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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 22 — Nov. 15, 2006
  • pp: 3360–3362

Sluggish light for radio-frequency true-time-delay applications with a large time–bandwidth product

Lu Gao, Sandrine I. Herriot, and Kelvin H. Wagner  »View Author Affiliations


Optics Letters, Vol. 31, Issue 22, pp. 3360-3362 (2006)
http://dx.doi.org/10.1364/OL.31.003360


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Abstract

A new radio-frequency (RF) photonic technique for achieving large RF time delays has been experimentally demonstrated using femtosecond pulses modulated by an acousto-optic tunable filter in a frequency-mapped and Doppler-shifted modulation scheme. A short optical delay line with length of 240 μ m produces nearly 3 μ s RF time delay after optical heterodyne detection, resulting in an effective slow-light velocity of 86 m s . A delay-to-pulse-width ratio of 20 based on this technique has been observed, with a larger fractional delay foreseeable.

© 2006 Optical Society of America

OCIS Codes
(070.1060) Fourier optics and signal processing : Acousto-optical signal processing
(280.4750) Remote sensing and sensors : Optical processing of radar images
(280.5110) Remote sensing and sensors : Phased-array radar
(320.7120) Ultrafast optics : Ultrafast phenomena

ToC Category:
Ultrafast Optics

History
Original Manuscript: June 7, 2006
Revised Manuscript: September 4, 2006
Manuscript Accepted: September 7, 2006
Published: October 26, 2006

Citation
Lu Gao, Sandrine I. Herriot, and Kelvin H. Wagner, "Sluggish light for radio-frequency true-time-delay applications with a large time-bandwidth product," Opt. Lett. 31, 3360-3362 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-22-3360


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