1. Proceedings
  2. I3M
  3. 2021
  4. EMSS
  5. 10.46354/i3m.2021.emss.047

Estimation of optimal positioning of gold contact pads for modulating nanophotonic devices based on lithium niobate on insulator platform

  • a Ilia Elmanov ,
  • b Anna Elmanova,
  • c Vadim Kovalyuk,
  • d Pavel An,
  • e Gregory Goltsman
  • a,b,c,d,e Department of Physics, Moscow Pedagogical State University (MPGU), 119992, Russia (e)(f)National Research University Higher School of Economics, Moscow 101000, Russia
Cite as
Elmanov I., Elmanova A., Kovalyuk V., An P., Goltsman G. (2021). Estimation of optimal positioning of gold contact pads for modulating nanophotonic devices based on lithium niobate on insulator platform. Proceedings of the 33rd European Modeling & Simulation Symposium (EMSS 2021), pp. 340-344. DOI: https://doi.org/10.46354/i3m.2021.emss.047

Abstract

Using a numerical simulation of a cross-section of lithium niobate (LN) waveguide, we have determined the optimal position of gold contact pads near the waveguide to better utilize the electro-optic effect in lithium niobate. Varying such parameters as contact thickness, the distance between them, thickness of additional silicon oxide covering, and thickness of remaining not etched LN layer, we determined the value of optical absorption in such configuration and electric field value near to the sidewall of the waveguide. As a result, we determined an optimal configuration, which corresponds to the maximum electric field with a satisfactory value of optical losses.

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