Constraining Continuous Topology Optimizations to Discrete Solutions for Photonic Applications.

ABSTRACT: Photonic topology optimization is a technique used to find the permittivity distribution of a device that optimizes an electromagnetic figure-of-merit. Two common versions are used: continuous density-based optimizations that optimize a gray scale permittivity defined over a grid, and discrete level-set optimizations that optimize the shape of the material boundary of a device. In this work we present a method for constraining a continuous optimization such that it is guaranteed to converge to a discrete solution. This is done by inserting a constrained suboptimization with low computational overhead cost at each iteration of an overall gradient-based optimization. The technique adds only one hyperparameter with straightforward behavior to control the aggressiveness of binarization. Comput

SUBMITTER: Ballew C 

PROVIDER: S-EPMC10119985 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature