Exploració per autor "Masoller Alonso, Cristina"
Ara es mostren els items 1-20 de 138
-
20 years of ordinal patterns: perspectives and challenges
Leyva Callejas, Inmaculada; Martínez, Johann H.; Masoller Alonso, Cristina; Rosso, Osvaldo A.; Zanin, Massimiliano (Institute of Physics (IOP), 2022-05)
Article
Accés obertIn 2002, in a seminal article, Bandt and Pompe proposed a new methodology for the analysis of complex time series, now known as Ordinal Analysis. The ordinal methodology is based on the computation of symbols (known as ... -
A study of the air-sea interaction in the South Atlantic Convergence Zone through Granger causality
Tirabassi, Giulio; Masoller Alonso, Cristina; Barreiro, Marcelo (Wiley, 2015-10-01)
Article
Accés obertAir-sea interaction in the region of the South Atlantic Convergence Zone (SACZ) is studied using Granger causality (GC) as a measure of directional coupling. Calculation of the area weighted connectivity indicates that the ... -
Abrupt transition from low-coherence to high-coherence radiation in a semiconductor laser with optical feedback
Duque Gijón, María; Masoller Alonso, Cristina; Tiana Alsina, Jordi (2023-01-19)
Article
Accés obertSemiconductor lasers are very sensitive to optical feedback. Although it is well known that coherent feedback lowers the threshold of the laser, the characteristics of the transition from low-coherence radiation—dominated ... -
All optical implementation of a stochastic logic gate using a VCSEL with external optical injection
Perrone, S.; Masoller Alonso, Cristina; Vilaseca Alavedra, Ramon (2011)
Text en actes de congrés
Accés obertWe perform numerical simulations of the dynamics of two VCSELs optically coupled in a master-slave configuration. We show that the interplay of nonlinearity and spontaneous emission noise can yield logic behavior, and the ... -
Analysis of noise-induced temporal correlations in neuronal spike sequences
Reinoso, Jose A.; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2016-11-01)
Article
Accés obertWe investigate temporal correlations in sequences of noise-induced neuronal spikes, using a symbolic method of time-series analysis. We focus on the sequence of time-intervals between consecutive spikes (inter-spike-intervals, ... -
Analysis of the spike rate and spike correlations in modulated semiconductor lasers with optical feedback
Amaral Sorrentino, Taciano; Quintero Quiroz, Carlos Alberto; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2015-11-01)
Article
Accés obertWe investigate experimentally how changes in the external cavity length and dc current affect the mean interspike-interval (ISI) in a modulated semiconductor laser with optical feedback operating in the low-frequency ... -
Anticipating the response of excitable systems driven by random forcing
Ciszak, M.; Calvo, O.; Masoller Alonso, Cristina; Mirasso, C. R.; Toral, R. (2003-05-23)
Article
Accés obertWe study the regime of anticipated synchronization in unidirectionally coupled model neurons subject to a common external aperiodic forcing that makes their behavior unpredictable. We show numerically and by analog hardware ... -
Anticipation in the synchronization of chaotic semiconductor lasers with optical feedback
Masoller Alonso, Cristina (2001-03-26)
Article
Accés obertThe synchronization of chaotic semiconductor lasers with optical feedback is studied numerically in a one-way coupling configuration, in which a small amount of the intensity of one laser (master laser) is injected coherently ... -
Applications of Photonics Technologies: block 1 Introduction to Photonics and Properties of Light
Masoller Alonso, Cristina (Universitat Politècnica de Catalunya, 2020)
Apunts
Accés obert -
Are the spikes emitted by a semiconductor laser with feedback similar to neuronal spikes?
