SLQS28-50G-ER is designed for 40km optical communication applications. The module incorporates one channel optical signal, on 1310nm center wavelength, operating at 26Gbaud data rate. The transmitter path incorporates an EML Driver and a cooled EML together. On the receiver path, the input optical signal is coupled to an APD detector. A DSP based gearbox is used to convert 2x26Gbps NRZ signals to 1x26Gbaud PAM4 signal. Also a 2-channel re-timer is integrated in this DSP.

The electrical interface is compliant with IEEE 802.3bm and QSFP28 MSA in the transmitting and receiving directions, and optical interface is duplex LC basis. The module has a maximum power consumption of 4.5W.

The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP28 Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference.