Mode Conditioning Patch Cords

It is known that multimode optical fibre links that use laser based transmitters maybe limited in bandwidth to values less than half those of the  over-filled launch bandwidth.  The  bandwidth  is very  low  in  the  case  of centre-launch condition. Optronics  Mode  Conditioning  Patch cords  are specifically  designed  for  launching  your  gigabit  signal into the conventional 62.5/125 or 50/125 fibre with very high bandwidth. The  Optronics  Mode Conditioning Patch cords can improve the  transmission bandwidth by 3 to 4 times and also greatly reduces modal noise. Therefore it will keep your transmission eye pattern open and clear.

Features

• Increased transmission bandwidth by as much as 4 times

• Reduced modal noise

• Low insertion loss (< 1dB)

• Easy installation

• Various connector options

Applications

Today’s Gigabit Ethernet Switches use VCSEL lasers, 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  or  50/125  multimode  fibre  optic  cabling systems, where these assemblies allow long wavelength 1300nm signals to be transmitted over good quality fibre at distances of up to 550m. The VCSEL devices used in Gigabit Ethernet applications are based on a Single mode launch condition and operate over both Single mode and Multimode fibre. Differential mode delay occurs when the transmitter device launches a Single mode laser signal into the centre of the Multimode fibre, 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  fibre 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 Optronics  Mode Conditioning cable assembly eliminates differential  mode  delay by moving the Single mode launch to an offset position away from the centre of the fibre where most of the impurities are found

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 Optronics connectors used on the Optronics 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 cord 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