Navarro Cía, MiguelRodríguez Ulibarri, PabloBeruete Díaz, Miguel2014-06-252014-06-2520131367-2630 (electronic)131510.1088/1367-2630/15/1/013003https://academica-e.unavarra.es/handle/2454/11004UPNa. Departamento de Ingeniería Eléctrica y Electrónica. Laboratorio de Ondas Milimétricas y TeraherciosBy backing or sandwiching a holey metal layer with or between isotropic dielectric slabs, additional peaks of transmission within the long-wavelength regime arise as a result of the induced transverse magnetic (TM) or transverse electric (TE) grounded dielectric modes. A similar control of the complex surface wave modes, and thus of the extraordinary transmission (ET) peaks, is demonstrated here via anisotropic slabs in the form of a fakir's bed of nails. However, it is shown that those ET peaks formed from TE modes are suppressed because of the inherent dispersion characteristics of the free-standing grounded pins. This allows the red-shifting of the ET for the polarization parallel to the larger in-plane period of the hole array, but unlike the dielectric isotropic slab configuration, the orthogonal polarization remains inhibited.application/pdfeng© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution-NonCommercial- ShareAlike 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.Extraordinary optical transmissionNegative refractionMetamaterialsCircuitsLensesinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccess