Plasmonic infrared bandstop reflective filter

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Article number6508917
Journal / PublicationIEEE Journal on Selected Topics in Quantum Electronics
Issue number3
Publication statusPublished - 2013
Externally publishedYes


Various types of free-space plasmonic bandstop filters are reviewed. The plasmonic multilayer structure shows multiple localized surface plasmon (LSP) resonance modes with extraordinary high angle tolerance. Through modifying the plasmonic multilayer structure to a plasmonic T-shaped array, the multiple LSP modes can be suppressed. The filtering properties present a single resonance dip with a low sideband. Through modifying the plasmonic T-shaped array to be an asymmetric one, dual resonance modes can be easily designed. Finally, a nanoporous Au film is proposed to act as a bandstop filter. The fabrication processes are simple and the resonance dip can be manipulated by altering the annealing temperature. © 1995-2012 IEEE.

Research Area(s)

  • Optical filter, plasmonics, porous Au film

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