To facilitate seamless data exchange between servers, switches, and their counterparts, a combination of optical modules (direct-connect copper cables, active optical cables), optical fiber patch cords, and other transmission media are employed. In 2021, about 70% of data center east-west traffic will remain within the data center, and the growth rate is. Typical application scenarios of 5G front-haul include optical fiber direct connection, passive WDM, and active WDM/optical transport network (OTN)/slice packet network (SPN). Optical fiber direct connection scenarios generally use 25Gb/s gray light modules, which support dual-fiber bidirectional. 400G optical modules are utilized in 5G front-haul and back-haul networks to support high-density data transmission and low-latency requirements, particularly in core and metro networks. Scientific research, financial modeling, and genomic computing demand high-throughput, low-latency environments. Huawei offers a comprehensive portfolio of pluggable StarryLink optical modules for data center networks, with various models providing flexible plug-and-play solutions tailored to diverse interface requirements. As the rapid increase in internet traffic and the connectivity demand in almost every sector around us has compelled the need for faster and faster data transfer speeds, the introduction of a 400G optical solution has come as a game-changer. With the increasing market demand for.