Mirnaziry Sayyed Reza, Wolff Christian, Steel M J, Eggleton Benjamin J, Poulton Christopher G
Opt Express. 2016 Mar 7;24(5):4786-4800. doi: 10.1364/OE.24.004786.
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.
我们研究了用于增强受激布里渊散射（SBS）的槽型波导结构，该结构由软玻璃和高折射率波导结构组合而成。我们表明，这些波导中强大的光学和声模限制可导致SBS增益大幅增加，与最近提出的悬浮硅纳米线结构相当或更大。我们计算了该结构的最佳参数，并研究了槽型波导内光学和声限制的物理机制。最后，我们计算了线性和非线性损耗机制对最佳泵浦/斯托克斯功率和波导长度的影响。
