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Veuillez utiliser cette adresse pour citer ce document : https://hdl.handle.net/20.500.12177/10504
Titre: Méthodes efficientes d’évaluation de la carte de comportement des données numériques désynchronisées et des hautes puissances transmises dans les environnements diélectriques complexes
Auteur(s): Ndi Nnanga, Bibiane Mireille
Directeur(s): Atangana, Jacques
Mots-clés: Optical Fiber
Chaos
Metamaterials
Regime
Raman effect
Shift
Pulse data
Behavior map
Date de publication: 2022
Editeur: Université de Yaoundé 1
Résumé: We present the analytical techniques for evaluating behavioral maps of the data pulse considered encoded, transcoded, propagating in two complex dielectric environments and subjected to the Raman effect. It has been shown in the scientific literature that this effect induces in the light pulse, bit mid-temporal shift. This temporal shift is converted to the corresponding center frequency shift. We demonstrate from an optical fiber environment that the evaluation technique established on classical collective coordinates leads to wrong results because the classical ansatz becomes inappropriate. To correct this inaccuracy, we formulate an efficient ansatz able to predict, with a good approximation, a fairly consistent evaluation of the bit mid-temporal shift and the center frequency shift of the data carrier pulses. The specific analytical techniques to metamaterials strongly disturbed by the Raman effect lead to the determination of the frequency ranges which give a physical significance to the characteristic parameters of the disturbing effects. High power numerical data behavior maps demonstrate under environmental conditions that not all frequencies are useful for quality transmission. Some can create chaos during propagation.
Pagination / Nombre de pages: 203
URI/URL: https://hdl.handle.net/20.500.12177/10504
Collection(s) :Thèses soutenues

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