Channelling surface plasmons

S. I. Bozhevolnyi, V. S. Volkov, E. Devaux, J.-Y. Laluet, T. W. Ebbesen

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Channel plasmon polaritons (CPPs) propagating along the bottom of subwavelength grooves cut into a metal surface were recently shown to exhibit strong confinement combined with low propagation loss, a feature that makes this guiding configuration very promising for the realisation of ultracompact photonic components. Here, the results of our investigations of CPP guiding by V-grooves cut into gold are presented, demonstrating efficient large-angle bending and splitting of radiation as well as waveguide-ring resonators and Bragg grating filters. Additionally, we present a simple model based on the effective-index method that accounts for the main features of CPP guiding, thus, providing a clear physical picture of this phenomenon.
TidsskriftApplied Physics A: Materials Science & Processing
Udgave nummer2
Sider (fra-til)225–231
StatusUdgivet - nov. 2007
Udgivet eksterntJa

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