Integrated optical devices based on broadband epsilon-near-zero meta-atoms

TL;DR

This paper demonstrates the design and simulation of broadband epsilon-near-zero metamaterials at optical frequencies, enabling novel nanophotonic devices like energy tunneling channels and focusing lenses.

Contribution

It introduces a theoretical design strategy for broadband ENZ metamaterials and showcases their application in functional nanophotonic devices.

Findings

Successful numerical verification of broadband ENZ metamaterials.

Creation of an ultranarrow electromagnetic tunneling channel.

Design of an ENZ concave focusing lens.

Abstract

We verify the feasibility of the proposed theoretical strategy for designing the broadband near-zero permittivity (ENZ) metamaterial at optical frequency range with numerical simulations. In addition, the designed broadband ENZ stack are used as meta-atoms to build functional nanophotonic devices with extraordinary properties, including an ultranarrow electromagnetic energy tunneling channel and an ENZ concave focusing lens.