Patent ID: 11920933
Assignee: HONEYWELL INTERNATIONAL INC.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A method of reducing bias error in a resonator of an optical gyroscope, the method comprising:
receiving measurements corresponding to an optical path length of an optical gyroscope resonator, wherein the optical gyroscope resonator comprises a plurality of path length adjustment members coupled to an optical path within the optical gyroscope resonator, wherein each path length adjustment member is configured to adjust a respective portion of the optical path within the optical gyroscope resonator, wherein at least one path length adjustment member of the plurality of path length adjustment members is positioned about a midpoint of the optical path within the resonator;
measuring a bandwidth of the optical gyroscope; and
modulating the optical path length by controlling each of the plurality of optical path length adjustment members so that at least one of a frequency and wavelength corresponding to the optical path length is modulated outside the bandwidth, wherein the controlling is configured to selectively modulate a phase shift of one path length adjustment member relative to another path length adjustment member so that different phase shifts are modulated between the one path length adjustment member and the another path length adjustment member.