Gehlot K, Sharma A
Opt Express. 2016 Mar 7;24(5):4722-4729. doi: 10.1364/OE.24.004722.
The optimization of a slot waveguide for any specific application requires a study of the modal characteristics for a wide range of design parameters. Rigorous numerical methods, such as the finite element method (FEM), are time consuming and require a large amount of memory. In this paper, a simple semi-analytical method is used to analyze silicon slot waveguides and to optimize the performance of the waveguide for maximum power confinement in the slot, minimum effective mode area of the slot and to obtain flat dispersion characteristics. The results obtained by the present method agree well with the rigorous numerical results.
针对任何特定应用对狭缝波导进行优化，需要研究一系列设计参数下的模式特性。诸如有限元法（FEM）等严格的数值方法耗时且需要大量内存。本文采用一种简单的半解析方法来分析硅狭缝波导，并优化波导性能，以实现狭缝中最大功率限制、狭缝最小有效模式面积并获得平坦的色散特性。本方法得到的结果与严格的数值结果吻合良好。
