Ayar Labs Secures $500M in Series E, Valued at $3.75B, to Scale Light-Based Chip Technology
March 3 (Reuters) – Ayar Labs, a pioneer in using light to transmit data between chips, announced a significant $500 million Series E funding round on Tuesday, catapulting its valuation to $3.75 billion. The round underscores the intense investor focus on the underlying hardware required to sustain the breakneck pace of artificial intelligence development.
The investment was led by asset management firm Neuberger Berman and attracted new backers such as ARK Invest, the Qatar Investment Authority, and 1789 Capital. Notably, chipmaker Advanced Micro Devices (AMD), an existing investor, also participated in the latest round. This infusion brings Ayar Labs' total capital raised to approximately $870 million.
"This funding is a testament to the critical need for a fundamental shift in how data moves inside AI systems," said a company spokesperson. "As traditional electrical interconnects become a bottleneck, our optical technology is poised to unlock the next generation of computing performance."
The company's core technology, known as co-packaged optics, replaces copper wires with light to connect AI processors to memory and other chips. This approach promises dramatically higher speeds and lower power consumption—a key consideration for tech giants and governments investing hundreds of billions into AI infrastructure. The race for superior AI hardware has fueled robust funding for infrastructure companies like Ayar Labs, even amid broader market fluctuations.
Ayar Labs plans to use the new capital to scale its production and testing capabilities, expand its global footprint—including a recently opened office in Hsinchu, Taiwan—and accelerate the deployment of its solutions to customers. The company operates in a competitive landscape that includes rivals like Celestial AI, as well as established players like Lumentum and Coherent, which recently secured major investments from Nvidia.
Industry Voices:
Dr. Elena Vance, Tech Analyst at Horizon Insights: "This isn't just another funding round. It's a strategic bet on the foundational plumbing for AI. If Ayar's optics can be seamlessly integrated, it could alleviate one of the biggest constraints on model training and inference speed."
Rajesh Kumar, Managing Partner at 1789 Capital (New Investor): "We were impressed by Ayar's tangible progress toward commercialization. Their partnerships with industry leaders validate the technology's potential to move from lab to data center. This is a pivotal moment for the ecosystem."
Michael Thorne, Editor at 'The Circuit' Newsletter: "A $3.75 billion valuation for pre-revenue, pre-mass-production hardware is staggering. It reeks of the same speculative frenzy we saw in other tech bubbles. Investors are pouring money into anything with 'AI' and 'optics' in the description, hoping it's the next Nvidia. Let's see if the physics and economics actually work at scale before declaring a revolution."
Sarah Chen, Engineering Lead at a Hyperscaler (Speaking Anonymously): "The power and latency problems in our largest clusters are real and worsening. We're actively evaluating all solutions in this space. A successful integration here would be a game-changer, but the proof will be in consistent, high-yield manufacturing."
(Reporting by Pragyan Kalita in Bengaluru; Editing by Shailesh Kuber and Nick Zieminski)