100GBASE-ER4 QSFP28 1310nm 40km Optical Transceiver


Form Factor: QSFP28.
Wavelength: 1310nm.
Digital Diagnostics Functions: Support.


FOS 100GBASE-ER4 QSFP28 optical transceiver module is a high-performance module for 100G Ethernet data links featured with WDM function. The maximum transmission distance up to 40km over SMF. The four receivers are APD detecting 4x 25Gbps optical input signals. This transceiver module fully complies with the QSFP28 MSA (Multisource Agreement).


  • Hot-pluggable QSFP28 form factor
  • Transmitter: cooled 4x25Gb/s LAN WDM TOSA (1295.56, 1300.05,1304.58, 1309.14nm
  • Receiver: 4x28Gb/s APD ROSA
  • Up to 40km over SMF (single mode fiber)
  • Supports 103.1Gb/s aggregate bit rate
  • Single 3.3V power supply
  • 4W maximum power dissipation
  • RoHS-6 compliant
  • Commercial case temperature range of 0°C to 70°C
  • Built-in digital diagnostic function


  • 100GBASE-ER4 Ethernet Links
  • Infiniband QDR and DDR interconnects


Compatible FOS (Generic Code) Form Type QSFP28
Wavelength 1310nm Data Rate (Max) 103.1 Gbp
Media Type Duplex SM Distance 40km
Protocols 100G Ethernet Interface Duplex LC
Case Temperature 0 to 70°C (32 to 158°F) Digital Diagnostics Functions Support

Note: Full transmission distance of 40km required the use of FEC on the host platform. Without FEC, the transmission distance is 30km

Compatible Brands

FOS (Generic)

Form Factor


Data Rate



25km – 40km

Media Type

Duplex SMF


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