2D periodic structure featuring negative group velocity of bloch waves
作者： Aldo De Sabata , Ladislau Matekovits , Andrei Silaghi , Ulrich L. Rohde , Marius Alexandru Silaghi
DOI: 10.1109/ICEAA.2015.7297402
关键词: Metamaterial 、 Dispersion (optics) 、 Split-ring resonator 、 Electronic mail 、 Optics 、 Physics 、 Dispersion relation 、 Wave propagation 、 Molecular physics 、 Group velocity 、 Bloch wave
摘要: A 2D, volumetric (i.e., non-planar), structure consisting of two dielectric layers, loaded by various metal inclusions on multiple-periodic grids and closed confining planes is introduced in view advanced dispersion engineering related applications. Full-wave simulation has been used to demonstrate that, for axial propagation, the presents (i) a large electromagnetic band-gap (ii) modes that have anti-parallel phase group velocities different frequency bands where they do not interact with other modes.
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