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Optical Engineering

Time-resolved chirp properties of semiconductor optical amplifiers in high-speed all-optical switches
Author(s): Ligong Chen; Rongguo Lu; Shangjian Zhang; Yong Liu
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Paper Abstract

The chirp properties of semiconductor optical amplifiers in all-optical switches are numerically investigated using a field propagation model. The chirp dynamics in the blue-shift and red-shift sideband are analyzed under the injection of random optical pump pulses. We also analyze the impact of the blue-detuned filtering scheme that is used to eliminate the pattern effect and enhance the operating speed of the optical switching. The reason for overshoots in eye diagrams in the blue-detuned filtering scheme is explained. We find that overshoots result from the ultrafast blue chirp induced by carrier heating and two-phonon absorption. These results are very useful for semiconductor optical amplifier-based ultrafast all-optical signal processing.

Paper Details

Date Published: 5 March 2013
PDF: 7 pages
Opt. Eng. 52(3) 035003 doi: 10.1117/1.OE.52.3.035003
Published in: Optical Engineering Volume 52, Issue 3
Show Author Affiliations
Ligong Chen, Univ. of Electronic Science and Technology of China (China)
Rongguo Lu, Univ. of Electronic Science and Technology of China (China)
Shangjian Zhang, Univ. of Electronic Science and Technology of China (China)
Yong Liu, Univ. of Electronic Science and Technology of China (China)


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