Power Isolated Locations, Transmit Power over Fiber Optic Cable

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  • Provides true isolated power
  • Eliminates copper wire running into a High Voltage Environments and Lightning prone locations
  • Delivers constant power with Built-In Super Capacitors
  • Utilizes standard ST connectors
  • Provides up to 1 Watt of 24 Volts DC per system
  • RLH Patented Technology, US Patent Number: 7,813,646 B2
  • Receiver has wide operating temperature -40°F to +158°F (-40°C to +70°C)
  • Made in USA

Our patented Power Over Fiber (PoF) system provides power transmission over three multimode (62.5/125) optical fibers. The PoF system is able to provide true isolated power to a remote location utilizing Laser Light at the transmitter and a photovoltaic power converter at the remote location. The remote location device utilizes super capacitors to ensure a smooth and constant voltage is supplied to the remotely powered devices. RLH patented PoF system utilizes state of the art photonic technology and safety interlock systems to provide a convenient method of remote powering RLH's low power consumption Fiber Link Cards or other low power consumption devices.


The PoF Transmitter unit is a self contained housing that may be 19/23” rack or wall mounted. The housing is constructed of powder coated aluminum with LED and LCD indicators located on the front panel to report system status and operation. The PoF transmitter requires a 24~56 VDC power source. The transmitter unit contains two high power laser diodes and one fiber receiver for signal feedback.


The PoF receiver card may be installed into any Fiber Optic Link card housing. The PoF receiver card has two fiber ST photovoltaic power converters (PPC) and one fiber ST transmitter. The PPC converts laser light into electricity. The PoF Receiver will also transmit a fiber signal to the PoF transmitter unit for voltage monitoring and safety shutoffs in case of a break in fiber continuity. The PoF receiver will provide up to 1 Watt of 24 Volt DC Power, power output attenuates over distance. For higher power or voltage applications systems can be use together with the receiver cards connected in series or parallel.


For a comprehensive review of the product specs, please see the Data Sheet, or feel free to contact us with any questions.

Transmission Method:
High Power Laser light via three optical fibers

Multimode: 830nm

Fiber Type Supported:
Multimode (62.5/125µm)

Fiber Connector Type:

Power Output:
24 Volts DC, 45mA (1.08 Watts) at distance 32.8'

*Power output declines over distance, see data sheet for derating curve

Operating Consumption:
24~48VDC, 75 Watts Maximum

W 13” x L 11” x H 3.5” (not including rack ears)

Rack (Supports both 19" & 23") or Wall Mount

Operating Temperature:
Transmitter: -20˚C ~ 55˚C
Receiver: -40˚C ~ 70˚C

Power Over Fiber System Diagram

Power Over Fiber System Diagram

Power Output to Fiber Distance Derating Curve

Power Output to Fiber Distance Derating Curve

Voltage Increase - Series Wiring Diagram

Voltage Increase - Series Wiring Diagram

Current Increase - Parallel Wiring Diagram

Current Increase - Parallel Wiring Diagram


Download the Data Sheet

Download the User Guide

  • A complete system requires one (1) Transmitter Unit and one (1) Receiver Card
  • Compatible fiber cables are ordered to length by replacing -XXXX for the desired length in feet

Please submit a quote request or contact your RLH sales representative for pricing and delivery information.