Perfect imaging of point sources with positive refraction

Miñano Dominguez, Juan Carlos; Gonzalez Lopez, Juan Carlos; Benitez Gimenez, Pablo y Grabovičkić, Dejan (2012). Perfect imaging of point sources with positive refraction. En: "Metamaterials'2012: 6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Metamaterials 2012", 17/09/2012 - 22/09/2012, San Petersburgo, Rusia.

Descripción

Título: Perfect imaging of point sources with positive refraction
Autor/es:
  • Miñano Dominguez, Juan Carlos
  • Gonzalez Lopez, Juan Carlos
  • Benitez Gimenez, Pablo
  • Grabovičkić, Dejan
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Metamaterials'2012: 6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Metamaterials 2012
Fechas del Evento: 17/09/2012 - 22/09/2012
Lugar del Evento: San Petersburgo, Rusia
Título del Libro: Metamaterials'2012: 6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Metamaterials 2012
Fecha: 2012
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Electrónica Física
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

The capability of a device called the Spherical Geodesic Waveguide (SGW) to produce images with details below the classic Abbe diffraction limit (super-resolution) is analyzed here. The SGW is an optical system equivalent (by means of Transformation Optics) to the Maxwell Fish Eye (MFE) refractive index distribution. Recently, it has been claimed that the necessary condition to get super-resolution in the MFE and the SGW is the use of a Perfect Point Drain (PPD). The PPD is a punctual receptor placed in the focal point that absorbs the incident wave, without reflection or scattering. A microwave circuit comprising three elements, the SGW, the source and the drain (two coaxial lines loaded with specific impedances) is designed and simulated in COMSOL. The super-resolution properties have been analyzed for different position of the source and drain and for two different load impedances: the PPD and the characteristic line impedance. The results show that in both cases super-resolution occurs only for discrete number of frequencies. Out of these frequencies, the SGW does not show SR in the analysis carried out.

Más información

ID de Registro: 20931
Identificador DC: http://oa.upm.es/20931/
Identificador OAI: oai:oa.upm.es:20931
Depositado por: Memoria Investigacion
Depositado el: 14 Oct 2013 16:44
Ultima Modificación: 21 Abr 2016 11:01
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