| Issue |
EPL
Volume 81, Number 4, February 2008
|
|
|---|---|---|
| Article Number | 40005 | |
| Number of page(s) | 5 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/81/40005 | |
| Published online | 21 January 2008 | |
Experimental demonstration of bidirectional chaotic communication by means of isochronal synchronization
Nonlinear Dynamics and Chaos Group, Departamento de Física, Universidad Rey Juan Carlos Tulipán s/n, 28933 Móstoles, Madrid, Spain
Corresponding authors: alexandre.wagemakers@urjc.es miguel.sanjuan@urjc.es
Received:
17
September
2007
Accepted:
17
December
2007
We give the first experimental demonstration of simultaneous bidirectional communication through chaotic carriers thanks to the phenomenon of isochronal synchronization. Two Mackey-Glass electronic circuits with chaotic behaviour exchange their signals through a coupling line with delay. When the internal feedback of the circuits and the coupling are accurately matched, isochronal synchronization arises. Under this dynamical regime, we introduce a binary message at both outputs and recover it at the opposite circuit. Finally, we discuss the security of this kind of communication system by analyzing the message recovered by a potential eavesdropper.
PACS: 05.45.Xt – Synchronization; coupled oscillators / 42.55.Px – Semiconductor lasers; laser diodes / 42.65.Sf – Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics
© EPLA, 2008
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