The Gigalight GQS-SPO101-CIR4C is a QSFP28 transceiver module designed for use in 100GE CWDM4 links with FEC up to 2km on SMF. It is compliant with the QSFP MSA, CWDM4 MSA and relevant portions of IEEE 802.3bm. Digital diagnostics functions are available via an I2C interface, as specified by the QSFP MSA. The transceiver is RoHS compliant.


  • Hot-pluggable QSFP28 form factor
  • 4 channels full-duplex transceiver module
  • Supports 103.125Gb/s aggregate bit rate
  • 4 channels DFB-based CWDM uncooled transmitter
  • 4 channels PIN ROSA
  • Internal CDR circuits on both receiver and transmitter channels
  • 3.5W maximum power dissipation
  • Maximum link length of 2km 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)


  • 100GE CWDM4 with FEC
  • InfiniBand DDR/EDR

Ordering Information

Product Description Product Number
QSFP28, 100GE CWDM4, 103.125Gb/s, 1310nm, 2km, SMF, Duplex LC GQS-SPO101-CIR4C

download attachments : GQS-SPO101-CIR4C 【Preview】