CST – Computer Simulation Technology

Nanocircuit Loading of Plasmonic Waveguides
Alessia Polemi, Andrea Alù, Nader Engheta
IEEE Transactions on Antennas and Propagation
Volume: 60, Issue: 9, September 2012
4381 - 4390
Nanocircuit, nanoparticles, plasmonics
We apply the optical nanocircuit concepts to model and design optical nanofilters in realistic plasmonic waveguides of different nature, including strips and groove waveguides. The nanocircuit elements are designed to fit the waveguide geometry, and its equivalent impedance is analytically calculated by substituting the role of the conduction current with displacement current. The effect of plasmonic waveguide walls is rigorously modeled in terms of an extra nanocircuit loading that is included in our model.We show via numerical results that the nanocircuit approachmay be effectively applied to the design of nanofilters, analogous to familiar concepts at radio-frequencies.

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