Recently in the background received a lot of user consultation about 400G optical module information, that 400G optical module as the current mainstream optical module type, what problems are concerned? Let's take a look at the detailed answer!

1.What is 400G QSFP-DD optical module?

A:400G optical module refers to the transmission rate of 400Gbps optical module products. At present, the mainstream package types are QSFP-DD and OSFP. Qsfp-dd is a high-speed optical module interface specification, and the upgraded version of QSFP interface supports 400G high-speed transmission. The optical fiber is used as the signal transmission medium, and the electrical signal is converted into optical signal and transmitted in the optical fiber.

2.What are the common types of 400G QSFP-DD optical modules on the market?

A:The common 400G QSFP-DD optical module on the market has the following types: QSFP-DD SR8, QSFP-DD DR4, QSFP-DD FR4, QSFP-DD FR8, QSFP-DD LR4, QSFP-DD LR8, and QSFP-DD ER8 Optical modules.

3.What are the differences between QSFP-DD and OSFP optical modules?

A:QSFP-DD size is smaller, more suitable for data center applications, is the mainstream development direction, OSFP package size is slightly larger, greater power consumption, more suitable for telecommunications applications. In contrast, the QSFP-DD interface provides a four-channel small size and double port density, OSFP of 8 high-speed electrical channels, QSFP-DD good compatibility and perfect support for 400G is still the market choice.

4.What is the transmission distance of 400G QSFP-DD optical module?

A:The transmission distance of a 400G QSFP-DD optical module depends on the type of optical fiber used and the specifications of the optical module. Generally speaking, it can support a transmission distance of 100m-40km.

5.What are the application scenarios of the ETU-LINK 400G QSFP-DD optical module?

A:The 400G QSFP-DD optical module is usually used in scenarios with high bandwidth requirements, such as data center internal connections, data center interconnection, and connections between network devices.

6.Can the OSFP optical module be used on one end of the 400G link, and the QSFP-DD optical module is used on the other end?

A:Yes. OSFP and QSFP-DD describe the physical dimensions of the optical module. As long as the protocol standard specifications are the same (that is, both ends of the link are 400G-LR4 or 400G-FR4, etc.), OSFP and QSFP-DD optical modules can be compatible with each other.

7.Can 400G OSFP optical module be used on the QSFP-DD port?

A:No. The physical dimensions of the QSFP-DD and OSFP optical modules are not the same, and the Goldfinger protocols are also different and cannot be compatible.

8.What are the advantages and disadvantages of OSFP and QSFP-DD optical modules?

A:The size of the OSFP is not compatible with some photoelectric interfaces, QSFP-DD based on the QSFP size, an additional row of electric pins. Therefore, it can be well backward compatible with 40G and 100G QSFP optical modules, and can also be compatible with QSFP28 optical modules. However, in terms of transmission power, the heat sink of the OSFP optical module is integrated in the interior of the module housing, and has a larger heat dissipation surface area than the QSFP-DD optical module, so that the thermal contact between the heat dissipation component and the heat sink is optimal, and the heat dissipation performance is better than that of the QSFP-DD optical module.

9.how to choose a suitable 400G QSFP-DD optical module?

A:When selecting a 400G QSFP-DD optical module, factors such as transmission distance, optical fiber type, power consumption, and compatibility need to be considered. Also ensure compatibility with other devices.

10.ETU-LINK can provide 400G optical module?

A:Yes, welcome to consult.

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