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Título: | Synchronization of tunable asymmetric square-wave pulses in delay-coupled optoelectronic oscillators |
Autor: | Martínez-Llinàs, Jade CSIC ORCID; Colet, Pere CSIC ORCID ; Erneux, Thomas | Fecha de publicación: | 18-mar-2015 | Editor: | American Physical Society | Citación: | Physical Review E 91(3): 032911 (2015) | Resumen: | We consider a model for two delay-coupled optoelectronic oscillators under positive delayed feedback as prototypical to study the conditions for synchronization of asymmetric square-wave oscillations, for which the duty cycle is not half of the period. We show that the scenario arising for positive feedback is much richer than with negative feedback. First, it allows for the coexistence of multiple in- and out-of-phase asymmetric periodic square waves for the same parameter values. Second, it is tunable: The period of all the square-wave periodic pulses can be tuned with the ratio of the delays, and the duty cycle of the asymmetric square waves can be changed with the offset phase while the total period remains constant. Finally, in addition to the multiple in- and out-of-phase periodic square waves, low-frequency periodic asymmetric solutions oscillating in phase may coexist for the same values of the parameters. Our analytical results are in agreement with numerical simulations and bifurcation diagrams obtained by using continuation techniques. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevE.91.032911 | URI: | http://hdl.handle.net/10261/132890 | DOI: | 10.1103/PhysRevE.91.032911 | Identificadores: | e-issn: 1550-2376 issn: 1539-3755 |
Aparece en las colecciones: | (IFISC) Artículos |
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optoelectronic_oscillators-Martinez.pdf | 1,73 MB | Adobe PDF | Visualizar/Abrir |
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