Performance characteristics of positive and negative delayed feedback on chaotic dynamics of directly modulated InGaAsP semiconductor lasers

The chaotic dynamics of directly modulated semiconductor lasers with delayed optoelectronic feedback is studied numerically. The effects of positive and negative delayed optoelectronic feedback in producing chaotic outputs from such lasers with nonlinear gain reduction in its optimum value range is...

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Bibliographic Details
Published inPramāṇa Vol. 71; no. 6; pp. 1259 - 1269
Main Authors Krishna, Bindu M., John, Manu P., Nandakumaran, V. M.
Format Journal Article
LanguageEnglish
Published India Springer-Verlag 01.12.2008
Subjects
Astronomy
Astrophysics and Astroparticles
Observations and Techniques
Physics
Physics and Astronomy
05.45.a
42.55.Px
05.45.Pq
Directly modulated semiconductor lasers
chaotic dynamics
delayed optoelectronic feedback
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Summary:The chaotic dynamics of directly modulated semiconductor lasers with delayed optoelectronic feedback is studied numerically. The effects of positive and negative delayed optoelectronic feedback in producing chaotic outputs from such lasers with nonlinear gain reduction in its optimum value range is investigated using bifurcation diagrams. The results are confirmed by calculating the Lyapunov exponents. A negative delayed optoelectronic feedback configuration is found to be more effective in inducing chaotic dynamics to such systems with nonlinear gain reduction factor in the practical value range.
ISSN:0304-4289
0973-7111
DOI:10.1007/s12043-008-0180-3