Fraunhofer Institute for Photonic Microsystems
Fraunhofer Institute for Photonic Microsystems

Li-Fi GigaCoupler

High-Speed, Short Range Optocoupler

Li-Fi GigaCoupler

GigaCoupler evaluation kit with adjustable distance
GigaCoupler evaluation kit with adjustable distance

The GigaCoupler is a next generation optocoupler. Optocouplers, also known as opto-isolators, are electronic components that transfer electrical signals using light waves to provide electrical isolation between different sections of a circuit. They consist of a light-emitting diode (LED) and a photosensitive device, such as a photodiode, phototransistor, or photomultiplier, housed together in a single package.

We are developing a high speed, real-time, versatile optocoupler.

Targeted specifications

  • Data rates: 20 Mbps up to 1 Gbps, 5 Gbps, potential up to 10 Gbps
  • Bi-directional, full duplex
  • Real-Time-Communication
  • High Isolation Voltage: depending on distance, >>100 kV possible
  • Range: 10 mm … 100 mm, Rotation: 360°
  • Small size: 5 mm x 5 mm footprint
  • Position Tolerance: approx. ±2 mm@ 25 mm range (@1 Gbps data rate)
  • SMD solder able
  • Electrical Interface: single-ended or differential, CML/LVDS like
  • Power Supply: 3.3 V or 2.5 V
  • Low Power Modi: automatic RX & manual TX power down
  • Laser Class 1
  • Multiple patented technology
Schematic of the Fraunhofer IPMS GigaCoupler
Schematic of the Fraunhofer IPMS GigaCoupler
Applications for the Fraunhofer IPMS GigaCoupler
Applications for the Fraunhofer IPMS GigaCoupler

Potential applications

  • High-Speed Digital Interfacing for Instrumentation and Control Devices
    • Isolated A/D or D/A conversion
    • For instance: power analyzers, active probes
  • Factory Networking
    • Digital fieldbus isolation: ProfiNET, EtherCAT, POWERLINK, Modbus, SERCOS, CC-Link, DeviceNet, Profibus,
    • Programmable logic controller (PLC) and automated test equipment (ATE) interface isolation
  • Computer Peripheral Interface, Microprocessor System Interface
    • High-speed digital input/output
  • Power Supplies
    • Feedback control in high-voltage digital power supplies
    • Ground loop elimination

 

Download

Applications for Li-Fi GigaCoupler

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.

Smart power grid

GigaCoupler enables secure, high-speed optical isolation for smart grid systems, ensuring real-time monitoring and control up to 10 Gbps. Its high-voltage isolation and immunity to electromagnetic interference (EMI) make it ideal for substations, renewable energy integration, and distributed energy resources.

Data commnunication

GigaCoupler delivers full-duplex optical data transmission up to 10 Gbps with high electrical isolation. Designed for mission-critical networks and high-speed digital communication, it ensures stable, interference-free links in both industrial and enterprise environments.

Microcontroller interface

GigaCoupler provides fast isolated communication between microcontrollers and peripherals, reaching up to 10 Gbps while protecting sensitive circuits from voltage transients. It simplifies embedded system design by replacing bulky galvanic isolation solutions with a compact, high-speed optical link.

Audio equipmemt

GigaCoupler ensures noise-free optical audio transfer with up to 10 Gbps data rates for high-resolution digital audio. It eliminates ground loops and interference, making it ideal for professional audio systems, broadcast equipment, and high-fidelity home audio.

Measurement tools

GigaCoupler offers interference-free high-speed data transfer for measurement instruments, enabling precise readings in challenging environments. Its optical link provides safe, high-voltage measurement isolation for oscilloscopes, sensors, and industrial test equipment.

Motor control

GigaCoupler delivers low-latency optical motor control signals with complete electrical isolation, reducing EMI and enhancing reliability in industrial automation, robotics, and servo drives. It supports both precision positioning and high-torque control applications

Telecommunication

GigaCoupler provides secure high-speed optical communication up to 10 Gbps for telecom networks, base stations, and optical backhaul systems. Its robust design ensures performance in high-interference RF zones and across wide temperature ranges.

Automotive

GigaCoupler supports isolated high-speed in-vehicle networks for real-time communication in advanced driver-assistance systems (ADAS) and electric vehicle control. Its compact footprint and high immunity to noise suit modern automotive electronics and EV power systems.

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
more info
 

Li-Fi GigaCoupler

High-Speed, Short Range Optocoupler

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

Li-Fi Grathus®

High Performance Real-Time Data Link

 

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

Li-Fi GigaSpot

Robust Versatile Data Link

 

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

Li-Fi Arthus

Low-Cost Real-Time Data Link

 

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

Li-Fi TinySpot

Ultra-Low Power Data Link

 

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

Li-Fi Pharlan®

Directional High Performance Data Link

 

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

Li-Fi Ligion®

Contactless Off-Axis Rotary Data Link

 

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

Li-Fi PoL

Power & Data Dual Link

 

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

Underwater Technologies

High Performance Underwater Link

 

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

Related Links: