25G Ethernet is formulated in accordance with the IEEE 802.3by protocol. The current 10G Ethernet speed standard cannot meet the high-speed growth of network traffic in large and medium-sized enterprises. The 100G speed standard is too high and somewhat wasteful. Therefore, the emergence of the 25G Ethernet standard just makes up for it. The shortcomings of both. Especially for data centers and mobile backhaul networks, 25G transceivers have unparalleled advantages. As the industry chain continues to improve, its application scenarios will become wider and wider.