Researchers from the National Research University MIET, Moscow State University of Electrical Engineering, Moscow State Pedagogical University, MISIS and the Technology Center Research and Production Complex have created non-volatile attenuators to control the parameters of signals in the subterahertz range. Such devices reduce the signal amplitude and can be used for calculations in the THz and sub-THz ranges without conversion to an optical signal, simplifying designs and reducing equipment cost.
The base material for the development was a phase-change alloy of germanium, antimony, and tellurium (GST). It provides extremely precise signal control, allowing signal absorption to vary depending on the state of the crystal.
Elements of photonic circuits can be used to calculate the dot product of vectors in neural networks, opening the possibility of creating energy-efficient artificial intelligence systems directly at the signal level.
The use of such technologies in 6G networks will increase data transfer speeds, reduce errors and enable real-time redistribution of device resources. Currently, scientists continue to adapt the technology for industrial production.
Source: Ferra
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