AI Data Center Optics Funding
Ayar Labs raises $150 million to advance optical interconnects for expanding AI data centers.
Anonymous
Key Points
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Ayar Labs’ TeraPHY optical engine delivers 8 terabits per second per chiplet and is designed to sit alongside accelerator and switch silicon, while its separate SuperNova module supplies the laser light.
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The company’s additional funding extends the $500 million Series E announced in March; Ayar Labs had already raised $870 million through March, before the latest financing.
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The $225 million secondary transaction was led by Antero Peak Group at Artisan Partners, giving early employees and investors liquidity rather than providing new primary capital to Ayar Labs.
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Ayar Labs CEO Mark Wade said, “Copper interconnect is becoming the limiting factor for AI scale-up,” adding that the funding will expand the company’s work across the foundry and packaging ecosystem and support customer programs worldwide.
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The optical interconnects are being developed with a target of becoming products customers can ship at scale around 2028–2029, according to Finimize’s account of the announcement.
Ayar Labs has raised an additional $150 million to scale manufacturing of optical interconnects for AI data centers, bringing its 2026 primary funding to $650 million The AI Insider. The company's photonic technology moves data between processors using fiber and light instead of copper, solving power and heat problems as AI systems expand across multiple racks.
The funding includes a strategic investment from Wiwynn, joining existing backers like Nvidia, AMD, Intel, and MediaTek Silicon Angle. Ayar Labs also disclosed a separate $225 million secondary transaction that gave early employees and investors liquidity at a valuation above $5 billion, though this did not provide new capital to the company.
Optical Interconnects Outperform Copper at Scale
Copper interconnects are becoming outdated as AI systems grow larger, according to CEO Mark Wade The AI Insider. "Copper interconnect is becoming the limiting factor for AI scale-up," he said. Ayar Labs' TeraPHY optical engine delivers 8 terabits per second per chiplet and sits alongside accelerator chips, while a separate SuperNova module supplies the laser light needed to transmit data.
The technology addresses critical constraints in modern data centers Lightwave Online. As AI clusters expand, copper wires generate excessive heat and consume too much power. Optical interconnects using photonic chips solve these problems by moving data faster and more efficiently across large server farms.
Road to Commercial Products by 2028
Ayar Labs plans to ship its optical interconnects at scale around 2028 to 2029 Pulse 2. The company will use the new funding to advance product development, validate performance with customers, and establish manufacturing partnerships. A new design center in Bengaluru, India will support this work.
This timeline comes after the company had already raised $870 million through March 2026 DigiTimes. The latest $150 million funding extends a $500 million Series E round announced in March. Ayar Labs is building relationships across the foundry and packaging ecosystem to ensure products meet customer demands worldwide.
Secondary Funding Rewards Early Backers
Beyond primary capital, Ayar Labs completed a $225 million secondary transaction led by Antero Peak Group at Artisan Partners Silicon Angle. This deal gave early employees and investors a chance to sell their shares at the company's private valuation, which now exceeds $5 billion. Secondary transactions do not provide new capital to the company itself.
The deal reflects strong investor confidence in the co-packaged optics market The AI Insider. Major semiconductor companies including Nvidia, AMD, Intel, MediaTek, and Alchip have all backed Ayar Labs. The addition of Wiwynn as a strategic investor signals support from the hyperscale server and networking community.
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