Title :
Synchronization of chaotic injected-laser systems and its application to optical cryptography
Author :
Annovazzi-Lodi, Valerio ; Donati, Silvano ; Scire, Alessandro
Author_Institution :
Dipartimento di Elettronica, Pavia Univ., Italy
fDate :
6/1/1996 12:00:00 AM
Abstract :
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)
Keywords :
cryptography; laser feedback; optical chaos; optical communication; optical couplers; semiconductor lasers; synchronisation; chaotic injected-laser systems; chaotic masking; chaotic shift keying; chaotic systems; coupled semiconductor lasers; direct-optical feedback; mismatch; numerical simulations; optical cryptography; secure data transmission; source parameters; starting conditions; synchronization; synchronization scheme; Chaos; Chaotic communication; Cryptography; Fiber nonlinear optics; High speed optical techniques; Laser feedback; Optical attenuators; Optical feedback; Optical modulation; Semiconductor lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
