Terahertz digital communication system and method based on polarization coding

摘要

The present invention relates to a terahertz digital communication system and method based on polarization coding. The system controls a two-pulse terahertz source by a digital signal to be transmitted, and a two-pulse terahertz source generates a pulse signal at a time when the signals are 0 and 1, respectively, And the polarizing direction of the polarized light is orthogonal to the polarization direction of the polarized light. The polarized light of the two lines is synthesized into a signal of one line through the polarized beam splitter, And then demodulates signal 0 and signal 1 through a terahertz detector to complete the data transmission. The present invention has the advantage of being directly modulated directly without occupying the bandwidth resources and having a simple implementation, and is a new supplement to the conventional terahertz communication scheme. The communication speed is determined by the speed of the pulsed terahertz source, the power can be relatively large if the pulse instantaneous energy of the pulse terahertz source is high, and the attenuation resistance is stronger than the continuous wave.