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Bandwidth improvement for slow light using amplification characteristics of cascaded vertical-cavity surface-emitting lasers |
Optics Letters, Vol. 38, Issue 3, pp. 308-310 (2013)
http://dx.doi.org/10.1364/OL.38.000308
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Abstract
A scheme to improve the bandwidth of slow light using cascaded vertical-cavity surface-emitting lasers (VCSELs) is proposed and experimentally demonstrated. In the scheme, a proper adjustment on the gain peaks of two cascaded VCSELs enables the generation of the desired composite gain spectrum, which has flat-top gain and delay profiles with enhanced peak values. By employing the improved gain and delay profiles in a slow light system, a large delay can be achieved within a wider bandwidth. In the experiment, by using two cascaded VCSELs, a tunable slow light up to 135 ps for a
© 2013 Optical Society of America
OCIS Codes
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(210.4680) Optical data storage : Optical memories
(140.7260) Lasers and laser optics : Vertical cavity surface emitting lasers
ToC Category:
Lasers and Laser Optics
History
Original Manuscript: November 6, 2012
Revised Manuscript: December 26, 2012
Manuscript Accepted: December 26, 2012
Published: January 22, 2013
Citation
Y.-N. Ma, B. Luo, L.-S. Yan, W. Pan, X. H. Zou, J. P. Zhao, N. Q. Li, and X. K. Liu, "Bandwidth improvement for slow light using amplification characteristics of cascaded vertical-cavity surface-emitting lasers," Opt. Lett. 38, 308-310 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-3-308
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