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10 Gigabit Ethernet is a group of computer networking technologies for transmitting Ethernet frames at a rate of 10 gigabits per second. Over the years of 10 gigabit Ethernet’s existence, there have been numerous different form factors and optics types introduced, such as XFP, SFP and SFP+. Today we are going to talk about 10GBASE SFP modules which can support 10 Gigabit Ethernet.

To accommodate the ever-growing spectrum of 10 GE applications, Fiberstore currently supports several types where each technology is cost-optimized for the reach and transmission media demanded by particular 10 GE applications. As we all know, SFP can transmit signals over both singlemode fiber and multimode fiber. So next, 10 Gigabit Ethernet SFP will be introduced in these two ways.

10GBase-SR

10GBase-SR is the original multimode optics specification, and is still by far the most commonly used. As it uses a single, low cost solid state laser assembly, it is also the least expensive of the optical modules available for a 10GbE platform. However, 10GBase-SR is very sensitive to fiber type.

10GBase-LX4

To overcome the distance limitations of SR optics, the 10GBase-LX4 standard was developed. LX4 uses 4 lasers, each operating at a different wavelength, at a 2.5Gbps data rate. This results in a range of 240-300 meters, depending on cable grade. However, due to the complex laser assembly, it is not possible to get LX4 optics in XFP or SFP+ versions. With the ready availability of OM3 fiber and newer standards that provide long reach over multimode with a single laser, LX4 is rapidly becoming obsolete.

10GBase-LRM

The replacement to LX4, 10GBase-LRM will reach up to 220m over standard multimode fiber, but without the complexity of the LX4 optics. Instead, a single laser operating at 1310nm is used. This allows LRM optics to be packaged in XFP and SFP+ form factors.

10GBase-LR

10GBase-LR can reach up to 10km over singlemode fiber. There is no minimum distance for LR, either, so it is suitable for short connections over singlemode fiber as well.

10GBase-ER

10GBase-ER can reach up to 40km over singlemode fiber. Due to the laser power, attenuation is required for links less than 20km long.

10GBase-ZR

ZR optics can reach up to 80km over singlemode fiber. Due to the very high transmit power, significant attenuation is needed for shorter links. Use of ZR optics should be preceded with an optical power test of the fiber span in question to ensure a problem-free deployment. Interestingly, 10GBase-ZR is actually not an IEEE standard, though most vendors offer a ZR option.

10GBase-LW

10GBase-LW optics use the same laser, and have the same specifications as the 10GBase-LR optics. However, the LW optics present SONET/SDH physical signaling, allowing LW-equipped devices to interface directly with an existing OC192 transport infrastructure. LW optics are only available in XENPAK and X2 form factors. XFP-based cards move this functionality from the transicever to the card itself, so make sure that if this functionality is needed, that the card itself has this support. The primary example is the as in the SPA-1X10GE-L-V2 vs the SPA-1X10GE-LW-V2.

As one of the largest SFP modules’ suppliers in the world, Fiberstore offers all the kinds above with good quality and lower price. And these days, there are some discounts for customers. Want to know more, please contact with sales@fiberstore.com.