Quintero Quiroz, Carlos Alberto; Amaral Sorrentino, Taciano; Aragoneses, Andrés; Torrent Serra, Maria del Carmen; Masoller Alonso, Cristina (2017)
Text en actes de congrés
Accés restringit per política de l'editorialWe study experimentally a semiconductor laser operating in a feedback-induced regime known as low frequency fluctuations (LFFs), in which the laser emits a spiking output that resembles the spikes of biological neurons. ... -
Assessing causal dependencies in climatic indices
Silini, Riccardo; Tirabassi, Giulio; Barreiro Parrillo, Marcelo; Masoller Alonso, Cristina; Ferranti, Laura (2023-07)
Article
Accés obertWe evaluate causal dependencies between thirteen indices that represent large-scale climate patterns (El Nino/Southern Oscillation, the North Atlantic Oscillation, the Pacifc Decadal Oscillation, etc.) using a recently ... -
Assessing diversity in multiplex networks
Carpi, Laura C.; Schieber, Tiabo A.; Pardalos, Panos M.; Marfany Nadal, Gemma; Masoller Alonso, Cristina; Díaz Guilera, Albert; Ravetti, Martin G. (Nature, 2019-03-14)
Article
Accés obertDiversity, understood as the variety of different elements or configurations that an extensive system has, is a crucial property that allows maintaining the system’s functionality in a changing environment, where failures, ... -
Assessing the direction of climate interactions by means of complex networks and information theoretic tools
Deza, Juan Ignacio; Barreiro, Marcelo; Masoller Alonso, Cristina (Institute of Physics (IOP), 2015-03-01)
Article
Accés obertAn estimate of the net direction of climate interactions in different geographical regions is made by constructing a directed climate network from a regular latitude-longitude grid of nodes, using a directionality index ... -
Bifurcation to square-wave switching in orthogonally delay-coupled semiconductor lasers: Theory and experiment
Masoller Alonso, Cristina; Sukow, D.; Gavrielides, A.; Sciamanna, M. (2011-08-22)
Article
Accés obertWe analyze the dynamics of two semiconductor lasers with so-called orthogonal time-delayed mutual coupling: the dominant TE (x) modes of each laser are rotated by 90∘ (therefore, TM polarization or y) before being coupled ... -
Bifurcations in 1D systems: saddle-node, transcritical, pitchfork
Masoller Alonso, Cristina (Universitat Politècnica de Catalunya, 2021-03)
Apunts
Accés obert -
Binary image classification using collective optical modes of an array of nanolasers
Tirabassi, Giulio; Ji, Kaiwen; Masoller Alonso, Cristina; Yacomotti, Alejandro M. (2022-09)
Article
Accés obertRecent advancements in nanolaser design and manufacturing open up unprecedented perspectives in terms of high integration densities and ultra-low power consumption, making these devices ideal for high-performance optical ... -
Characterization of speckle patterns generated by a semiconductor laser with optical feedback for speckle reduction in retinal imaging instruments
Halpaap, Donatus; Tiana Alsina, Jordi; Vilaseca Ricart, Meritxell; Masoller Alonso, Cristina (International Society for Photo-Optical Instrumentation Engineers (SPIE), 2019)
Comunicació de congrés
Accés restringit per política de l'editorialWe study experimentally the operating conditions of a semiconductor laser diode subjected to different amounts of optical feedback in order to find a stable and cost-efficient solution for speckle reduction in double-pass ... -
Characterizing signal encoding and transmission in class i and class II neurons via ordinal time-series analysis
Estarellas Martín, Cristian; Masoliver Vila, Maria; Masoller Alonso, Cristina; Mirasso Santos, Claudio Rubén (Institute of Physics (IOP), 2020-01-16)
Article
Accés obertNeurons encode and transmit information in spike sequences. However, despite the effort devoted to understand the encoding and trans-mission of information, the mechanisms underlying the neuronal encoding are not yet fully ... -
Climate networks at inter-annual and intra-season time scales constructed via ordinal time-series analysis
Deza, Juan Ignacio; Barreiro, Marcelo; Masoller Alonso, Cristina (2012)
Comunicació de congrés
Accés restringit per política de l'editorial -
Coexistence of attractors in a laser diode with optical feedback from a large external cavity
Masoller Alonso, Cristina (1994-09)
Article
Accés obertThe coexistence of several attractors in the coherent collapsed state of a laser diode with optical feedback is investigated. These attractors are unstable tori that bifurcate from different external cavity modes. As the ...