Li-Fi Grathus®

High Performance, Real-Time Data Link

Our Li-Fi Grathus®  enables wireless data transmission using light over short distances with data rates of 1 Gbps and higher. With a range of over 5 meters and ultra-low, deterministic latency well below 100 ns, it is ideal for time-critical industrial applications. The system supports bi-directional, full-duplex communication without interference and is compatible with industrial Ethernet standards such as Profinet, EtherCAT, EtherCat-G and SERCOS III. Thanks to its plug-and-play capability and compact design (85 × 45 × 65 mm), it is easy to integrate. Interfaces include Ethernet, Gigabit Ethernet, USB 3.0/3.1, and customizable options, while an additional side channel at 1 Mbps and Laser Safety Class 1 compliance ensure safe and flexible operation..

Features

  • Data rate: 1 Gbps and more
  • Range: 5 m and more
  • Bi-directional, full-duplex
  • No interference issues
  • Ultra-low, deterministic latency (<<100ns)
  • Compatible to industrial Ethernet like Profinet, EtherCAT, EtherCAT-G
    SERCOS III, …
  • Plug and Play capable and easy to adjust
  • Interface: Ethernet, Gigabit-Ethernet, USB3.0/3.1 and customized interfaces
  • Laser Safety Class 1 (eye safe)
  • Additional side channel: 1 Mbps
  • Physical size (L x W x H): 85x45x65 mm
© Fraunhofer IPMS
Li-Fi Grathus®

Grathus®  is the basis of the Pharlan data light barrier. Learn more here.

Multipath Lens (MPL)

High performance optical transmission with improved eye safety

© Fraunhofer IPMS
Multipath lens (MPL) from Fraunhofer IPMS
Improved eye safety with MPL

Multipath lenses allow to increase laser power while maintain eye safety.  In optical communications, MPLs can be used to increase the transmitter power while maintain laser class 1 operation.

Fraunhofer IPMS Design Capabilities

  • Tailorable field-of-view, ranging from ± 0.1°… ± 40°
  • Free in size and lens shape (diameter: 5mm… 10cm)
  • High transmission: >0.9
  • Low-cost, high-volume fabricated via injection molding
  • In house-lens optical lens characterization
  • Optional: unique features like mounting, additional lenses, randomized patterns
  • Patented technology

Design Examples

  • Example 1: FOV ± 0.5°, λ= 850nm à factor 7.6; approx. 8.8 dB more power
  • Example 2: FOV ± 0.8°, λ= 850nm à factor 12; approx. 10.8 dB more power
  • Example 3: FOV ± 5°, λ= 850nm à factor 66; approx. 18.2dB more power

Applications for Li-Fi Grathus®

In environments where traditional wireless technologies fall short, our Li-Fi (Light Fidelity) solutions deliver secure, interference-free, and ultra-fast data communication using light. Our systems enable seamless connectivity in even the most challenging conditions. Grathus can be used as classic data channel for upcoming QKD (Quantum Key Distribution)

Logistics

Fast, interference-free communication for automated systems like cranes, lifts, and storage units. Its high data rate and low latency support real-time control and monitoring, while the compact, plug-and-play design ensures easy installation on moving equipment without cabling.

Automation

High-speed, low-latency communication for real-time control of machines and robots. Its resistance to electromagnetic interference and easy integration make it ideal for harsh, high-performance factory environments.

Learn more about our comprehensive Li-Fi solutions

 

Li-Fi GigaDock®

High Performance Real-Time 
Short Range Data Link
 
  • Range: mm - cm
  • Data rate: up to 10 Gbps
  • Topology: Point-to-Point
 

Li-Fi GigaCoupler

High-Speed, Short Range Optocoupler

  • Range: mm - 10 cm
  • Data rate: up to 10 Gbps
  • Topology: Point-to-Point
 

Li-Fi Grathus®

High Performance Real-Time Data Link

 

  • Range: cm – 200m
  • Data rate: >1 Gbps
  • Topology: Point-to-Point
 

Li-Fi GigaSpot

Robust Versatile Data Link

 

  • Range: cm – 30m
  • Data rate: up to 1 Gbps
  • Topology: Point-to-Point, Point-to-Multipoint
 

Li-Fi Arthus

Low-Cost Real-Time Data Link

 

  • Range: cm – m
  • Data rate: 10 & 100 Mbps
  • Topology: Point-to-Point
 

Li-Fi TinySpot

Ultra-Low Power Data Link

 

  • Range: mm – 2m
  • Data rate: up to 20 Mbps
  • Topology: Point-to-Point
 

Li-Fi Pharlan®

Directional High Performance Data Link

 

  • Range: up to 300m
  • Data rate: ≥1 Gbps
  • Topology: Point-to-Point
 

Li-Fi Ligion®

Contactless Off-Axis Rotary Data Link

 

  • Range: up to multiple cm
  • Data rate: Multi Gbps
  • Topology: Point-to-Point
 

Li-Fi PoL

Power & Data Dual Link

 

  • Range: up to 1m
  • Data rate: up to 10 Mbps
  • Topology: Point-to-Point
 

Underwater Technologies

High Performance Underwater Link

 

  • Range: up to 100 m
  • Data rate: up to 1 Gbps
  • Topology: Point-to-Multipoint