Demonstration of THz communication based on 0.5THz superconducting SIS receiver

Thanks to its high frequency, THz wave is very suitable for ultra-broadband and high data rate communications. Because transmission of THz signal is seriously affected by atmosphere, especially water vapor, more sensitive THz detection techniques are essential for efficient and long-distance THz communications. Based on 0.5THz superconducting SIS receiver, demonstration of THz communication including FM Gaussian noise and FM square wave signal is introduced in this paper. In the experiment, receiving, spectrum processing and demodulation have been tested towards two types of signals, and the testing results will be given as well.