Abstract
The state-of-art broadband THz sources can contribute to the development of short-range 6G communications. This paper has demonstrated the feasibility of forming the controllable sequence of THz subpulses in the temporal domain and the corresponding quasidiscrete spectrum by the interference of two THz pulses with an exponential chirp. Moreover, due to small time delay between these pulses the temporal and spectral structures are similar to each other (so-called “linkage relation”). This will benefit information encoding in the THz range. The calculated metrics for the prototype communication channel based on the proposed method are competitive with existing short-range THz CW channels.
Highlights
The state-of-art broadband THz sources can contribute to the development of short-range 6G communications
Optical frequency combs are used in IR optical communication systems providing high data rates for long distances[10]
In the THz range a typical method to generate THz spectral comb is THz generator pumped by a pulse train of fs laser pulses[13]
Summary
The state-of-art broadband THz sources can contribute to the development of short-range 6G communications. THz links have been suggested to use pulsed sources for short distance indoor communications[19,20], and to use continuous radiation sources for long distances[21,22] The implementation of these techniques relies on ultra-fast modulation as well as encoding and decoding methods of THz wave, in which pulsed broadband THz technologies can make contributions[23]. The communication channel based on this method is comparable with existing short-range THz CW channels[30,31,32,33] These results can be improved by implementing pump laser with higher repetition rate and adjusting the interferometer. This technique allows to create short-range communication network and devices which can operate at room temperature
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