Designing wave vector manipulation devices using a transformation optics approach

TL;DR

This paper presents a transformation optics method for designing electromagnetic devices that manipulate wave vectors, demonstrated through the creation of flat lenses with specific focusing properties.

Contribution

It introduces a general transformation optics-based approach for wave vector manipulation in electromagnetic device design, applicable to flat lenses.

Findings

Simulated flat lenses successfully focused electromagnetic waves.

The method allows precise control of wave vectors without altering wave paths.

Designs demonstrate effective wave focusing capabilities.

Abstract

A transformation optics approach was used to derive a general method for designing electromagnetic devices able to manipulate the wave vectors in the specific manner required by the functionality of the device. While the wave paths inside the device remain of a secondary importance the wave vectors are gradually changed in the desired way by choosing the appropriate coordinate transformation. The proposed method was applied to design both converging and diverging flat lenses. Computer simulations revealed the focusing ability of a converging flat lens designed using the proposed technique.