Scientists at Loughborough University and an international research team have built a tiny “rainbow on a chip” that can generate multiple precisely spaced frequencies of light at the same time. The microchip-based system could eventually help future 6G networks carry more signals simultaneously by converting the optical frequencies into millimetre waves. The researchers demonstrated a system that produces a series of stable, precisely spaced optical frequencies that can be converted into high-frequency electromagnetic signals known as millimetre waves. Millimetre waves are being studied for future communications because they can provide more bandwidth for transmitting data. Producing these signals with the precision and stability required for advanced systems, however, remains a challenge. How is rainbaw related to 6G networks ?
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