Coupling Properties of a Conical Tungsten-Wire Waveguide in the Terahertz Frequency Range

다국어 초록 (Multilingual Abstract)

The coupling properties of a conical tungsten-wire waveguide in the terahertz (THz) frequency range were investigated through theoretical simulations and experiments. As the tip of a conical wire has a smaller diameter than that of a cylindrical wire, it has a greater THz field density than the latter. After the THz pulse had been coupled to the receiver (Rx) by using a 1-μm-diameter conical wire tip, the detected THz pulse increased 5.3 times compared with the pulse when a 500-μm-diameter cylindrical wire tip was used. This result coincides with that of the theoretical simulations, in which a high-frequency structure simulator (HFSS) was used, when likewise conrmed that coupling a conical wire to Rx was about 1,000 times more sensitive than wire-to-wire coupling.

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