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Optics Letters

Optics Letters


  • Vol. 36, Iss. 16 — Aug. 15, 2011
  • pp: 3260–3262

Ultralow phase noise microwave generation with an Er:fiber-based optical frequency divider

Franklyn Quinlan, Tara M. Fortier, Matthew S. Kirchner, Jennifer A. Taylor, Michael J. Thorpe, Nathan Lemke, Andrew D. Ludlow, Yanyi Jiang, and Scott A. Diddams  »View Author Affiliations

Optics Letters, Vol. 36, Issue 16, pp. 3260-3262 (2011)

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We present an optical frequency divider based on a 200 MHz repetition rate Er:fiber mode-locked laser that, when locked to a stable optical frequency reference, generates microwave signals with absolute phase noise that is equal to or better than cryogenic microwave oscillators. At 1 Hz offset from a 10 GHz carrier, the phase noise is below 100 dBc / Hz , limited by the optical reference. For offset frequencies > 10 kHz , the phase noise is shot noise limited at 145 dBc / Hz . An analysis of the contribution of the residual noise from the Er:fiber optical frequency divider is also presented.

OCIS Codes
(120.4800) Instrumentation, measurement, and metrology : Optical standards and testing
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(350.4010) Other areas of optics : Microwaves

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 20, 2011
Manuscript Accepted: June 14, 2011
Published: August 15, 2011

Franklyn Quinlan, Tara M. Fortier, Matthew S. Kirchner, Jennifer A. Taylor, Michael J. Thorpe, Nathan Lemke, Andrew D. Ludlow, Yanyi Jiang, and Scott A. Diddams, "Ultralow phase noise microwave generation with an Er:fiber-based optical frequency divider," Opt. Lett. 36, 3260-3262 (2011)

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