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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 18 — Sep. 15, 2011
  • pp: 3654–3656

Optical-fiber pulse rate multiplier for ultralow phase-noise signal generation

A. Haboucha, W. Zhang, T. Li, M. Lours, A. N. Luiten, Y. Le Coq, and G. Santarelli  »View Author Affiliations


Optics Letters, Vol. 36, Issue 18, pp. 3654-3656 (2011)
http://dx.doi.org/10.1364/OL.36.003654


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Abstract

In this Letter we report on an all optical-fiber approach to the synthesis of ultralow-noise microwave signals by photodetection of femtosecond laser pulses. We use a cascade of Mach–Zehnder fiber interferometers to realize stable and efficient repetition rate multiplication. This technique increases the signal level of the photodetected microwave signal by close to 18 dB . That in turn allows us to demonstrate a residual phase-noise level of 118 dBc / Hz at 1 Hz and 160 dBc / Hz at 10 MHz from a 12 GHz signal. The residual noise floor of the fiber multiplier and photodetection system alone is around 164 dBc / Hz at the same offset frequency, which is very close to the fundamental shot-noise floor.

© 2011 Optical Society of America

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(140.3510) Lasers and laser optics : Lasers, fiber
(140.4050) Lasers and laser optics : Mode-locked lasers
(230.0250) Optical devices : Optoelectronics

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: June 24, 2011
Revised Manuscript: July 29, 2011
Manuscript Accepted: August 21, 2011
Published: September 14, 2011

Citation
A. Haboucha, W. Zhang, T. Li, M. Lours, A. N. Luiten, Y. Le Coq, and G. Santarelli, "Optical-fiber pulse rate multiplier for ultralow phase-noise signal generation," Opt. Lett. 36, 3654-3656 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-18-3654

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