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Ayar Labs has successfully closed a $500 million funding round, led by Neuberger Berman, bringing its valuation to around $3.8 billion. The investment will support the development and scaling of its technology aimed at replacing traditional copper interconnects with optical links in chips.

This transition is intended to mitigate the energy, heat, and latency issues associated with increasing data transfer demands on copper traces. Successful commercialization of optical I/O could transform the design and deployment of high-performance systems, although widespread adoption will require significant investment across the semiconductor industry.