Terahertz antiresonant-reflecting-hollow-waveguide-based directional coupler operating at antiresonant frequencies

被引：11
|
作者：
Lai, Chih-Hsien [2 ]
Sun, Chi-Kuang [1 ,3 ]
Chang, Hung-Chun [1 ,3 ,4 ]
机构：
[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan
[2] Hwa Hsia Inst Technol, Dept Elect Engn, Taipei 23568, Taiwan
[3] Natl Taiwan Univ, Grad Inst Photon & Optoelect, Taipei 10617, Taiwan
[4] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10617, Taiwan
来源：
OPTICS LETTERS | 2011年 / 36卷 / 18期
关键词：
FIBER;
D O I：
10.1364/OL.36.003590
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report a particular coupling phenomenon occurring in the directional coupler composed of two touching terahertz antiresonant reflecting hollow waveguides. Unlike conventional directional couplers where one even system mode and one odd system mode are excited, numerical results indicate that three (one even and two odd) system modes participate in the power transfer process at the antiresonant frequencies. As a result, the coupling length can be significantly reduced, and it is shown here to be less than 300 wavelengths. (C) 2011 Optical Society of America
引用
收藏
页码：3590 / 3592
页数：3
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