400G OSFP SR4 100m Optical Transceiver 850nm PAM4 MPO-12 MMF Module

The 400G OSFP SR4 Optical Transceiver Module is a high-performance short-reach optical solution designed for 400Gbps Ethernet, AI networking, and high-density data center applications. Based on the 400GBASE-SR4 architecture, the module utilizes four 100G PAM4 optical lanes with 850nm VCSEL transmitter arrays and PIN photodetector arrays to deliver reliable high-speed transmission over OM3 or OM4 multimode fiber. With an MPO-12 optical interface, it enables efficient parallel fiber connectivity for next-generation network infrastructures.

Built in the OSFP hot-pluggable form factor, this transceiver supports high bandwidth density and advanced thermal management for modern data center switching platforms. It features a 400GAUI-4 electrical interface with integrated retiming, CMIS 5.2 management support, and power consumption below 8W, providing an energy-efficient solution for cloud computing, AI clusters, high-performance computing, and InfiniBand networking environments.

• Supports 400Gbps Ethernet transmission for short-reach data center applications
• Compliant with 400GBASE-SR4 Ethernet architecture
• Uses four-channel 850nm VCSEL optical technology
• Supports 4 × 100G PAM4 optical lanes for aggregate 400G bandwidth
• Transmission distance up to 100m over OM4 multimode fiber
• Supports OM3 and OM4 multimode fiber cabling
• OSFP hot-pluggable form factor for high-density networking equipment
• MPO-12 optical connector for parallel multi-fiber transmission
• 400GAUI-4 electrical interface with retimed 100G PAM4 lanes
• Integrated PIN photodetector receiver array

• 400GBASE-SR4 Ethernet networks
• AI cluster and GPU interconnect networks
• High-performance computing (HPC) environments
• Cloud data center switching
• Data center spine-leaf architectures
• High-density switch-to-switch interconnects
• InfiniBand networking applications
• Short-reach rack-to-rack optical connections

FiberMania provides OEM and customized OSFP optical transceiver solutions for data centers, cloud service providers, and network equipment manufacturers. Customization options include firmware configuration, CMIS parameter programming, EEPROM customization, product labeling, packaging design, and compatibility optimization for different networking platforms.

What fiber type is required for the 400G OSFP SR4 transceiver?

The module is designed for multimode fiber (MMF), supporting OM3 and OM4 fiber cabling. OM4 fiber is recommended when achieving the maximum 100-meter transmission distance is required for 400G applications.

What is the difference between 400G OSFP SR4 and LR4 modules?

The main difference is transmission distance and fiber technology. SR4 uses 850nm VCSEL technology with multimode fiber for short-distance links up to 100m, while LR4 uses CWDM wavelengths and single-mode fiber to support longer-distance transmission, typically up to 10km.

Why does the 400G OSFP SR4 use MPO-12 connectors?

The MPO-12 connector provides a compact parallel fiber interface for four-channel optical transmission. It allows high-density fiber connections while reducing cabling complexity in large-scale data center deployments.

Can this module be used for AI and HPC networks?

Yes. The high bandwidth, low latency, and low power characteristics of the OSFP SR4 make it suitable for AI clusters, GPU computing systems, and HPC environments that require large-scale high-speed interconnects.

Does this transceiver support CMIS management?

Yes. The module supports CMIS 5.2 management, enabling digital monitoring and configuration functions through compatible host equipment.