400G OSFP SR8 Optical Transceiver – 850nm MPO MMF

SVNK 400G OSFP SR8 Optical Transceiver (MMF, up to 100 m)

The SVNK 400G OSFP SR8 Optical Transceiver is a high-performance short-reach module engineered to support 400 Gigabit Ethernet (400GbE) connectivity over multimode fiber (MMF). Designed for distances of up to 100 meters, this transceiver is optimized for next-generation data centers, cloud infrastructure, and high-performance computing environments requiring ultra-high-speed, low-latency interconnects.

Fully aligned with IEEE 802.3cd (400GBASE-SR8) specifications, the module converts high-speed electrical signals into eight parallel optical channels, each operating at 50 Gb/s PAM4. It integrates an advanced 850 nm VCSEL-based transmitter array and high-sensitivity receivers to deliver excellent signal integrity, low bit-error rates, and stable short-reach performance.

On the electrical side, the transceiver supports a 400GAUI-8 interface (8 × 50G PAM4) with integrated retiming for reliable ultra-high-speed operation. The optical interface uses a high-density MPO-16 connector, enabling efficient parallel-fiber connectivity and high port density.

Housed in a compact, hot-pluggable OSFP form factor, the module is optimized for power efficiency, thermal stability, and scalable deployment. Built-in Digital Optical Monitoring (DOM/DDM) via the I²C management interface enables real-time diagnostics and proactive network management.

Key Features

• Hot-pluggable OSFP form factor
• Supports 425 Gb/s aggregate data rate
• Maximum link length up to 100 m over MMF
• 8 × 50G PAM4 VCSEL-based transmitters (850 nm)
• Parallel SR8 multimode architecture
• 8 × 50G PAM4 retimed 400GAUI-8 electrical interface
• MPO-16 optical receptacle
• Power dissipation < 10 W
• Single 3.3 V power supply
• Commercial operating temperature: 0°C to 70°C
• Fully aligned with IEEE 802.3cd (400GBASE-SR8)
• Integrated I²C management interface
• Built-in Digital Diagnostic Monitoring (DOM/DDM)
• RoHS compliant (lead-free)