• Name: 100GBASE-LR4 Lite 4km QSFP28 Optical Transceiver
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The Gigalight 100GBASE-LR4 Lite 4km QSFP28 optical transceiver (GQS-SPO101-LS4C) is designed for use in 100-Gigabit Ethernet links up to 4km on Single Mode Fiber (SMF). It is compliant with the QSFP28 MSA, IEEE 802.3ba 100GBASE-LR4, and IEEE 802.3bm CAUI-4. Digital diagnostics functions are available via the I2C interface, as specified by the QSFP28 MSA. The optical transceiver is RoHS compliant.


  • Hot-pluggable QSFP28 form factor
  • Supports 103.125Gb/s aggregate bit rate
  • 4 channels DFB-based LAN-WDM cooling transmitter
  • 4 channels PIN ROSA
  • Internal CDR circuits on both receiver and transmitter channels
  • 3.5W maximum power dissipation
  • Maximum link length of 4km on SMF
  • Duplex LC receptacles
  • Built-in digital diagnostic functions
  • Operating case temperature range: 0 to 70°C
  • Single 3.3V power supply
  • RoHS 6 compliant (lead free)


  • 100GBASE-LR4 Lite 100G Ethernet

Ordering Information

Product Description Product Number
QSFP28 LR4 Lite, 103.125Gb/s, 1310nm, 4km, SMF, LC, Commercial GQS-SPO101-LS4C