Title :
Wireless communications on THz carriers takes shape
Author :
Freude, W. ; Koenig, S. ; Lopez-Diaz, D. ; Antes, J. ; Boes, F. ; Henneberger, R. ; Leuther, A. ; Tessmann, A. ; Schmogrow, R. ; Hillerkuss, D. ; Palmer, R. ; Zwick, T. ; Koos, C. ; Ambacher, Oliver ; Leuthold, Juerg ; Kallfass, I.
Author_Institution :
Karlsruhe Inst. of Technol. (KIT), Karlsruhe, Germany
Abstract :
High carrier frequencies in the terahertz range 0.1...30 THz are required for wireless data transmission at line rates at or beyond 100 Gbit/s. Here we demonstrate a system with one to three carriers near 237 GHz for (75...100) Gbit/s single-polarization transmission over distances of (20...40) m. The narrow-band THz carrier is generated by photomixing of highly stable mode-locked laser lines in a uni-travelling-carrier photodiode. The electrical photodiode output is radiated over a lensed horn antenna. Besides a receiving lensed horn antenna, the receiver comprises monolithic integrated circuits with mixers and amplifiers. This synergetic use of THz photonics and electronics (“teratronics”) should be scalable to wireless Tbit/s transmission over 1 km. Such a wireless link could bridge the last mile to a subscriber, or could connect two spatially separated fibre gateways.
Keywords :
MMIC amplifiers; MMIC mixers; horn antennas; lens antennas; microwave photonics; optical communication; photodiodes; radiocommunication; THz electronics; THz photonics; amplifiers; bit rate 75 Gbit/s to 100 Gbit/s; distance 20 m to 40 m; electrical photodiode output; frequency 0.1 THz to 30 THz; high-carrier frequencies; highly-stable mode-locked laser lines; lensed horn antenna; mixers; monolithic integrated circuits; narrow-band THz carrier; photomixing; single-polarization transmission; teratronics; two-spatially separated fibre gateways; unitravelling-carrier photodiode; wireless Tbit/s transmission; wireless communications; wireless data transmission; wireless link; Optical amplifiers; Optical fibers; Optical mixing; Optical transmitters; Receivers; Wireless communication; Terahertz radiation; electro-optical gateway; high-speed wireless transmission; microwave photonics; photomixing; photonic network;
Conference_Titel :
Transparent Optical Networks (ICTON), 2014 16th International Conference on
Conference_Location :
Graz
DOI :
10.1109/ICTON.2014.6876601
