Low noise and low drift in a laser-driven fiber optic gyroscope with a 1-km coil

J. N. Chamoun; A. Evans; F. A. Mosca; M. J. F. Digonnet

doi:10.1117/12.2059692

2 June 2014 Low noise and low drift in a laser-driven fiber optic gyroscope with a 1-km coil

J. N. Chamoun, A. Evans, F. A. Mosca, M. J. F. Digonnet

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91570E (2014) https://doi.org/10.1117/12.2059692
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We report an experimental fiber optic gyroscope (FOG) utilizing a 1085-m coil of 8-cm diameter driven with a laser of 10- MHz linewidth, with a record rotation-rate noise as low as 0.2 deg/h/√Hz and a drift below 0.038 deg/h. Simulations and comparison to the measured performance of a similar 150-m FOG show that the noise is limited approximately equally by coherent backscattering and polarization coupling in the sensing coil, and unaffected by the Kerr effect.

Citation Download Citation

J. N. Chamoun, A. Evans, F. A. Mosca, and M. J. F. Digonnet "Low noise and low drift in a laser-driven fiber optic gyroscope with a 1-km coil", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570E (2 June 2014); https://doi.org/10.1117/12.2059692

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