10G connections in telecommunication networks have gradually moved from backbones to layer 2 and layer 3. Both the technology and the market of 10G optics are very mature now. 10G modules have advanced from XENPAK transceiver, the first generation of 10G transceiver, to SFP+ transceiver, which is now the most popular 10G transceiver module. Besides, the price of 10G transceiver modules is getting lower, making them become more affordable. This article offers some basic information about 10G SFP+ optics and their connection instructions.

10G SFP+ transceiver has the same form factor of Gigabit SFP optical transceiver. Many SFP+ transceiver modules can support both 1G and 10G data rates to increase their flexibility during practical using. An SFP+ transceiver module usually has two LC ports (as shown in the following picture). A 10G BiDi SFP+ transceiver, which transmits and receives signals using the same fiber optic cable, has only one LC port.

Other than fiber optic transceivers, there are various factory-terminated copper cables and fiber optic cables that are terminated with an SFP+ module on each end of the cable. There are mainly three types of 10G SFP+ cables: 10G SFP+ passive direct attach copper cable, such as HP J9281B compatible SFP+ passive direct attach copper cable, or HP JG081C compatible 10G SFP+ passive direct attach copper cable, 10G active direct attach copper cable and 10G SFP+ active optical cable, such as Cisco SFP-10G-AOC10M compatible 10G SFP+ active optical cable. These 10G SFP+ cables eliminate the use of additional patch cables and can be directly plugged into SFP+ ports on switches. It is acceptable that these SFP+ cables are cost-effective and reliable solutions for 10G connections over short distances.

There are a variety of 10GBASE SFP+ transceivers according to the IEEE standard. For short transmission distances, you can choose 10GBASE-SR SFP+ transceiver or 10GBASE-LRM SFP+ transceiver, which can support transmission distance up to 300 meters and 220 meters over multimode fiber cables separately. 10GBASE-SR SFP+ transceiver module, working in wavelength of 850nm, is the most commonly used transceiver type for short distance transmission. For long distance transmission, there are also multiple choices of 10G SFP+ transceiver modules for you, such as 10GBASE-LR SFP+ transceiver, 10GBASE-ER SFP+ transceiver, 10GBASE-ZR SFP+ transceiver, CWDM SFP+ transceiver, DWDM SFP+ transceiver, BiDi SFP+ transceiver, etc. These transceiver modules can support transmission distances ranging from 10 km to 120 km over single-mode fiber cables.

And there is a special type of 10G SFP+ transceiver known as dual-rate SFP+ transceiver. A dual-rate SFP+ transceiver is a kind of optical transceiver which can support two different data rates. For example, Intel E10GSFPSR compatible dual-rate 1000BASE-SX and 10GBASE-SR SFP+ transceiver can be adjusted to support both 1G and 10G data rate up to 300m over OM3 multi-mode fiber. 1G/10G dual-rate SFP+ transceiver is common dual-rate optical transceiver in today's 10G SFP+ transceiver market. With dual-rate optical transceivers, users can achieve the full forward and backward compatibility of their systems at a low cost.

During the selection of fiber optic patch cables for 10G SFP+ transceivers, the transmission distance is the first element to consider. Single-mode fiber optic patch cables are used for long distance transmission and multi-mode fiber optic patch cables are designed for short distance transmission. Then you need to take the transmitting and receiving ports on the SFP+ transceivers into consideration. Most 10G SFP+ transceivers use duplex LC port, and BiDi SFP+ transceivers use simplex port. Thus, based on the port type on the SFP+ transceiver, simplex LC fiber patch cords or duplex LC fiber patch cords are chosen accordingly . The following chart introduces detailed cabling information for 10G SFP+ transceivers.

Though the era of 40/100 GbE is approaching, 10GbE still accounts for a large proportion of the market. SFP+ transceiver modules provide an efficient way for connecting your 10G networks. This post shares some basic information of 10G SFP+ optics and cabling information. For more specific information, please visit FS.COM, where you can find a variety of 10G SFP+ optics.

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