Exploració per autor "Masoller Alonso, Cristina"
Ara es mostren els items 41-60 de 138
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Dynamics of globally delay-coupled neurons displaying subthreshold oscillations
Masoller Alonso, Cristina; Torrent Serra, Maria del Carmen; García Ojalvo, Jordi (2009-08)
Article
Accés restringit per política de l'editorialWe study an ensemble of neurons that are coupled through their time-delayed collective mean field. The individual neuron is modelled using a Hodgkin–Huxley-type conductance model with parameters chosen such that the uncoupled ... -
Effects of periodic forcing on the temporally correlated spikes of a semiconductor laser with feedback
Amaral Sorrentino, Taciano; Quintero Quiroz, Carlos Alberto; Aragoneses Aguado, Andrés; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2015-03-09)
Article
Accés obertOptical 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, ... -
Emergence of spike correlations in periodically forced excitable systems
Reinoso, Jose A.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2016-09-27)
Article
Accés obert -
ENSO and SAM Influence on the Generation of Long Episodes of Rossby Wave Packets During Southern Hemisphere Summer
Pérez Fernández, Iago; Barreiro, Marcelo; Masoller Alonso, Cristina (2021-12-27)
Article
Accés obertThis study assesses the impact of low-frequency climate modes on Rossby Wave Packets (RWPs) during southern hemisphere summer. In particular, we focus on long-lived RWPs (lifespan above 8 days) and determine how El ... -
Entropy-based early detection of critical transitions in spatial vegetation fields
Tirabassi, Giulio; Masoller Alonso, Cristina (International Academy of Sciences (NAS), 2023-01-03)
Article
Accés obertIn semiarid regions, vegetated ecosystems can display abrupt and unexpected changes, i.e., transitions to different states, due to drifting or time-varying parameters, with severe consequences for the ecosystem and the ... -
Evaluating temporal correlations in time series using permutation entropy, ordinal probabilities and machine learning
Boaretto, Bruno R.; Budzinski, Roberto C.; Rossi, Kalel L.; Prado, Thiago L.; Lopes, Sergio R.; Masoller Alonso, Cristina (2021-08)
Article
Accés obertTime series analysis comprises a wide repertoire of methods for extracting information from data sets. Despite great advances in time series analysis, identifying and quantifying the strength of nonlinear temporal correlations ... -
Exact detection of direct links in networks of interacting dynamical units
Rubido, Nicolás; Marti, Arturo; Bianco-Martinez, Ezequiel; Grebogi, Celso; Baptista, Murilo; Masoller Alonso, Cristina (2014-09)
Article
Accés obertThe inference of an underlying network topology from local observations of a complex system composed of interacting units is usually attempted by using statistical similarity measures, such as cross-correlation (CC) and ... -
Experimental and Numerical Study of Locking of Low-Frequency Fluctuations of a Semiconductor Laser with Optical Feedback
Tiana Alsina, Jordi; Masoller Alonso, Cristina (2022-02)
Article
Accés obertWe study the output of a semiconductor laser with optical feedback operated in the lowfrequency fluctuations (LFFs) regime and subject to weak sinusoidal current modulation. In the LFF regime, the laser intensity exhibits ... -
Experimental and numerical study of the symbolic dynamics of a modulated external-cavity semiconductor laser
Aragoneses Aguado, Andrés; Sorrentino Amaral, Taciano; Perrone, Sandro; Gauthier, Daniel; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2014-02-21)
Article
Accés obertWe study the symbolic dynamics of a stochastic excitable optical system with periodic forcing. Specifically, we consider a directly modulated semiconductor laser with optical feedback in the low frequency fluctuations (LFF) ... -
Experimental characterization of the speckle pattern at the output of a multimode optical fiber
Halpaap, Donatus; Tiana Alsina, Jordi; Vilaseca Ricart, Meritxell; Masoller Alonso, Cristina (2019-09-30)
Article
Accés obertSpeckle patterns produced by coherent waves interfering with each other are undesirable in many imaging applications (for example, in laser projection systems) but on the other hand, they contain useful information that ... -
