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Proceedings Paper

Coherent backscattering noise in a photonic-bandgap fiber optic gyroscope
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Paper 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.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 750302 (5 October 2009); doi: 10.1117/12.835495
Show Author Affiliations
Michel J. F. Digonnet, Stanford Univ. (United States)
Seth W. Lloyd, Stanford Univ. (United States)
Shanhui Fan, Stanford Univ. (United States)

Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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