Department of Electrical and Computer Engineering, MS-366, Rice University, 6100 Main Street, Houston,Texas 77005, USA.
Opt Lett. 2010 Feb 15;35(4):553-5. doi: 10.1364/OL.35.000553.
We present an experimental study of several common perturbations of wire waveguides for terahertz pulses. Sommerfeld waves retain significant signal strength and bandwidth even with large gaps in the wire, exhibiting more efficient recoupling at higher frequencies. We also describe a detailed study of bending losses. For a given turn angle, we observe an optimum radius of curvature that minimizes the overall propagation loss. These results emphasize the impact of the distortion of the spatial mode on the radiative bend loss.
我们对太赫兹脉冲的几种常见金属丝波导的微扰进行了实验研究。即使在金属丝存在较大间隙的情况下，索末菲波仍保留了较强的信号强度和较宽的带宽，在更高频率下表现出更有效的再耦合。我们还描述了对弯曲损耗的详细研究。对于给定的转弯角度，我们观察到一个最佳曲率半径，它将总传播损耗降到最低。这些结果强调了空间模式的变形对辐射弯曲损耗的影响。
