Good news! I think, I will be waiting for 9G before I upgrade! (just kidding)
"Australian engineers have designed a new silicon chip doubling the amount of data which can be transmitted, propelling forward the development of 6G communications. ...
The next frontier of telecommunications is entering the terahertz (THz) range. These frequencies would see wireless speeds far exceeding current systems.
The new chip, designed by a team led by Australian researchers, has been successfully tested at the sub-terahertz J-band of 220–330 GHz. This shows the device could be used for 6G communications and beyond. ...
The chip is the world’s first ultra-wideband integrated terahertz polarisation (de)multiplexer on an all-silicon base. ..."
From the abstract:
"Polarization-division multiplexing is crucial for increasing channel capacity and spectral efficiency in communications. A key component is the polarization multiplexer, which combines or separates signals with orthogonal polarizations. ... This work presents a substrateless all-silicon polarization multiplexer based on tapered directional couplers and air-silicon effective mediums, integrated monolithically on a compact footprint. The device demonstrates a 37.8% fractional bandwidth, an average insertion loss of
1 dB, and a polarization extinction ratio above 20 dB over 225–330 GHz. This superior performance is enabled by the anisotropy of the effective medium claddings, affecting the two orthogonal guided modes differently. The multiplexer enables simultaneous two-channel terahertz fiber communications with polarization diversity. It supports aggregated data rates up to 155 and 190 Gbit with bit error rates below hard- and soft-decision forward-error-correction limits, respectively. This advancement holds promise for 6G terahertz integrated systems with enhanced channel capacities."
Fig. 1 Schematic of the proposed integrated polarization multiplexer.
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