Solinide Photonics raises €4M to commercialise microcomb chips for AI data centres

How Solinide’s microcomb approach works

Many wavelength-division optical systems use arrays of separate lasers, with each laser producing an individual wavelength. Solinide’s approach is to integrate the light-source function onto a silicon-nitride photonic chip. Its microcomb technology is designed to use one pump laser and an integrated resonant structure to produce many evenly spaced, controlled wavelengths from the same chip.

Each wavelength can act as a separate channel for data travelling through the same optical fibre. In principle, that allows a single compact source to support multiple data streams without duplicating a separate laser for every channel. The company says its technology can generate dozens of wavelengths in its announced product context and more than 100 channels in its technology specifications.

The intended benefits are lower component count, reduced power use, less cooling demand, lower cost and a smaller physical footprint. These are design goals and company claims rather than independently established results across commercial deployments.

Solinide also reports more than 60% optical conversion efficiency for its “photonic molecular” microcomb architecture, compared with less than 5% for conventional soliton microcombs in its own comparison. Those figures have not been independently benchmarked in the evidence available here.

Why optical interconnects matter for AI infrastructure

AI systems move large volumes of data between processors, accelerators, memory and switches. As clusters grow, the optical connections linking those components can affect bandwidth, energy budgets, cooling requirements and equipment density. Solinide is targeting this data-movement challenge with a light source intended to scale across multiple wavelengths while reducing the hardware required for each link.

The company is also targeting telecommunications and future high-capacity network infrastructure. In those applications, compact multi-wavelength sources could address similar requirements around capacity, energy consumption, equipment space and cost.

Reported milestones and product direction

Solinide says it has demonstrated microcomb performance for data-centre links and developed an integrated rack-mounted system. In December 2025, the company reported a production-form-factor silicon-nitride microcomb system with more than 60% optical conversion efficiency and 28 wavelength channels, integrated into a rack-mounted, field-ready product.

The company also said trial integration was under way with NVIDIA. The available evidence does not independently establish the scope, results or commercial status of that work, so it should be treated as a company-reported trial rather than a confirmed deployment.

Solinide’s stated product direction includes a rack-based comb source and a pluggable optical light-source product for high-speed links.

What the new funding will support

The company says the seed capital will be used to:

• Hire engineering and commercial staff.
• Expand in-house prototyping capabilities.
• Prepare for European manufacturing and scalable production.
• Deepen work with strategic industry partners.
• Advance commercial readiness, product launch and real-world deployment.

The funding marks a transition from demonstrating the technology toward manufacturing preparation and market adoption. Whether Solinide’s reported efficiency, link performance and field-readiness translate into independently validated commercial products remains to be established.