Conformal mappings to achieve simple material parameters for transformation optics devices

Inverse Transformation Optics with Realistic Material Parameters

We present a method to generate transformation functions based on a space of achievable material properties. To validate this approach, we consider the range of effective refractive index achievable using silver nanowires in a dielectric background. Given fabrication constraints, we generate a reduced cloaking transformation and confirm its performance using FDTD and FEM simulations. We explore...

Broadband Transformation Optics Devices

Recently we have suggested that two-dimensional broadband transformation optics devices based on metamaterial designs may be built using tapered waveguides. Here we review application of this principle to broadband electromagnetic cloaking, trapped rainbow, and novel microscopy devices.

Cloaking Devices, Electromagnetic Wormholes, and Transformation Optics

We describe recent theoretical and experimental progress on making objects invisible to detection by electromagnetic waves. Ideas for devices that would have once seemed fanciful may now be at least approximately implemented physically using a new class of artificially structured materials called metamaterials. Maxwell’s equations have transformation laws that allow for design of electromagneti...

Self-Focusing and the Talbot Effect in Conformal Transformation Optics.

Transformation optics has been used to propose various novel optical devices. With the help of metamaterials, several intriguing designs, such as invisibility cloaks, have been implemented. However, as the basic units should be much smaller than the working wavelengths to achieve the effective material parameters, and the sizes of devices should be much larger than the wavelengths of illuminati...

Transformation Optics Techniques for Designing Gradient Index Devices