Greatly enhanced slow and fast light in chirped pulse semiconductor optical amplifiers: theory and experiments

Chirped pulse scheme is shown to be highly effective to attain large tunable time shifts via slow and fast light for an ultra-short pulse through a semiconductor optical amplifier (SOA). We show for the first time that advance can be turned into delay by simply reversing the sign of the chirp. A lar...

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Bibliographic Details
Published in:Optics express 2009-02, Vol.17 (4), p.2188-2197
Main Authors: Pesala, Bala, Sedgwick, Forrest, Uskov, Alexander V, Chang-Hasnain, Connie
Format: Article
Language:English
Subjects:
Computer Simulation
Computer-Aided Design
Equipment Design
Equipment Failure Analysis
Light
Models, Theoretical
Optical Devices
Reproducibility of Results
Scattering, Radiation
Semiconductors
Sensitivity and Specificity
Signal Processing, Computer-Assisted - instrumentation
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Summary:Chirped pulse scheme is shown to be highly effective to attain large tunable time shifts via slow and fast light for an ultra-short pulse through a semiconductor optical amplifier (SOA). We show for the first time that advance can be turned into delay by simply reversing the sign of the chirp. A large continuously tunable advance-bandwidth product (ABP) of 4.7 and delay-bandwidth product (DBP) of 4.0 are achieved for a negatively and positively chirped pulse in the same device, respectively. We show that the tunable time shift is a direct result of self-phase modulation (SPM). Theoretical simulation agrees well with experimental results. Further, our simulation results show that by proper optimization of the SOA and chirper design, a large continuously tunable DBP of 55 can be achieved.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.17.002188