Harrington James, George Roshan, Pedersen Pal, Mueller Eric
Opt Express. 2004 Oct 18;12(21):5263-8. doi: 10.1364/opex.12.005263.
Terahertz (THz) radiation has important applications in spectroscopy, imaging, and space science. Fiber optics for the THz region have been limited to rigid hollow metallic waveguides or short lengths of solid-core transparent dielectrics such as sapphire and plastic. We have fabricated flexible, hollow polycarbonate waveguides with interior Cu coatings for broadband THz transmission using simple liquid-phase chemistry techniques. The losses for these hollow-core guides were measured using a tunable, cw single-mode far IR laser. The losses for the best guides were found to be less than four dB/m and the single mode of the laser was preserved for the smaller bore waveguides.
太赫兹（THz）辐射在光谱学、成像和空间科学领域有着重要应用。用于太赫兹波段的光纤一直局限于刚性空心金属波导或短长度的实心芯透明电介质，如蓝宝石和塑料。我们利用简单的液相化学技术制造出了内部带有铜涂层的柔性空心聚碳酸酯波导，用于宽带太赫兹传输。这些空心芯波导的损耗通过可调谐连续波单模远红外激光进行测量。结果发现，性能最佳的波导损耗小于4分贝/米，并且对于较小内径的波导，激光的单模特性得以保持。
