Metropolitan area network is a computer communication network established within a city, referred to as MAN. It is a broadband local area network. Due to the local area network technology with active switching elements, the transmission delay in the network is small, and its transmission medium mainly uses optical cables, and the transmission rate is above 100Gbit/s.

An important use of MAN is for the backbone network, which connects hosts, databases, and LANs in different locations in the same city. With the rapid development of industry informatization, the demand for long-distance, large-capacity bandwidth has increased rapidly, leading to rapid growth in traffic at the access layer, metropolitan area, and backbone networks. Optical modules also need to be continuously upgraded to be suitable for more advanced network environments. So what are the optical modules suitable for metropolitan area networks?

Following ETU-LINK lists some 10G SFP+ optical modules that can be used in metropolitan area networks.

10G SFP+ long distance optical module

The above are some 10G optical modules of metropolitan area network listed by Yitian Optical Communication. Metro optical modules include 100G optical modules, 40G optical modules, 25G optical modules and 10G optical modules. Generally, the transmission range of the metropolitan area network is from several kilometers to tens of thousands of meters, and most of them use long-distance optical modules.