AMD, Intel back optical upstart pushing for denser photonics inside AI racks
Salience Labs, a startup developing photonic switching tech for AI infrastructure, raised $125M in Series B funding. Investors include AMD and Intel. The company plans to expand its operations in the Bay Area and aims to increase port counts in its optical switches, targeting higher GPU connectivity in AI data centers.
How this was made

The 30-second read
Why it matters
The funding could accelerate deployment of optical switching, influencing supply chains for AI hardware and potentially boosting related semiconductor stocks.
Market read
First report of a sizable capital raise for a photonics AI startup, indicating sector momentum and potential downstream effects on hardware vendors.
What to watch
Absence of Nvidia backing may limit adoption; competition from established optics firms remains high.
Background
Salience Labs raised $125M Series B, backed by AMD, Intel, and venture firms, to develop dense photonic switches for AI racks.
Market effects
Highlights growing interest in silicon photonics for AI data centers, may benefit optics suppliers.
Shows UK/EU photonics talent attracting US chipmaker investment.
Signals potential shift toward optical interconnects in AI hardware globally.
Counterpoint
Large backers may be testing the market; the startup could face execution risk despite funding.
Key entities
- CompanySalience Labs
Private UK-based photonic switching startup.
- CompanyAMD
Backer of Salience Labs, GPU manufacturer.
- CompanyIntel
Backer of Salience Labs, CPU and GPU manufacturer.



