Fully Photonic Wireless Link Operating Between 100 and 600 GHz with Up to 90 Gbit/s Line Rate

We present a fully photonic, ultra-broadband mm-wave and THz wireless link, covering a wide carrier frequency range from 100 to 600 GHz. It employs a PIN photodiode as the emitter and a waveguide-integrated photoconductive antenna (PCA) as the receiver. To the best of our knowledge, this represents the first wireless link capable of transmitting across a 500 GHz frequency range with a single transmitter and receiver. Additionally, we achieve a new record gross data rate of 90 Gbit/s for PCA-based wireless links at a carrier frequency of 120 GHz. These accomplishments are made possible by substantial enhancements in conversion gain and intermediate frequency (IF) bandwidth of the heterodyne receiver, as well as meticulous optimization of operating conditions of the photomixers.