Pseudo-spatial coherence resonance in an excitable laser with long delayed feedback

Year: 2017

Authors: Marino F., Giacomelli G.

Autors Affiliation: CNR – Istituto Nazionale di Ottica, largo E. Fermi 6, Firenze, I-50125, Italy; CNR – Istituto dei Sistemi Complessi, via Madonna del Piano 10, Sesto Fiorentino, I-50019, Italy

Abstract: The effect of noise in an excitable semiconductor laser with feedback is studied in the framework of the spatio-temporal representation of long delayed systems. Propagation, noise-induced creation, and destruction of excitable pulses in the pseudo time are observed. The addition of a variable quantity of noise leads to the occurrence of a phenomenon that we term “pseudo-spatial coherence resonance.” A phenomenological model well describes the system and allows for a comparison with the experimental observations. A simple Monte Carlo approach is also introduced and permits to explain the features observed in terms of the key dynamical ingredients of the physical system.

Journal/Review: CHAOS

Volume: 27 (11)      Pages from: 114302-1  to: 114302-8

KeyWords: acoustic noise, monte Carlo Methods, temporal logic, bistable, signal processing
DOI: 10.1063/1.5006744

Citations: 16
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