Design of broadband polarization converter for terahertz waves  

作　　者：PAN Wu SHEN Da-jun YAN Yan-jun 潘武;沈大俊;闫彦君

机构地区：[1]College of Photoelectronic Engineering, Chongqing University of Posts and Telecommunications

出　　处：《Optoelectronics Letters》2018年第6期434-437,共4页光电子快报（英文版）

基　　金：supported by the New Direction Cultivation Project of Chongqing University of Posts and Telecommunications(No.A2014-116)

摘　　要：A broadband reflective polarization converter is proposed. The unit cell of polarization converter is composed of a single-split resonant ring, a double-split resonant ring, a dielectric substrate and a metallic ground. The simulated results show that the polarization converter can convert x-polarized waves into y-polarized waves and obtain a broadband polarization conversion from 0.501 0 THz to 1.390 0 THz with the polarization conversion ratio(PCR) beyond 80% at normal incidence. Moreover, the surface current distributions are investigated to explain the polarization conversion mechanism. Finally, a good agreement is achieved between simulated and measured results. The polarization converter can be applied in terahertz imaging, communication and stealthy technology.A broadband reflective polarization converter is proposed. The unit cell of polarization converter is composed of a single-split resonant ring, a double-split resonant ring, a dielectric substrate and a metallic ground. The simulated results show that the polarization converter can convert x-polarized waves into y-polarized waves and obtain a broadband polarization conversion from 0.501 0 THz to 1.390 0 THz with the polarization conversion ratio(PCR) beyond 80% at normal incidence. Moreover, the surface current distributions are investigated to explain the polarization conversion mechanism. Finally, a good agreement is achieved between simulated and measured results. The polarization converter can be applied in terahertz imaging, communication and stealthy technology.

关 键 词：POLARIZATION CONVERTER TERAHERTZ WAVES 

分 类 号：TN[电子电信]