Abstract A thin-wall cyclic olefin copolymer (COC) tube terahertz (THz) waveguide was proposed and fabricated for broadband terahertz transmission. A dynamic coating method was developed to prepare highly uniform COC tube waveguide samples with an inner diameter of 2.8 mm and three different wall thicknesses from 33.0 to 58.6 μm. The resonant frequencies and transmission bandwidths were measured by the THz time domain spectroscopy and proven to be adjustable by the wall thickness of the COC tube waveguides. The measured minimum losses of the waveguide sample with the wall thickness of 58.6 μm for the straight and bending transmissions are 0.10 dB/cm and 0.18 dB/cm at 1.05 THz, respectively.

中文翻译：

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用于宽带太赫兹传输的薄壁环烯烃共聚物管波导

摘要 提出并制造了一种用于宽带太赫兹传输的薄壁环烯烃共聚物（COC）管太赫兹（THz）波导。开发了一种动态涂层方法来制备高度均匀的 COC 管波导样品，其内径为 2.8 mm，具有 33.0 至 58.6 μm 的三种不同壁厚。谐振频率和传输带宽由太赫兹时域光谱测量，并证明可以通过 COC 管波导的壁厚进行调节。壁厚为 58.6 μm 的波导样品在 1.05 THz 处测得的直线和弯曲传输的最小损耗分别为 0.10 dB/cm 和 0.18 dB/cm。