Dispersion of strongly confined channel plasmon polariton modes

Vladimir Zenin, Valentyn S. Volkov, Zhanghua Han, Sergey I. Bozhevolnyi, Eloïse Devaux, Thomas W. Ebbesen

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We report on experimental (by use of scanning near-field optical microscopy) and theoretical investigations of strongly confined (∼λ/5) channel plasmon polariton (CPP) modes propagating at telecom wavelengths (1425–1630 nm) along V-grooves cut in a gold film. The main CPP characteristics (mode index, width, and propagation length) are determined directly from the experimental near-field images and compared to theoretical results obtained using an analytic description of CPP modes supported by (infinitely deep) V-grooves and finite-element simulations implemented in COMSOL.
Original languageEnglish
JournalJournal of the Optical Society of America B: Optical Physics
Issue number7
Pages (from-to)1596-1602
Number of pages7
Publication statusPublished - 2011


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