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Proceedings Paper

Extreme super-resolution using the spherical geodesic waveguide
Author(s): Juan Carlos Miñano; Juan Carlos González; Pablo Benítez; Dejan Grabovičkić
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Paper Abstract

Leonhardt demonstrated (2009) that the 2D Maxwell Fish Eye lens (MFE) can focus perfectly 2D Helmholtz waves of arbitrary frequency, i.e., it can transport perfectly an outward (monopole) 2D Helmholtz wave field, generated by a point source, towards a "perfect point drain" located at the corresponding image point. Moreover, a prototype with λ/5 super-resolution (SR) property for one microwave frequency has been manufactured and tested (Ma et al, 2010). Although this prototype has been loaded with an impedance different from the "perfect point drain", it has shown super-resolution property. However, neither software simulations nor experimental measurements for a broad band of frequencies have yet been reported. Here we present steady state simulations for two cases, using perfect drain as suggested by Leonhardt and without perfect drain as in the prototype. All the simulations have been done using a device equivalent to the MFE, called the Spherical Geodesic Waveguide (SGW). The results show the super-resolution up to λ/3000, for the system loaded with the perfect drain, and up to λ /500 for a not perfect load. In both cases super-resolution only happens for discrete number of frequencies. Out of these frequencies, the SGW does not show super-resolution in the analysis carried out.

Paper Details

Date Published: 4 May 2012
PDF: 10 pages
Proc. SPIE 8429, Optical Modelling and Design II, 84290G (4 May 2012); doi: 10.1117/12.923867
Show Author Affiliations
Juan Carlos Miñano, Univ. Politécnica de Madrid (Spain)
Juan Carlos González, Univ. Politécnica de Madrid (Spain)
Pablo Benítez, Univ. Politécnica de Madrid (Spain)
Dejan Grabovičkić, Univ. Politécnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 8429:
Optical Modelling and Design II
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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