400G QSFP112 FR4 2km Optical Transceiver CWDM PAM4 Duplex LC SMF Module

• Supports 400Gbps Ethernet optical transmission
• Designed for 400GBASE-FR4 applications
• Supports transmission distances up to 2km over single-mode fiber
• Uses four CWDM optical wavelengths for efficient fiber utilization
• Integrates four high-performance EML transmitters and PIN receivers
• Supports 4 × 100G PAM4 retimed 400GAUI-4 electrical interface
• QSFP112 Type 2A compact hot-pluggable form factor
• Duplex LC optical connector for easy SMF deployment
• PAM4 modulation technology for high-speed optical communication
• Low power consumption with maximum power dissipation of ≤8W
• Supports high-density 400G Ethernet switching applications

• 400GBASE-FR4 Ethernet networks
• Hyperscale cloud data centers
• Data center interconnects (DCI)
• AI and high-performance computing networks
• Enterprise backbone connectivity
• Switch-to-switch optical links
• High-bandwidth server aggregation networks
• Next-generation Ethernet infrastructure

FiberMania provides OEM and customized QSFP112 optical transceiver solutions for cloud providers, data center operators, and network equipment manufacturers. Customization services include firmware configuration, EEPROM programming, product labeling, packaging customization, equipment compatibility testing, and optical performance optimization.

For large-scale 400G network deployments, we support application-specific requirements including wavelength configuration, thermal performance validation, power optimization, temperature grade selection, and interoperability testing with different Ethernet switching platforms.

What is the difference between 400G QSFP112 FR4 and DR4 modules?

The main difference is the optical transmission method and connector interface. DR4 uses four parallel 1310nm optical lanes with an MPO-12 connector for up to 500m transmission, while FR4 uses four CWDM wavelengths combined through wavelength multiplexing with a Duplex LC interface to achieve longer transmission distances up to 2km.

What fiber type is required for the 400G QSFP112 FR4 module?

This transceiver is designed for single-mode fiber (SMF), typically G.652 fiber. The Duplex LC interface allows direct integration with existing single-mode fiber cabling systems widely deployed in data centers and enterprise networks.

Why does the FR4 module use CWDM technology?

CWDM technology allows multiple optical wavelengths to be transmitted over a single fiber pair, reducing fiber requirements while enabling longer-distance transmission. This makes FR4 modules suitable for scalable 400G Ethernet deployments where fiber efficiency is important.

What are the advantages of QSFP112 Type 2A?

QSFP112 Type 2A provides a compact high-speed pluggable interface designed for 400G networking applications. It supports high electrical bandwidth density while improving thermal efficiency and power management compared with previous-generation form factors.

Does this module support digital monitoring?

Yes. The QSFP112 FR4 module supports management and monitoring functions through its host interface, allowing compatible equipment to monitor operating parameters such as temperature, voltage, and optical performance.