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Proceedings Paper

Optical fiber meta-tips
Author(s): Maria Principe; Alberto Micco; Alessio Crescitelli; Giuseppe Castaldi; Marco Consales; Emanuela Esposito; Vera La Ferrara; Vincenzo Galdi; Andrea Cusano
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Paper Abstract

We report on the first example of a “meta-tip” configuration that integrates a metasurface on the tip of an optical fiber. Our proposed design is based on an inverted-Babinet plasmonic metasurface obtained by patterning (via focused ion beam) a thin gold film deposited on the tip of an optical fiber, so as to realize an array of rectangular aperture nanoantennas with spatially modulated sizes. By properly tuning the resonances of the aperture nanoantennas, abrupt variations can be impressed in the field wavefront and polarization. We fabricated and characterized several proof-of-principle prototypes operating an near-infrared wavelengths, and implementing the beam-steering (with various angles) of the cross-polarized component, as well as the excitation of surface waves. Our results pave the way to the integration of the exceptional field-manipulation capabilities enabled by metasurfaces with the versatility and ubiquity of fiber-optics technological platforms.

Paper Details

Date Published: 18 April 2016
PDF: 7 pages
Proc. SPIE 9883, Metamaterials X, 98831E (18 April 2016); doi: 10.1117/12.2227337
Show Author Affiliations
Maria Principe, Univ. degli Studi del Sannio (Italy)
Alberto Micco, Univ. degli Studi del Sannio (Italy)
Alessio Crescitelli, Consiglio Nazionale delle Ricerche (Italy)
Giuseppe Castaldi, Univ. degli Studi del Sannio (Italy)
Marco Consales, Univ. degli Studi del Sannio (Italy)
Emanuela Esposito, Consiglio Nazionale delle Ricerche (Italy)
Vera La Ferrara, ENEA (Italy)
Vincenzo Galdi, Univ. degli Studi del Sannio (Italy)
Andrea Cusano, Univ. degli Studi del Sannio (Italy)

Published in SPIE Proceedings Vol. 9883:
Metamaterials X
Allan D. Boardman; Nigel P. Johnson; Kevin F. MacDonald; Ekmel Özbay, Editor(s)

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