1. Chair of Communication Systems, University of Duisburg-Essen, Duisburg, Germany
2. Photonics and Ultrafast Laser Science, Ruhr Universität Bochum, Bochum, Germany
3. Department of Physics and Material Sciences Center, Philipps-Universität Marburg, Marburg, Germany
4. Institute for High-Frequency and Communication Technology, University of Wuppertal, Wuppertal, Germany
5. Terahertz Engineering Laboratory, The University of Adelaide, Adelaide, SA, Australia
6. Institut für Nachrichtentechnik, Technische Universität Braunschweig, Braunschweig, Germany
7. Department of Optoelectronics, University of Duisburg-Essen, Duisburg, Germany
8. Institute of Digital Signal Processing, University of Duisburg–Essen, Duisburg, Germany