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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 36, Iss. 12 — Jun. 15, 2011
  • pp: 2185–2187

Group velocity manipulation in active fibers using mutually modulated cross-gain modulation: from ultraslow to superluminal propagation

K. Qian, L. Zhan, L. Zhang, Z. Q. Zhu, J. S. Peng, Z. C. Gu, X. Hu, S. Y. Luo, and Y. X. Xia  »View Author Affiliations


Optics Letters, Vol. 36, Issue 12, pp. 2185-2187 (2011)
http://dx.doi.org/10.1364/OL.36.002185


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Abstract

We propose and experimentally demonstrate the propagation of slow/fast light in an erbium-doped fiber (EDF) using mutually modulated cross-gain modulation. The group velocity of the light signal can be manipulated by the effect of gain cross-saturation modulation by a saturating light at an arbitrary wavelength in the gain bandwidth of the EDF. The ultraslow propagation with a small group velocity of 5.6 × 10 3 c (c is the light speed in free space) and superluminal propagation with a negative group velocity of 1.1 × 10 3 c has been observed under different modulation phases.

© 2011 Optical Society of America

OCIS Codes
(060.2320) Fiber optics and optical communications : Fiber optics amplifiers and oscillators
(060.4080) Fiber optics and optical communications : Modulation
(190.4370) Nonlinear optics : Nonlinear optics, fibers

ToC Category:
Nonlinear Optics

History
Original Manuscript: January 13, 2011
Revised Manuscript: May 3, 2011
Manuscript Accepted: May 3, 2011
Published: June 6, 2011

Citation
K. Qian, L. Zhan, L. Zhang, Z. Q. Zhu, J. S. Peng, Z. C. Gu, X. Hu, S. Y. Luo, and Y. X. Xia, "Group velocity manipulation in active fibers using mutually modulated cross-gain modulation: from ultraslow to superluminal propagation," Opt. Lett. 36, 2185-2187 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-12-2185


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