Shulou(Shulou.com)06/01 Report--

With the development of the network, the upgrade of the 10G to 40G network is the requirement of the network, but there is a very big problem in the construction of the cable system during the upgrade, especially the short-distance transmission of 40G. In order to solve this problem, engineers developed the 40G QSFP+ BiDi SR4 optical module.

Today, we will introduce this to you and hope it will be helpful to you!

1. What is 40G QSFP+ BiDi SR4?

40G QSFP+ BiDi SR4 is different from other 40G QSFP+ optical modules:

Other 40G QSFP+ optical modules, such as QSFP+ SR4 / LR4, use eight channels for 40G transmission, but 40G QSFP+ BiDi SR4 only needs to use two 20G channels to achieve this function, each channel can transmit and receive signals from a multimode cable, but it is also important to note that 40G QSFP+ BiDi SR4 must be used in pairs.

two。 How does it work?

To achieve 40G QSFP+ BiDi SR4 signal transmission, three steps are required:

Step 1: combine four electrical signals with two 20g electrical signals

Step 2: exchange two 20g electrical signals into two 20g optical signals with different wavelengths

Step 3: transmit 20g optical signals of different wavelengths to an optical cable, and then 40G equipment receives the optical signal and works:

3.40G QSFP+ BiDi SR4 how to connect and use?

The commonly used wavelengths of 40G QSFP+ BiDi SR4 optical module are 850nm and 900nm, which can be transmitted stably in multimode fiber system. In addition, the transmission distance is 100m using OM3 jumper and 150m using OM4 jumper.

It becomes more convenient for data centers to use 40G QSFP+ BiDi SR4 without changing the previous 10G network system, providing a very common and easy solution for cost savings for network upgrades. Yi Tianguang Communication ETU-Link, as a professional optical module manufacturer, can provide 155m to 100G optical modules and support compatible Cisco / Juniper / HP / HUAWEI / H3C/ Extreme and so on. If you have any questions or interests, you can consult the etulink.com website.

Product recommendation: SFP-10G-T 10 Gigabit electric port module SFP-10G-LR

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