Optical fiber meta-tips

• 来源期刊: 光：科学与应用（英文版）
• 关键词: Fiber optics metasurfaces plasmonics wavefront manipulation
• 年，卷（期）: 2017,（1）
• 页码范围: 141-150
• 页数: 10页
• 语种: 英文
• DOI: 10.1038/lsa.2016.226

摘要

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.