Abstract presented in Sisecam 34th Glass Symposium

Automated Design Framework for Thin Film Optical Coatings Using Material and Geometry Optimization

Zeynep Arslanturk1, Alperen Sezgin2, Osman Sayginer3,4

1 Department of Industrial Engineering, Faculty of Mechanical Engineering, Yildiz Technical University, Barbaros Bulvari, 34349, Besiktas, Istanbul, Turkey, zynparslanturk@gmail.com

2 Sisecam Glass Innovation, Cumhuriyet Mahallesi, Sisecam Yolu Sokak, No:2, Gebze, Kocaeli, Turkey, asezgin@sisecam.com

3 Department of Civil, Environment and Mechanical, Engineering, University of Trento, Via Mesiano 77, 38050 Trento, Italy, osman.sayginer@unitn.it

4 IFN – CNR CSMFO Laboratory, FBK Photonics Unit, Via alla Cascata 56/C Povo, 38123 Trento, Italy


Thin-film optical coatings are commonly used elements in optical, electrical and architectural applications. Their ability to manipulate the spectral behavior of the light is especially beneficial in fields such as monitoring, sensing and communication. A thin film optical coating is a material layer made of dielectric or conductive material with nano to micrometer level thickness. Distribution of thin-film coating layers with different thickness and materials enable us to obtain optical systems with unique properties which cannot be achieved with a single material. In this work, we intended to develop a novel design tool which can replace commercial software available in the market. Thus, we propose an automated design framework enabling novel product developments for thin-film optical coatings. The goal of the framework is to build an autonomous design and optimization engine which can tailor the spectral response of an optical system by choosing coating materials, layer thicknesses and the number of layers. To do that, a Transfer Matrix Method is built based on a simulation model of the optical films. Then, the simulation model was coupled with the Genetic Algorithm which mimics the biological evolution. For a design objective, we aimed to lower transmission spectra response through the ultraviolet region while keeping the transmission response at the desired value for architectural purposes. Fabrication limitations were defined in collaboration with Turkiye Sise ve Cam Fabrikalari A.S. – Sisecam Science and Technology Center and they were incorporated in design process.

This project is being supported by The Scientific And Technological Research Council of Turkey (TUBITAK) 2209-B Industrial Research Funding Program for Undergraduate Students 2019/1