The Gigalight 100GE PSM4 2km QSFP28 optical transceiver (GQM-SPO101-IR4C) is designed for use in 100-Gigabit Ethernet links up to 2km on Single Mode Fiber (SMF). It is compliant with the QSFP28 MSA, PSM4 MSA, and portions of IEEE 802.3bm. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA. The transceiver is RoHS compliant. We also provide 100G QSFP28 PSM4 integrated with 3-meter MTP/MPO pigtail (GQM-101-MPO-003C).


  • Hot-pluggable QSFP28 form factor
  • 4 channels full-duplex transceiver module
  • Supports 103.125Gb/s aggregate bit rate
  • 4 channels 1310nm DFB transmitter
  • 4 channels PIN photo detector array
  • 3.5W maximum power dissipation
  • Maximum link length of 2km on SMF
  • Single MTP/MPO receptacle
  • Built-in digital diagnostic functions
  • Operating case temperature range: 0 to 70°C
  • Single 3.3V power supply
  • RoHS-6 compliant (lead free)


  • 100GE PSM4 applications with FEC
  • 25GE breakout applications

Ordering Information

Product Description Product Number
QSFP28 PSM4, 103.125Gb/s, 1310nm, 2km, SMF, MTP/MPO GQM-SPO101-IR4C
QSFP28 PSM4 with 3-Meter MTP/MPO Pigtail[1] GQM-101-MPO-003C

[1]: The pigtail length can be customized. For other length requirements, please contact us.