A high-speed, real-time optical data connection for industrial applications
What happened
Fraunhofer's Li‑Fi Grathus offers a plug‑and‑play evaluation kit that replaces a wired 1 Gbps Ethernet link with an optical wireless connection promising deterministic latency under 100 ns. It supports common industrial protocols (Profinet, EtherCAT, TSN) and is pitched for EMI‑challenged or frequently reconfigured production areas, but it's currently available as an evaluation kit rather than a field‑proven commercial product
Buyer takeaway
Use this as a candidate technology for short, deterministic links in EMI‑heavy zones; require a pilot before changing acceptance criteria
Cost / money
Pilot and integration costs are likely; potential to reduce cabling and civil works but requires upfront validation spend
Supplier / commercial
Vendors will likely propose pilots and evaluation pricing first; include pilot deliverables and pass‑through mechanics in bid terms
Safety / operations
Optical links lower EMI risk but introduce management of optical path and Class 1 laser safety in maintenance procedures
What to watch
Maturity is evaluation‑kit level and range/line‑of‑sight limits may prevent simple substitution for wired redundancy
Key facts
- Evaluation kit available for testing
- Supports 1 Gbps+ links with deterministic latency under 100 ns
- Range suited to short links (up to ~10 m) and supports industrial protocols
Source excerpts
An additional side channel with 1 Mb/s supports management, diagnostics and safety signals
” Li-Fi Grathus is available as an evaluation kit; a ‘ready-to-use’ set that enables the easy replacement of a wired 1 Gbps Ethernet connection with an optical link via plug-and-play, while also allowing testing of the technology’s basic functions in practice
In addition to performance, ease of use is crucial in practical industrial settings
