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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 32, Iss. 21 — Nov. 1, 2007
  • pp: 3056–3058

Coherent transfer of an optical carrier over 251 km

N. R. Newbury, P. A. Williams, and W. C. Swann  »View Author Affiliations

Optics Letters, Vol. 32, Issue 21, pp. 3056-3058 (2007)

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We transfer an optical frequency over 251 km of optical fiber with a residual instability of 6 × 10 19 at 100 s . This instability and the associated timing jitter are limited fundamentally by the noise on the optical fiber and the link length. We give a simple expression for calculating the achievable instability and jitter over a fiber link. Transfer of optical stability over this long distance requires a highly coherent optical source, provided here by a cw fiber laser locked to a high finesse optical cavity. A sufficient optical carrier signal is delivered to the remote fiber end by incorporating two-way, in-line erbium-doped fiber amplifiers to balance the 62 dB link loss.

© 2007 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

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 20, 2007
Manuscript Accepted: August 25, 2007
Published: October 15, 2007

N. R. Newbury, P. A. Williams, and W. C. Swann, "Coherent transfer of an optical carrier over 251 km," Opt. Lett. 32, 3056-3058 (2007)

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