With the increase of network users and growing demands of network services which include varied multimedia information, such as the audio and video signal, the requirement to the network bandwidth is rising rapidly. Fiber optic transceivers can satisfy such demand of users, and ensure enough network bandwidth for the users’ data to be transferred by providing enough reliability. They are available for several industrial standards, including Ethernet, Fast Ethernet, Gigabit Ethernet, 10Gbit Ethernet.

The following Ethernet standards to be introduced are versions mainly over optical fibers, single-mode fibers (SMF), or multi-mode fibers (MMF).

Ethernet is a family of computer networking technologies for local area networks (LANs) and metropolitan area networks (MANs). Ethernet was developed at Xerox PARC between 1973 and 1974. Commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3, Ethernet has since been refined to support higher bit rates and longer link distances. As a high-speed, general-purpose, widely used network, 10Mbit/s Ethernet has evolved into the most popular physical and link layer protocol today to connect users to Internet and let them share the information.

By the mid of 1990s, all 10Mbit/s Ethernet installation base had been upgraded to 100Mbit/s Fast Ethernet. Fiber optic Fast Ethernet standards include 100BASE-FX, 100BASE-SX, etc.

• 100BASE-FX uses a 1300nm light to transmit signal via two strands of optical fibers and the maximum distance is 2 km for full duplex over MMF.

• 100BASE-SX a lower cost alternative to using 100BASE-FX, since it uses short wavelength optics which are significantly less expensive than the long wavelength optics used in 100BASE-FX. 100BASE-SX can operate at distances up to 550 meters.

By the end of 1990s and early 2000s, most 100Mbit/s Fast Ethernet installation base had been upgraded to 1000Mbit/s Gigabit Ethernet. Fiber optic cords are replacing copper wires as the transmission medium for high speed transmission. For fiber optic transceivers, the related industry standards include 1000Base-SX, 1000Base-LH, etc.

• 1000BASE-SX uses 850nm light to transmit signal over MMF. The standard specifies a distance capability between 220 meters and 550 meters, but via fiber optics with good quality, much longer distances can be reached.

• 1000Base-LH, called either 1000BASE-LX/LH or 1000BASE-LX10, is not a standard but accepted by the industry. It is backward compatible with 1000Base-LX, but achieves significantly longer distances over a pair of SMFs due to higher quality optics, such as MGBLH1 and J4860C listed in Fiberstore. Fiberstore compatible Cisco MGBLH1 supports up to 40 km link length over SMF. And the Fiberstore compatible HP J4860C provides a full-duplex gigabit solution up to 70 km on SMF.

10Gbit Ethernet is also called 10GigE. This was first published in 2002 and is still the fastest Ethernet standard. This standard includes 10GBASE-SR, 10GBASE-LR, etc.

• As a port type for MMF, 10GBASE-SR uses 850nm lasers and has a maximum range of 26 meters over obsolete FDDI-grade MMF, 33 meters over OM1, 82 meters over OM2, 3oo meters over OM3, and 400 meters over OM4.

• 10GBASE-LR ("long reach”) is a port type for SMF and uses 1310nm lasers. Fiberstore 10GBASE-LR optic transceivers allow efficient coupling into the small core of single mode fiber over greater distances. Like EX-SFP-10GE-LR, Fiberstore compatible Juniper EX-SFP-10GE-LR reaches maximum distance up to 10 km with the operating data rate up to 10.3Gbps.

Actually, existing network is difficult to satisfy the requirement of users who need more and more high speed running over the network. Ethernet has always been evolved to expand the bandwidth in telecommunications. Fiberstore offers these Ethernet solutions. Various fiber optic transceivers (MGBLH1, J4860C, X-SFP-10GE-LR) are available in Fiberstore, e.g GBIC, SFP+, XFP. They are 100% compatible with major brands like Cisco, HP, Juniper, and backed by a lifetime warranty.

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