800G OSFP to 2×400G QSFP112 Active Optical Cable (AOC), Armored – 850nm OM3

The 800G OSFP to 2×400G QSFP112 Active Optical Cable (AOC) is a high-density breakout optical interconnect designed to connect one 800G OSFP112 interface with two independent 400G QSFP112 interfaces. Supporting 106.25Gbps PAM4 per lane and eight optical lanes in each direction, it provides a practical solution for 800G-to-2×400G Ethernet breakout applications in next-generation data centers and high-performance computing environments.

The AOC integrates 850nm VCSEL transmitter arrays and PIN photodetector arrays with OM3 multimode fiber to support transmission distances of up to 30 meters. Its armored construction provides additional mechanical protection for demanding installation environments, while integrated DSP, DDM/DOM monitoring, hot-pluggable interfaces, and a 3.3V power supply support reliable deployment in high-density network, AI, GPU, and HPC infrastructures.

• Supports 800G to 2×400G breakout connectivity
• OSFP112 to 2×QSFP112 configuration
• 106.25Gbps PAM4 data rate per lane
• 8×106.25Gbps PAM4 transmitter and receiver channels at the OSFP112 end
• 4×106.25Gbps PAM4 transmitter and receiver channels at each QSFP112 end
• Integrated 8-channel 850nm VCSEL transmitter and PIN photodetector arrays
• OM3 multimode fiber for short-reach optical transmission
• Maximum transmission distance up to 30m
• Armored cable construction for enhanced mechanical protection
• DSP-based signal processing
• DDM/DOM supported
• Hot-pluggable OSFP112 and QSFP112 interfaces
• Single 3.3V power supply

• 800G to 2×400G Ethernet breakout
• 800G data center switch-to-400G switch connectivity
• AI and GPU cluster interconnects
• High-performance computing (HPC)
• High-density Ethernet switching
• Data center spine-and-leaf architectures
• 800G network aggregation and breakout
• Short-reach connections between high-density networking equipment
• Applications requiring enhanced cable mechanical protection

OEM and ODM services are available for the 800G OSFP to 2×400G QSFP112 AOC to meet specific system integration and deployment requirements. Custom options can include cable length, armored cable construction, labeling, EEPROM configuration, cable identification, packaging, and other cable assembly specifications.

For high-volume or specialized deployments, the cable assembly can be adapted to customer-defined mechanical protection and cable-management requirements. Customized identification and programming can also be provided to support specific host platforms and network management systems.

How does the 800G-to-2×400G breakout configuration work?

The OSFP112 end provides a single 800G interface, while the two QSFP112 ends provide two independent 400G connections. This enables an 800G network port to connect directly with two separate 400G ports through one integrated optical cable assembly.

What is the difference between this cable and an 800G-to-4×200G AOC?

The main difference is the breakout architecture. This model divides one 800G connection into two 400G links, while the 4×200G version divides it into four 200G links. The appropriate option depends on the port speeds and breakout capabilities of the connected network equipment.

Why are eight 106.25Gbps PAM4 lanes used on the OSFP112 side?

The eight electrical/optical lanes provide the aggregate bandwidth required for the 800G interface. Each lane operates at 106.25Gbps using PAM4 signaling, allowing the high total data rate to be distributed across multiple high-speed lanes.

What is the benefit of the armored cable design?

The armored construction adds mechanical protection to the optical cable, making it more resistant to physical stress during installation and cable management. This can be beneficial in high-density environments where cables may experience tighter routing or increased handling.

Why is the QSFP112 end limited to 10W while the OSFP112 end is rated at 14W?

The OSFP112 end handles the complete 800G interface and therefore contains the corresponding optical and signal-processing functions. Each QSFP112 end handles a 400G connection, resulting in a different power requirement. These maximum values should be considered when planning the host equipment’s power and thermal budget.

What role does DSP play in the cable?

The integrated DSP performs high-speed signal processing to help compensate for signal impairments and maintain signal integrity across the 106.25Gbps PAM4 channels. This supports reliable operation at the high lane rates required for 800G connectivity.