Analysis and characterization of the hyperchaos generated by a semiconductor laser subject to a delayed feedback loop

• Published in: IEEE journal of quantum electronics Vol. 41; no. 4; pp. 541 - 548
• Main Authors: Vicente, R., Dauden, J., Colet, P., Toral, R.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.04.2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Chaos theory; Chaotic communication; Chaotic communications; chaotic lasers; Character generation; Delay; Dynamical laser instabilities; noisy laser behavior; Dynamical systems; Dynamics; Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics; Electrooptical; Entropy; Equations; Exact sciences and technology; feedback; Feedback loop; Fundamental areas of phenomenology (including applications); Laser feedback; Laser modes; Laser optical systems: design and operation; Lasers; Lasers and electrooptics; Mathematical analysis; Mathematical models; Nonlinear optics; Optical feedback; Optics; Physics; Semiconductor lasers; Semiconductor lasers; laser diodes; Systems, networks and services of telecommunications; Telecommunications; Telecommunications and information theory; Transmission and modulation (techniques and equipments); Chaotic communications; Optical chaos; Theoretical study; chaotic lasers; Encryption; Random lasers; feedback; Chaotic communication; Semiconductor lasers; delay; Optical feedback; Lyapunov exponent; Optical communication; Time delay; Telecommunication security
• ISSN: 0018-9197; 1558-1713
• DOI: 10.1109/JQE.2005.843606

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.