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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Grover Swartzlander
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: 678–685

In-line extraction of an ultrastable frequency signal over an optical fiber link

Anthony Bercy, Saïda Guellati-Khelifa, Fabio Stefani, Giorgio Santarelli, Christian Chardonnet, Paul-Eric Pottie, Olivier Lopez, and Anne Amy-Klein  »View Author Affiliations

JOSA B, Vol. 31, Issue 4, pp. 678-685 (2014)

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We demonstrate in-line extraction of an ultrastable frequency signal over an optical link of 92 km of installed telecommunication fibers, following the proposition of Grosche in 2010 [German patent application DE 10.2008.062.139]. We show that the residual frequency noise at the extraction end is noticeably below that at the main link output when the extraction is near the input end, as expected from a simple model of the noise compensation. We obtain relative frequency instabilities, expressed as overlapping Allan deviation, of 8×1016 at 1 s averaging time and a few 1019 at one day. These results are state-of-the-art for a link using urban telecommunication fibers. We also propose an improved scheme, which delivers an ultrastable signal of higher power, in order to feed a secondary link. In-line extraction opens the way to a broad distribution of an ultrastable frequency reference, enabling a wide range of applications beyond metrology.

© 2014 Optical Society of America

OCIS Codes
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(140.0140) Lasers and laser optics : Lasers and laser optics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: October 11, 2013
Revised Manuscript: January 20, 2014
Manuscript Accepted: January 22, 2014
Published: March 5, 2014

Anthony Bercy, Saïda Guellati-Khelifa, Fabio Stefani, Giorgio Santarelli, Christian Chardonnet, Paul-Eric Pottie, Olivier Lopez, and Anne Amy-Klein, "In-line extraction of an ultrastable frequency signal over an optical fiber link," J. Opt. Soc. Am. B 31, 678-685 (2014)

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