材料科学
波前
平面的
宽带
模式(计算机接口)
波导管
炸薯条
转换器
横模
光学
光电子学
横截面
多路复用
物理
电压
电信
计算机科学
操作系统
激光器
计算机图形学(图像)
结构工程
量子力学
工程类
作者
Lin Deng,Yihao Xu,Renchao Jin,Ziqiang Cai,Yongmin Liu
标识
DOI:10.1002/adom.202200910
摘要
Abstract In this work, mode conversion and wavefront shaping by integrating a metallic metasurface on top of a planar waveguide are proposed and demonstrated. The metasurface consists of C‐shaped nanoantennas. By controlling the orientation of each nanoantenna, mode conversion and focusing effect for the cross‐polarized electric fields inside the waveguide are achieved. The design and simulation results of 16 scenarios of wideband transverse‐magnetic to transverse‐electric mode converters with the mode purity up to 98%, and on‐chip lenses at the wavelength of 1550 nm are reported. It is worth noting that the dimension of the devices along the propagation direction is only 9.6 µm. This work manifests the potential application of mode division multiplexing systems and on‐chip optical interconnections based on metasurfaces.
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