TY - JOUR
T1 - Synchronized chaotic optical communications at high bit rates
AU - Liu, Jia Ming
AU - Chen, How Foo
AU - Tang, Shuo
N1 - Funding Information:
Manuscript received March 1, 2002; revised April 29, 2002. This work was supported by the Army Research Office under Contract DAAG55-98-1-0269. The authors are with the Department of Electrical Engineering, University of California, Los Angeles, Los Angeles, CA 90095-159410 USA. Publisher Item Identifier 10.1109/JQE.2002.802045.
PY - 2002/9
Y1 - 2002/9
N2 - 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.
AB - 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.
KW - Chaos
KW - Chaotic communications
KW - Cryptography
KW - Optical communications
KW - Semiconductor lasers
KW - Synchronization
UR - http://www.scopus.com/inward/record.url?scp=0036713749&partnerID=8YFLogxK
U2 - 10.1109/JQE.2002.802045
DO - 10.1109/JQE.2002.802045
M3 - Article
AN - SCOPUS:0036713749
SN - 0018-9197
VL - 38
SP - 1184
EP - 1196
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
IS - 9
ER -