Mode Conditioning Patch Cords - FC, FC/APC, ST, SC, SC/APC, MT-RJ, MU / PC or APC

Mode Conditioning Patch Cords

It is known that multimode optical fiber links that use laser based transmitters may be limited in bandwidth to values less than half those of the over-filled launch bandwidth. The bandwidth is very low in the case of center-launch condition. FiberFab mode conditioning patchcords are specifically designed for launching your gigabit signal into the conventional 62.5/125 or 50/125 fiber with very high bandwidth. The FiberFab mode conditioning patchcords can improve the transmission bandwidth by 3 to 4 times and also greatly reduces modal noise.

Beauty

Typical Application

Today’s Gigabit Ethernet Switches use VCSEL’s, as the old technology LED emitters can not produce the signals required in these high bandwidth applications. The new mode conditioning assemblies are designed for use in 62.5/125 or 50/125 multimode fiber optic cabling systems, where these assemblies allow long wavelength 1300nm signals to be transmitted over good quality fiber at distances of up to 550m. The VCSEL devices used in Gigabit Ethernet applications are based on a singlemode launch condition and operate over both singlemode and multimode fiber.

Differential mode delay occurs when the transmitter device launches a singlemode laser signal into the center of the multimode fiber, resulting in the transmission of multiple signals and high attenuation. Such signals can confuse the receiver device, with resultant limitations on the operating bandwidth and especially the drive distances of Gigabit Ethernet. The 62.5/125 fiber will typically only allow a distance of 220-270m for Gigabit Ethernet using lower cost lasers operating at the 850nm. SX wavelength and longer distance requirements have to be met by the use of 1300nm electronics in conjunction with a Mode-Conditioning launch lead. The FiberFab mode conditioning cable assembly eliminates differential mode delay by moving the singlemode launch to an offset position away from the center of the fiber.

	Features
•	Increased transmission bandwidth by as much as 4 times
•	Reduced modal noise
•	Low insertion loss (< 1dB)
•	Easy installation
•	Various connector options

Description
62.5µm MMF 50µm MMF

Operating wavelength: 1310nm

Maximum insertion loss: 0.5dB

Coupled power ratio (CPR) 28 to 40dB 12 to 20dB

Back reflection
S/M channel 30dB
M/M channel 20dB

Connector finish: PC or APC

Ferrule radius of curvature:
10 to 25mm
Fiberheight: -50 to 50nm

Maximum angular offset: 1°

Sheath color: Orange (yellow for SM leg)

Connectors available
Types: FC, FC/APC, ST, SC, SC/APC, MT-RJ, MU

Length: 2000mm ± 10mm
Other lengths available to order

For full information on the FiberFab connectors used on the FiberFab patch cords, please contact the address below for a connector data sheet.

Intermateability
Optically and mechanically compatible with all
equivalent connectors.
Compliant with IEC 874-14.

Product Packaging
Each patch caord is packaged individually and individually identified for traceability, test certification is supplied for each assembly.

Temperature Cycling
(IEC 874-1 sec. 4.5.22)
-40 to +75°C, 40 cycles
=0.2dB Change

High Temperature:
(IEC 874-1 sec. 4.5.18)
75°C for 96 hours
=0.2dB Change

Damp Heat:
(IEC 874-1 sec. 4.5.19)
60°C at 95% RH, 96 hours
=0.2dB Change

Vibration (Mated Pair):
(IEC 874-1 sec. 4.5.1)
10-55 Hz, 1.5mm P to P
=0.3dB Change

Mating Durability:
(IEC 874-1 sec. 4.5.32)
1000 mating cycles
Clean every 25
< 0.2 dB Change

Operating Temperature
-40°C to +85°C