H3C Technologies H3C SR6600-X - Manual (Page 33)

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Figure 25 SFP+ transceiver module
Fiber cable overview
You can use an optical fiber to connect a fiber Ethernet port or 10 Gbps Ethernet port. In addition, an
optical fiber can connect these types of interface modules: HIM-4GBP/HIM-8GBP, HIM-CL1P/HIM-CL2P,
HIM-CLS1P/HIM-CLS2P, HIM-MSP2P/HIM-MSP4P, HIM-PS1P, HIM-AL1P/HIM-AL2P, HIM-RS2P, or
HIM-1EXP.
Optical fibers feature low loss and long transmission distance.
Optical fibers can be classified into single mode fibers and multi-mode fibers. A single mode fiber
carries only a single ray of light; a multi-mode fiber carries multiple modes of lights.
Table 9 Characteristics of single mode and multi-mode optical fibers
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
Users 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 10 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.
Figure 26 shows an LC
connector.