Open AccessTheoretical and experimental study on transmission properties of THz wave in metal-coated hollow waveguide
Author(s) -
Tan Xiao-Ling,
Geng You-Fu,
Zhou Jun,
Jianquan Yao
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.054101
Subject(s) - terahertz radiation , materials science , waveguide , transmission loss , optics , transmission coefficient , transmission (telecommunications) , optoelectronics , dispersion (optics) , attenuation coefficient , metal , physics , telecommunications , computer science , metallurgy
Limited by serious material absorption and dispersion in THz wave band, efficient and long distance delivery of THz signal is one of important problems for constructing a compact THz system. Based on the transmission loss coefficient in metal waveguide obtained by perturbation method, the transmission loss properties of THz wave in metal-coated hollow waveguide varying with different metal materials and waveguide structure parameters are simulated. According to the numerical results, an Ag-coated hollow waveguide with inner diameter of 1.1 mm was designed and fabricated, and the transmission loss of THz wave was 8.6 dB/m at frequency of 2.5 THz as found in experiment, which realizes a short distance transmission with ultralow loss in THz region.