Ayar Labs secured $155 million in Series D funding to advance its optical I/O technology for AI infrastructure. The round, led by Advent Global Opportunities and Light Street Capital, included investments from AMD Ventures, Intel Capital, NVIDIA, and other strategic backers. This brings Ayar Labs’ total funding to $370 million and positions the company’s valuation above $1 billion.
The funding will support high-volume manufacturing of Ayar Labs’ in-package optical interconnects, designed to address the data bottlenecks of AI workloads. These interconnects replace traditional copper connections with standards-based optical I/O, offering higher efficiency, lower power consumption, and cost savings for AI training and inference. The investor lineup also includes new participants such as 3M Ventures and Autopilot, alongside returning backers like Applied Ventures, GlobalFoundries, and Lockheed Martin Ventures.
Ayar Labs’ solution aims to address the interconnect bottlenecks in high-performance computing (HPC) and artificial intelligence (AI) systems. Key elements of its solutions include:
- TeraPHY Optical I/O Chiplet: This is a silicon-based photonic chiplet that integrates optical transceivers directly into chip packages. It allows for high bandwidth, low latency, and energy-efficient data communication, with capabilities up to 4 Terabits per second (Tbps) of bandwidth in both directions. The TeraPHY chiplet replaces traditional electrical I/O, significantly reducing power consumption and increasing bandwidth density.
- SuperNova Multi-Wavelength Light Source: This component complements the TeraPHY chiplet by providing the necessary light for optical data transmission. It is compliant with the Continuous-Wave Wavelength Division Multiplexing Multi-Source Agreement (CW-WDM MSA), which standardizes optical sources for advanced integrated optics applications, allowing for the use of multiple wavelengths to increase bandwidth efficiency.
- Integrated Photonics: The technology leverages silicon photonics, where optical components are manufactured using standard silicon CMOS processes.
Mark Wade, CEO and co-founder of Ayar Labs, emphasized the strategic importance of this investment, noting that it aligns with the increasing demands for scalable AI solutions. “The leading GPU providers – AMD and NVIDIA – and semiconductor foundries – GlobalFoundries, Intel Foundry, and TSMC – combined with the backing of Advent and Light Street, underscores the potential of our optical I/O technology to redefine AI infrastructure,” Wade said.
• Funding Details: $155 million Series D, led by Advent Global Opportunities and Light Street Capital.
• Key Investors: AMD Ventures, Intel Capital, NVIDIA, 3M Ventures, Applied Ventures, GlobalFoundries.
• Technology: In-package optical interconnects replacing copper, optimized for AI workloads.
• Total Funding: $370 million; valuation exceeds $1 billion.
• Strategic Use: Scaling manufacturing, reducing AI infrastructure bottlenecks, supporting Tier 1 customer roadmaps.
“The caliber of our investors and their confidence in our optical I/O technology highlights its transformative potential for AI infrastructure,” said Mark Wade, CEO of Ayar Labs.
