8
Table 5
Characteristics of single mode and multi-mode optical fibers
Item
Single mode fiber
Multi-mode fiber
Core
Small core (10 micrometers
or less)
Larger core than single mode
fiber (50 micrometers, 62.5
micrometers or greater)
Dispersion Less
dispersion
Allows greater dispersion and
therefore, signal loss exists.
Light source and
transmission
distance
Uses lasers as the light
source often within campus
backbones for distance of
several thousand meters
Uses LEDs as the light source
often within LANs or distances
of a couple hundred meters
within a campus network
Table 6
Allowed maximum tensile force and crush load
Period of force
Tensile load (N)
Crush load (N/mm)
Short period
150
500
Long term
80
100
Fiber connectors are indispensable passive components in an optical
fiber communication system. They allow the removable connection
between optical channels, which makes the optical system debugging
and maintenance more convenient. There are multiple types of fiber
connectors.
shows an LC connector.
Figure 5
Appearance of an LC connector
