Experimental evidence of coherence resonance in an optical system
Anno: 2000
Autori: Giacomelli G., Giudici M., Balle S., Tredicce J.
Affiliazione autori: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy; Departamento de Física Interdisciplinar, Instituto Mediterraneo de Estudios Avanzados (CSIC-UIB), 07071 Palma de Mallorca, Spain;
Institut Non-Linéaire de Nice, UMR 6618 Centre National de la Recherche Scientifique-Université de Nice Sophia-Antipolis, 06560 Valbonne, France
(Received 13 July 1999)
Abstract: Experimental evidence of coherence resonance in an optical system is reported. We shaw that the regularity of the excitable pulses in the intensity of a laser diode with optical feedback increases when adding noise, up to an optimal value of the noise strength. Both phase and amplitude fluctuations of the pulses play a relevant role in the dynamics of the system. We introduce the joint entropy of the two variables to generalize the indicator of coherence, and we put in evidence the mechanism of destruction of the excitable orbit after the resonance.
Giornale/Rivista: PHYSICAL REVIEW LETTERS
Volume: 84 (15) Da Pagina: 3298 A: 3301
Parole chiavi: coherence resonance; optical system; DOI: 10.1103/PhysRevLett.84.3298Citazioni: 206dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-05-12Riferimenti tratti da Isi Web of Knowledge: (solo abbonati) Link per visualizzare la scheda su IsiWeb: Clicca quiLink per visualizzare la citazioni su IsiWeb: Clicca qui