Integrated dual-laser photonic chip for high-purity carrier generation enabling ultrafast terahertz wireless communications

Photonic generation of Terahertz (THz) carriers displays high potential for THz communications with a large tunable range and high modulation bandwidth. While many photonics-based THz generations have recently been demonstrated with discrete bulky components, their practical applications are signifi...

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Bibliographic Details
Published in:Nature communications 2022-03, Vol.13 (1), p.1388-1388, Article 1388
Main Authors: Jia, Shi, Lo, Mu-Chieh, Zhang, Lu, Ozolins, Oskars, Udalcovs, Aleksejs, Kong, Deming, Pang, Xiaodan, Guzman, Robinson, Yu, Xianbin, Xiao, Shilin, Popov, Sergei, Chen, Jiajia, Carpintero, Guillermo, Morioka, Toshio, Hu, Hao, Oxenløwe, Leif K.
Format: Article
Language:English
Subjects:
639/624/1020
639/624/1075/1079
639/624/1075/187
Antennas
Bandwidths
Energy consumption
Energy efficiency
Frequency locking
Humanities and Social Sciences
Injection
Integrated circuits
Lasers
multidisciplinary
Photodiodes
Photonics
Purity
Science
Science (multidisciplinary)
Semiconductors
Signal processing
Transmitters
Wireless communications
Wireless networks
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Summary:Photonic generation of Terahertz (THz) carriers displays high potential for THz communications with a large tunable range and high modulation bandwidth. While many photonics-based THz generations have recently been demonstrated with discrete bulky components, their practical applications are significantly hindered by the large footprint and high energy consumption. Herein, we present an injection-locked heterodyne source based on generic foundry-fabricated photonic integrated circuits (PIC) attached to a uni-traveling carrier photodiode generating high-purity THz carriers. The generated THz carrier is tunable within the range of 0–1.4 THz, determined by the wavelength spacing between the two monolithically integrated distributed feedback (DFB) lasers. This scheme generates and transmits a 131 Gbits −1 net rate signal over a 10.7-m distance with −24 dBm emitted power at 0.4 THz. This monolithic dual-DFB PIC-based THz generation approach is a significant step towards fully integrated, cost-effective, and energy-efficient THz transmitters. A photonic Terahertz source based on injection-locking an integrated dual-laser chip generates and transmits a 131 Gbps THz signal over 10.7-m distance, showing great potential towards fully integrated and energy-efficient THz transmitters for 6G.
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-022-29049-2