400G QSFP112 SR4 100m Optical Transceiver 850nm PAM4 MPO-12 APC MMF Module

• Supports 400Gbps high-speed Ethernet optical transmission
• Designed for 400GBASE-SR4 short-reach applications
• Supports up to 100m transmission over OM4/OM5 multimode fiber
• Uses 850nm VCSEL laser technology for efficient short-distance communication
• Four-channel parallel optical transmission architecture
• Supports 4 × 106.25Gb/s PAM4 electrical interface
• QSFP112 high-density hot-pluggable form factor
• MPO-12 APC connector for reliable parallel fiber connectivity
• Supports PAM4 modulation technology for higher bandwidth efficiency
• Integrated Digital Diagnostic Monitoring (DDM)

• 400GBASE-SR4 Ethernet networks
• Cloud data center interconnects
• AI and machine learning clusters
• High-performance computing (HPC) systems
• Server-to-switch optical connections
• Data center spine-leaf architectures
• Enterprise network backbones
• Short-reach optical switching applications

FiberMania provides OEM and customized QSFP112 optical transceiver solutions for data center operators, cloud service providers, and networking equipment manufacturers. Customization services include firmware configuration, EEPROM programming, DDM parameter customization, product labeling, packaging solutions, and host platform compatibility optimization.

For large-scale 400G deployments, we support customized requirements including optical performance testing, power consumption optimization, thermal validation, operating temperature selection, and interoperability testing with different Ethernet switches and networking platforms.

What fiber type is required for the 400G QSFP112 SR4 module?

The QSFP112 SR4 transceiver is designed for multimode fiber (MMF), supporting OM4 and OM5 fiber cabling. OM4 or higher-grade multimode fiber is recommended to achieve optimal performance and the maximum 100-meter transmission distance.

What is the difference between QSFP112 SR4 and DR4 optical modules?

The main difference is the fiber type and transmission distance. SR4 uses 850nm VCSEL technology over multimode fiber for short-distance links up to 100m, while DR4 uses 1310nm optical technology over single-mode fiber for longer transmission distances up to approximately 500m.

Why does the module use an MPO-12 APC connector?

The MPO-12 APC connector provides a compact multi-fiber interface for four-channel parallel optical transmission. The APC end face design helps reduce optical reflection and improves signal stability in high-performance optical networks.

What are the advantages of VCSEL technology in 400G SR4 applications?

850nm VCSEL technology offers excellent efficiency, low power consumption, and cost advantages for short-distance multimode fiber transmission. It is widely used in data centers where high-density, low-latency optical connectivity is required.

Does the QSFP112 SR4 support digital diagnostics?

Yes. The module integrates Digital Diagnostic Monitoring (DDM), allowing compatible network equipment to monitor key operating parameters such as temperature, voltage, and optical power levels.