Journal article
Integrated dual-laser photonic chip for high-purity carrier generation enabling ultrafast terahertz wireless communications
Department of Electrical and Photonics Engineering, Technical University of Denmark1
Universidad Carlos III de Madrid2
KTH Royal Institute of Technology3
RISE Research Institutes of Sweden4
Centre of Excellence for Silicon Photonics for Optical Communications, Centers, Technical University of Denmark5
Zhejiang University City College6
Shanghai Jiao Tong University7
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.
Language: | English |
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Publisher: | Nature Publishing Group UK |
Year: | 2022 |
Pages: | 1388 |
ISSN: | 20411723 |
Types: | Journal article |
DOI: | 10.1038/s41467-022-29049-2 |
ORCIDs: | Jia, Shi , 0000-0001-8819-9197 , 0000-0001-9839-7488 , Kong, Deming , 0000-0003-4906-1704 , 0000-0001-9676-3763 , 0000-0002-3627-8085 , 0000-0001-6665-3977 , Hu, Hao , Oxenløwe, Leif K. and Morioka, Toshio |