Details

Autor(en) / Beteiligte

• Schubert, Martin F.
• Cheung, Alfred K. C.
• Williamson, Ian A. D.
• Spyra, Aleksandra
• Alexander, David H.

Titel

Inverse Design of Photonic Devices with Strict Foundry Fabrication Constraints

Ist Teil von

• ACS photonics, 2022-07, Vol.9 (7), p.2327-2336

Ort / Verlag

American Chemical Society

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• We introduce a new method for the inverse design of nanophotonic devices that guarantees that the resulting designs satisfy strict length scale constraints, including minimum width and spacing constraints required by commercial semiconductor foundries. The method adopts several concepts from machine learning to transform the problem of topology optimization with strict length scale constraints to an unconstrained stochastic gradient optimization problem. Specifically, we introduce a conditional generator for feasible designs and adopt a straight-through estimator for the backpropagation of gradients to a latent design. We demonstrate the performance and reliability of our method by designing several common integrated photonic components.