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dc.titlePlasmonic coaxial Fabry-Pérot nanocavity color filter
dc.contributor.authorSi, G.Y.
dc.contributor.authorLeong, E.S.P.
dc.contributor.authorDanner, A.J.
dc.contributor.authorTeng, J.H.
dc.identifier.citationSi, G.Y., Leong, E.S.P., Danner, A.J., Teng, J.H. (2010). Plasmonic coaxial Fabry-Pérot nanocavity color filter. Proceedings of SPIE - The International Society for Optical Engineering 7757 : -. ScholarBank@NUS Repository.
dc.description.abstractPlamonic coaxial structures have drawn considerable attetion recently because of their unique properties. They exhibit different mechanisms of extraordinary optical transmission observed from subwavelength holes and they can support localized Fabry-Pérot plasmon modes. In this work, we experimentally demonstrate color filters based on coaxial structures fabricated in optically thick metallic films. Using nanogaps with different apertures from 160 nm down to only 40 nm, we show varying color outputs when the annular aperture arrays are illuminated with a broadband light source. Effective color-filter function is demonstrated in the optical regime. Different color outputs are observed and optical spectra are measured. In such structures, it is the propagating mode playing an important role rather than the evanescent. Resonances depend strongly on ring apertures, enabling devices with tunability of output colors using simple geometry control. © 2010 SPIE.
dc.subjectCoaxial nanocavity arrays
dc.subjectColor filter
dc.subjectSurface plasmons
dc.typeConference Paper
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.sourcetitleProceedings of SPIE - The International Society for Optical Engineering
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