Terahertz polarization beam splitter based on photonic crystal and multimode interference

被引：0
|
作者：
Liu Han [1 ]
Li Jiu-sheng [1 ]
机构：
[1] China Jiliang Univ, Ctr Terahertz Res, Hangzhou 310018, Zhejiang, Peoples R China
来源：
OPTOELECTRONICS LETTERS | 2014年 / 10卷 / 05期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1007/s11801-014-4119
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We design a compact terahertz (THz) polarization beam splitter. Both plane wave expansion method and finite-difference time-domain method are used to calculate and analyze the characteristics of the proposed device. The designed polarization beam splitter can split TE-polarized and TM-polarized THz waves into different propagation directions. The simulation results show that the extinction ratios are larger than 18.36 dB for TE polarization and 13.35 dB for TM polarization in the frequency range from 1.86 THz to 1.91 THz, respectively. The designed polarization beam splitter has the advantages of small size and compact structure with a total size of 4.825 mmx0.400 mm.
引用
收藏
页码：325 / 328
页数：4
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