400G QSFP-DD DR4 Optical Transceiver – 500m MPO SMF

SVNK 400G QSFP-DD DR4 Optical Transceiver (500 m, SMF)

The SVNK 400G QSFP-DD DR4 Optical Transceiver is a high-performance, hot-pluggable module engineered for 400 Gigabit Ethernet (400GbE) short-reach interconnects inside modern data centers. Built using advanced silicon photonics integration technology, this transceiver is optimized for high-density, high-efficiency 400G switch and server platforms.

Fully aligned with IEEE 802.3bs 400GBASE-DR4, the module utilizes 4-lane single-mode parallel optics, with each lane operating at 100 Gb/s PAM4, enabling reliable transmission up to 500 meters over single-mode fiber (SMF). On the electrical side, it supports a 400GAUI-8 interface (8 × 50G PAM4) with integrated retiming to ensure excellent signal integrity and system margin.

The optical engine integrates high-performance 1310 nm EML-based transmitters and high-sensitivity receivers, delivering low bit-error rates, strong dispersion tolerance, and stable performance across operating temperatures. The MPO-12 optical interface enables compact parallel-fiber connectivity, ideal for large-scale data center cabling architectures.

Housed in a compact QSFP-DD Type-2 form factor, the module supports hot-plug operation, low power consumption, and high port density, making it ideal for next-generation leaf-spine, AI, and cloud infrastructures. Built-in Digital Optical Monitoring (DOM) via an I²C interface enables real-time diagnostics and proactive network management.

Key Features

• Hot-pluggable QSFP-DD Type-2 form factor
• Supports up to 425 Gb/s aggregate data rate
• Maximum reach up to 500 m over single-mode fiber (SMF)
• 4 × 100G PAM4 parallel optical lanes
• 1310 nm EML-based transmitters
• 8 × 50G PAM4 retimed 400GAUI-8 electrical interface
• MPO-12 optical receptacle
• Power dissipation < 12 W
• Single 3.3 V power supply
• Commercial operating temperature: 0°C to 70°C
• Fully aligned with IEEE 802.3bs 400GBASE-DR4
• Integrated I²C management interface
• Built-in Digital Diagnostic Monitoring (DOM/DDM)
• RoHS compliant (lead-free)