1. Coherent Wireless Link at 300 GHz with 160 Gbit/s Enabled by a Photonic Transmitter
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Simon Nellen, Sebastian Lauck, Emilien Peytavit, Pascal Szriftgiser, Martin Schell, Guillaume Ducournau, Bjoern Globisch, Fraunhofer Institute for Telecommunications - Heinrich Hertz Institute (Fraunhofer HHI), Fraunhofer (Fraunhofer-Gesellschaft), Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Photonique THz - IEMN (PHOTONIQUE THZ - IEMN), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 (PhLAM), Université de Lille-Centre National de la Recherche Scientifique (CNRS), This work was supported by TERAWAY project that has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under G.A No 871668 and it is an initiative of the Photonics Public Private Partnership. This work was also funded by Bundesministerium für Bildung und Forschung (BMBF) in the project PHONOGRAPH (16KIS0638). The datacom setups used for terahertz links performance investigation were supported by the ANR-DFG TERASONIC grant, CPER Photonics for Society and WAVETECH @ HdF as well as and DYDICO cluster of the I-site ULNE.We also thank the ITN TERAOPTICS (Grant no.) to support this work. The TERAOPTICS project has received funding from the European Union’sHorizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 956857. The terahertz receiver used inthe communication setups was developed within ANR SPATIOTERA project and TERIL-WAVES project funded by Metropole Européenne de Lille (MEL)and I-site ULNE and the overall work is part of the IEMN UHD Flagship. IEMN also thanks the PCMP, CHOP (RF Characterization & Optics) platform, PCMP CHOP, ANR-19-CE24-0012,SPATIOTERA,Multiplexage SPATIal en gamme térahertz pour les cOmmunications sans fil à 1 TERAbit/s(2019), ANR-17-CE24-0044,TERASONIC,Transmissions TERAhertz combinant électronique état SOlide et photoNIQue(2017), European Project: 871668,H2020,H2020-ICT-2019-2,TERAWAY(2019), European Project: 956857,H2020,H2020-MSCA-ITN-2020,TERAOPTICS(2020), and Publica
- Subjects
terahertz communication ,Modulation ,Wireless communication ,optoelectronic emitter ,Atomic and Molecular Physics, and Optics ,[SPI]Engineering Sciences [physics] ,Bandwidth ,300 GHz link ,Frequency modulation ,photonic transmitter ,Antennas ,wireless link ,Stimulated emission ,Power measurement - Abstract
International audience; The increasing demand for high-capacity wireless communication requires data links at millimeter waves and terahertz frequencies, respectively. At those frequencies, electronic and photonic technologies compete to prove powerful transmitters and receivers. In this work, we demonstrate a wireless link at 300 GHz using a fiber-coupled PIN photodiode as the transmitter. Thus, the whole emitter side is based on components and techniques from standard fiber-optical communication, which inherently enable broadband data channels. We investigated two antenna designs with amplitude modulated and coherent data signals. Despite similar characteristics in terms of output power and carrier bandwidth, the quality of the data signals differed significantly. In addition, we found that the bit-error ratio (BER) scales non-monotonically with the optical input power of the photodiode, which is proportional to the terahertz output power. Depending on the modulation format and the symbol rate, we identified the optimal driving conditions of the photodiode. For amplitude modulation at 5 Gbit/s, we achieved error-free transmission with a BER of 7.510-13. QPSK modulation was error-free up to 64 Gbit/s. The highest line rate of 160 Gbit/s was achieved with 32QAM modulation. This corresponds to 133 Gbit/s net data rate after forward-error correction with 20% overhead. The highest spectral efficiency was achieved with 64QAM at 8 GBaud, i.e. 48 Gbit/s line rate. The presented results highlight the high bandwidth of photonic wireless THz links. Furthermore, the carefully analysis helps to improve the quality of future wireless links in the 300 GHz band.
- Published
- 2022
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