Although 40G, 100G data centers are growing rapidly, but in most scenarios, such as a lot of schools, units, the company's engine room is still based 10G Ethernet-based network system, therefore 10G optical module still has a high demand, among 10G SFP + optical modules and 10G XFP optical module market share of the largest, if you can replace each other between the two optical modules? What kind of optical modules more responsive to the future development trend?
What is 10G SFP + 10G XFP optical module and an optical module
10G SFP + optical modules and 10G XFP optical module means can transmit and receive 10G data signals per second, and can light-electricity, the optical module electroporation light, and SFP and XFP represented is its package, the optical module package form may also be divided into XENPAK, X2, XFF, etc., but the current mainstream 10G optical modules or XFP optical modules and SFP + optical module two.
10G SFP + optical modules 
and now users in order to achieve large-scale, high-bandwidth, high flexibility, high efficiency, highly interconnected modern data center, data center ecosystem in order to further promote the optical interconnection technology, is experiencing unprecedented growth and innovation. With the maturity of 10G network technology, most users have been using the 10G optical module successfully built their own network transmission system. So, 10G SFP + optical modules and 10G XFP optical module how to choose?
10G SFP + optical modules and 10G XFP optical module What is the difference
SFP + XFP optical module and the optical module is the optical module 10G, 10G which are mainly used for fiber optic transmission networks. However, there are still some of the differences between both of them.
①10G SFP + module optical SFP optical module is upgraded, based SFP package, and 10G XFP optical module is based on an XFP standard.
②10G SFP + optical module 10G XFP optical module smaller in size than the exterior, so 10G SFP + module to meet the volume requirements of optical high-density optical card module, but 10G XFP optical module bulky, easier to heat.
③10G SFP + module has an optical signal modulation function, serial / deserializer, MAC, Clock and Data Recovery (CDRs of), and an electronic dispersion compensation (EDC) to move the function module from the main board, and 10G XFP optical module further having this feature, therefore, when the switch on the main board router 10G SFP + module requires the optical function is not integrated, the need to make 10G XFP optical module.
④10G SFP + is lower than the cost of the optical module 10G XFP optical module, and can communicate with other types of optical module 10G.
⑤ 10G of the communication, may be used as a high-speed cable (DAC) is connected directly to the cable with two optical 10G SFP + module port can not buy two optical 10G SFP + module alone, and this pattern did not 10G XFP .
⑥ In the switch port can accept 10G SFP + SFP optical module, and can only accept port 10G XFP 10G XFP optical module.
10G XFP optical module
From the above point of view difference, SFP + optical module small, low-cost, multi-application features it more suitable for high-density data center.
Most mainstream already small form factor pluggable module, and supports digital diagnostic functions 10G SFP + optical module, the optical module is now the major manufacturers have basically supplied SFP package types are Gigabit rate above, wherein mainstream 10 Gigabit module, 10G SFP + optical module with its Gigabit miniaturization and low cost advantages to meet the needs of high-density equipment optical module, now replaced 10G 10G XFP optical modules become mainstream.
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