期刊
NEW JOURNAL OF PHYSICS
卷 13, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/13/3/033026
关键词
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资金
- US Air Force Office of Scientific Research (AFOSR) [FA9550-08-1-0220]
- US Air Force Research Laboratory (AFRL) [FA8718-09-C-0061]
- EPSRC [EP/E053025/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/E053025/1] Funding Source: researchfish
We derive a dynamic closed-form dispersion relation for the analysis of the entire spectrum of guided wave propagation along coupled parallel linear arrays of plasmonic nanoparticles, operating as optical 'two-line' waveguides. Compared to linear arrays of nanoparticles, our results suggest that these waveguides may support more confined beams with comparable or even longer propagation lengths, operating analogously to transmission-line segments at lower frequencies. Our formulation fully takes into account the entire dynamic interaction among the infinite number of nanoparticles composing the parallel arrays, considering also the realistic presence of losses and the frequency dispersion of the involved plasmonic materials, providing physical insights into the guidance properties that characterize this geometry.
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