Multimode Synchronization of Chaotic Semiconductor Ring Laser and its Potential in Chaos Communication

We investigate numerically the synchronization of two multimode semiconductor ring lasers (SRLs) and demonstrate its potential in chaos-based communication. The extent of the SRL's chaos regime under external optical feedback is evaluated in terms of bifurcation diagram and the optimal feedback...

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Bibliographic Details
Published in:IEEE journal of quantum electronics Vol. 50; no. 3; pp. 148 - 157
Main Authors: Kang, Zexin, Sun, Jiang, Ma, Lin, Qi, Yanhui, Jian, Shuisheng
Format: Journal Article
Language:English
Published: New York IEEE 01.03.2014
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Amplification
amplifier noise
Cavity resonators
Chaos theory
Chaotic communication
Fiber optics
message encoding and decoding
multimode synchronization
Noise
Optical fibers
Optical transmitters
parameters mismatch
Receivers
Ring lasers
Semiconductor ring laser (SRL)
Semiconductors
Synchronism
Synchronization
ISSN:0018-9197, 1558-1713
Online Access:Get full text
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Summary:We investigate numerically the synchronization of two multimode semiconductor ring lasers (SRLs) and demonstrate its potential in chaos-based communication. The extent of the SRL's chaos regime under external optical feedback is evaluated in terms of bifurcation diagram and the optimal feedback strength range for reliable chaotic communication is discussed as well. Under proper conditions, the receiver SRL can be satisfactorily synchronized with the transmitter SRL due to the injection-locking effect. The message encoding and decoding using chaos shift keying technique have been analyzed from the point of view of the total lasing output. The possibility of recovering the message using unidirectional output (clockwise output or counterclockwise output) is also examined and compared with that of the total output. The tolerance of the proposed scheme to the SRL's fabrication limitation and parameter mismatch are studied. In view of these results, chaos-based synchronization and communication over fiber optical link, with or without the amplified spontaneous emission noise induced by amplification, are demonstrated. We also check the negative influence of fiber nonlinearity on the system transmission performance.
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ISSN:0018-9197
1558-1713
DOI:10.1109/JQE.2014.2299593