Polarization-dependent carrier dynamics in quantum-dot semiconductor optical amplifiers for all-optical-wavelength converters
- Authors
- Ju, Heongkyu; Lee, Seung-Beck; Lee, Jonggoo
- Issue Date
- Jun-2007
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- quantum dots; SOA; wavelength converter; ultrafast birefringence; ultrafast carrier dynamics
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.50, no.6, pp.1933 - 1935
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 50
- Number
- 6
- Start Page
- 1933
- End Page
- 1935
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/180035
- DOI
- 10.3938/jkps.50.1933
- ISSN
- 0374-4884
- 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 mu m. 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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