dorsal/arxiv
View SchemaTerahertz Communications Using Effective-Medium-Slot Waveguides
| Authors | Nguyen H. Ngo, Weijie Gao, Guillaume Ducournau, Hadjer Nihel Khelil, Rita Younes, Pascal Szriftgiser, Hidemasa Yamane, Yoshiharu Yamada, Shuichi Murakami, Withawat Withayachumnankul, Masayuki Fujita |
|---|---|
| Categories | |
| ArXiv ID | 2601.08261vv1 |
| URL | https://arxiv.org/abs/2601.08261 |
| License | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
Abstract
All-dielectric effective-medium-clad waveguides have been widely exploited in terahertz communications owing to their extremely low loss, low dispersion, and broad bandwidth. In this work, we propose a substrateless effective-medium-slot waveguide. Additionally, we introduce a taper-free interface that allows terahertz waves to directly couple from a metallic hollow waveguide without requiring dielectric insertion. By engineering slot couplers with an effectivemedium channel for impedance and modal matching, the waveguide achieves a fractional 3-dB bandwidth of 40% with a maximum coupling efficiency of 90% in the WR-2.2 band (330-500 GHz). By employing a broadband uni-traveling-carrier photodiode transmitter and sub-harmonic mixer receivers, we achieve an aggregated data rate of 0.8 Tbit/s with quadrature amplitude modulation schemes across 14 channels from 330-600 GHz. The effective-medium-slot waveguide platform yields robust broadband coupling with enhanced mechanical protection, offering reliable interconnects for ultra-high-speed terahertz integrated systems.
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"abstract": "All-dielectric effective-medium-clad waveguides have been widely exploited in terahertz communications owing to their extremely low loss, low dispersion, and broad bandwidth. In this work, we propose a substrateless effective-medium-slot waveguide. Additionally, we introduce a taper-free interface that allows terahertz waves to directly couple from a metallic hollow waveguide without requiring dielectric insertion. By engineering slot couplers with an effectivemedium channel for impedance and modal matching, the waveguide achieves a fractional 3-dB bandwidth of 40% with a maximum coupling efficiency of 90% in the WR-2.2 band (330-500 GHz). By employing a broadband uni-traveling-carrier photodiode transmitter and sub-harmonic mixer receivers, we achieve an aggregated data rate of 0.8 Tbit/s with quadrature amplitude modulation schemes across 14 channels from 330-600 GHz. The effective-medium-slot waveguide platform yields robust broadband coupling with enhanced mechanical protection, offering reliable interconnects for ultra-high-speed terahertz integrated systems.",
"arxiv_id": "2601.08261",
"authors": [
"Nguyen H. Ngo",
"Weijie Gao",
"Guillaume Ducournau",
"Hadjer Nihel Khelil",
"Rita Younes",
"Pascal Szriftgiser",
"Hidemasa Yamane",
"Yoshiharu Yamada",
"Shuichi Murakami",
"Withawat Withayachumnankul",
"Masayuki Fujita"
],
"categories": [
"physics.optics"
],
"license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
"title": "Terahertz Communications Using Effective-Medium-Slot Waveguides",
"url": "https://arxiv.org/abs/2601.08261",
"version": "v1"
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