Semiconductor lasers driven by self-sustained chaotic electronic oscillators and applications to optical chaos cryptography

In this work, we numerically study the dynamics of vertical cavity surface emitting laser (VCSEL) firstly when it is driven by Chua's oscillator, secondly in case where it is driven by a broad frequency spectral bandwidth chaotic oscillator developed by Nana et al. [Commun. Nonlinear Sci. Numer...

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Bibliographic Details
Published inChaos (Woodbury, N.Y.) Vol. 22; no. 3; p. 033108
Main Authors Kingni, Sifeu Takougang, Mbé, Jimmi Hervé Talla, Woafo, Paul
Format Journal Article
LanguageEnglish
Published United States 01.09.2012
Subjects
Communication
Electronics
Lasers, Semiconductor
Nonlinear Dynamics
Optics and Photonics - methods
Oscillometry - methods
Time Factors
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Summary:In this work, we numerically study the dynamics of vertical cavity surface emitting laser (VCSEL) firstly when it is driven by Chua's oscillator, secondly in case where it is driven by a broad frequency spectral bandwidth chaotic oscillator developed by Nana et al. [Commun. Nonlinear Sci. Numer. Simul. 14, 2266 (2009)]. We demonstrated that the VCSEL generated robust chaotic dynamics compared to the ones found in VCSEL subject to a sinusoidally modulated current and therefore it is more suitable for chaos encryption techniques. The synchronization characteristics and the communication performances of unidirectional coupled VCSEL driven by the broad frequency spectral bandwidth chaotic oscillators are investigated numerically. The results show that high-quality synchronization and transmission of messages can be realized for suitable system parameters. Chaos shift keying method is successfully applied to encrypt a message at a high bitrate.
ISSN:1089-7682
DOI:10.1063/1.4733702