Almost 15 years have passed since the initial demonstrations of terahertz (THz) wireless communications were made using both pulsed and continuous waves. THz technologies are attracting great interest and are expected to meet the ever-increasing demand for high-capacity wireless communications. Here, we review the latest trends in THz communications research, focusing on how photonics technologies have played a key role in the development of first-age THz communication systems. We also provide a comparison with other competitive technologies, such as THz transceivers enabled by electronic devices as well as free-space lightwave communications.
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T.N. acknowledges the Ministry of Internal Affairs and Communications (MIC) Japan for funding the Strategic Information and Communications R&D Promotion Programme (SCOPE), and the Japan Science and Technology Agency (JST) for funding the Industry-Academia Collaborative R&D Program. G.D. gratefully acknowledges the French Agence Nationale de la Recherche (ANR) for funding the COM'TONIQ 'Infra' 2013 programme on THz communications, through the grant ANR-13-INFR-0011-01, and the support from several French research programmes and institutes: Lille University, IEMN institute (RF/MEMS Characterization Center, Nanofab and Telecom platforms, IRCICA), the CNRS and by the French RENATECH network. This work was also partly supported by the French 'Programmes d'investissement d'avenir' Equipex FLUX 0017, ExCELSiOR project and the Nord-Pas de Calais Regional council and the FEDER through the CPER 'Photonics for Society'. Some of the work was also supported by a IEMN-Lille University-Tektronix academic-industrial partnership on THz communications. C.R. acknowledges the UK Engineering and Physical Science Research Council for its funding of the programme grant on 'Coherent Terahertz Systems' and the European Commission for its support of the IPHOBAC-NG project and FiWin5G Marie Curie ITN.
The authors declare no competing financial interests.
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Nagatsuma, T., Ducournau, G. & Renaud, C. Advances in terahertz communications accelerated by photonics. Nature Photon 10, 371–379 (2016). https://doi.org/10.1038/nphoton.2016.65
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