Inverse Design of Distributed Bragg Reflectors Using Deep Learning

Distributed Bragg Reflectors are optical structures capable of manipulating light behaviour, which are formed by stacking layers of thin-film materials. The inverse design of such structures is desirable, but not straightforward using conventional numerical methods. This study explores the applicati...

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Main Authors: Sarah Head, Mehdi Keshavarz Hedayati
Format: Article
Language:English
Published: MDPI AG 2022-05-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/12/10/4877
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author Sarah Head
Mehdi Keshavarz Hedayati
author_facet Sarah Head
Mehdi Keshavarz Hedayati
author_sort Sarah Head
collection DOAJ
description Distributed Bragg Reflectors are optical structures capable of manipulating light behaviour, which are formed by stacking layers of thin-film materials. The inverse design of such structures is desirable, but not straightforward using conventional numerical methods. This study explores the application of Deep Learning to the design of a six-layer system, through the implementation of a Tandem Neural Network. The challenge is split into three sections: the generation of training data using the Transfer Matrix method, the design of a Simulation Neural Network (SNN) which maps structural geometry to spectral output, and finally an Inverse Design Neural Network (IDNN) which predicts the geometry required to produce target spectra. The latter enables the designer to develop custom multilayer systems with desired reflection properties. The SNN achieved an average accuracy of 97% across the dataset, with the IDNN achieving 94%. By using this inverse design method, custom-made reflectors can be manufactured in milliseconds, significantly reducing the cost of generating photonic devices and thin-film optics.
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spelling doaj.art-2edf34c8c20d4541ae876c9b19d5fdf12023-11-23T09:54:29ZengMDPI AGApplied Sciences2076-34172022-05-011210487710.3390/app12104877Inverse Design of Distributed Bragg Reflectors Using Deep LearningSarah Head0Mehdi Keshavarz Hedayati1Department of Engineering, Durham University, Durham DH1 3LE, UKDepartment of Engineering, Durham University, Durham DH1 3LE, UKDistributed Bragg Reflectors are optical structures capable of manipulating light behaviour, which are formed by stacking layers of thin-film materials. The inverse design of such structures is desirable, but not straightforward using conventional numerical methods. This study explores the application of Deep Learning to the design of a six-layer system, through the implementation of a Tandem Neural Network. The challenge is split into three sections: the generation of training data using the Transfer Matrix method, the design of a Simulation Neural Network (SNN) which maps structural geometry to spectral output, and finally an Inverse Design Neural Network (IDNN) which predicts the geometry required to produce target spectra. The latter enables the designer to develop custom multilayer systems with desired reflection properties. The SNN achieved an average accuracy of 97% across the dataset, with the IDNN achieving 94%. By using this inverse design method, custom-made reflectors can be manufactured in milliseconds, significantly reducing the cost of generating photonic devices and thin-film optics.https://www.mdpi.com/2076-3417/12/10/4877Machine Learninginverse designtandem networkchromaticityDistributed Bragg Reflector
spellingShingle Sarah Head
Mehdi Keshavarz Hedayati
Inverse Design of Distributed Bragg Reflectors Using Deep Learning
Applied Sciences
Machine Learning
inverse design
tandem network
chromaticity
Distributed Bragg Reflector
title Inverse Design of Distributed Bragg Reflectors Using Deep Learning
title_full Inverse Design of Distributed Bragg Reflectors Using Deep Learning
title_fullStr Inverse Design of Distributed Bragg Reflectors Using Deep Learning
title_full_unstemmed Inverse Design of Distributed Bragg Reflectors Using Deep Learning
title_short Inverse Design of Distributed Bragg Reflectors Using Deep Learning
title_sort inverse design of distributed bragg reflectors using deep learning
topic Machine Learning
inverse design
tandem network
chromaticity
Distributed Bragg Reflector
url https://www.mdpi.com/2076-3417/12/10/4877
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