| 介质金属膜波导在G波段和4.3THz的传输特性 |
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| 引用本文： | 张学文,谭智勇,陈可旺,李维轩,赵泽巧,俞舒元,朱晓松,曹俊诚,石艺尉. 介质金属膜波导在G波段和4.3THz的传输特性[J]. 红外与毫米波学报, 2019, 38(2): 215-222 |
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| 作者姓名： | 张学文 谭智勇 陈可旺 李维轩 赵泽巧 俞舒元 朱晓松 曹俊诚 石艺尉 |
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| 作者单位： | 复旦大学信息科学与工程学院电磁波信息科学教育部重点实验室,上海,200433;中国科学院上海微系统与信息技术研究所中国科学院太赫兹固态技术重点实验室,上海,200050 |
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| 基金项目： | 本论文由国防科技创新特区项目支持。 |
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| 摘 要： | 制作了具有不同介质膜厚度的大口径柔性介质金属膜波导,测试了金属膜波导和介质金属膜波导在G波段、4. 3 THz和中远红外等频段的传输特性.结果表明,波导的传输损耗在G波段随介质膜厚的增加而增加,孔径2. 6mm的金属膜波导在160 GHz传输损耗为2. 1 d B/m且在G波段波导的传输损耗对弯曲不敏感.在4. 3 THZ频点波导的传输损耗随介质膜厚的增加而减小,镀制介质膜可以大幅减小波导的传输损耗以及弯曲附加损耗,孔径3. 6mm介质膜厚为1. 2μm的介质金属膜波导的传输损耗为2. 84 d B/m.光斑能量则随介质膜厚的增加更加集中于低阶传输模式.
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| 关 键 词： | 光纤光学 介质金属膜波导 G波段 太赫兹 传输损耗 |
| 收稿时间： | 2018-07-27 |
| 修稿时间： | 2019-03-22 |
Transmission characteristics of dielectric-coated metallic waveguides in G band and 4.3THz |
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| ZHANG Xue-Wen,TAN Zhi-Yong,CHEN Ke-Wang,LI Wei-Xuan,ZHAO Ze-Qiao,YU Shu-Yuan,ZHU Xiao-Song,CAO Jun-Cheng and SHI Yi-Wei. Transmission characteristics of dielectric-coated metallic waveguides in G band and 4.3THz[J]. Journal of Infrared and Millimeter Waves, 2019, 38(2): 215-222 |
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| Authors: | ZHANG Xue-Wen TAN Zhi-Yong CHEN Ke-Wang LI Wei-Xuan ZHAO Ze-Qiao YU Shu-Yuan ZHU Xiao-Song CAO Jun-Cheng SHI Yi-Wei |
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| Affiliation: | School of Information Science and Engineering, Key Laboratory of EMW Information MoE,Fudan University,Key Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University,School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University,School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University,School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University,School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University,Key Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences and School of Information Science and Engineering,Key Laboratory of EMW Information MoE,Fudan University |
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| Abstract: | Big-bore and flexible dielectric-coated metallic waveguides were fabricated with various dielectric film thicknesses. Transmission characteristics were measured for the metallic waveguides and dielectric-coated metallic waveguides in G band, 4.3 THz, and mid-infrared regions. Measured results show that waveguide loss in G band increases with the increase of dielectric film thickness. Loss for the 2.6 mm-bore metallic waveguide was 2.1 dB/m at the frequency of 160 GHz and the additional loss caused by bending for the waveguide is small. Waveguide loss at 4.3 THz decreases with the increase of dielectric film thickness. And the additional loss caused by bending for the dielectric-coated metallic waveguide decreases with the increase of dielectric film thickness. Loss for the 3.6 mm-bore dielectric-coated metallic waveguide with 1.2 ?m dielectric film thickness is 2.84 dB/m. Measured beam profiles show that energy is more concentrated in the low-order transmission mode as the film thickness increases. |
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| Keywords: | fiber optics dielectric-coated metallic waveguide G band terahertz transmission loss |
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