Titre :

On-chip topological beamformer for multi-link terahertz 6G to XG wireless

Auteur(s) :

Wang, Wenhao [Auteur]
Nanyang Technological University [Singapour] [NTU]
Tan, Yi [Auteur]
Nanyang Technological University [Singapour] [NTU]
Tan, Thomas [Auteur]
Division of Physics and Applied Physics [Nanyang Technological University] [SPMS-PAP-02-01]
Kumar, Abhishek [Auteur]
Nanyang Technological University [Singapour] [NTU]
Pitchappa, Prakash [Auteur]
Agency for science, technology and research [Singapore] [A*STAR]
Szriftgiser, Pascal [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Ducournau, Guillaume [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Photonique THz - IEMN [PHOTONIQUE THZ - IEMN]
Singh, Ranjan [Auteur correspondant]
Nanyang Technological University [Singapour] [NTU]

Titre de la revue :

Nature

Pagination :

522 - 527

Éditeur :

Nature Publishing Group

Date de publication :

2024-08-14

ISSN :

0028-0836

Discipline(s) HAL :

Physique [physics]
Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Terahertz (THz) wireless communication holds immense potential to revolutionize future 6G to XG networks with high capacity, low latency and extensive connectivity. Efficient THz beamformers are essential for energy-efficient ...
Lire la suite >Terahertz (THz) wireless communication holds immense potential to revolutionize future 6G to XG networks with high capacity, low latency and extensive connectivity. Efficient THz beamformers are essential for energy-efficient connections, compensating path loss, optimizing resource usage and enhancing spectral efficiency. However, current beamformers face several challenges, including notable loss, limited bandwidth, constrained spatial coverage and poor integration with on-chip THz circuits. Here we present an on-chip broadband THz topological beamformer using valley vortices for waveguiding, splitting and perfect isolation in waveguide phased arrays, featuring 184 densely packed valley-locked waveguides, 54 power splitters and 136 sharp bends. Leveraging neural-network-assisted inverse design, the beamformer achieves complete 360° azimuthal beamforming with gains of up to 20 dBi, radiating THz signals into free space with customizable user-defined beams. Photoexciting the all-silicon beamformer enables reconfigurable control of THz beams. The low-loss and broadband beamformer enables a 72-Gbps chip-to-chip wireless link over 300 mm and eight simultaneous 40-Gbps wireless links. Using four of these links, we demonstrate point-to-4-point real-time HD video streaming. Our work provides a complementary metal-oxide-semiconductor-compatible THz topological photonic integrated circuit for efficient large-scale beamforming, enabling massive single-input multiple-output and multiple-input and multiple-output systems for terabit-per-second 6G to XG wireless communications.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Projet ANR :

Convertisseurs THz agiles & fonctionnalisés - FUNctionalized & agile TERAhertz converters
Devices and SYStems enabling Ultra High Data-rates links in sub-TERAhertz

Collections :

• Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL