2014-09-172014-09-172014-03-28MIRANDA, André Moacir Lage. Estratégia de projeto de atribuição de comprimento de onda com restrição de camada física em redes WDM. 2014. 92 f. Orientador: João Crisóstomo Weyl Albuquerque Costa; Coorientador: Marcelo Eduardo Vieira Segatto. Tese (Doutorado em Engenharia Elétrica) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2014. Disponível em:http://repositorio.ufpa.br/jspui/handle/2011/5745. Acesso em:.https://repositorio.ufpa.br/handle/2011/5745The system based on Wavelength Division Multiplex (WDM) has been considered as a mature technology to be used in the backbone of optical networks. However, finding an optical solution for Routing and Wavelength Assignment (RWA) algorithm in the design and operation of the networks remains an open issue. The research conducted in this thesis, addresses the main issues regarding the process of Wavelength Assignment (RWA) in WDM systems, and as result a methodology that minimizes the degradation of the optical signal generated by Cross-Phase Modulation (XPM), has been proposed. This proposal consists of a hybrid methodology based on Graph-Coloring and Genetic Algorithm (GA), where the first has the function of reducing the number of necessary wavelengths to meet the traffic matrix (known a priori), and the latter will find the cannels activation order on the wavelengths grid with the aim of reducing the XPM effect. This proposal was compared with the First-Fit algorithm in different scenarios and network topologies, and has shown a significant reduction in blocking probability.porAcesso AbertoRede óptica translúcidaAlgoritmo de atribuição de comprimento de ondaComputação evolucionáriaModulação de fase cruzadaRestrição de camada físicaMultiplexação por divisão de comprimento de ondaCross-phase modulationsEvolutionary computationPhysical layer impairmentsRouting and wavelength assignment algorithmsTranslucent optical networksWavelength division multiplexationTeseCNPQ::CIENCIAS EXATAS E DA TERRA::CIENCIA DA COMPUTACAO::METODOLOGIA E TECNICAS DA COMPUTACAO::LINGUAGENS DE PROGRAMACAOCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::TELECOMUNICACOES::SISTEMAS DE TELECOMUNICACOES