Hernandez-Serrano A I, Mittleman Daniel M, Pickwell-MacPherson Emma
Opt Lett. 2020 Mar 1;45(5):1208-1211. doi: 10.1364/OL.45.001208.
In this Letter, we report a broadband frequency/polarization demultiplexer based on parallel-plate waveguides (PPWGs) for terahertz (THz) frequencies. The fabrication and experimental validation of this polarization sensitive demultiplexer is demonstrated for the range from 0.2 to 1 THz. Upgrading the demultiplexer by adding a second demultiplexer stage, a fifty-fifty amplitude splitter is also demonstrated in the same frequency range. The multiplexer is based on a stainless-steel traveling-wave antenna, exhibiting strong mechanical robustness. This unique device exhibits three splitting mechanisms in the same device: amplitude, polarization, and frequency splitting. This is a significant improvement for the next generation of THz passive components for communication purposes.
在本信函中，我们报告了一种基于平行板波导（PPWG）的太赫兹（THz）频段宽带频率/偏振解复用器。该偏振敏感解复用器在0.2至1太赫兹范围内进行了制作和实验验证。通过增加第二个解复用器级来升级该解复用器，还在相同频率范围内展示了一个五五分光器。该复用器基于不锈钢行波天线，具有很强的机械鲁棒性。这种独特的器件在同一器件中展现出三种分光机制：幅度、偏振和频率分光。这对于下一代用于通信目的的太赫兹无源元件而言是一项重大改进。
