Nanocircuit Loading of Plasmonic Waveguides

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 calculate...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2012-09, Vol.60 (9), p.4381-4390
Main Authors: Polemi, A., Alu, A., Engheta, N.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Impedance
Integrated circuit modeling
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Nanocircuit
Nanoparticles
Optical waveguides
plasmonics
Plasmons
Silver
Transfer functions
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Summary: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 approach may be effectively applied to the design of nanofilters, analogous to familiar concepts at radio-frequencies.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2012.2207065