128GFC QSFP28 LR4 LWDM4 10km/20km Optical Transceiver

GIGALIGHT’s 128GFC QSFP28 LR4 optical transceiver modules with 4-channel 25G NRZ modulation technology are widely used in 100GBASE-LR4 Ethernet, OTN OTU4 and 128GFC links, with transmission distances of up to 10km to 20km over single-mode fiber.


  • Hot-pluggable, full-duplex transceiver module packaged in QSFP28 form factor
  • 4-channel full-duplex transceiver module
  • 4-channel cooled LAN-WDM DFB laser and PIN ROSA
  • Maximum speed up to 111.8Gbps
  • Built-in CDR circuitry for receive and transmit channels
  • Compliant with QSFP28 MSA, IEEE 802.3ba 100GBASE-LR4 Ethernet and OTN OTU4 standards
  • Transmission distance up to 10km or 20km over single-mode fiber optics
  • Maximum power consumption less than 4.5W
  • Dual LC optical ports
  • Operating temperature range from 0 to 70 degrees Celsius
  • Supply voltage 3.3V
  • RoHS compliant (lead-free)
P/N Description
GQS-SPO111-LR4C 100GE/OTN/128GFC QSFP28 LR4,LWDM4,10km,SMF,Dual LC, Optical Module
GQS-SPO111-LR2C 100GE/OTN/128GFC QSFP28 LR4,LWDM4,20km,SMF,Dual LC, Optical Module

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