Mo Guo-Qiang, Li Jiu-Sheng
Appl Opt. 2016 Sep 1;55(25):7093-7. doi: 10.1364/AO.55.007093.
Electromagnetic polarization conveys valuable information for signal processing. Manipulation of a terahertz wave polarization state exhibits tremendous potential in developing applications of terahertz science and technology. We propose an approach to efficiently split transverse-electric and transverse-magnetic polarized terahertz waves into different propagation directions over the frequency range from 0.9998 to 1.0007 THz. Both the plane wave expansion method and the finite-difference time-domain method are used to calculate and analyze the transmission characteristics of the proposed device. The present device is very compact and the total size is 1.02 mm×0.99 mm. This polarization beam splitter performance indicates that the structure has a potential application for forthcoming terahertz-wave integrated circuit fields.
电磁极化在信号处理中传递着有价值的信息。太赫兹波偏振态的操控在太赫兹科学技术应用开发方面展现出巨大潜力。我们提出一种方法，可在0.9998至1.0007太赫兹的频率范围内，将横向电场和横向磁场偏振的太赫兹波高效地分离到不同传播方向。采用平面波展开法和时域有限差分法对所提器件的传输特性进行计算与分析。该器件非常紧凑，总尺寸为1.02毫米×0.99毫米。这种偏振分束器的性能表明该结构在未来太赫兹波集成电路领域具有潜在应用价值。
