Relativity Networks secures $22 million to extend AI data‑center reach past power limits

Funding Milestone

Relativity Networks announced a $22 million SAFE financing round on Tuesday, according to TechCrunch.

The round was led by investors including Rhapsody Venture Partners, Bell Ventures Inc., and Faster Than Glass LLC.

Additional, undisclosed investors also participated in the financing.

The company also revealed a $40 million follow‑on order from an unnamed hyperscaler, marking its first large‑scale procurement of hollow‑core fiber.

No valuation or lead investor was disclosed, and the SAFE structure postpones a priced round, leaving conversion terms private.

Relativity Networks was incorporated in Delaware in 2023, as shown in a recent SEC filing.

The filing indicates the SAFE offering began on January 20 2026 and had raised $1 million toward a $10 million target by February 6.

The $22 million announced now exceeds the early filing target by a significant margin.

Prior financing includes a $4.6 million pre‑seed round and a $6.1 million seed round backed by Prysmian, GOVO Venture Partners and other investors.

Combined with earlier rounds, the company has disclosed roughly $32.7 million in total financing.

Hollow‑Core Fiber Technology

Conventional optical fiber transmits light through solid silica glass, incurring latency as the signal travels through the material.

Relativity Networks’ hollow‑core fiber replaces the solid core with an air‑filled channel, allowing light to travel faster.

CEO Jason Eichenholz told TechCrunch that conventional fiber takes roughly five microseconds to carry a signal one kilometer, compared with about 3.5 microseconds for Relativity Networks’ fiber.

This latency reduction becomes material when thousands of AI accelerators must stay synchronized across separate buildings or campuses.

Co‑founder and CTO Rodrigo Amezcua Correa, a professor at the University of Central Florida, led the academic research that produced the anti‑resonant hollow‑core designs.

Amezcua Correa earned his doctorate at the University of Southampton and later worked at the University of Bath and Powerlase Photonics before joining UCF.

Eichenholz, a laser physicist who previously co‑founded lidar maker Luminar Technologies, brings three decades of experience turning optics research into commercial products.

He holds a physics degree from Rensselaer Polytechnic Institute and graduate degrees in optical science and engineering from UCF’s CREOL optics college.

Before Luminar, Eichenholz founded Open Photonics and held technical leadership roles at Ocean Optics, Halma and Newport/Spectra‑Physics.

The partnership pairs Amezcua Correa’s fiber architecture expertise with Eichenholz’s manufacturing and customer‑relationship skills.

Eichenholz said a February 2025 interview with UCF convinced him that the hollow‑core technology warranted a return to company building.

Implications for AI Data Centers

AI infrastructure is increasingly constrained by power availability, land scarcity, and cooling requirements.

Operators are forced to locate compute resources near electricity and cooling sources, even when those sites are farther from existing data‑center clusters.

The reduced latency of hollow‑core fiber enables tighter synchronization across physically distant compute nodes.

This capability can expand the viable geographic footprint for AI data centers without requiring hyperscalers to develop the fiber technology themselves.

The $40 million hyperscaler order signals that at least one major cloud provider sees commercial value in the technology.

By alleviating the latency penalty of longer fiber runs, Relativity Networks’ solution may allow AI workloads to be spread across a broader map of power‑rich locations.

The company’s progress from a photonics research project to a data‑center procurement stage illustrates a maturing market for low‑latency optical interconnects.

If adopted widely, hollow‑core fiber could reduce the need for dense, power‑intensive campus‑scale facilities.

Stakeholders such as data‑center developers, cloud providers, and AI researchers stand to benefit from the expanded placement flexibility.

Future financing rounds may further accelerate manufacturing capacity and market penetration.

Why This Matters: The $22 million financing and a $40 million hyperscaler order signal that hollow‑core fiber is moving toward broader AI data‑center adoption despite power and land constraints.