Nonlinear Dynamics of Multiple Quantum Well Lasers: Chaos and Multistability

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Nonlinear Dynamics of Multiple Quantum Well Lasers: Chaos and Multistability

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Title: Nonlinear Dynamics of Multiple Quantum Well Lasers: Chaos and Multistability
Author: Jijo, P U; Dr. Nandakumaran, V M
Abstract: This thesis presents analytical and numerical results from studies based on the multiple quantum well laser rate equation model. We address the problem of controlling chaos produced by direct modulation of laser diodes. We consider the delay feedback control methods for this purpose and study their performance using numerical simulation. Besides the control of chaos, control of other nonlinear effects such as quasiperiodicity and bistability using delay feedback methods are also investigated.A number of secure communication schemes based on synchronization of chaos semiconductor lasers have been successfully demonstrated theoretically and experimentally. The current investigations in these field include the study of practical issues on the implementations of such encryption schemes. We theoretically study the issues such as channel delay, phase mismatch and frequency detuning on the synchronization of chaos in directly modulated laser diodes. It would be helpful for designing and implementing chaotic encryption schemes using synchronization of chaos in modulated semiconductor lasers.
Description: International School of Photonics, Cochin university of Science & Technology
URI: http://dyuthi.cusat.ac.in/xmlui/purl/2109
Date: 2008-08


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