100G QSFP28 ER4 EML LWDM4 40km Optical Transceiver

GIGALIGHT 100G QSFP28 ER4 optical transceiver module is used for long-distance transmission in the field of data communication or telecom, which is compliant with 100G Ethernet transmission protocol and compatible with OTN OTU4 transmission protocol. It has a built-in pair of 4-channel LWDM MUX and DEMUX with center wavelengths of 1295.56nm, 1300.05nm, 1304.58nm and 1309.14nm, respectively, and uses a pair of single-mode fibers for transmission over distances up to 30km (without FEC) or 40km (with FEC).


  • Hot-pluggable, full-duplex transceiver module packaged in QSFP28 form factor
  • 4 channels LAN-WDM EML uncooled transmitter and APD ROSA
  • Transmission rates of up to 27.95Gbps per channel
  • Compliant with QSFP28 MSA, and 100GE Ethernet transport protocol
  • Optional multi-rate versions compatible with 100G Ethernet and OTN OTU4
  • Backward compatible with IEEE 802.3ba 100GBASE-ER4 and InfiniBand FDR transport protocols
  • Distance up to 40km (without FEC on) using 1 pair of single-mode fibers
  • Power consumption less than 6w
  • Dual LC optical connectors
  • Commercial operating temperature range
  • Supply voltage 3.3V
  • RoHS compliant (lead-free)
P/N Description
GQS-SPO101-ER4C 100GE QSFP28 ER4 EML LWDM4 40km Optical Module
GQS-SPO111-ER4C 100GE/OTU4 QSFP28 ER4 EML LWDM4 40km Optical Module

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