The rule of bias current of semiconductor laser in chaos communications
Autori: Younis Y., Musa S.K., Abdalah S.F., Ahmed A.K., Meucci R., Al-Naimee K.A.
Affiliazione autori: Physics Dept., Education College, Mosul University, Iraq; CNR-Istituto Nazionali di Ottica, Largo E. Fermi 6, Firenze, 50125, Italy; Physics Dept., College of Science, Anbar University, Iraq; Dept. of Physics, College of Science, Al Nahrain University, Iraq; Dept. of Physics, College of Science, University of Baghdad, Iraq
Abstract: The dynamics of chaotic behavior of semiconductor laser diode with optical feedback from single mode fiber loop mirror has been experimentally studied. In the represented configuration the feedback strength was constant while the control parameter with laser injection current was variable, we found a wide range of optical intensity oscillation dynamics such as limit cycles, quasiperiodic and chaos oscillations. These dynamics were analyzed by time series and their extracted FFT power spectrums, phase diagrams (attractors), inter-spike intervals (ISI), these measurements enhanced by bifurcation diagram which clarified the chaotic regimes. Efficient bandwidth of chaotic signals has been calculated and observed to be increased with injection current. The complexity of chaotic system was measured by Shannon’s entropy function. (C) 2016 The Authors. Published by Elsevier B.V.
Giornale/Rivista: RESULTS IN PHYSICS
Volume: 6 Da Pagina: 243 A: 251
Parole chiavi: Bandwidth; Chaos; FeedbackDOI: 10.1016/j.rinp.2016.04.002Citazioni: 4dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2021-04-11Riferimenti 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