2017-01-102017-01-102016-09-09ALMEIDA, Léo César Parente de. Obtenção e análise da performance de portas lógicas totalmente ópticas baseadas em guias de onda de cristais fotônicos. Orientador: Marcos Benedito Caldas Costa. 2016. 77 f. Dissertação (Mestrado em Engenharia Elétrica.) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2016. Disponível em: http://repositorio.ufpa.br/jspui/handle/2011/7269. Acesso em:.https://repositorio.ufpa.br/handle/2011/7269In this work, we used the concept of Photonic Crystals (PhCs) for the computational simulation of two all-optical logic gates, the NOT and NAND gates. These new all-optical structures consist of a Photonic Crystal Ring Resonator (PCRR) in two dimensions (2-D) made of dielectric rods silicon (Si) in air substrate. The Plane Wave Expansion (PWE) and the Finite Difference Time Domain (FDTD) methods are used to analyze the behavior of these structures. The PWE method is used to calculate the Photonic Band Gap (PBG) of the PhC structures, that is from 0.2654 to 0.3897 (a / λ). The square lattices of logic gates (NOT and NAND) designed are implemented on the operational wavelength of 1700 nm. The simulation results show that the proposed structures are potential candidates for the design of ultra-fast optical digital circuits and highly advantageous with high transmission power, simple design, and are strongly applicable to the manufacture of Photonic Integrated Circuits (PICs) due to their simple structure and its clear operating principle. KEYWORDS: All-Optical NOT Logic Gate, Photonic Crystal Ring Resonator, Finite Difference Time Domain, Contrast Ratio.Acesso AbertoÓtica de cristaisPorta lógica totalmente óptica (AOLG)Diferenças finitas no domínio do tempo (DFTD)Anel ressonador de cristal fotônico (PCRR)Razão de contraste (CR)All-optical not logic gate (AOLG)Photonic crystal ring resonator(PCRR)Finite difference time domain FDTD)Contraste ratio (CR)DissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::TELECOMUNICACOES::TEORIA ELETROMAGNETICA, MICROONDAS, PROPAGACAO DE ONDAS, ANTENASCNPQ::CIENCIAS EXATAS E DA TERRA::MATEMATICA::MATEMATICA APLICADA::ANALISE NUMERICA