Abstract
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 language | English |
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Journal | Journal of the Optical Society of America B: Optical Physics |
Volume | 28 |
Issue number | 7 |
Pages (from-to) | 1596-1602 |
Number of pages | 7 |
ISSN | 0740-3224 |
DOIs | |
Publication status | Published - 2011 |