Implementing adjoined optimization in Lumerical

- July 11, 2023 at 9:32 am
  
  Ruzan
  Subscriber
  
  Hi,
  I am thinking of implementing adjoined optimization in Lumerical, and I am trying to identify the best place to start.
  I previously used the SQP method, like in this example https://optics.ansys.com/hc/en-us/articles/360042304834-Grating-coupler-Matlab-driven-optimization-2D-
  The issue with this method was that with 3 parameters to be optimized, I had to run from 40 to 60 FDTD simulations to reach convergence. I believe the adjoined method should reduce the number of required FDTD simulations.
  Would optimizing the LumOpt code be the best place to start? Would you suggest using Matlab or the Python version? I found the following presentation online: https://www2.lumerical.com/resources/OFC_Hackathon_Lumerical.pdf
  Would you recommend some other resources?
  Thanks!
- July 21, 2023 at 11:07 pm
  Taylor Robertson
  Ansys Employee
  Hello Ruzan,
  
  The adjoint method is already implemented in Lumerical. I don't think it will reduce the number of simulations, but it is a more sophisticated approach to doing gradient descent. You will still need a good starting point, some physical inution and experience with FDTD\python. We ship lumopt with the Lumerical install no need to use the github, this landing page is a good place to start.
  - Automation API
  The examples can be found here.
  - Inverse Design Optimization - List of Examples
  Good luck

Viewing 1 reply thread

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

Earth Rescue – An Ansys Online Series

The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.

Ansys Blog

Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.

Trending discussions