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A Mode Conditioning Patchcord (MCP) is a duplex multimode cord that has
a small length of singlemode fiber at the start of the transmission length.
The basic principle behind the cord is that you launch your laser into
the small section of single mode fiber. The other end of the singlemode
fiber is coupled to the multimode section of the cable with the core offset
from the center of the multimode fiber.
Gigabit Ethernet (GbE)
requires a laser light source instead of an LED source to power the network,
due to the lasers faster rise and fall times, the pulses of light injected
into the fiber are more tightly packed together thus greater bandwidth.
Without the use of a MCP, multiple signals are generated when a singlemode
laser launch into the center of a multimode fiber. Multiple signals can
be generated that overlap each other and make it difficult for the receiver
to interpret. This condition is known as Differential Modal Delay (DMD).
MCP provided the offset between the singlemode and multimode fiber that
eliminates the DMD effect.
Features:
- Compliant with
IEEE802.3z
- Eliminates DMD
phenomenon
- Low Insertion
Loss (<0.3dB)
- Rugged offset
splicing closure.
- Available in 62.5
or 50mm multimode fiber
| Description |
62.5µmMMF |
50µmMMF |
Unit |
| Maximum
Insertion loss |
0.3
|
dB |
| Optical
center offset between SMF and MMF |
17
< Offset < 23 |
10
< Offset < 16 |
µm |
| Maximum
angular offset |
1
|
degree |
| Ferrule
Geometry |
Minimum |
Nominal |
Maximum |
| Radius
of Curvature (mm) |
10 |
15 |
25 |
| Apex
Offset (µm) |
0 |
30 |
50 |
| Planar
Fiber Height (nm) |
-10 |
0 |
200 |
| Fiber
/ Ferrule Roughness (nm) |
0 |
0 |
50 |
| Length tolerance* |
+ |
- |
| L < 1m |
10cm |
0cm |
| 1 < L <
5m* |
10% |
0% |
| 5 < L <
20m* |
7% |
0% |
| L > 20m* |
5% |
0% |
* Absolute tolerance
equal to the percentage of the total length.
Ordering Information:
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