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Abstract: We theoretically and numerically study the design of optical -lumped-nanofiltering devices in the framework of our recently proposed paradigm foroptical nanocircuits. In particular, we present the design of basic filteringelements, such as low-pass, band-pass, stop-band and high-pass -lumped-nanofilters, for use in optical nanocircuits together with more complexdesigns, such as multi-zero or multi-pole nanofilters, to work at THz, infraredand optical frequencies. Following the nanocircuit theory, we show how it ispossible to design such complex frequency responses by simple rules, similar toRF circuit design, and we compare the frequency response of these opticalnanofilters with classic filters in RF circuits. These results may provide atheoretical foundation for fabricating nanofilters in optical lumpednanocircuit devices.



Author: Andrea Alu, Michael Young, Nader Engheta

Source: https://arxiv.org/



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