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Model of a multilayer coating for an artificial optical synapse
E.M. Pritotskii 1, A.P. Pritotskaya 1, M.A. Pankov 1

1 Institute on Laser and Information Technologies of Russian Academy of Sciences –
Branch of the FSRC «Crystallography and Photonics» RAS,
140700, Russia, Shatura, Svyatoozerskaya, 1

 PDF, 1822 kB

DOI: 10.18287/2412-6179-CO-1002

Pages: 214-218.

Full text of article: Russian language.

Abstract:
Optical characteristics of germanium telluride (GeTe) thin films in multilayer structures are calculated. A model of a multilayer optical coating with a four-level transmission coefficient is developed. Based on the calculated data, thickness values are determined at which the transmittance change is greatest for 1550-nm modulated optical radiation. Experimental samples coated with antireflection GeTe films are synthesized and their optical transmission characteristics are investigated. Combinations of parameters of the multilayer structures for the implementation of contrast transmittance levels are determined. The results of the study represent the implementation of a multilevel artificial optical synapse for neuromorphic processors.

Keywords:
multilayer coating, phase-change material, optical synapse, neuromorphic processor.

Citation:
Pritotskii EM, Pritotskaya AP, Pankov MA. Model of a multilayer coating for an artificial optical synapse. Computer Optics 2022; 46(2): 214-218. DOI: 10.18287/2412-6179-CO-1002.

Acknowledgements:
This work was supported by the Russian Foundation for Basic Research under RFBR grant No.19-29-12024/19 (Synthesis of thin films with phase change materials), the Ministry of Science and Higher Education of the Russian Federation under grant No. 075-15-2019-1950 (Analysis of main properties of basic elements for neuromorphic optical systems), and a government project of the FSRC "Crystallography and Photonics" RAS (Study of optical properties of the multilayer structures).

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