Synchronized chaotic optical communications at high bit rates

Author

Liu, Jia-Ming ; Chen, How-Foo ; Tang, Shuo

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

38

Issue

9

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1184

Lastpage

1196

Abstract

Basic issues regarding synchronized chaotic optical communications at high bit rates using semiconductor lasers are considered. Recent experimental results on broadband, high-frequency, phase-locked chaos synchronization, and message encoding-decoding at 2.5 Gb/s are presented. System performance at a bit rate of 10 Gb/s is numerically studied for the application of three encryption schemes, namely chaos shift keying, chaos masking, and additive chaos modulation, to three chaotic semiconductor laser systems, namely the optical injection system, the optical feedback system, and the optoelectronic feedback system. By causing synchronization error in the forms of synchronization deviation and desynchronization bursts, the channel noise and the laser noise both have significant effects on the system performance at high bit rates. Among the three laser systems, the optoelectronic feedback system has the best performance while the optical feedback system has the worst. Among the three encryption schemes, only the performance of additive chaos modulation with low-noise lasers is acceptable at high bit rates.

Keywords

decoding; electro-optical modulation; encoding; laser feedback; laser mode locking; laser noise; optical chaos; optical fibre communication; semiconductor device noise; semiconductor lasers; synchronisation; telecommunication security; 10 Gbit/s; 2.5 Gbit/s; additive chaos modulation; broadband high-frequency phase-locked chaos synchronization; channel noise; chaos masking; chaos shift keying; chaotic semiconductor laser systems; desynchronization bursts; encryption schemes; high bit rates; low-noise lasers; message encoding-decoding; optical feedback system; optical injection system; optoelectronic feedback system; semiconductor lasers; synchronization error; synchronized chaotic optical communications; system performance; Bit rate; Chaotic communication; Cryptography; Laser feedback; Laser noise; Optical feedback; Optical fiber communication; Optical noise; Semiconductor lasers; System performance;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2002.802045

Filename

1027761