800G QSFP-DD 2×LR4 10km Optical Transceiver 1310nm PAM4 Dual CS SMF Module

• Supports 800Gbps Ethernet connectivity with 850Gbps aggregate bit rate
• Based on dual 400G LR4 optical architecture
• QSFP-DD Type 2A hot-pluggable form factor
• Supports up to 10km transmission over single-mode fiber
• Uses 1310nm CWDM wavelength technology
• Integrates eight 100G PAM4 EML optical transmitters
• Uses high-sensitivity PIN photodiode receivers
• Supports 8×100G PAM4 retimed 800GAUI-8 electrical interface
• Dual CS optical receptacles for high-density fiber deployment
• Supports PAM4 modulation for high-bandwidth optical transmission
• Optimized for low power operation with ≤16W consumption
• Supports advanced optical monitoring and management
• Compatible with next-generation 800G Ethernet platforms
• Designed for high-density switch and router environments
• Supports OEM and ODM customization services

• 800G Ethernet data center networks
• Data Center Interconnect (DCI)
• Hyperscale cloud infrastructure
• AI and machine learning clusters
• High-performance computing (HPC)
• Enterprise backbone networks
• Cloud service provider networks
• Next-generation optical transport systems
• High-capacity switch-to-switch interconnects

FiberMania provides OEM and ODM customization services for 800G QSFP-DD optical transceiver modules to support the requirements of network equipment manufacturers, cloud providers, and system integrators.

What is the difference between 800G QSFP-DD 2×LR4 and 800G QSFP-DD LR8 modules?

The 800G QSFP-DD 2×LR4 module combines two independent 400G LR4 links inside a single transceiver, providing dual 400G connectivity through dual CS interfaces. LR8 modules typically use eight optical wavelengths in a single 800G link architecture, resulting in different optical designs and cabling requirements.

Why does the 800G QSFP-DD 2×LR4 use CS connectors?

CS connectors provide high-density optical connectivity with a smaller footprint than traditional duplex LC interfaces. Dual CS receptacles allow two independent 400G optical links to be integrated into a single QSFP-DD module, improving port density and cable management efficiency.

What fiber type is required for this 800G optical transceiver?

This module is designed for single-mode fiber (SMF) infrastructure, typically G.652 fiber. The SMF design enables reliable transmission up to 10km, making it suitable for data center interconnect and metro-level networking applications.

What are the benefits of using PAM4 EML technology in this module?

PAM4 modulation increases data transmission efficiency by carrying multiple bits per symbol, while EML transmitters provide excellent optical output stability and high-speed performance. Together, they enable reliable 800G transmission over extended distances.

Is this module suitable for AI networking applications?

Yes. The high bandwidth, low power consumption, and compact QSFP-DD design make this module suitable for AI clusters, GPU networking, and large-scale data centers requiring high-capacity optical interconnects.