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Polarization message encoding through vectorial chaos synchronization in vertical-cavity surface-emiting lasers

AuthorsScirè, Alessandro ; Mulet, Josep; Mirasso, Claudio R. ; Danckaert, Jan; San Miguel, Maxi
Keywords[PACS] Dynamical laser instabilities; noisy laser behavior
[PACS] Semiconductor lasers; laser diodes
[PACS] Laser applications
[PACS] Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics
Issue Date18-Mar-2003
PublisherAmerican Physical Society
CitationPhysical Review Letters 90(11): 113901 (2003)
AbstractWe show that self-pulsating vertical-cavity surface-emitting lasers can exhibit vectorial chaos, i.e., chaos in both intensity and polarization. The achievable synchronization degree of two such lasers is high when using a continuous control scheme and unidirectional coupling. We propose a novel encryption scheme, where the phase of the vectorial field is modulated. Therefore, the total intensity of these lasers remains synchronized while the intensities in the polarization modes (de)synchronize following the phase modulation at a ps time scale. This technique allows for transmission of secure data at high bit rates that are not limited by the relaxation oscillation frequency.
Description4 pages, 6 figures.-- PACS nrs.: 42.60.Mi, 42.55.Px, 42.62.–b, 42.65.Sf.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.90.113901
Appears in Collections:(IFISC) Artículos
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