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  100GBase-ER4 QSFP28 Optical Transceiver Module
  Singlemode, LC, 40Km
  CLR-HGS-ER40 is a 100Gb/s transceiver module designed for optical communication applications compliant to QSFP MSA, 4WDM-40 MSA, 100GBASE-ER4 Lite, and OTU standards.

The module converts 4 input channels of 28Gb/s electrical data to 4 channels of LAN WDM optical signals and then multiplexes them into a single channel for 112Gb/s optical transmission. Reversely on the receiver side, the module de-multiplexes a 112Gb/s optical input into 4 channels of LAN WDM optical signals and then converts them to 4 output channels of electrical data.

The central wavelengths of the 4 LAN WDM channels are 1295.56, 1300.05, 1304.58 and 1309.14 nm as members of the LAN WDM wavelength grid defined in IEEE 802.3ba.

The high performance cooled LAN WDM DFB transmitters and high sensitivity APD receivers provide superior performance for 100Gigabit Ethernet applications up to 30km links without FEC and up to 40km links with FEC.

CLR-HGS-ER40 has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.
  - IEEE 802.3ba 100GBASE-ER4  
  - 100G 4WDM-40 interconnects          
  - OTN OTU4          
  - Client side 100G interconnects