Inverse design of photonic devices with strict foundry fabrication
constraints
- URL: http://arxiv.org/abs/2201.12965v1
- Date: Mon, 31 Jan 2022 02:27:25 GMT
- Title: Inverse design of photonic devices with strict foundry fabrication
constraints
- Authors: Martin F. Schubert, Alfred K. C. Cheung, Ian A. D. Williamson,
Aleksandra Spyra, David H. Alexander
- Abstract summary: We introduce a new method for inverse design of nanophotonic devices which guarantees that designs satisfy strict length scale constraints.
We demonstrate the performance and reliability of our method by designing several common integrated photonic components.
- Score: 55.41644538483948
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We introduce a new method for inverse design of nanophotonic devices which
guarantees that 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 backpropagation of gradients to a latent
design. We demonstrate the performance and reliability of our method by
designing several common integrated photonic components.
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