The data center communication Optical module can be divided into three categories according to the connection type:

(1) From the data center to the user, it is generated by terminal user behavior such as browsing web pages, sending and receiving emails, and video streaming when accessing the cloud;

(2) Data center interconnection, mainly used for data replication, software and system upgrades;

(3) Within the data center, it is mainly used for information storage, generation, and mining (according to Cisco's calculation, communication within the data center accounts for over 70% of data center communication)