ARRAW

anti-resonant reflecting acoustic waveguides

M. K. Schmidt, M. C. O’Brien, M. J. Steel, C. G. Poulton

Research output: Contribution to journalArticle

Abstract

Development of acoustic and optoacoustic on-chip technologies calls for new solutions to guiding, storing and interfacing acoustic and optical waves in integrated silicon-on-insulator systems. One of the biggest challenges in this field is to suppress the radiative dissipation of the propagating acoustic waves, while co-localizing the optical and acoustic fields in the same region of an integrated waveguide. Here we address this problem by introducing anti-resonant reflecting acoustic waveguides (ARRAWs)—mechanical analogues of the anti-resonant reflecting optical waveguides. We discuss the principles of anti-resonant guidance and establish guidelines for designing efficient ARRAWs. Finally, we demonstrate examples of the simplest silicon/silica ARRAW platforms that can simultaneously serve as near-IR optical waveguides, and support strong backward Brillouin scattering.
Original languageEnglish
Article number053011
Number of pages18
JournalNew Journal of Physics
Volume22
Issue number5
DOIs
Publication statusPublished - 4 May 2020

Bibliographical note

© 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

  • acoustic waveguides
  • Brillouin scattering
  • nonlinear optics

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