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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 21 — Oct. 8, 2012
  • pp: 23518–23526

Ultra-stable long distance optical frequency distribution using the Internet fiber network

Olivier Lopez, Adil Haboucha, Bruno Chanteau, Christian Chardonnet, Anne Amy-Klein, and Giorgio Santarelli  »View Author Affiliations

Optics Express, Vol. 20, Issue 21, pp. 23518-23526 (2012)

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We report an optical link of 540 km for ultrastable frequency distribution over the Internet fiber network. The stable frequency optical signal is processed enabling uninterrupted propagation on both directions. The robustness and the performance of the link are enhanced by a cost effective fully automated optoelectronic station. This device is able to coherently regenerate the return optical signal with a heterodyne optical phase locking of a low noise laser diode. Moreover the incoming signal polarization variation are tracked and processed in order to maintain beat note amplitudes within the operation range. Stable fibered optical interferometer enables optical detection of the link round trip phase signal. The phase-noise compensated link shows a fractional frequency instability in 10 Hz bandwidth of 5 × 10−15 at one second measurement time and 2 × 10−19 at 30 000 s. This work is a significant step towards a sustainable wide area ultrastable optical frequency distribution and comparison network.

© 2012 OSA

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:
Fiber Optics and Optical Communications

Original Manuscript: June 21, 2012
Revised Manuscript: September 8, 2012
Manuscript Accepted: September 22, 2012
Published: September 28, 2012

Olivier Lopez, Adil Haboucha, Bruno Chanteau, Christian Chardonnet, Anne Amy-Klein, and Giorgio Santarelli, "Ultra-stable long distance optical frequency distribution using the Internet fiber network," Opt. Express 20, 23518-23526 (2012)

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