In the 40G network transmission application, the 40G QSFP+ optical module occupies an important position. According to different needs, it is applied in different transmission scenarios.

QSFP+ optical module introduction:

QSFP+ optical module, namely 40G optical module, is a compact hot plug optical module for data communication applications. It has four independent optical signal transmission and reception channels, mainly used for high-speed data transmission of switches, routers and data center equipment.

40G QSFP+ optical module type:

According to different transmission protocols, 40G QSFP+ optical modules can be divided into: 40GBASE-SR4, 40GBASE-ESR4, 40GBASE-IR4, 40GBASE-LR4, 40GBASE-LX4, 40GBASE-Lite ER4, 40GBASE-ER4 and 40GBASE-SR4-BIDI etc.

1. QSFP-SR4-40G optical module

QSFP-SR4-40G optical module has a working wavelength of 850nm, and uses MPO connector. When it is used with OM3 multimode patch cord, the transmission distance is 100m, when it is used with OM4 multimode fiber jumper, the transmission distance is 150m.

2. QSFP-LR4-40G optical module

QSFP-LR4-40G optical module has a wavelength of 1310nm. It uses LC duplex connector, which is usually used together with single-mode fiber. The maximum transmission distance is 10km.

3. QSFP-ER4-40G optical module

QSFP-ER4-40G optical module is a kind of optical module with working wavelengths of 1271, 1291, 1311 and 1331nm. It adopts LC duplex connector and is used together with common single-mode optical fiber. The maximum transmission distance is 40km.

Connect with switch:

The port number and port type of different switches are different. 10G switch generally means that 10G port number accounts for a large proportion, which is mainly used to transmit 10G rate, 40G switch is mainly 40G port, and 40G QSFP+ optical module is the best choice.

Application:

ETU-Link can provide the above-mentioned 40G QSFP+ optical module product series, which helps users to set up a more convenient and flexible data center access network.