Computational design of nanophotonic structures using an adaptive finite element method

TL;DR

This paper presents an adaptive finite element method for designing nanophotonic structures with arbitrary shapes, optimizing their properties efficiently through localized mesh refinement.

Contribution

It introduces a novel adaptive optimization algorithm with symmetric mesh refinement for constructing nanophotonic structures of arbitrary geometry.

Findings

Efficient construction of 2D nanophotonic structures demonstrated

Adaptive mesh refinement improves optimization accuracy

Method allows for arbitrary geometric design of nanophotonic devices

Abstract

We consider the problem of the construction of the nanophotonic structures of arbitrary geometry with prescribed desired properties. We reformulate this problem as an optimization problem for the Tikhonov functional which is minimized on adaptively locally refined meshes. These meshes are refined only in places where the nanophotonic structure should be designed. Our special symmetric mesh refinement procedure allows the construction of different nanophotonic structures. We illustrate efficiency of our adaptive optimization algorithm on the construction of nanophotonic structure in two dimensions.