TITLE

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

AUTHOR(S)
Pile, D. F. P.; Gramotnev, D. K.
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/18/2005, Vol. 86 Issue 16, p161101
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter, we demonstrate the possibility of an effective nanoscale Fabry–Pérot interferometer in a subwavelength plasmonic waveguide in the form of a triangular groove on a metal surface, guiding channel plasmon-polaritons. 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° groove angle. Possible ways of increasing this factor are discussed.
ACCESSION #
17227517

 

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