Inhibition of light tunneling in waveguide arrays

We report the observation of almost perfect light tunneling inhibition at the edge and inside laser-written waveguide arrays due to band collapse. When the refractive index of the guiding channels is harmonically modulated along the propagation direction and out-of-phase in adjacent guides, light is...

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Bibliographic Details
Published inPhysical review letters Vol. 102; no. 15; p. 153901
Main Authors Szameit, A, Kartashov, Y V, Dreisow, F, Heinrich, M, Pertsch, T, Nolte, S, Tünnermann, A, Vysloukh, V A, Lederer, F, Torner, L
Format Journal Article
LanguageEnglish
Published United States 17.04.2009
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Summary:We report the observation of almost perfect light tunneling inhibition at the edge and inside laser-written waveguide arrays due to band collapse. When the refractive index of the guiding channels is harmonically modulated along the propagation direction and out-of-phase in adjacent guides, light is trapped in the excited waveguide over a long distance due to resonances. The phenomenon can be used for tuning the localization threshold power.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.102.153901