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dc.contributor.authorAmaral Sorrentino, Taciano
dc.contributor.authorQuintero Quiroz, Carlos Alberto
dc.contributor.authorAragoneses Aguado, Andrés
dc.contributor.authorTorrent Serra, Maria del Carmen
dc.contributor.authorMasoller Alonso, Cristina
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.identifier.citationAmaral, T., C. Quintero-Quiroz, Aragoneses, A., Torrent, M.C., Masoller, C. Effects of periodic forcing on the temporally correlated spikes of a semiconductor laser with feedback. "Optics express", 09 Març 2015, vol. 23, núm. 5, p. 5571-5581.
dc.description.abstractOptical excitable devices that mimic neuronal behavior can be building-blocks of novel, brain-inspired information processing systems. A relevant issue is to understand how such systems represent, via correlated spikes, the information of a weak external input. Semiconductor lasers with optical feedback operating in the low frequency fluctuations regime have been shown to display optical spikes with intrinsic temporal correlations similar to those of biological neurons. Here we investigate how the spiking laser output represents a weak periodic input that is implemented via direct modulation of the laser pump current. We focus on understanding the influence of the modulation frequency. Experimental sequences of inter-spike-intervals (ISIs) are recorded and analyzed by using the ordinal symbolic methodology that identifies and characterizes serial correlations in datasets. The change in the statistics of the various symbols with the modulation frequency is empirically shown to be related to specific changes in the ISI distribution, which arise due to different phase-locking regimes. A good qualitative agreement is also found between simulations of the Lang and Kobayashi model and observations. This methodology is an efficient way to detect subtle changes in noisy correlated ISI sequences and may be applied to investigate other optical excitable devices.
dc.format.extent11 p.
dc.subjectÀrees temàtiques de la UPC::Ciències de la visió::Òptica física
dc.subjectÀrees temàtiques de la UPC::Física
dc.subject.lcshOptics--Computer simulation
dc.subject.lcshSemiconductor lasers
dc.subject.otherexternal optical feedback
dc.subject.otherpower-dropout events
dc.subject.otherpermutation entropy
dc.subject.otherexcitable system
dc.titleEffects of periodic forcing on the temporally correlated spikes of a semiconductor laser with feedback
dc.subject.lemacÒptica -- Investigació
dc.subject.lemacLàsers de semiconductors
dc.contributor.groupUniversitat Politècnica de Catalunya. DONLL - Dinàmica no Lineal, Òptica no Lineal i Làsers
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorAmaral, T.; Quintero-Quiroz, C.; Aragoneses, A.; Torrent, M.C.; Masoller, C.
local.citation.publicationNameOptics express

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