Open AccessTerahertz pipe-waveguide-based directional couplers
Author(s) -
Jen-Tang Lu,
Chih-Hsien Lai,
TaiLin Tseng,
Hua Chen,
YungFong Tsai,
Yuh-Jing Hwang,
Hung-Chun Chang,
ChiKuang Sun
Publication year - 2011
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.026883
Subject(s) - power dividers and directional couplers , terahertz radiation , optics , hybrid coupler , waveguide , attenuation , wavelength , materials science , core (optical fiber) , coupled mode theory , optoelectronics , refractive index , physics
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.