Nanoscale Fabry–Pérot Interferometer using channel plasmon-polaritons in triangular metallic grooves | Zendy

David Pile | Zendy; Dmitri K. Gramotnev | Zendy

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Nanoscale Fabry–Pérot Interferometer using channel plasmon-polaritons in triangular metallic grooves

Author(s) -

David Pile,

Dmitri K. Gramotnev

Publication year - 2005

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1905799

Subject(s) - icon , citation , physics , surface plasmon polariton , computer science , information retrieval , plasmon , optics , world wide web , surface plasmon , programming language

In this letter, we demonstrate the possibility of an effective nano-scale Fabry-Perot interferometer in a sub-wavelength plasmonic waveguide in the form of a triangular groove on a metal surface, guiding channel plasmon-polaritons (CPPs). The resonant cavity is formed by two semitransparent metal membranes (mirrors) placed into the groove. Effective filtering effect of the cavity is demonstrated, resulting in single-mode output from the cavity. Typical quality factor for the cavity of the resonant length is determined to be Q ~ 100 for the silver-vacuum structure with the 30 degree groove angle. Possible ways of increasing this factor are discussed

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