López Aymerich, ElenaRomano Rodríguez, AlbertNúñez Lasús, Zoilo2019-10-032019-10-032019-06https://hdl.handle.net/2445/141664Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2019, Tutors: Elena López Aymerich, Albert Romano RodriguezIn this work we study the properties of 2D photonic crystals based on silicon nanopillars through electromagnetic simulations via the finite-difference time-domain method. Bandgaps will be analyzed through transmission spectra across different configurations and defects introduced in the structure in visible and near-infrared regions. An optimal bandgap size is found in terms of gap-midgap for an specific radius-to-pitch ratio. Additionally a modified waveguide is studied, showing a ressonance peak which can be used as a narrow-band filter.5 p.application/pdfengcc-by-nc-nd (c) Núñez, 2019http://creativecommons.org/licenses/by-nc-nd/3.0/es/Cristall fotònicNanoestructuresTreballs de fi de grauPhotonic crystalNanostructuresBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess