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24 MULTILINK ETHERNET COMMUNICATIONS SWITCH – QUICKSTART GUIDE
QUICKSTART GUIDE
7.2 Single and Multi-mode cable
7.2.1 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
This is a scaled drawing of both a 62.5/ 125 μm multi mode fiber and 9/125 µm single
mode fiber. The outer clad of both is 125 micrometers in diameter. The multi-mode core, at
62.5 micrometers, is a little bit thinner than the average human hair. The core of the 9/125
125µm
62.5µm
CORE
CLAD
8 µm
125 µm
CORE
CLAD