Nanostructured optical waveguide with a highly confined mode

Title: Nanostructured optical waveguide with a highly confined mode

Teams: Dukhov Research Institute of Automatics (VNIIA), Kotel’nikov Institute of Radioengineering and Electronics of RAS, Institute for Theoretical and Applied Electromagnetics of Russian Academy of Sciences, Moscow Institute of Physics and Technology, Queens College of the City University of New York, The Graduate Center of the City University of New York

Writers: E. D. Chubchev, I. A. Nechepurenko, A. V. Dorofeenko, A. P. Vinogradov, Alexander A. Lisyansky

PubDate: May 2020

Project: Nanostructured optical waveguide with a highly confined mode

Abstract

We propose a transmission line working at telecom wavelengths with cross section as small as λ2/39, which is 1.6 times smaller than that of optimized silicon waveguide. The proposed line can be implemented as a subwavelength fiber with plasmonic cladding. This considerable decrease in the line cross section is achieved by utilizing a plasmonic quasi-antisymmetric mode. The required plasmonic cladding is rather thin, therefore, losses are moderate and could be compensated by using amplifying core materials. Such a transmission line can find applications in densely integrated optical systems.