A data center is a centralized facility that houses an organization’s IT infrastructure, including servers, storage systems, networking equipment, and other computing resources.
Optical modules are used within and between data centers to transmit and receive optical or electrical signals.
For the interior of the data center, in the common leaf-spine architecture of a data center, 50G/40G optical modules are often used as a bridge between access layer equipment and aggregation layer equipment, while 100G/200G optical modules are typically used from the aggregation layer to the core layer. The higher the level of the architecture, the greater the data transfer capacity.
For the interconnection of small data centers in medium and short distances, we can deploy 100G LR/ER modules or 400G-LR8 QSFP-DD modules. In long-distance and high-capacity transmission, connections between data centers typically utilize DCI equipment based on DWDM systems. This type of device provides OEO functionality and port aggregation capabilities, enabling multiple 10G/40G/100 GbE client ports to be mapped to DWDM wavelength coherent optical modules with capacities of 200G, 400G and even 800G. The coherent optical module’s key features include extremely high dispersion tolerance, eliminating the need for dispersion compensation within 2000 km, tunable wavelength bands, and seamless transmission over hundreds of kilometers with EDFA amplifiers, making it highly suitable for metropolitan area network applications.
