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| 太赫兹介质波导与金属波导模式转换的设计 |
| Design of mode conversion between terahertz dielectric waveguide and metal waveguide |
| 投稿时间:2020-04-28 |
| DOI:10.3969/j.issn.1005-5630.2020.05.001 |
| 中文关键词: 太赫兹 介质波导 金属波导 耦合 |
| 英文关键词:terahertz dielectric waveguide metal waveguide coupler |
| 基金项目: |
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| 中文摘要: |
| 为实现太赫兹介质波导与金属波导之间模式的转换,设计了一种低损耗、高耦合效率的锥形波导耦合器。通过有限时域差分法(FDTD)对该结构的传输效率进行了仿真优化。仿真结果表明:锥形波导耦合器在170~220 GHz频段,其基模的传输损耗极低;在190~200 GHz频段,其TM基模的传输损耗接近无。该功能器件可以用于集成太赫兹芯片的耦合。 |
| 英文摘要: |
| To realize the mode conversion between the terahertz(THz) dielectric waveguide and the metal waveguide, we design a low-loss, high coupling efficiency tapered waveguide coupler. We have simulated and optimized the transmission efficiency of this structure by the finite-difference time-domain(FDTD) method, and the transmission loss of the fundamental mode is extremely low when the frequency is 170-220 GHz,and TM fundamental mode near lossless transmission at 190-200 GHz. This functional device can be used for coupling of integrated THz chips. |
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