2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85069We analyze transmission of a layered photonic structure (a one-dimensional photonic crystal) consisting of alternating slabs of two materials with positive and negative refractive index. For the periodic structure with zero averaged refractive index, we demonstrate a number of unique properties of the beam transmission observed in strong beam modification and reshaping.3 pages, 4 figuresOpticsCondensed Mattertext