Broadband plasmonic switching based on asymmetric metallic nanostructures on a VO2 coated metallic film

K. Dalal; Y. Sharma

doi:10.1117/12.2665503

31 May 2023 Broadband plasmonic switching based on asymmetric metallic nanostructures on a VO₂ coated metallic film

K. Dalal, Y. Sharma

Proceedings Volume 12575, Integrated Optics: Design, Devices, Systems and Applications VII; 125750K (2023) https://doi.org/10.1117/12.2665503
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic

Conference Poster

Abstract

Active plasmonic switches with broadband operating range are proposed based on arrays of gold nanodisc-dimers (NDD) with asymmetry in terms of sequentially increasing diameters, in combination with vanadium dioxide (VO₂) as a phase change material. On exposing light, voltage, or heat the layer of VO₂ changes its state from semiconductor to metal. This transition causes considerable changes in the optical characteristics which subsequently alters the reflectance spectra of the designed NDD based plasmonic switches. Thus, efficient broadband switching with high extinction ratios is obtained over a vast wavelength ranges in the near-infrared spectrum. These switches can be employed as the elementary devices in optical networks or can also be used as switching components in integrated photonic circuits.

Citation Download Citation

K. Dalal and Y. Sharma "Broadband plasmonic switching based on asymmetric metallic nanostructures on a VO₂ coated metallic film", Proc. SPIE 12575, Integrated Optics: Design, Devices, Systems and Applications VII, 125750K (31 May 2023); https://doi.org/10.1117/12.2665503

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