Compact Silicon Waveguide Mode Converter Employing Dielectric Metasurface Structure
Compact Silicon Waveguide Mode Converter Employing Dielectric Metasurface Structure
复制标题
采用介电超表面结构的紧凑型硅波导模式转换器
DOI：
10.1002/adom.201801191
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发表时间：
2019-02-19
影响因子：
9
通讯作者：
Su, Yikai
中科院分区：
文献类型：
--
作者：
Wang, Hongwei;Zhang, Yong;Su, Yikai
模转换器是片上模分复用系统中的关键部件。提出了一种紧凑的硅波导模式转换器，并采用倾斜亚波长周期微扰的全介质超颖表面结构进行了演示。所提出的波导模式转换器可以缩放以实现任意波导模式转换。作为例子，两个波导模式转换器的实验表明，在绝缘体上的硅晶片，它可以转换TE 0模式的TE 1模式和TE 2模式的耦合长度分别为5.75和6.736 μ m。转换损失
Mode converters are key components in on-chip mode-division multiplexing systems. A compact silicon waveguide mode converter is proposed and demonstrated using all-dielectric metasurface structure with a tilted subwavelength periodic perturbation. The proposed waveguide mode converter can be scaled to realize arbitrary waveguide mode conversion. As examples, two waveguide mode converters are experimentally demonstrated on a silicon-on-insulator wafer, which can convert the TE0 mode to the TE1 mode and the TE2 mode with coupling lengths of 5.75 and 6.736 mu m, respectively. The conversion losses of