Pulse propagation in a 1D array of excitable semiconductor lasers

Nonlinear pulse propagation is a major feature in continuously extended excitable systems. The persistence of this phenomenon in coupled excitable systems is expected. Here, we investigate theoretically the propagation of nonlinear pulses in a 1D array of evanescently coupled excitable semiconductor...

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Bibliographic Details
Published in:Chaos (Woodbury, N.Y.) N.Y.), 2020-08, Vol.30 (8), p.083136-083136
Main Authors: Alfaro-Bittner, K., Barbay, S., Clerc, M. G.
Format: Article
Language:English
Subjects:
Bifurcations
Engineering Sciences
Laser arrays
Lasers
Micro and nanotechnologies
Microelectronics
Nonlinear Sciences
Optics
Pattern Formation and Solitons
Photonic
Propagation
Propagation modes
Pulse propagation
Semiconductor lasers
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Summary:Nonlinear pulse propagation is a major feature in continuously extended excitable systems. The persistence of this phenomenon in coupled excitable systems is expected. Here, we investigate theoretically the propagation of nonlinear pulses in a 1D array of evanescently coupled excitable semiconductor lasers. We show that the propagation of pulses is characterized by a hopping dynamics. The average pulse speed and bifurcation diagram are characterized as a function of the coupling strength between the lasers. Several instabilities are analyzed such as the onset and disappearance of pulse propagation and a spontaneous breaking of the translation symmetry. The pulse propagation modes evidenced are specific to the discrete nature of the 1D array of excitable lasers.
ISSN:1054-1500
1089-7682
DOI:10.1063/5.0006195