Analysis of chaos generated by a modulated self-pulsating laser diode

R. P. Walker; Paul Rees; I. Pierce; P. S. Spencer; G. W. Roberts

doi:10.1049/ip-opt:20045032

Analysis of chaos generated by a modulated self-pulsating laser diode

R. P. Walker, Paul Rees, I. Pierce, P. S. Spencer, G. W. Roberts

Research output: Contribution to journal › Article

3 Scopus citations

Abstract

The Lyapunov exponents and plotted bifurcation diagrams for a self-pulsating laser diode under periodic current modulation have been calculated. Different dynamics are obtained dependent on the modulation depth and frequency of the drive current. It is shown that it is very difficult to distinguish between regimes of high periodicity and true chaos. However by introducing a return map relating the pulse peak height and the inter pulse interval clear differences are observed between these regimes. This has consequences for the use of chaotic self-pulsating laser diodes for data encryption applications.

Original language	English (US)
Pages (from-to)	90-96
Number of pages	7
Journal	IEE Proceedings: Optoelectronics
Volume	152
Issue number	2
DOIs	https://doi.org/10.1049/ip-opt:20045032
State	Published - Apr 1 2005

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Computer Networks and Communications
Electrical and Electronic Engineering

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abstract = "The Lyapunov exponents and plotted bifurcation diagrams for a self-pulsating laser diode under periodic current modulation have been calculated. Different dynamics are obtained dependent on the modulation depth and frequency of the drive current. It is shown that it is very difficult to distinguish between regimes of high periodicity and true chaos. However by introducing a return map relating the pulse peak height and the inter pulse interval clear differences are observed between these regimes. This has consequences for the use of chaotic self-pulsating laser diodes for data encryption applications.",

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AU - Rees, Paul

AU - Pierce, I.

AU - Spencer, P. S.

AU - Roberts, G. W.

PY - 2005/4/1

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AB - The Lyapunov exponents and plotted bifurcation diagrams for a self-pulsating laser diode under periodic current modulation have been calculated. Different dynamics are obtained dependent on the modulation depth and frequency of the drive current. It is shown that it is very difficult to distinguish between regimes of high periodicity and true chaos. However by introducing a return map relating the pulse peak height and the inter pulse interval clear differences are observed between these regimes. This has consequences for the use of chaotic self-pulsating laser diodes for data encryption applications.

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