The Effect of Localized Thermal Tuning of Resonator coil in a Resonator Fiber optic gyroscope

Abstract

Gyroscope is a device, which is used to measure the rotation rate. The primary concern of the Resonator Fiber Optic Gyroscope (RFOG) is the existence of various noises, which effects the sensitivity of the gyro.  In this context, this paper proposes a thermal tuning technique, which tunes the resonance wavelength of the resonator coil, to minimize the laser frequency noise. Different measures have been taken to minimize the effect of the other noise sources in our previous transections. To study the performance of the proposed technique, simulation studies are carried out in MATLAB Environment, which revels that the proposed technique is efficient in attenuating the reciprocal noises to the shot noise level by minimizing the laser frequency error. To validate the results, experimental studies were conducted, and observed that laser frequency noise along with other noises has reduced to the level of shot noise, and observed that the bias stability of the R-FOG is 2.119⁰/hr over 1500 seconds.