基于太赫兹管波导的定向耦合器。

Terahertz pipe-waveguide-based directional couplers.

作者信息

Lu Jen-Tang, Lai Chih-Hsien, Tseng Tzu-Fang, Chen Hua, Tsai Yuan-Fu, Hwang Yuh-Jing, Chang Hung-Chun, Sun Chi-Kuang

机构信息

Department of Electrical Engineering and Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan.

出版信息

Opt Express. 2011 Dec 19;19(27):26883-90. doi: 10.1364/OE.19.026883.

DOI:10.1364/OE.19.026883

PMID:22274271

Abstract

We experimentally demonstrate a terahertz (THz) leaky mode directional coupler for future THz applications. The proposed directional coupler comprises two square pipe waveguides. The coupling efficiency is investigated for different frequencies, polarizations, and core sizes. Rectangular pipe-waveguide-based directional couplers and the issue of insertion loss are also discussed. It is found that the THz directional coupler works most efficiently in the minimal-attenuation wavelength regime.

摘要

我们通过实验展示了一种用于未来太赫兹（THz）应用的太赫兹泄漏模式定向耦合器。所提出的定向耦合器由两个方形管道波导组成。研究了不同频率、偏振和纤芯尺寸下的耦合效率。还讨论了基于矩形管道波导的定向耦合器以及插入损耗问题。发现太赫兹定向耦合器在最小衰减波长范围内工作效率最高。