400G QSFP112 LR4 10km Optical Transceiver CWDM PAM4 Duplex LC SMF Module

• Supports 400Gbps Ethernet optical transmission
• Designed for 400GBASE-LR4 long-reach applications
• Supports transmission distances up to 10km over single-mode fiber
• Uses four CWDM optical wavelengths for efficient fiber utilization
• Supports PAM4 modulation technology for high-speed transmission
• Integrates CWDM EML transmitters for stable optical performance
• Uses PIN receivers for high-sensitivity signal detection
• QSFP112 high-density pluggable form factor
• Duplex LC optical connector for standard SMF deployment
• Supports 400GAUI-8 electrical interface with 8 × 53.125Gb/s PAM4 lanes
• Supports FEC for improved link reliability
• Integrated Digital Diagnostic Monitoring (DDM)

• 400GBASE-LR4 Ethernet networks
• Hyperscale cloud data centers
• Data Center Interconnect (DCI)
• AI and machine learning infrastructure
• Enterprise backbone networks
• High-capacity switch and router interconnections
• Long-distance data center optical links
• High-performance computing (HPC) networks
• InfiniBand and advanced networking environments

FiberMania provides OEM and customized QSFP112 optical transceiver solutions for data centers, cloud service providers, telecom operators, and network equipment manufacturers. Customization options include firmware configuration, EEPROM programming, wavelength configuration, product labeling, packaging customization, and host equipment compatibility optimization.

For large-scale 400G deployments, we support customized requirements including optical performance testing, FEC configuration validation, thermal optimization, power efficiency improvement, temperature grade selection, and interoperability testing with different switching and routing platforms.

What is the difference between 400G QSFP112 LR4 and FR4 modules?

The main difference is transmission distance and optical performance requirements. QSFP112 FR4 is designed for shorter links up to around 2km using CWDM technology, while LR4 extends the transmission distance to approximately 10km by using enhanced optical components and long-reach designs.

What fiber type is required for the 400G QSFP112 LR4 module?

This transceiver requires single-mode fiber (SMF), typically G.652 fiber. The Duplex LC interface allows direct connection to commonly deployed single-mode fiber cabling in data centers and enterprise networks.

Why does the LR4 module use CWDM wavelengths?

CWDM wavelength multiplexing allows four optical channels to be transmitted through a single fiber pair, reducing fiber requirements while enabling high-capacity 400G transmission over longer distances.

What role does FEC play in this 400G optical module?

Forward Error Correction (FEC) improves transmission reliability by detecting and correcting certain signal errors during communication. It helps maintain stable operation for high-speed optical links, especially in longer-distance deployments.

What is the advantage of the QSFP112 form factor for 400G networks?

QSFP112 is designed specifically for high-speed Ethernet applications requiring higher electrical bandwidth. It provides improved port density and efficient thermal management, making it suitable for next-generation 400G switches and networking equipment.