Semiconductor startup Xscape Photonics has raised $37 million in new funding, bringing its total Series A investment to $81 million and nearly $95 million in total funding since its launch. The round was led by Addition, with continued backing from existing investors including IAG Capital Partners and NVIDIA.
The latest capital round builds on the company’s earlier $44 million Series A round announced in 2024 and doubles the startup’s valuation. Alongside the funding announcement, Xscape Photonics unveiled FalconX, a new laser device designed to transform how data moves within AI data centres.
Why traditional data centre connections are reaching their limits
Modern AI systems rely on vast clusters of accelerators working together to process enormous amounts of information. However, the connections linking those systems often depend on copper-based interconnects originally designed for far smaller workloads.
These legacy links limit the amount of data that can move between processors and memory, a challenge engineers describe as the “escape bandwidth” problem. As AI clusters expand rapidly, the inability to move data quickly enough becomes a critical bottleneck.
Over the past two years, AI clusters have grown more than tenfold. In such environments, the failure of a single optical component can disrupt entire workloads and increase processing costs. For hyperscale data centre operators, reliability is becoming as important as speed, with networks expected to experience far fewer failures than earlier systems.
FalconX introduces multi-colour laser networking
Founded in 2022, the company was created by Vivek Raghunathan together with four photonics researchers from Columbia University, including Alexander Gaeta, Yoshi Okawachi, Keren Bergman and Michal Lipson. The team set out to address one of the most pressing infrastructure challenges of the age of AI: the growing strain on data centre networks.
The company introduced FalconX, a pluggable laser module capable of emitting up to eight wavelengths or colours of light simultaneously. The system uses the company’s proprietary CombX laser technology, which generates multiple optical wavelengths from a single silicon photonics chip.
The module also delivers more than 1 W of optical power from a single device, enabling it to support high-capacity links within AI clusters. Reliability was a central design goal. FalconX includes built-in redundancy and robust components intended to minimise failures across large networks.
Importantly, the device adheres to existing MSA standards for Scale-Up and Scale-Out fabric links, enabling deployment within current hyperscale infrastructure without major redesign.
ChromX platform aims for 128-colour optical fabrics
FalconX represents just the first step in a broader roadmap centred on ChromX, Xscape Photonics’ programmable multi-wavelength photonics platform for data centre networking.
The company plans to expand the technology beyond eight colours, scaling the architecture to support 16, 32 and eventually more than 128 wavelengths in a single platform. This approach could dramatically increase the amount of information transmitted through optical networks inside large computing clusters.
Progress toward that goal is already underway. In August 2025, the company demonstrated 16-colour CombX prototypes in collaboration with Tower Semiconductor. Earlier, in June 2025, Xscape Photonics introduced the EagleX Laser Evaluation Kit, giving partners and customers a way to test the ChromX platform.
By combining advanced photonics with scalable optical networking, the company aims to deliver faster connections while maintaining energy efficiency. The broader vision is to enable AI systems to grow without overwhelming the power budgets or reliability requirements of modern data centres.
As AI workloads continue to expand, the infrastructure connecting computing clusters is becoming as important as the chips themselves. Xscape Photonics is betting that multi-wavelength photonic networks will play a central role in supporting the next generation of AI computing.
“Rapidly increasing bandwidth, power and cost demands of AI workloads have created a critical hardware bottleneck, forcing developers to use just a fraction of their GPUs’ capacity, thereby limiting the revolutionary potential of AI itself,” said Vivek Raghunathan, Xscape Photonics’ CEO and co-founder. “With the support of our world-class investors, Xscape Photonics is accelerating the development of its multi-color wavelength-division multiplexing (WDM) fabric solutions to escape these hardware limits and fundamentally reimagine how data moves through data center networks. FalconX is the industry’s first Comb laser module in a pluggable form factor capable of generating eight wavelengths of light, powering high-speed data movement to allow the entire data center to function as one giant GPU.”
“We are proud to support Xscape Photonics in its mission to redefine data center fabrics for the age of AI,” said Lee Fixel, Founder of Addition. “We see this as a compelling opportunity to invest in optical laser innovation at a moment when advanced photonics is becoming critical to AI infrastructure. With innovations like FalconX’s eight-wavelength redundant laser and the ChromX roadmap to 128+ colors, Xscape is addressing the bandwidth bottlenecks that constrain AI cluster performance today. The team brings deep engineering expertise and scientific rigour, and we’re excited to partner with them as they transform how data moves at AI scale.”
