Open AccessStimulated Brillouin scattering in silicon/chalcogenide slot waveguides
Author(s) -
Sayyed Reza Mirnaziry,
Christian Wolff,
M. J. Steel,
Benjamin J. Eggleton,
Christopher G. Poulton
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.004786
Subject(s) - brillouin scattering , optics , waveguide , materials science , chalcogenide , silicon , refractive index , scattering , chalcogenide glass , brillouin zone , whispering gallery wave , light scattering , nonlinear optics , optoelectronics , optical fiber , physics , resonator , laser
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.