The SFP+ BIDI transceiver is designed to transmit and receive optical data over SMF for link length 40km.The SFP+ BIDI module electrical interface is compliant to SFI electrical specifications. The transmitter input and receiver output impedance is 100 Ohms differential. Data lines are internally AC coupled. The module provides differential termination and reduce differential to common mode conversion for quality signal termination and low EMI.