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Type: 
Journal
Description: 
We report on the first demonstration of a proof-of-principle optical fiber ‘meta-tip’, which integrates a phase-gradient plasmonic metasurface on the fiber tip. For illustration and validation purposes, we present numerical and experimental results pertaining to various prototypes implementing generalized forms of the Snell’s transmission/reflection laws at near-infrared wavelengths. In particular, we demonstrate several examples of beam steering and coupling with surface waves, in fairly good agreement with theory. Our results constitute a first step toward the integration of unprecedented (metasurface-enabled) light-manipulation capabilities in optical-fiber technology. By further enriching the emergent ‘lab-on-fiber’framework, this may pave the way for the widespread diffusion of optical metasurfaces in real-world applications to communications, signal processing, imaging and sensing.
Publisher: 
Nature Publishing Group
Publication date: 
1 Mar 2017
Authors: 

Maria Principe, Marco Consales, Alberto Micco, Alessio Crescitelli, Giuseppe Castaldi, Emanuela Esposito, Vera La Ferrara, Antonello Cutolo, Vincenzo Galdi, Andrea Cusano

Biblio References: 
Volume: 6 Issue: 3 Pages: e16226-e16226
Origin: 
Light: Science & Applications