Information Encoding and Decoding Using Unidirectionally Coupled Chaotic Semiconductor Lasers Subject to Filtered Optical Feedback

Author

Ruiz-Oliveras, Flavio ; Soriano, Miguel C. ; Colet, Pere ; Mirasso, Claudio R.

Author_Institution

Centro de Investig. en Opt., Guanajuato, Mexico

Volume

45

Issue

8

fYear

2009

Firstpage

972

Lastpage

978

Abstract

We present a detailed numerical study of the dynamics of two unidirectionally coupled semiconductor lasers subject to filtered optical feedback. We show that this chaos-based communication scheme allows for an improvement in the decoding of encrypted messages in comparison with the conventional feedback scheme. We found that the performance of the system is optimal when the closed-loop configuration and similar filters are used in the emitter and receiver systems.

Keywords

chaotic communication; cryptography; decoding; encoding; optical chaos; optical feedback; optical filters; optical receivers; semiconductor lasers; synchronisation; chaos-based communication scheme; closed-loop configuration; emitter system; encrypted message; filtered optical feedback; information decoding; information encoding; receiver system; semiconductor laser; synchronization; unidirectional coupled chaos; Chaos; Decoding; Encoding; Information filtering; Information filters; Laser feedback; Optical coupling; Optical feedback; Optical filters; Semiconductor lasers; Chaos; dynamics; optical feedback; semiconductor lasers; synchronization;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2009.2016982

Filename

5153580