Chaos synchronization and chaotic signal masking in semiconductor lasers with optical feedback

Author

Ohtsubo, Junji

Author_Institution

Fac. of Eng., Shizuoka Univ., Hamamatsu, Japan

Volume

38

Issue

9

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1141

Lastpage

1154

Abstract

Theoretical and experimental investigations of chaos synchronization and its application to chaotic data transmissions in semiconductor lasers with optical feedback are presented. Two schemes of chaos synchronization-complete and generalized synchronization-are discussed in the delay differential systems. The conditions for chaos synchronization in the systems and the robustness for the parameter mismatches are studied. The possibility of secure communications based on the chaos masking technique in semiconductor lasers with optical feedback is also discussed, and message transmission of a 1.5-GHz sinusoidal signal is demonstrated. The method of bandwidth enhancement of chaotic carriers is proposed for broad-band chaos communications.

Keywords

delay-differential systems; laser feedback; optical chaos; optical communication; semiconductor lasers; synchronisation; telecommunication security; 1.5 GHz; broad-band chaos communications; chaos masking technique; chaos synchronization; chaotic carriers; chaotic data transmissions; chaotic signal masking; delay differential systems; message transmission; optical feedback; optical fibre communications; parameter mismatches; secure communications; semiconductor lasers; sinusoidal signal; Bandwidth; Chaos; Chaotic communication; Data communication; Delay systems; Laser feedback; Laser theory; Optical feedback; Robustness; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2002.801883

Filename

1027756