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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 26 — Dec. 25, 2006
  • pp: 12968–12975

Experimental demonstration of slow and superluminal light in semiconductor optical amplifiers

Bala Pesala, Zhangyuan Chen, Alexander V. Uskov, and Connie Chang-Hasnain  »View Author Affiliations

Optics Express, Vol. 14, Issue 26, pp. 12968-12975 (2006)

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Tunable delays in semiconductor optical amplifiers are achieved via four wave mixing between a strong pump beam and a modulated probe beam. The delay of the probe beam can be controlled both electrically, by changing the SOA bias, and optically, by varying the pump power or the pump-probe detuning. For sinusoidal modulated signal at 0.5 GHz, a tunable delay of 1.6 ns is achieved. This corresponds to a RF phase change of 1.6 π. For 1.3 ns optical pulses propagating through the SOA a delay of 0.59 ns is achieved corresponding to a delay-bandwidth product exceeding 0.45. For both the cases, slow light and superluminal light are observed as the pump-probe detuning is varied.

© 2006 Optical Society of America

OCIS Codes
(230.1150) Optical devices : All-optical devices
(230.4320) Optical devices : Nonlinear optical devices

ToC Category:
Nonlinear Optics

Original Manuscript: October 2, 2006
Revised Manuscript: December 5, 2006
Manuscript Accepted: December 7, 2006
Published: December 22, 2006

Bala Pesala, Zhangyuan Chen, Alexander V. Uskov, and Connie Chang-Hasnain, "Experimental demonstration of slow and superluminal light in semiconductor optical amplifiers," Opt. Express 14, 12968-12975 (2006)

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