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Synchronization of chaotic injected-laser systems and its application to optical cryptography

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3 Author(s)
V. Annovazzi-Lodi ; Dipartimento di Elettronica, Pavia Univ., Italy ; S. Donati ; A. Scire

We demonstrate that two chaotic systems, each made by two coupled semiconductor lasers, can be synchronized using direct-optical feedback. The robustness of the proposed synchronization scheme against mismatch of source parameters and difference in starting conditions is tested by numerical simulations. Applications to secure data transmission are proposed, namely chaotic masking and chaotic shift keying (CSK)

Published in:

IEEE Journal of Quantum Electronics  (Volume:32 ,  Issue: 6 )