Open AccessHigh speed all optical logic gates based on quantum dot semiconductor optical amplifiers
Author(s) -
Shaozhen Ma,
Zhe Chen,
Hongzhi Sun,
Niloy K. Dutta
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.006417
Subject(s) - wetting layer , logic gate , optical amplifier , optoelectronics , quantum dot , xor gate , semiconductor , amplifier , materials science , physics , optics , computer science , cmos , laser , algorithm
A scheme to realize all-optical Boolean logic functions AND, XOR and NOT using semiconductor optical amplifiers with quantum-dot active layers is studied. nonlinear dynamics including carrier heating and spectral hole-burning are taken into account together with the rate equations scheme. Results show with QD excited state and wetting layer serving as dual-reservoir of carriers, as well as the ultra fast carrier relaxation of the QD device, this scheme is suitable for high speed Boolean logic operations. Logic operation can be carried out up to speed of 250 Gb/s.