QS–8
UR SWITCH MODULE – QUICKSTART GUIDE
QUICKSTART GUIDE
QS.3.2 Single and Multi-mode cable
Fiber Cable Cross Section and Physical Specifications
Multi Mode
• 62.5/125 µm
• 50/125 µm*
Single Mode
• 9/125 µm
* Will become more popular as baud rate goes up
The above are scaled drawings of both a 62.5/125 µm multi mode fiber and 9/125µm
single-mode fiber. The outer cladding of both is 125 micrometers in diameter. The multi-
mode core, at 62.5 micrometers, is a little thinner than the average human hair. The core of
125µm
62.5µm
CORE
CLAD
8 µm
125 µm
CORE
CLAD
