Resonant coupling in dielectric loaded plasmonic waveguides

A. Krishnan, C. J. Regan, L. Grave De Peralta, A. A. Bernussi

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Light propagation in dielectric loaded surface plasmon polariton waveguide (DLSPPW) resonant coupling devices operating at visible frequencies was experimentally investigated. The transmission characteristics of these devices were studied by leakage radiation microscopy. We show that a strong coupling between DLSPPWs can be achieved with nanoscale gaps. We demonstrate the operation of compact DLSPPW linear couplers and 3 dB power splitters. The performances of micro-DLSPPW racetrack resonators and signal drop filter are also discussed.

Original languageEnglish
Article number231110
JournalApplied Physics Letters
Issue number23
StatePublished - Dec 6 2010


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