Since the IEEE 802.3ae standard was approved in mid-year of 2002, the sales volume of Gigabit Ethernet ports has increased from hundreds of ports to tens of thousands of ports per quarter.
The specifications of Gigabit Ethernet can be divided into three types. One of these types is the fiber-based Gigabit Ethernet LAN specification. And the fiber-based Gigabit Ethernet LAN specification has six types. They are 10GBase-SR, 10GBase-LR, 10GBase-LRM, 10GBase-ER, 10GBase-ZR and 10GBase-LX4. They all can be applied into the SFP modules.
10GBASE-SR SFP Module
10GBASE-SR is defined by the standard of IEEE 802.11ae. 10GBASE-SR is one of the six kinds of specifications for 10GbE LAN (regional communications network) series. It transmits over multimode optical fiber, allowing the light with a wavelength of 850 nm to transmit at 300 m distance. The “SR” stands for “short range”. Its transmission rate is 10.3124Gbps. Because of the coding using the 64B / 66B mode, the actual data transfer speed is 10Gbps. 10GBase-SR SFP modules are the smallest fiber modules, having the advantages of the lowest cost, lowest power consumption.
The specifications of Gigabit Ethernet can be divided into three types. One of these types is the fiber-based Gigabit Ethernet LAN specification. And the fiber-based Gigabit Ethernet LAN specification has six types. They are 10GBase-SR, 10GBase-LR, 10GBase-LRM, 10GBase-ER, 10GBase-ZR and 10GBase-LX4. They all can be applied into the SFP modules.
10GBASE-SR SFP Module
10GBASE-SR is defined by the standard of IEEE 802.11ae. 10GBASE-SR is one of the six kinds of specifications for 10GbE LAN (regional communications network) series. It transmits over multimode optical fiber, allowing the light with a wavelength of 850 nm to transmit at 300 m distance. The “SR” stands for “short range”. Its transmission rate is 10.3124Gbps. Because of the coding using the 64B / 66B mode, the actual data transfer speed is 10Gbps. 10GBase-SR SFP modules are the smallest fiber modules, having the advantages of the lowest cost, lowest power consumption.
10GBASE-LX4 SFP Module
With the technology of WDM, 10GBase-LX4 works in 3.125Gb/s separate light source to achieve 10Gb / s transmission by using four wavelengths unified as 1300 nm. The transmission distance in mutimode fiber is 2 ~ 300 m, while in singlemode fiber, the effective transmission distance is up to 10km. It is mainly used in the environment which supports both multimode and singlemode fiber.
10GBASE-LR SFP Module
The “LR” in the 10GBase-LR SFP modules stands for “Long Range”. 10GBase-LR can support longwave (1310 nm) singlemode fiber encoded with 64B/66B. Its effective transmission distance is from 2 m to 10 km. And the longest transmission distance can be up to 25 km. What is more, 10GBase-LR SFP modules is cheaper than 10GBase-LX4 SFP modules.
10GBASE-LRM SFP Module
The “LRM” stands for “Long Reach Multimode”. Its effective transmission distance is about 220 m, and can be up to 260 m in OM3 fiber. Compared with 10GBASE-LX4 SFP module, it has lower cost and lower power consumption.
10GBASE-ER SFP Module
“ER” in the 10GBase-ER SFP module stands for “Extended Range”. It can support long wave (1550 nm) singlemode fiber, and the effective transmission distance is about 2 m to 40 km.
10GBASE-ZR SFP Module
10GBase-ZR SFP module can support long wave (1550 nm) singlemode fiber, and the effective transmission distance is up to 80 km. It is not covered by IEEE 802.3ae, but defined by OC-192/STM-64 SDH/SONET.
With the technology of WDM, 10GBase-LX4 works in 3.125Gb/s separate light source to achieve 10Gb / s transmission by using four wavelengths unified as 1300 nm. The transmission distance in mutimode fiber is 2 ~ 300 m, while in singlemode fiber, the effective transmission distance is up to 10km. It is mainly used in the environment which supports both multimode and singlemode fiber.
10GBASE-LR SFP Module
The “LR” in the 10GBase-LR SFP modules stands for “Long Range”. 10GBase-LR can support longwave (1310 nm) singlemode fiber encoded with 64B/66B. Its effective transmission distance is from 2 m to 10 km. And the longest transmission distance can be up to 25 km. What is more, 10GBase-LR SFP modules is cheaper than 10GBase-LX4 SFP modules.
10GBASE-LRM SFP Module
The “LRM” stands for “Long Reach Multimode”. Its effective transmission distance is about 220 m, and can be up to 260 m in OM3 fiber. Compared with 10GBASE-LX4 SFP module, it has lower cost and lower power consumption.
10GBASE-ER SFP Module
“ER” in the 10GBase-ER SFP module stands for “Extended Range”. It can support long wave (1550 nm) singlemode fiber, and the effective transmission distance is about 2 m to 40 km.
10GBASE-ZR SFP Module
10GBase-ZR SFP module can support long wave (1550 nm) singlemode fiber, and the effective transmission distance is up to 80 km. It is not covered by IEEE 802.3ae, but defined by OC-192/STM-64 SDH/SONET.
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