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This paper describes a two-dimensional optical transformation method that can be used to tailor the propagation of waves confined to a surface. Virtual and physical geometries are employed, and the equivalence of the wave behaviour on these two different surfaces is illustrated using full wave simulations of a graded-index loaded waveguide. This technique has great promise to design devices that are...
Fractal random Cantor superlattices have been proposed in this paper as wavelength selective and broadband filters. Through the use of genetic algorithm optimization, the authors have demonstrated two examples of broadband filters in the mid-IR with a single, broad stop band from 50 THz to 100 THz. These results prove the concept of broadband fractal random superlattices.
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