User's Manual

ModuLite™ Installation Guide OPTICAL TEST PROCEDURE
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Document No. 43-93-005-05 X1 53
followed by the clad diameter. For example, a 9/125 fiber has a core diameter of 9µm and a clad
diameter of 125µm.
core
clad
{
{
{
clad
Figure 30: Fiber Optic Cable Structure
The cables are available in two different modes, each with different propagation properties:
Property Core Clad Attenuation
Singlemode
9 µm 125 µm
.38 dB/Km
Multimode
50 µm 125 µm
1 dB/Km
Multimode
62.5 µm 125 µm
(For illustration only)
Figure 31: Singlemode - Multimode Fibers
9µm 125µm
λ1 9 125
Singlemode
fiber
λ1
50 125
Multimode fiber
λ2
λ3
@1310nm