RELATED ARTICLE

Read the article in Power Electronics Technology by Mark Valentine that reviews the Power Over Fiber system.
POWER OVER FIBER SHINES

RELATED PRODUCTS

For Fiber Optic Link Card housings and card shelves and rack mounts, see the Housings section
FIBER OPTIC LINK HOUSINGS

Power Over Fiber system (PoF)
PRODUCT DESCRIPTION

The RLH Fiber Optic Link Power Over Fiber (PoF) system provides power transmission over three multimode optical fibers. It is designed to provide true isolated power to a Fiber Optic Link CO side card when line sealing current or local AC power is not available. The PoF system delivers constant power and does not require backup batteries at the remote location.

Utilizing state of the art photonic technology the PoF system eliminates the need to run conductive copper wire into a high Ground Potential Rise (GPR) zone, and is a reliable and convenient remote powering solution.
PoF information brochure

The PoF system comprises 2 units; a Transmitter Unit to produce the light energy, and a Receiver Unit to convert that energy into DC power that can run a full spectrum of RLH Fiber Optic Links.

PoF Transmitter Unit
The PoF Transmitter unit is a self contained housing that may be 19/23” rack or wall mounted and measures H3.5”xW13”xD11”. It operates off of a 24- 56 VDC power source, and LED and LCD indicators located on the front panel report system status and operation.

The transmitter unit provides the light energy required for the receiver unit over 2 fiber strands. A third feedback fiber is used for system diganostics, and to control and monitor the Receiver Unit.

PoF Receiver Card
The PoF Receiver unit is a standard RLH single card form factor (7”x4”x1”) unit, and may be installed into any RLH Fiber Optic Link card housing. The receiver has two fiber ST photovoltaic power receivers (PPC) that convert the laser light into electrical energy, and a single fiber ST transmitter for monitoring and safety shutoffs in the event of a break in fiber continuity.

The PoF receiver provides 24VDC up to 25mA (0.6 Watts). For higher power or voltage applications, multiple receivers can be connected in series or parallel.

FEATURES
Provides true isolated power
Self monitoring
Delivers constant power
Eliminates copper wire running into a high GPR zone
Utilizes standard ST connectors
Receiver unit is compatible with wide variety of housings
STANDARD SPECIFICATIONS
TRANSMISSION METHOD:
High power light via three optical fibers
WAVELENGTH:
Multimode: 850nm
FIBER TYPE/DISTANCE:
Multimode only (62.5/125µm): 3,280ft/1km
FIBER CONNECTOR TYPE: ST
PHYSICAL DIMENSIONS:
Transmitter: W13in. x D11in. x H3.5in. (2RU), Weight 6lbs

Receiver: L7in. x W4in. x H1in. (177.8mm x 101.6mm x 25.4mm)
(Standard RLH Fiber Card Form Factor) Weight 1lb

OPERATING TEMPERATURE:
Transmitter Unit: -4°F to 131°F (-20°C to +55°C)

Receiver Card: -40°F to +158°F (-40°C to +70°C)

OPERATING HUMIDITY:
95% non-condensing
POWER:
Power Input: 24-56VDC @ 1.6A maximum (40 Watts)
Power Output: 24VDC @ 25mA maximum (0.6 Watts)
SYSTEM DISPLAY:
Status and condition LED indicators, scrollable backlit alphanumeric LCD display. (See Data Sheet)

TRANSMITTER UNIT
LARGER PICTURE

RECEIVER UNIT
LARGER PICTURE
POWER OPTIONS

The PoF Transmitter requires a local power input of 24-56VDC.

The PoF Receiver requires no power, and outputs a constant 24VDC.

POWER SUPPLY OPTIONS
We carry an extensive line of AC/DC power supplies, DC/DC converters, and battery backup systems for the PoF Transmitter Unit.

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ORDERING INFORMATION
Power Over Fiber System (PoF)
Part Number
Description
8806-1600-02

CLEI: VAMJ100KRA

Power Over Fiber Laser Transmitter Unit
Fiber Type:
Multimode
Connector Style:
ST
8806-1610-01

CLEI: VAMJ200KRA

Power Over Fiber Receiver Unit
Fiber Type:
Multimode
Connector Style:
ST

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