200G QSFP56 FR4 2km SMF Optical Transceiver

SKU WST-QS56-FR4-C Category Tags , , ,



  • IEEE802.3bs 200GBASE-FR4 compliant
  • QSFP56 MSA compliant
  • 4 CWDM lanes MUX/DEMUX design
  • Supports 212.5Gb/s aggregate bit rate
  • Up to 2km transmission on single modefiber (SMF) with FEC
  • 200GAUI-4 electrical interface
  • Maximum power consumption 6.5W
  • LC duplex connector
  • Operating case temperature: 10 to 60°C
  • RoHS compliant


  • Data Center Interconnect
  • 200G Ethernet
  • Enterprise networking



This product is a 200Gb/s transceiver module designed for 2km optical communication applications. The design is compliant to IEEE802.3bs 200GBASE-FR4 standard. The module converts 4 inputs channels (ch) of 50Gb/s (PAM4) electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 200Gb/s(PAM4) optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 200Gb/s(PAM4) input into 4 CWDM channels signals, and converts them to 4 channel output electrical data.

The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in ITU-T G.694.2. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. To minimize the optical dispersion in the long-haul system, single-mode fiber (SMF) has to be applied in this module. Host FEC is required to support up to 2km fiber transmission.

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP56 Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.

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