A hollow core antiresonant photonic crystal fiber (HC-ARPCF) is analyzed for terahertz applications. A numerical analysis of the proposed fiber is first carried out to minimize coupling between the core and cladding modes. The modeling of the scaled-up and inhibited coupling fiber is carried out by means of a Finite Element Method (FEM), which is then demonstrated using a Zeonex filament fiber, fabricated by fused deposition modeling (FDM) of 3D printing technology. The simulation is carried out to analyze both the transmission and possibility of refractometric sensing, whereas, the experimental analysis is carried out using terahertz time domain spectroscopy (THz-TDS), and supports our numerical findings, illustrating how the proposed fibers can be used for low loss transmission of terahertz waves. The simplicity of the proposed fiber structures facilitates fabrication for a number of different transmission and sensing applications in the terahertz range.

中文翻译：

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空心抑制耦合反谐振太赫兹光纤：数值和实验研究

分析了空芯反谐振光子晶体光纤 (HC-ARPCF) 的太赫兹应用。首先对所提出的光纤进行数值分析，以最大限度地减少纤芯和包层模式之间的耦合。放大和抑制耦合光纤的建模是通过有限元方法 (FEM) 进行的，然后使用通过 3D 打印技术的熔融沉积建模 (FDM) 制造的 Zeonex 长丝光纤进行演示。进行模拟是为了分析折射传感的传输和可能性，而实验分析是使用太赫兹时域光谱 (THz-TDS) 进行的，并支持我们的数值发现，说明了所提出的光纤如何用于太赫兹波的低损耗传输。