纳米线端面反射和透射矩阵模型
Model for reflection and transmission matrices of nanowire end facets
摘要：
纳米线在各种光电器件中显示出巨大的潜力，例如发光二极管、太阳能电池和纳米线激光器。本文提出了一种直接计算任意截面波导端面模反射和模透射矩阵的方法，得到了广义的菲涅耳方程。反射可以方便地使用快速傅立叶变换计算。我们证明了反射定性描述的两个主要参数，模式场限制和平均菲涅尔反射的平面波构成的波导模式。
英文摘要：
Nanowires show a large potential for various electrooptical devices, such as light emitting diodes, solar cells and nanowire lasers. We present a direct method developed to calculate the modal reflection and transmission matrix at the end facets of a waveguide of arbitrary cross section, resulting in a generalized version of the Fresnel equations. The reflection can be conveniently computed using Fast Fourier Transforms. We demonstrate that the reflection is qualitatively described by two main parameters, the modal field confinement and the average Fresnel reflection of the plane waves constituting the waveguide mode.
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