Integrated Dual-Laser Photonic Chip for High-Purity Carrier Generation Enabling Ultrafast Terahertz Wireless Communications

Nature Communications 2022
Shi Jia, Mu-Chieh Lo, Lu Zhang, Oskars Ozoliņš, Aleksejs Udalcovs, Deming Kong, Xiaodan Pang, Robinson Gunzman, Xianbin Yu, Shilin XIao, Sergei Popov, Jiajia Chen, Guillermo Carpintero, Toshio Morioka, Hao Hu, Leif K. Oxenlowe

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 mono-lithically 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.

Atslēgas vārdi
dual-laser, photonic, chip
DOI
10.1038/s41467-022-29049-2
Hipersaite
https://www.nature.com/articles/s41467-022-29049-2

Jia, S., Lo, M., Zhang, L., Ozoliņš, O., Udalcovs, A., Kong, D., Pang, X., Gunzman, R., Yu, X., XIao, S., Popov, S., Chen, J., Carpintero, G., Morioka, T., Hu, H., Oxenlowe, L. Integrated Dual-Laser Photonic Chip for High-Purity Carrier Generation Enabling Ultrafast Terahertz Wireless Communications. Nature Communications, 2022, Vol. 13, Article number 1388. ISSN 2041-1723. Available from: doi:10.1038/s41467-022-29049-2

Publikācijas valoda
English (en)