Huawei AR500 Series Hardware Description page 750

Industrial switch routers
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Huawei
AR500&AR510&AR531&AR550&1500&AR2500
Industrial Switch Routers
Hardware Description
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Table 7-1
Table 7-1 Optical module classification
Encapsul
ation
Type
SFP
eSFP
Issue 10 (2019-03-06)
– XFP: 10 Gigabit small form-factor pluggable. X is the Roman numeral 10, meaning
that all XFP optical modules provide a 10 Gbit/s transmission rate. XFP optical
modules support LC fiber connectors and are hot swappable. They are wider and
longer than SFP+ optical modules.
– QSFP+: quad small form-factor pluggable. QSFP+ optical modules support MPO
fiber connectors and are larger than SFP+ optical modules.
Classified by physical layer standards
Different physical layer standards are defined to allow data transmission in different
modes. Therefore, different types of optical modules are produced to comply with these
standards. The Standard column of
Classified by modes
Optical fibers are classified into single-mode and multimode fibers. Therefore, optical
modules are also classified into single-mode and multimode modules to support different
optical fibers.
– Single-mode optical modules are used with single-mode fibers. Single-mode fibers
support a wide band and large transmission capacity, and are used for long-distance
transmission.
– Multimode optical modules are used with multimode fibers. Multimode fibers have
lower transmission performance than single-mode fibers because of modal
dispersion, but their costs are also lower. They are used for small-capacity, short-
distance transmission.
provides optical module classification based on different factors.
Rate
Standard
FE
100BASE-FX (IEEE
802.3u)
FE
100BASE-LX (IEEE
802.3ah)
100BASE-BX (IEEE
802.3ah)
GE
1000BASE-SX (IEEE
802.3z)
1000base-LX/LH (IEEE
802.3ah)
Copyright © Huawei Technologies Co., Ltd.
7 Pluggable Modules for Interfaces
Table 7-1
lists the physical layer standards.
Description
Uses one Rx multimode fiber and
one Tx multimode fiber to transmit
data at 100 Mbit/s over a distance
within 2 km.
Uses one Rx single-mode fiber and
one Tx single-mode fiber to transmit
data at 100 Mbit/s over a distance
within 80 km.
Uses one single-mode fiber for
bidirectional transmission at 100
Mbit/s over a distance within 15 km.
Uses one single-mode fiber for
bidirectional transmission at 1 Gbit/s
over a distance within 1 km.
Uses one Rx single-mode fiber and
one Tx single-mode fiber to transmit
data at 1 Gbit/s over a distance
within 40 km.
739

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