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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 14 — Jul. 9, 2007
  • pp: 8951–8959

Long-term stable microwave signal extraction from mode-locked lasers

J. Kim, F. Ludwig, M. Felber, and F. X. Kärtner  »View Author Affiliations

Optics Express, Vol. 15, Issue 14, pp. 8951-8959 (2007)

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Long-term synchronization between two 10.225 GHz microwave signals at +10 dBm power level, locked to a 44.26 MHz repetition rate passively mode-locked fiber laser, is demonstrated using balanced optical-microwave phase detectors. The out-of-loop measurement result shows 12.8 fs relative timing jitter integrated from 10 Hz to 10 MHz. Long-term timing drift measurement shows 48 fs maximum deviation over one hour, mainly limited by drift of the out-of-loop characterization setup itself. To the best of our knowledge, this is the first time to demonstrate long-term (>1 hour) 3 mrad-level phase stability of a 10.225 GHz microwave signal extracted from a mode-locked laser.

© 2007 Optical Society of America

OCIS Codes
(120.3940) Instrumentation, measurement, and metrology : Metrology
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(320.7160) Ultrafast optics : Ultrafast technology
(350.4010) Other areas of optics : Microwaves

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: May 7, 2007
Revised Manuscript: June 13, 2007
Manuscript Accepted: June 27, 2007
Published: July 5, 2007

J. Kim, F. Ludwig, M. Felber, and F. X. Kärtner, "Long-term stable microwave signal extraction from mode-locked lasers," Opt. Express 15, 8951-8959 (2007)

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