Scientific Results

Incomplete homoclinic scenarios in semiconductor devices with optoelectronic feedback: Generation and synchronization

Year: 2010

Authors: Al-Naimee K., Abdalah S.F., Ciszak M., Meucci R., Arecchi F.T., Marino F.

Autors Affiliation: CNR, Istituto Nazionale di Ottica Applicata, Firenze, Italy; Dipartimento di Fisica, Università di Firenze, INFN, Sesto Fiorentino, Italy; Physics Department, College of Science, University of Baghdad, Baghdad, Iraq; High Institute of Telecommunications and Post, Salihiyah, Bghdad, Iraq

Abstract: We demonstrate experimentally and theoretically the existence of slow chaotic spiking sequences in the dynamics of semiconductor devices (lasers and LED) with ac-coupled optoelectronic feedback. We eventually show that this regime is the result of an incomplete homoclinic scenario to a saddle-focus, where an exact homoclinic connection does not occur. The synchronization scenarios have been fully investigated.

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KeyWords: Chaos feedback; Homoclinic; Homoclinic connection; Optoelectronic feedback; Saddle-focus, Semiconductor device manufacture; Semiconductor switches, Synchronization

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