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| 太赫兹超表面近场等离子体涡旋偏移器件设计 |
| Design of near-field plasmonic vortex with shifting based on metasurface in terahertz region |
| 投稿时间:2020-04-21 |
| DOI:10.3969/j.issn.1005-5630.2020.05.010 |
| 中文关键词: 超表面 近场 等离子体涡旋 |
| 英文关键词:metasurface near-field plasmonic vortex |
| 基金项目: |
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| 摘要点击次数: 3669 |
| 全文下载次数: 1994 |
| 中文摘要: |
| 为了提升太赫兹(terahertz,THz)通讯容量,设计了一种基于单层超表面的激发近场等离子体涡旋偏移的太赫兹器件。基于几何相位超表面,采用FITD(时域有限积分)软件,对该器件的近场涡旋偏移进行了仿真研究。结果表明,所设计的器件在圆偏振光的入射下,能够实现空间任意位置的偏移。该类功能器件在一定程度上提升了太赫兹通讯容量,可应用于6G技术中。 |
| 英文摘要: |
| In this paper, a THz device based on single-layer metasurface has been designed to generate near-field plasmonic vortex with shifting functionality for increasing THz communication capacity. Based on the geometric metasurface, the shifting of near-field vortex of the device is simulated by FITD (the finite integration time domain). The corresponding results suggest that position shifting of the field distribution in the whole space can be achieved under the illumination of circularly polarized light. To a certain extent, the kind of functional devices can improve the THz communication capacity and can be used in 6G technology. |
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