Li-Fi PoL (Power over Light)

LiFi Power over Light (PoL)

Li-Fi PoL (Power-over-Light) is a compact, self-sufficient sensor platform that combines wireless optical data communication with energy autonomy. Powered by ambient light or optional optical wireless power transfer, Li-Fi PoL eliminates the need for batteries or RF communication, making it ideal for sensitive or RF-restricted environments. Data is exchanged securely and bidirectionally via a Li-Fi TinySpot interface at typical rates of 10 Mbps over a range of up to 1 meter. The system supports a variety of sensors, including temperature, humidity, pressure, light, and vibration, within a small footprint of approximately 50 × 50 mm². Fully eye-safe (Laser Class 1), Li-Fi PoL enables maintenance-free sensing for industrial, medical, and IoT applications.

Features

  • Self-sufficient sensor nodes:
    • Powered by ambient light or optical wireless power transfer
    • Wireless data transfer via a Li-Fi interface (Li-Fi TinySpot)
    • No need radio-frequency communications
    • Safe & secure
  • Supported sensor types:
    • Temperature, humidity, pressure, light, shock / vibration,…
  • Bidirectional, optical wireless data interface
    • Data rate: typ. 10 Mbps, more on request
  • Small size (approx. 50 x 50 mm²)
  • Range: 1m
  • Laser Safety Class 1 (Eye Safe)
LiFi Power over Light (PoL)
© Fraunhofer IPMS
LiFi Power over Light (PoL) Demonstrator

Success Story: Wireless Data Communication and Power Transfer

For smart storage solutions without direct energy access and requirement for wireless data transfer

© MBDA & Fraunhofer IPMS
MBDA SmartTSC with reader module and laptop (top) MBDA SmartTSC concept (bottom).

WRF (Wireless Radio-Free) Technology: Power and Data Transfer with Light

Key Facts:

  • Development of Smart Storage and Transportation
    Container (SmartTSC) and miniaturized sensor
    module (MiniWRFSM)
  • Concept enables wireless, fast and easy readout of sensor data for health and usage monitoring while powering the sensors through light
  • Bi-directional data communication up to 16 Mbps with ultra low power consumption of sensor module

Fraunhofer IPMS Development for MBDA

  • Concept and feasibility study
  • Development of WRF module
  • Qualification
  • Pilot production

MBDA is a European and globally operating company in the defense industry with locations in France, the United Kingdom, Italy, Germany, Spain, and the USA, employing over 15,000 employees and generating a revenue of 4.5 billion euros per year. The shareholders of MBDA are Airbus, BAe Systems and the Italian company Leonardo.

Applications for PoL (Power over Light)

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.

Logistics

In industrial environments, Li-Fi PoL provides reliable sensor communication without cabling or RF interference. It powers and connects distributed sensors in hard-to-reach areas, improving machine monitoring and predictive maintenance with minimal infrastructure.

Retail

Li-Fi PoL supports wireless in-store sensing for environmental monitoring, product safety, or shelf surveillance. Its RF-free and light-powered design is ideal for retail environments with dense electronics or strict interference requirements.

Safety-critical applications

For safety-critical applications, Li-Fi PoL delivers secure, interference-free sensing, for example, monitoring pressure or vibration in gas pipelines or hazardous areas where wired or RF systems are impractical or unsafe.

Space

Li-Fi PoL is ideal for aerospace systems requiring compact, lightweight, and RF-free sensor solutions. It powers and communicates with embedded sensors in aircraft interiors or satellites, ensuring safety and performance in challenging environments.

Defense

In defense settings, Li-Fi PoL enables stealthy, low-profile sensor deployments that operate without radio emissions. It ensures secure data transfer and autonomous operation for situational awareness, asset protection, or perimeter monitoring.

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 – 10 m
  • 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 Power over Light (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