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Contribution à l'étude et à l'optimisation de composants optoélectroniques

Abstract : In this thesis, we present modelling tools and powerful optimisation methods and their application to the study of optoelectronics components. We have written a software based on Beam Propagation Method which is used for the study of light propagation and absorption, and an hydrodynamic model for the carriers behaviour. We present a bibliographical study on physical data for materials based on InP substrate. First, we study and optimise a waveguide InP/InGaAs Heterojunction PhotoTransistor for microwave and millimetre wave applications. We present its behaviour and we show its possibilities and limits. Its optical structure can be improved by adding a quaternary layer under collector. Double Heterojunction PhotoTransistors can be realised for power applications. Then we study high responsivity and large coupling tolerance waveguide PIN photodiodes. Several solutions are studied. We show the interest of lensed structures, made of numerous confinement layers of various optical indexes. We study their optical and electrical performances. For their optimisation, we have written a Monte Carlo software coupled to a 2D-BPM, which allows the testing of thousands of randomly chosen structures. Finally, we have written a Genetic Algorithm coupled to a 2D-BPM. We show its interest for the multiparameter and multiobjective optimisation of optoelectronics devices. This type of algorithm is based on Darwin's theory of evolution. We apply it to the optimisation of TIR optical switches and cascade switches.
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https://tel.archives-ouvertes.fr/tel-00009353
Contributor : Vincent Magnin <>
Submitted on : Tuesday, May 31, 2005 - 4:54:57 PM
Last modification on : Wednesday, February 17, 2021 - 10:58:09 AM
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  • HAL Id : tel-00009353, version 1

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Vincent Magnin. Contribution à l'étude et à l'optimisation de composants optoélectroniques. Modélisation et simulation. Université des Sciences et Technologie de Lille - Lille I, 1998. Français. ⟨tel-00009353⟩

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