscope (RFOG) comprising: an optical fiber resonator including: a first detector configured to sense a portion of the counter-clockwise propagating light and provide a signal based thereon to resonance tracking electronics; a second detector configured to sense a portion of the clockwise propagating light and provide a signal based thereon to the resonance tracking electronics; the resonance tracking electronics configured to determine a rotation rate of the optical fiber resonator based on the signals from the first and second detector; one or more pump lasers to produce one or more pump beams for the one or more optical gain elements in the resonator; control electronics configured to control the one or more pump lasers and the one or more variable optical attenuators, such that the round-trip loss of the resonator is a substantially constant, positive value.