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Memorias de investigación
Conferences:
Perfect imaging of point sources with positive refraction
Year:2012
Research Areas
  • Engineering
Information
Abstract
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.
International
Si
No consta
Entity
6th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics. Metamaterials 2012
Entity Nationality
Sin nacionalidad
Place
San Petersburgo, Rusia
Participants
  • Autor: Juan Carlos Miñano Dominguez (UPM)
  • Autor: Juan Carlos Gonzalez Lopez (UPM)
  • Autor: Pablo Benitez Gimenez (UPM)
  • Autor: Dejan Grabovickic . (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería Óptica
  • Centro o Instituto I+D+i: Centro de Domótica Integral, CEDINT
  • Departamento: Electrónica Física
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