DITHERED TIME DELAYS AND CHAOS SYNCHRONIZATION IN LASERS WITH MULTIPLE FEEDBACKS
E. M. SHAHVERDIEV *
Institute of Physics, H. Javid Avenue, 33, Baku, AZ1143, Azerbaijan.
K. A. SHORE
School of Electronic Engineering, Bangor University, Dean St., Bangor, LL57 1UT, Wales, UK.
*Author to whom correspondence should be addressed.
By studying laser systems with multiple time delays, we demonstrate that the signatures of time delays in the autocorrelation coefficient and the mutual information of the laser output can be erased for systems with variable time delays. This property makes such laser systems highly suitable for secure chaos-based communication systems. We also present a report on wavelength chaos synchronization in both unidirectionally and bidirectionally coupled variable multiple time delay laser diodes with electro-optical feedbacks.
Keywords: Electro-optical feedbacks, variable multiple time delays, autocorrelation coefficient, mutual information, chaos-based communication systems