Coherent backscattering noise in a photonic-bandgap fiber optic gyroscope

Michel J. F. Digonnet; Seth W. Lloyd; Shanhui Fan

doi:10.1117/12.835495

5 October 2009 Coherent backscattering noise in a photonic-bandgap fiber optic gyroscope

Michel J. F. Digonnet, Seth W. Lloyd, Shanhui Fan

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 750302 (2009) https://doi.org/10.1117/12.835495
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Numerical simulations predict that the coherent backscattering noise of a fiber optic gyroscope (FOG) interrogated with a laser decreases when the laser's coherence length exceeds the length of the fiber loop. With a sufficiently coherent laser, this noise drops below the excess noise of the same FOG probed with broadband light. This new principle is paramount for the air-core FOG, which has a low sensitivity to the Kerr effect but exhibits stronger backscattering. It is also applicable to a conventional FOG. We provide evidence of this effect in an experimental FOG.

Citation Download Citation

Michel J. F. Digonnet, Seth W. Lloyd, and Shanhui Fan "Coherent backscattering noise in a photonic-bandgap fiber optic gyroscope", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750302 (5 October 2009); https://doi.org/10.1117/12.835495

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