Anisotropic Metamaterials Emulated by Tapered Waveguides: Application to Optical Cloaking

TL;DR

This paper presents a method to emulate anisotropic metamaterials using tapered waveguides, enabling broadband, low-loss optical cloaking at visible frequencies on a large scale.

Contribution

It introduces a novel approach to mimic anisotropic metamaterials with tapered waveguides, achieving broadband optical cloaking in the visible spectrum.

Findings

Successful demonstration of broadband electromagnetic cloaking in visible frequencies

Large-scale cloaking approximately 100 times larger than the wavelength

Low-loss and broadband performance of the emulated metamaterials

Abstract

We demonstrate that metamaterial devices requiring anisotropic dielectric permittivity and magnetic permeability may be emulated by specially designed tapered waveguides. This approach leads to low-loss, broadband performance. Based on this technique, we demonstrate broadband electromagnetic cloaking in the visible frequency range on a scale ~100 times larger than the wavelength.