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How to select a 40G QSFP+optical module
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How to select a 40G QSFP+optical module

Views: 0     Author: Site Editor     Publish Time: 2022-10-18      Origin: Site

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40G QSFP+optical module means that the transmission rate is 40G, and the packaging of 40G optical module is QSFP+. The 40G optical module has four independent full duplex receiving and transmitting channels, and the receiving and transmitting rate of each channel is 10G, which constitutes the 40G transmission rate. Let's introduce the types of 40G QSFP+optical modules.

The IEEE organization has developed a variety of transmission protocols for 40G QSFP+optical modules. Common ones are 40G BASE-SR4, 40G BASE-LR4, 40G BASE-BiDi, 40G BASE-ER4, etc. The interface types, transmission distances, and operating wavelengths of these optical modules are different. The following is a list of parameters of 40G optical modules for your reference.

40G SR4, 40G eSR4 and 40G BIDI are multimode optical modules, which need to use OM3/OM4 optical fiber jumper for transmission. Due to the short transmission distance, they are suitable for equipment interconnection in the data center; The interface types of 40G SR4, 40G eSR4 and 40G PSM4 are MPO interfaces. This type of interface can not only connect 40G links, but also use MPO-LC jumpers to connect 40G links to 10G links; The interface type of LX4, LR4 and ER4 is LC, which needs to be used with single-mode optical fiber OS2 jumper. The transmission distance is more than 2KM, and the maximum is 40KM.

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