Transformation optics and metamaterials.

  title={Transformation optics and metamaterials.},
  author={Huanyang Chen and C. T. Chan and Ping Sheng},
  journal={Nature materials},
  volume={9 5},
Underpinned by the advent of metamaterials, transformation optics offers great versatility for controlling electromagnetic waves to create materials with specially designed properties. Here we review the potential of transformation optics to create functionalities in which the optical properties can be designed almost at will. This approach can be used to engineer various optical illusion effects, such as the invisibility cloak. 

Electromagnetic wave propagations in conjugate metamaterials.

This work deduces a special kind of materials called conjugate metamaterials, which can support intriguing electromagnetic wave propagations, such as negative refractions and lasing phenomena, and these materials could also serve as substrates for making a subwavelength-resolution lens.

Transformation Electromagnetics and Optics

An overview of the transformation electromagnetics/optics design technique is presented. Illustrative example designs for invisibility cloaks, beam control devices, lenses as well as applications to

Transforming light and sound with metamaterials

In this invited talk, we present the fabrication and characterization of optical and acoustic metamaterials, incorporating unique topological interactions between waves and matter. We propose

PT metamaterials via complex-coordinate transformation optics.

We extend the transformation-optics paradigm to a complex spatial coordinate domain, in order to deal with electromagnetic metamaterials characterized by balanced loss and gain, giving special

Using transformation optics to design optical devices

  • S. Horsley
  • Physics
    2012 6th European Conference on Antennas and Propagation (EUCAP)
  • 2012
We provide an overview of transformation optics and its applications. It is shown that the permeability and permittivity can be understood as providing an effective geometry for electromagnetic

Creating electromagnetic cavities using transformation optics

We investigate the potential of transformation optics for the design of novel electromagnetic cavities. First, we determine the dispersion relation of bound modes in a device performing an arbitrary

Transformation Optics in Coupled Waveguides

The technique of transformation optics is applied to a system of three coupled waveguides undergoing adiabatic passage of a light beam. We show that it is possible, by applying different

Mitigating optical singularities in coordinate-based metamaterial waveguides

Transformation optics has revolutionized our approach to material design in several scientific disciplines by determining the material properties that implement the desired effects of a coordinate

Flexible metamaterials at visible wavelengths

We report on the fabrication and characterization of plasmonic structures on flexible substrates (Metaflex) and demonstrate the optical properties of a single layer of Metaflex. The layer exhibits a

Transformation optics for plasmonics: from metasurfaces to excitonic strong coupling

We review the latest theoretical advances in the application of the framework of Transformation Optics for the analytical description of deeply sub-wavelength electromagnetic phenomena. First, we



Anisotropic metamaterials emulated by tapered waveguides: application to optical cloaking.

We demonstrate that metamaterial devices requiring anisotropic dielectric permittivity and magnetic permeability may be emulated by specially designed tapered waveguides. This approach leads to

Transformation optics: approaching broadband electromagnetic cloaking

An approach to broadband cloaking of light waves is analysed for a simplified case of a scaling transformation for a general cylindrical coordinate system. The proposed approach requires

Transformation-optical design of sharp waveguide bends and corners

Transformation optics is a recently appreciated approach for designing complex electromagnetic media. Here, we describe the extension of transformation optical techniques to include waveguide

Designing the Fourier space with transformation optics.

It is shown that transformation optics can be applied to extend the functionalities of conventional optical devices and a Fourier lens is designed that can transform the image to its reciprocal space and operate for incident light of subwavelength profile.

Electromagnetic wave manipulation by layered systems using the transformation media concept

We show that the optical properties of an oblique layered system with two kinds of isotropic materials can be described using the concept of transformation media, as long as the thickness of the

Optical design of reflectionless complex media by finite embedded coordinate transformations.

This work applies finite, embedded coordinate transformations to the design of several devices, including a parallel beam shifter and a beam splitter, both of which are reflectionless and exhibit unusual electromagnetic behavior as confirmed by 2D full-wave simulations.

Metamaterials and Negative Refractive Index

Recent advances in metamaterials research are described and the potential that these materials may hold for realizing new and seemingly exotic electromagnetic phenomena is discussed.

Optical cloaking with metamaterials

This work presents the design of a non-magnetic cloak operating at optical frequencies, and the principle and structure of the proposed cylindrical cloak are analysed and the general recipe for the implementation of such a device is provided.

An optical cloak made of dielectrics.

The optical 'carpet' cloak is designed using quasi-conformal mapping to conceal an object that is placed under a curved reflecting surface by imitating the reflection of a flat surface and enables broadband and low-loss invisibility at a wavelength range of 1,400-1,800 nm.

An omnidirectional retroreflector based on the transmutation of dielectric singularities.

An omnidirectional retroreflector is demonstrated, a device for faithfully reflecting images and for creating high visibility from all directions, that would normally require a dielectric singularity, an infinity in the refractive index in a real metamaterial.