3 research outputs found
Sub-wavelength imaging by space dilation
No full textTwo transformation-optics inspired flat lenses are used to build up an optical system capable to transpose an area surrounding the object focal point in a magnified area surrounding the image focal point. The object and image focal points of the system are placed in the free space and respectively a dilated space having a sub-unitary relative permittivity and permeability. The anisotropic and inhomogeneous media constituting the lenses enable the processing of the high spatial frequencies waves without converting them in evanescent waves. Numerical simulations show the capability of the proposed device to perform magnified discernible images of the sub-wavelength details
Reflection and transmission coefficients at plane interfaces between transformation-optics media
No full textThe reflection and transmission phenomena occurring at the plane interface between two transformation-optics media are analyzed. In order to compute the reflection and transmission coefficients the wave vectors and the polarizations of the incident, reflected and transmitted waves are described inside the anisotropic and inhomogeneous media at the interface plane. The reflection and transmission coefficients are derived in terms of the coordinate transformations which are describing the transformation-optics media
