ISSN 0869-6632 (Print)
ISSN 2542-1905 (Online)

For citation:

Koryukin I. V. Identical chaotic synchronization and bidirectional message transmission in incoherently coupled semiconductor laser diodes. Izvestiya VUZ. Applied Nonlinear Dynamics, 2010, vol. 18, iss. 3, pp. 60-69. DOI: 10.18500/0869-6632-2010-18-3-60-69

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Language: 
Russian
Heading: 
Applied Problems of Nonlinear Oscillation and Wave Theory
Article type: 
Article
UDC: 
621.373.826
DOI: 
10.18500/0869-6632-2010-18-3-60-69

Identical chaotic synchronization and bidirectional message transmission in incoherently coupled semiconductor laser diodes

Autors: 
Koryukin Igor Valerevich, Institute of Applied Physics of the Russian Academy of Sciences
Abstract: 

A chaos-based communication scheme allowing simultaneous bidirectional message transmission (Opt. Lett. 32, 403, 2007) is investigated numerically. Incoherent feedback and coupling case is analyzed, which is expected in real long-distance optical communication systems. It is shown that identical synchronization of chaotic laser waveforms and bidirectional message transmission are possible as in the coherent coupling case. However, the chaotic regime at incoherent feedback and coupling is quite different. It is regular destabilized relaxation oscillations with the chaotic envelope. Such dynamics leads to restriction of the transmitting signal bit rate by a portion of relaxation oscillations frequency.

Key words: 
chaotic synchronization
secure information transmission
optical communications
semiconductor lasers
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Received: 
22.01.2010
Accepted: 
12.03.2010
Published: 
30.06.2010
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