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Views: 999 Author: Anna Publish Time: 2025-12-15 Origin: Site
YXFiber's YXF-QDD-400G-SR4 is a cost-effective, high-performance module optimized for data centers, supporting data rates of 4 × 53.125 G PAM4 optical interfaces and 8 × 26.5625G PAM4 electrical interfaces. Over OM4/OM5 multimode fiber, it can achieve transmission distances up to 100 meters. The module consists of two main parts: a transmitter and a receiver. The transmitter includes an 850nm VCSEL array and a driver. The receiver includes a transimpedance amplifier (TIA) and a PIN photodiode array. The high-speed electrical interface is based on low-voltage logic, has a nominal differential impedance of 100 ohms, and uses AC coupling. Users can access a series of registers in the transceiver via a two-wire serial interface to obtain monitoring and configuration data.
The QSFP-DD SR4 400G optical module can provide up to 400 Gbps of bandwidth, meeting the bandwidth requirements of data centers, cloud computing, artificial intelligence, and high-performance computing networks.
The 400G SR4 QSFP-DD interface allows for the placement of multiple ports within the same physical space, thereby increasing port density in the data center and significantly improving space utilization.
The QSFP-DD SR4 400G optical module conforms to industry standards and specifications, ensuring compatibility with other network devices. Mature technology also means high reliability and stability.
The QSFP-DD 400G SR4 module is a short-haul multimode fiber solution specifically designed for the BASE-SR4 400G Ethernet standard. It uses eight parallel fiber channels with a 50G PAM4 module and standard OM3/OM4 multimode fiber, achieving a transmission distance of 70-100 meters, fully meeting the connectivity needs within and between data center racks.
The 400G QSFP-DD SR4 optical transceiver performs exceptionally well in the switching and router markets. For example, next-generation platforms from Cisco, Arista, and Juniper support a wide range of QSFP-DD ports.
From the perspective of the overall data center network architecture, the application of QSFP-DD SR4 400G breaks down complex hierarchical network systems into simple, efficient, and transparent structures. It provides direct, high-bandwidth, low-latency connectivity, simplifies physical cabling, and reduces operational complexity. More importantly, it makes room for critical workloads such as AI clusters and high-performance computing, thereby reducing the damage to the Ethernet infrastructure.
