Title :
Analysis and characterization of the hyperchaos generated by a semiconductor laser subject to a delayed feedback loop
Author :
Vicente, Raúl ; Daudén, José ; Colet, Pere ; Toral, Raul
Author_Institution :
Dept. de Fisica, Univ. de les Illes Balears, Palma de Mallorca, Spain
fDate :
4/1/2005 12:00:00 AM
Abstract :
We characterize the chaotic dynamics of semiconductor lasers subject to either optical or electrooptical feedback modeled by Lang-Kobayashi and Ikeda equations, respectively. This characterization is relevant for secure optical communications based on chaos encryption. In particular, for each system we compute as a function of tunable parameters the Lyapunov spectrum, Kaplan-Yorke dimension and Kolmogorov-Sinai entropy.
Keywords :
chaotic communication; cryptography; delays; electro-optical effects; laser feedback; optical chaos; optical communication equipment; optical tuning; semiconductor device models; semiconductor lasers; Ikeda equations; Kaplan-Yorke dimension; Kolmogorov-Sinai entropy; Lang-Kobayashi equations; Lyapunov spectrum; chaos encryption; chaotic dynamics; delayed feedback loop; electrooptical feedback; hyperchaos; optical feedback; secure optical communications; semiconductor laser; Chaotic communication; Character generation; Delay; Equations; Feedback loop; Laser feedback; Laser modes; Lasers and electrooptics; Optical feedback; Semiconductor lasers; Chaotic communications; chaotic lasers; delay; feedback;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2005.843606
