Topology optimization for nano‐photonics

The topology optimization method is a finite element based design method that optimizes material distributions subject to various objective functions and constraints. The method was originally developed for mechanical engineering problem and is by now widely used in automotive and aerospace applications. The method has within the last 5 years been applied to a number of design problems within nano‐photonics. Examples are photonic crystals and photonic crystal based waveguides and filters. The presentation will give an overview of previous works and discuss recent applications within meta‐material and cloaking design.