2018-02-202018-02-202017-09-08CARDOSO, Markos Paulo. Estudo de fibras porosas com inclusões metálicas para guiamento em THz. Orientaor: João Crisóstomo Weyl Albuquerque Costa; Coorientador: Anderson Oliveira Silva. 2017. 104 f. Dissertação (Mestrado em Engenharia Elétrica) - Instituto de Tecnologia, Universidade Federal do Pará, Belém, 2017. Disponível em: <http://repositorio.ufpa.br/jspui/handle/2011/9465>. Acesso em:.https://repositorio.ufpa.br/handle/2011/9465The guidance of THz waves has been found of great importance to improve the performance of spectroscopy, imaging and sensing setups. One of the major challenges in designing such structures is the mitigation of the high losses presented by dielectric media in the THz spectral range (0.1 up to 10 THz). This work performs an analytical and numerical modeling of porous fibers with gold inclusions for THz guidance. The design of these metal-dieletric interface is capable to confine THz waves in the air region of the porous fiber, through the excitation of surface plasmons, modes that result from the resonant interaction between the incident electromagnetic radiation and the collective oscillation of free electrons on the metal surface. It is shown that from a suitable design of the gold layer, the effective losses can be reduced and a zero chromatic dispersion can be achieved as result of the coupling between the fiber modes and the surfasse plasmons.Acesso AbertoGuias de ondas - TestesFibras porosasPlasmons de superfícieWaveguidesPorous fibersTerahertzTerahertzSurface plasmonsDissertaçãoCNPQ::ENGENHARIAS::ENGENHARIA ELETRICA::TELECOMUNICACOESELETROMAGNETISMO APLICADOTELECOMUNICAÇÕES