利用变换光学介质薄片对三维光学模式进行高效控制。

Efficient control of a 3D optical mode using a thin sheet of transformation optical medium.

作者信息

Ghasemi R, Tichit P-H, Degiron A, Lupu A, de Lustrac A

机构信息

Université Paris-Sud, Institut d'Electronique Fondamentale, UMR 8622, Orsay, France.

出版信息

Opt Express. 2010 Sep 13;18(19):20305-12. doi: 10.1364/OE.18.020305.

DOI:10.1364/OE.18.020305

PMID:20940922

Abstract

We report on a mode adapter that transitions light between two SOI waveguides having different widths. The device has been designed using a two-dimensional embedded coordinate transformation and consists of a thin sheet of a controlled anisotropic material directly placed on top of the Si slab. We demonstrate that this layer effectively controls the flow of energy propagating in the Si slab by performing three-dimensional full-wave simulations. The proposed geometry can be implemented with planar optical metamaterials for various applications in guided optics.

摘要

我们报道了一种模式适配器，它可在具有不同宽度的两个硅基绝缘体上硅（SOI）波导之间转换光。该器件采用二维嵌入式坐标变换进行设计，由直接放置在硅平板顶部的一层受控各向异性材料薄片组成。我们通过进行三维全波模拟证明，这一层有效地控制了在硅平板中传播的能量流。所提出的几何结构可通过平面光学超材料实现，用于导波光学中的各种应用。