期刊
OPTICS EXPRESS
卷 26, 期 20, 页码 25617-25629出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.26.025617
关键词
-
类别
资金
- National Natural Science Foundation of China (NSFC) [61805010, 61801017, 61827818, 61620106014, 61671047]
- Australian Research Council (ARC) [DE140100614]
- Fundamental Research Funds for the Central Universities [W17JB00550, W17RC00020]
Terahertz (THz) polarization-maintaining waveguides, which have been considered fundamental elements in polarization-sensitive THz systems, are promising platforms in developing functional THz devices. Here, we propose a THz grating based on a subwavelength rectangular polymer waveguide, which filters two polarization states simultaneously. The proposed gratings are characterized and discussed using numerical simulations. We observe two transmission dips with over a 20.9 dB extinction ratio (ER) and around a 21.1 GHz full-width half-maximum (FWHM), where the reflective frequencies of the two polarization waves and the separation between them can be harnessed with appropriate structure designs. Furthermore, we demonstrate that the grating can operate as a polarization-maintaining narrow bandpass filter (ER>12.3 dB and FWHM<1.7 GHz) by introducing a pi-phase shift. This work has the potential to open a new avenue for steering polarized THz radiation using the waveguide-based filters, which could be integrated in THz polarization-sensitive imaging, sensing, and wireless communication systems. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据