40Gb/s QSFP+ 2km Transceiver

Product Description

QSFP-40G-ITU-2K-D is designed to operate over single-mode fibre system using 4X10 CWDM channel in 1310 band and links up to 2km. The module converts 4 inputs channel of 10Gb/s electrical data to 4 CWDM optical signals, and multiplexes them into a single channel for 40Gb/s optical transmission. Reversely, on the receiver side, the module optically de-multiplexes a 40Gb/s input into 4 CWDM channels signals, and converts them to 4 channel output electrical data. 

The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm. It contains a duplex LC connector for the optical interface and a 38-pin connector for the electrical interface. Single-mode fibre (SMF) is applied in this module. This product converts the 4-channel 10Gb/s electrical input data into CWDM optical signals (light), by a 4-wavelength Distributed Feedback Laser (DFB) array. The 4 wavelengths are multiplexed into a single 40Gb/s data, propagating out of the transmitter module via the SMF. The receiver module accepts the 40Gb/s optical signals input, and de-multiplexes it into 4 CWDM 10Gb/s channels. Each wavelength light is collected by a discrete photo diode, and then outputted as electric data after amplified by a TIA. 

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA) and compliant to IEEE 802.3ba. 

Product Features

  • 4 CWDM lanes Mux/Demux design 
  • Up to 11.1Gbps Data rate per wavelength 
  • Up to 2km transmission on SMF 
  • Electrically hot-pluggable 
  • Digital Diagnostics Monitoring Interface 
  • Compliant with QSFP+ MSA with LC connector 
  • Case operating temperature range:0°C to 70°C 
  • Power dissipation < 3.5 W 


  • 40G Ethernet 
  • Data Centre and LAN 


  • Compliant to IEEE 802.3ba 
  • Compliant to SFF-8436 
  • RoHS Compliant