4 10 Gigabit Ethernet Fiber-optic Interfaces
TABLE 8.3 Fast Ethernet and Gigabit Ethernet Fiber-optic Interfaces
Interface Fiber Type Freq. Reach Applications
100 Base-FX2 MMF Serial 1310 nm 2 km Data center
1000 Base-SX MMF Serial 850 nm 2??“220 m Intraoffice cabling, data center
1000 Base-LX MMF Serial 1310 nm 2??“550 m Intraoffice cabling, data center
1000 Base-LX SMF Serial 1310 nm 5??“10 km Data center, campus LAN
210 Chapter 8
Early Renditions for Fast Ethernet and Gigabit Ethernet The first 10 Mbps fiber-optic
Ethernet interface was standardized in 1996 via the ISO/IEC 10 Base-F specification.
This interface was defined over two MMF spans and supported distances up to 2 km
(50 or 62.5 ?µm core). At about the same time, the IEEE introduced the first Fast
Ethernet 100 Base-F standard for MMF by adapting proven transceiver and encoding
schemes from Fiber Distributed Data Interface (FDDI) technology. Nevertheless, no formal
standard has been developed for Fast Ethernet over SMF, although many vendors
have proprietary solutions on the market (1310/1550 nm, 10??“100 km reach).
Ethernet??™s entry into the gigabit-fiber realm came in 1998 with the approval of the
IEEE 802.
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