400G QSFP112 FR4 Optical Transceiver – 2km LC SMF

SVNK 400G QSFP112 FR4 Optical Transceiver (2 km, SMF)

The SVNK 400G QSFP112 FR4 optical transceiver is a high-performance, hot-pluggable module engineered to support 400 Gigabit Ethernet (400GbE) connectivity over single-mode fiber (SMF) with transmission distances of up to 2 kilometers. Designed for modern data centers, cloud infrastructure, and enterprise backbones, this transceiver enables reliable, high-speed optical interconnects optimized for next-generation network architectures.

Fully aligned with IEEE 802.3cu 400GBASE-FR4, the module uses four 100G PAM4 optical lanes multiplexed over CWDM wavelengths in the 1310 nm window, delivering an aggregate throughput of up to 425 Gb/s over a duplex LC fiber interface. This architecture allows high-capacity 400G transmission using only two single-mode fibers, simplifying cabling while maximizing fiber utilization.

The optical engine integrates high-performance EML-based CWDM transmitters and high-sensitivity receivers, along with advanced DSP and retiming, ensuring excellent signal integrity, low bit-error rates, and strong tolerance to chromatic dispersion and thermal variation across extended SMF links.

Housed in a compact QSFP112 Type-2A form factor, the module supports high port density, low power consumption (<8 W), and efficient thermal design, making it ideal for dense switching environments. Built-in Digital Optical Monitoring (DOM/DDM) and an I²C management interface allow real-time diagnostics and proactive network management.

Key Features

• Hot-pluggable QSFP112 Type-2A form factor
• Supports up to 425 Gb/s aggregate data rate
• Reach up to 2 km over single-mode fiber (SMF)
• 4 × 100G PAM4 CWDM optical lanes (FR4 architecture)
• High-performance EML-based CWDM transmitters
• 4 × 100G PAM4 retimed 400GAUI-4 electrical interface
• Duplex LC optical connector
• Power dissipation < 8 W
• Single 3.3 V power supply
• Commercial operating temperature: 0°C to 70°C
• Fully compliant with IEEE 802.3cu 400GBASE-FR4
• Integrated I²C management interface
• Built-in Digital Diagnostic Monitoring (DOM/DDM)
• RoHS compliant (lead-free)