• Name: 100GBASE-ER4 Lite & OTU4 40km QSFP28 Optical Transceiver
  • NO.: 020100
  • Views : 111


The Gigalight 100GBASE-ER4 Lite & OTU4 40km QSFP28 optical transceiver (GQS-SPO111-ES4C) is designed for use in 100-Gigabit Ethernet and OTN links up to 30km without FEC or 40km with FEC on Single Mode Fiber (SMF). It is compliant with the QSFP28 MSA, 4WDM-40 MSA, IEEE 802.3ba 100GBASE-ER4 and IEEE 802.3bm CAUI-4, and OTU4 standards. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP28 MSA. The optical transceiver is RoHS compliant.


  • Hot-pluggable QSFP28 form factor
  • 4 channels full-duplex transceiver module
  • Supports 111.8Gb/s aggregate bit rate
  • 4 channels DFB-based LAN-WDM cooling transmitter
  • 4 channels APD ROSA
  • 4.2W maximum power dissipation
  • Maximum link length of 30km on SMF without FEC
  • Maximum link length of 40km on SMF with FEC
  • 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-ER4 100G Ethernet
  • 100GE 4WDM-40 applications
  • OTN OTU4 applications

Ordering Information

Product Description Product Number
QSFP28 ER4 Lite, 111.8Gb/s, 1310nm, 40km with FEC, SMF, LC GQS-SPO111-ES4C

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