Experimental characterization of the transition to coherence collapse in a semiconductor laser with optical feedback
Panozzo, M.; Quintero Quiroz, Carlos Alberto; Tiana Alsina, Jordi; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (Institute of Physics (IOP), 2017-11-01)
Article
Accés obertSemiconductor lasers with time-delayed optical feedback display a wide range of dynamical regimes, which have found various practical applications. They also provide excellent testbeds for data analysis tools for characterizing ... -
Experimental investigation of a bistable system in the presence of noise and delay
Houlihan, J.; Goulding, D.; Busch, T.; Masoller Alonso, Cristina; Huyet, G. (2004-02-06)
Article
Accés obertWe experimentally analyze the behavior of a non-Markovian bistable system with noise, using a vertical cavity surface emitting laser with time-delayed optoelectronic feedback. The effects of the delayed feedback are observed ... -
Experimental study of different LFF regimes in semiconductor lasers with an external cavity
Aragoneses Aguado, Andrés; Zamora Munt, Jordi; Tiana Alsina, Jordi; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2011)
Comunicació de congrés
Accés restringit per política de l'editorial -
Experimental study of modulation waveforms for entraining the spikes emitted by a semiconductor laser with optical feedback
Tiana Alsina, Jordi; Quintero Quiroz, Carlos Alberto; Panozzo, M.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2018-04-02)
Article
Accés obertThe entrainment phenomenon, by which an oscillator adjusts its natural rhythm to an external periodic signal, has been observed in many natural systems. Recently, attention has focused on which are the optimal conditions ... -
Experimental study of spatial and temporal coherence in a laser diode with optical feedback
Duque Gijón, María; Tiana Alsina, Jordi; Masoller Alonso, Cristina (Optical Society of American (OSA), 2023-06-19)
Article
Accés obertOptical feedback can reduce the linewidth of a semiconductor laser by several orders of magnitude, but it can also cause line broadening. Although these effects on the temporal coherence of the laser are well known, a good ... -
Experimental study of speckle patterns generated by low-coherence semiconductor laser light
Halpaap Halpaap, Herbert Donatus; Marconi, Mathias; Yacomotti, Alejandro M.; Tiana Alsina, Jordi; Masoller Alonso, Cristina (Institute of Physics (IOP), 2020-06-01)
Article
Accés obertSpeckle is a wave interference phenomenon that has been studied in various fields, including optics, hydrodynamics, and acoustics. Speckle patterns contain spectral information of the interfering waves and of the scattering ... -
Experimental study of the neuron-like dynamics of a semiconductor laser with optical feedback and current modulation
Tiana Alsina, Jordi; Quintero Quiroz, Carlos Alberto; Masoller Alonso, Cristina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2020)
Text en actes de congrés
Accés obertExcitable lasers that mimic neuronal activity can be building blocks of ultra-fast neuro-inspired information processing systems, which can revolutionize the fields of optical signal processing, optical computing and ... -
Exploiting the Nonlinear Dynamics of Optically Injected Semiconductor Lasers for Optical Sensing
Torre, Maria Susana; Masoller Alonso, Cristina (2019-06-01)
Article
Accés obertOptically injected semiconductor lasers are known to display a rich variety of dynamic behaviours, including the emission of excitable pulses, and of rare giant pulses (often referred to as optical rogue waves). Here, we ... -
Extreme intensity pulses in a semiconductor laser with a short external cavity
Reinoso, Jose A.; Zamora Munt, Jordi; Masoller Alonso, Cristina (2013-06)
Article
Accés obertWe present a numerical study of the pulses displayed by a semiconductor laser with optical feedback in the short-cavity regime, such that the external cavity round-trip time is shorter than the laser relaxation oscillation ... -
Fast and effective pseudo transfer entropy for bivariate data-driven causal inference
Silini, Riccardo; Masoller Alonso, Cristina (Nature, 2021-04-19)
Article
Accés obertIdentifying, from time series analysis, reliable indicators of causal relationships is essential for many disciplines. Main challenges are distinguishing correlation from causality and discriminating between direct and ...