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Optical differentiator based on a trilayer metal-dielectric structure
A.I. Kashapov 1,2, L.L. Doskolovich 1,2, D.A. Bykov 1,2, E.A. Bezus 1,2, D.V. Nesterenko 1,2

1 IPSI RAS – Branch of the FSRC "Crystallography and Photonics" RAS,
443001, Samara, Russia, Molodogvardeyskaya st. 151,
2 Samara National Research University, 443086, Samara, Russia, Moskovskoye Shosse 34

 PDF, 1252 kB

DOI: 10.18287/2412-6179-CO-824

Pages: 356-363.

Full text of article: Russian language.

Abstract:
Optical properties of a resonant trilayer metal-dielectric-metal (MDM) structure that consists of an upper metal layer, a dielectric layer, and a metal substrate are investigated. Using a multiple wave interference model, we prove that the reflection coefficient of the MDM structure may strictly vanish. The existence of a reflectance zero makes it possible to use the MDM structure as an optical differentiator. The numerical simulation results presented demonstrate the possibility of optical computation of the first derivative with respect to either time or spatial variable. The obtained results may find application in novel analog optical computing and optical information processing systems.

Keywords:
resonant structure, metal-dielectric multilayer, optical differentiation.

Citation:
Kashapov AI, Doskolovich LL, Bykov DA, Bezus EA, Nesterenko DV. Optical differentiator based on a trilayer metal-dielectric structure. Computer Optics 2021; 45(3): 356-363. DOI: 10.18287/2412-6179-CO-824.

Acknowledgements:
This work was funded by the Russian Science Foundation (project № 19-19-00514) (investigation of the optical properties of the MDM structure, Sections 1 and 2), Russian Foundation for Basic Research (project 18-07-00613) (investigation of the MDM differentiators), and by the RF Ministry of Science and Higher Education within the State assignment to the FSRC "Crystallography and Photonics" RAS (development of the software for simulating MDM differentiators, Section 3).

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