Circular slit-groove plasmonic interferometers: a generalized approach to high-throughput biochemical sensing [Invited] | Zendy

Jing Feng | Zendy; Dongfang Li | Zendy; Domenico Pacifici | Zendy

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Circular slit-groove plasmonic interferometers: a generalized approach to high-throughput biochemical sensing [Invited]

Author(s) -

Jing Feng,

Dongfang Li,

Domenico Pacifici

Publication year - 2015

Publication title -

optical materials express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.925

H-Index - 66

ISSN - 2159-3930

DOI - 10.1364/ome.5.002742

Subject(s) - astronomical interferometer , optics , slit , circular polarization , plasmon , physics , polarization (electrochemistry) , surface plasmon , interferometry , materials science , chemistry , microstrip

A class of plasmonic interferometers consisting of a circular slit flanked by a concentric circular groove is demonstrated. Laying in-between the conventional bullseye and the linear slit-groove interferometers, these circular slit-groove interferometers show a polarization-insensitive optical response (thanks to the rotational symmetry imposed by the circular geometry), and overall higher light transmission (due to the absence of a cutoff condition in the circular subwavelength slit). Light transmission and sensitivity can be further enhanced by the presence of plasmonic resonant modes excited by the circular slit. The proposed circular plasmonic interferometers can be employed to develop improved biochemical sensors.

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