Title :
20-Gbaud QPSK coherent radio transmission at 325 GHz with high-gain antennas
Author :
Kanno, Atsushi ; Kuri, Toshiaki ; Morohashi, Isao ; Hosako, Iwao ; Kawanishi, Tetsuyas ; Yoshida, Yutaka ; Kitayama, K.
Author_Institution :
Nat. Inst. of Inf. & Commun. Technol., Koganei, Japan
Abstract :
High-speed coherent transmission at 325 GHz is successfully demonstrated with a 20-Gbaud QPSK signal. A frequency-locked terahertz signal can be provided by an optical-modulation-based optical frequency comb signal. A high-gain antenna with a gain of 46 dBi is suitable to extend the transmission distance up to 15 m without requiring a terahertz amplifier.
Keywords :
optical modulation; quadrature phase shift keying; submillimetre wave antennas; QPSK; frequency 325 GHz; frequency-locked terahertz signal; high-speed coherent transmission; optical-modulation-based optical frequency comb signal; radio transmission; terahertz amplifier; with high-gain antennas; Optical amplifiers; Optical fibers; Optical receivers; Optical transmitters; Phase shift keying; Stimulated emission;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956046
