Researchers have proposed a way to modify terahertz pulses, which allows their use for data transmission in wireless networks.
Telecommunications companies around the world onlyThey are beginning to implement the 5G standard, but scientists are already working on the next addition to the technology. 6G will increase data transfer speeds by 100-1000 times, but this will require switching to the terahertz range. The difficulty is that due to the short length and small number of field oscillations of such waves, they are practically impossible to use forBroad transmission on one physical channel.
To solve this problem, the team fromThe National Research University ITMO proposed increasing the pulse duration so that its internal frequencies appear sequentially. This makes it possible to create the necessary interference between them while maintaining the range. Since linear frequency modulation methods for terahertz waves are currently not well studied, scientists decided to use technologies applied to microwave radiation.
The researchers took a suitable metala high-dispersion waveguide and passed a broadband signal through it so that it propagated in different configurations. As a result, the pulse became longer, ranging from 2 to 7 picoseconds, which is enough to separate the channels.
Earlier, we also reported on the development of photonic nanodetectors, which can increase the speed of the Internet by 100 times.
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