Huawei S6700 Series

Figure 6-11 Structure of a fiber pigtail
Fiber pigtails are classified into single-mode and multimode fiber pigtails and are used for short-
distance connections.
Optical Fiber, Optical Connector, and Fiber Adapter
Optical Fibers
Optical fibers are classified into single-mode fibers and multimode fibers.
l Single-mode fibers have a diameter of 5-10 μm and transmit laser light in one mode with
a specified wavelength. These fibers support a wide frequency band and a high transmission
capacity, so they are used for long-distance transmission. Most single-mode fibers are
yellow, as shown in Figure 6-4.
l Multimode fibers have a diameter of 50 μm or 62.5 μm and transmit laser light in multiple
modes with a specified wavelength. These fibers have a lower transmission capacity than
single-mode fibers and are used for short-distance transmission. Model dispersion occurs
during transmission over multimode fibers. Most multimode fibers are orange, as shown
in Figure 6-5.
Optical Connector
Optical connectors are used to connect optical fibers of the same type. Table 6-5 lists common
optical connectors.
Table 6-5 Common optical connectors
Connector
Type
Optical Connector
Square
connector
SC/PC
connector
LC/PC
connector
MTRJ/PC
connector
MPO connector
Round
connector
FC/PC
connector
ST/PC
connector
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S6700 Series Ethernet Switches
Hardware Description 6 Cables
Issue 12 (2015-07-31) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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