Abstract
We use both FEM (flnite element method) and FDTD (flnite difierence time domain method) to simulate the fleld distribution in Maxwell's flsh eye lens with one or more passive drains around the image point. We use the same Maxwell's flsh eye lens structure as the one used in recent microwave experiment (10): Maxwell's flsh eye lens bounded by PEC (perfect electric conductor) is inserted between two parallel PEC plates (as a waveguide structure). Our simulation results indicate that if one uses an active coaxial cable as the object and set an array of passive drains around the image region, what one obtains is not an image of the object but only multiple spots resembling the array of passive drains. The resolution of Maxwell's flsh eye is flnite even with such passive drains at the image locations. We also found that the subwavelength spot around the passive drain is due to the local fleld enhancement of the metal tip of the drain rather than the flsh eye medium or the ability of the drain in extracting waves.
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