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

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

2008-06-20

arxiv.org/abs/0806.3375v1

Physics

Optics

8 pages, 5 figures

Scientific paper

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.

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