Title :
Gain Dynamics in Quantum-Dot Semiconductor Optical Amplifiers at 1550 nm
Author :
Contestabile, G. ; Maruta, A. ; Kitayama, K.
Author_Institution :
Scuola Superiore Sant´´Anna, Pisa, Italy
fDate :
7/1/2010 12:00:00 AM
Abstract :
We report an experimental study of the gain recovery of an InAs-InGaAsP-InP columnar-quantum-dot semiconductor optical amplifier around 1550 nm. We find a three-step recovery process that gives around 85% gain recovery in only 10 ps and 100% in around 30 ps in case of a quite complete gain saturation. We also give a possible physical explanation for the peculiar gain dynamics.
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; quantum dot lasers; recovery; semiconductor optical amplifiers; InAs-InGaAsP-InP; columnar-quantum-dot semiconductor optical amplifiers; gain dynamics; gain recovery; gain saturation; three-step recovery process; wavelength 1550 nm; Gain dynamics; quantum dot (QD); semiconductor optical amplifier (SOA);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2010.2047852
