Stimulated Brillouin scattering in silicon/chalcogenide slot waveguides

Sayyed Reza Mirnaziry, Christian Wolff, M. J. Steel, Benjamin J. Eggleton, Christopher G. Poulton

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


We study slot waveguide geometries, comprising a combination of soft glasses and high-index guiding structures, for enhancing stimulated Brillouin scattering (SBS). We show that strong optical and acoustic mode confinement in these waveguides can lead to a substantial increase in SBS gain, comparable to or greater than recently proposed suspended silicon nanowire structures. We compute the optimal parameters of the structure and examine the physics of optical and acoustic confinement within slot waveguides. Finally, we compute the effects of linear and nonlinear loss mechanisms on optimum pump/Stokes powers and waveguide lengths.

Original languageEnglish
Pages (from-to)4786-4800
Number of pages15
JournalOptics Express
Issue number5
Publication statusPublished - 7 Mar 2016


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