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Polarization-dependent carrier dynamics in quantum-dot semiconductor optical amplifiers for all-optical-wavelength converters

Title
Polarization-dependent carrier dynamics in quantum-dot semiconductor optical amplifiers for all-optical-wavelength converters
Authors
Ju H.Lee S.-B.Lee J.
Ewha Authors
이종구
Issue Date
2007
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
vol. 50, no. 6, pp. 1933 - 1935
Indexed
SCI; SCIE; SCOPUS; KCI WOS scopus
Abstract
We examine ultrafast nonlinear birefringence of femtosecond optical pulses propagating through a semiconductor optical amplifier whose active element is composed of InAs/InP quantum dots at about 1.55 μm. The polarization- sensitive carrier dynamics in quantum dots are modeled for nonlinear gain bleaching that is employed for nonlinear birefringence for all-optical- wavelength converters. It is revealed that quantum dots support ultrafast nonlinear gain bleaching for ultrafast birefringence used in ultrafast all-optical-wavelength converters. The pump-pulse energy is one of the key ingredients for a well-shaped converted signal. In addition, nonlinear gain and index dynamics are discussed for ultra-high-speed operation with reduced pattern-effects.
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연구기관 > 나노·바이오기술연구소 > Journal papers
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