40G network has been widely used in data center, and optical module is one of the essential components of data center equipment interconnection. Next ETU-LINK will introduce the types of 40G QSFP+ optical modules to you.

40GBASE-SR4 optical module: It uses MPO connector with working wavelength of 850nm. The transmission distance can reach 100m when used with OM3 multimode fiber; and can reach 150m when used with OM4 multimode fiber, which is mainly used to realize the short distance connection between network equipment in the data center.

The 40G QSFP+ SR4 optical module can connect two 40G network devices with MPO optical fiber patch cord, and can also be used with MPO-LC optical fiber branch patch cord to realize the connection between 40G and 10G network equipment.

40GBASE-eSR4 optical module: It adopts MPO connector with working wavelength of 850nm. The transmission distance can reach 300m when used with OM3 multimode fiber; and can reach 400m when used with OM4 multimode fiber, which is mainly used to realize the short distance connection between network equipment in data center.

40GBASE-PSM4 optical module: It uses MPO connector, the working wavelength is 1310nm, when used with single-mode optical fiber OS2, the transmission distance can reach up to 2/10KM.

40GBASE-LR4 optical module: It adopts QSFP+ package form, and the working wavelength is 1271/1291/1311/1331nm. When used with single-mode optical fiber OS2, the transmission distance can reach up to 10KM. It is mainly used to realize the long-distance connection between network equipment in data center.

40GBASE-ER4 optical module: It adopts QSFP+ package form, and the working wavelength is 1271/1291/1311/1331nm. When used with single-mode optical fiber OS2, the transmission distance can reach up to 40km. It is mainly used to realize the medium distance connection between network equipment in data center.

40GBASE-BIDI Single bidirectional optical module: It adopts QSFP+ package form and uses duplex LC connector. The working wavelength is 850/900nm. When used with OM3 multimode fiber, the transmission distance can reach 100m; when used with OM4 multimode fiber, the transmission distance can reach 150m.

The above are the six types of 40G optical modules commonly used in 40G data center. As a professional optical module manufacturer, ETU-LINK can provide the above optical modules. At present, most of the data centers have been upgraded to 40G/100G, which is ready to meet the requirements of higher propagation rate and larger transmission capacity in the future.