LONDON — British scientists have demonstrated a tiny “rainbow-on-a-chip” technology that could help advance future 6G communications and precision timing for quantum technologies.

Researchers at Loughborough University, working with an international team, have developed a grain-of-rice-sized microchip capable of producing a precisely organised spectrum of light.

The breakthrough could have important implications for the next generation of communications technology.

The chip produces multiple precisely spaced light frequencies that can be converted into high-frequency electromagnetic signals known as millimetre waves.

These signals are important for technologies requiring extremely high data capacity and precise timing.

Researchers believe the technology could contribute to future 6G networks, while also supporting applications in quantum technology where highly accurate timing is essential.

The development highlights Britain's role in advanced photonics and communications research.

Unlike conventional systems that may require larger and more complex components, the compact chip-based approach could potentially enable smaller and more integrated technology platforms.

The research demonstrates how advances in photonics could become an important building block for Britain's future digital infrastructure.

Further development and testing will be needed before such technology reaches commercial communications networks.

However, the research provides another indication that the race towards 6G is already driving new approaches to chips, optical systems and high-frequency communications.

For the UK technology sector, the breakthrough could strengthen the country's position in next-generation communications and quantum research.