Open AccessXOR performance of a quantum dot semiconductor optical amplifier based Mach-Zehnder interferometer
Author(s) -
Hongzhi Sun,
Q. Wang,
Hao Dong,
Niloy K. Dutta
Publication year - 2005
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.13.001892
Subject(s) - wetting layer , quantum dot , interferometry , mach–zehnder interferometer , xor gate , optical amplifier , physics , optics , astronomical interferometer , optoelectronics , materials science , logic gate , electronic engineering , laser , engineering
The performance of all-optical XOR gate based on quantum-dot (QD) SOA MZI has been simulated. The saturation power, optical gain and phase response of a QD SOA has been analyzed numerically using a rate equation model of quantum dots embedded in a wetting layer. The calculated response is used to model the XOR performance. For the parameters used here, XOR operation at ~ 250 Gb/s is feasible using QD based Mach-Zehnder interferometers. The speed is limited by the relaxation time from wetting layer to the quantum dots.