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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 35, Iss. 2 — Jan. 15, 2010
  • pp: 121–123

Measurement of reduced backscattering noise in laser-driven fiber optic gyroscopes

Seth W. Lloyd, Vinayak Dangui, Michel J.F. Digonnet, Shanhui Fan, and G. S. Kino  »View Author Affiliations


Optics Letters, Vol. 35, Issue 2, pp. 121-123 (2010)
http://dx.doi.org/10.1364/OL.35.000121


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Abstract

We report what we believe to be the first demonstration of a laser-driven fiber optic gyroscope (FOG) built with an air-core fiber. Its phase noise is measured to be 130 μ rad Hz . When the sensing fiber is replaced with a conventional fiber, this figure drops to 12 μ rad Hz . Comparison between these values suggests that the air-core fiber gyro is most likely not limited solely by backscattering noise but by reflections at the solid-core/air-core interface. By minimizing additional noise sources and reducing the air-core fiber loss to its theoretical limit ( 0.1 dB km ) , we predict that the backscattering noise of the laser-driven air-core FOG will drop below the level of current FOGs. Compared with commercial FOGs, this FOG will exhibit a lower noise, improved thermal and mean-wavelength stability, and reduced magnetic-field sensitivity.

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2800) Fiber optics and optical communications : Gyroscopes
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: September 14, 2009
Manuscript Accepted: November 9, 2009
Published: January 11, 2010

Citation
Seth W. Lloyd, Vinayak Dangui, Michel J. F. Digonnet, Shanhui Fan, and G. S. Kino, "Measurement of reduced backscattering noise in laser-driven fiber optic gyroscopes," Opt. Lett. 35, 121-123 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-2-121

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