400G OSFP SR4 Optical Transceiver – 850nm MPO MMF

SVNK 400G OSFP SR4 Optical Transceiver (MMF, up to 100 m)

The SVNK 400G OSFP SR4 Optical Transceiver is a high-performance short-reach module engineered for 400 Gigabit Ethernet (400GbE) connectivity over multimode fiber (MMF). Designed to support distances of up to 100 meters over OM4 fiber, this transceiver is optimized for high-density data centers, cloud infrastructure, and high-performance computing environments requiring ultra-high-speed, low-latency interconnects.

Fully aligned with IEEE 802.3db 400GBASE-SR4 specifications, the module converts high-speed electrical signals into four parallel optical channels, each operating at 100 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 performance in short-reach optical links.

On the electrical side, the transceiver supports a 400GAUI-4 interface (4 × 100G PAM4) with integrated retiming for reliable high-speed operation. The optical interface uses a high-density MPO-12 connector, enabling efficient parallel-fiber connectivity and high port density.

Housed in a compact, hot-pluggable OSFP Type-2 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 Type-2 form factor
• Supports 425 Gb/s aggregate data rate
• Maximum link length up to 100 m over OM4 MMF
• 4 × 100G PAM4 VCSEL-based transmitters (850 nm)
• Parallel SR4 multimode architecture
• 4 × 100G PAM4 retimed 400GAUI-4 electrical interface
• MPO-12 optical receptacle
• Power dissipation < 10 W
• Single 3.3 V power supply
• Commercial operating temperature: 0°C to 70°C
• Fully aligned with IEEE 802.3db 400GBASE-SR4
• Integrated I²C management interface
• Built-in Digital Diagnostic Monitoring (DOM/DDM)
• RoHS compliant (lead-free)