Imagine every time you stream a video or save a file to the cloud, data has to bounce between hundreds of servers inside a massive data center — and every hop eats electricity. This project built a special chip that uses light instead of electrical signals to move data between servers, squeezing more than 100 tiny light switches onto a single piece of silicon. The result is data centers that use roughly one-tenth the power of today's technology while handling petabytes of traffic per second. Think of it as replacing a tangle of slow, hot copper wires with a single, cool glass highway.
Data centers are hitting a wall: east-west traffic between servers is exploding due to cloud computing and big data, but conventional electrical switches cannot keep up without consuming enormous amounts of power and adding latency. Multi-layer network topologies make the problem worse — more hops mean more heat, more delay, and higher operating costs. Operators need a switching technology that scales to petabit capacity without multiplying their electricity bill.
The project developed a large-scale silicon photonics switching matrix with more than 100 optical modulators on a single chip, integrated with embedded III-V laser sources and a CMOS logic chip. The consortium produced 10 deliverables including the chip prototype and integration of laser sources directly onto the silicon substrate, eliminating the need for external light sources.
If you are a data center operator dealing with skyrocketing electricity bills and cooling costs — this project developed a silicon photonics switching chip with more than 100 modulators that delivers 25 Gb/s per channel and reduces network power consumption 10-fold compared to conventional electrical switches. That means fewer cooling units, lower energy bills, and denser server layouts.
If you are a cloud provider struggling with latency across your east-west server traffic — this project built a single-stage, non-blocking photonic network that scales to Pb/s capacity over distances up to 2000 m in single-mode fibre. This eliminates multi-layer switching bottlenecks and shaves milliseconds off internal data transfers.
If you are a networking equipment manufacturer looking for the next-generation switching platform — this project integrated embedded III-V laser sources directly on a silicon chip, removing the need for expensive external light sources. With 25 Gb/s per channel and more than 100 modulators per chip, this is a ready-to-license building block for high-radix switch products.
The project objective explicitly targets low-cost data centers by integrating laser sources directly on silicon, eliminating expensive external light sources. Exact per-unit pricing is not published in the available project data, but the cost advantage comes from using standard CMOS fabrication processes rather than custom optical assemblies.
Yes — the design targets Pb/s (petabit per second) scale networks built as a single-stage, non-blocking switching fabric. The single-mode silicon photonics chip supports distances up to 2000 m, which covers the range required in modern large-scale data centers.
The project was coordinated by Fraunhofer (Germany), a major European research institution with established technology transfer and licensing programs. With 5 industry partners and 3 SMEs in the consortium, IP is likely split among partners. Interested companies should contact Fraunhofer's licensing office for terms.
Conventional data center networks use multi-layer electrical switching topologies that consume significant power. L3MATRIX achieves 10-fold lower power consumption by embedding laser sources directly on the silicon chip with more than 100 modulators, enabling a flat single-stage network instead of the usual multi-hop architecture.
L3MATRIX was a Research and Innovation Action (RIA) that ran from December 2015 to May 2019. The project developed prototype-level silicon photonics chips with embedded lasers integrated with CMOS logic. Based on available project data, no commercial deployment has been reported yet.
The chip operates at 25 Gb/s per channel in single-mode fibre, which aligns with prevailing data center interconnect speed tiers. Based on available project data, specific standards certifications are not mentioned, but the single-mode fibre approach follows industry direction.
The consortium included 9 partners across 8 countries with a 56% industry ratio. Fraunhofer (Germany) coordinated, with 5 industry players and 3 SMEs contributing to chip design, photonics integration, and testing. This strong industry presence increases the likelihood of technology reaching the market.
The L3MATRIX consortium brings together 9 partners from 8 countries (AT, CH, DE, EL, ES, IL, NL, UK), coordinated by Fraunhofer — one of Europe's largest applied research organizations with deep expertise in photonics manufacturing. The 56% industry ratio (5 out of 9 partners) and 3 SMEs signal that this was not a purely academic exercise; real companies were involved in chip design and integration. The geographic spread across major European photonics hubs (Germany, Netherlands, Israel) gives the project access to leading fabrication facilities and optical component supply chains. For a business considering this technology, the Fraunhofer connection is particularly valuable — they have a proven track record of licensing lab innovations to industrial partners.
Fraunhofer Gesellschaft (Germany) — contact their photonics or microelectronics division for licensing inquiries
Want an introduction to the L3MATRIX team? SciTransfer can connect you with the right researcher for your data center challenge.
