Patent ID: 8331804

Claim:
An apparatus comprising: an optical-to-electrical converter to receive an optical signal and to generate an electrical signal; an amplifier to receive the electrical signal and to generate an output signal based on a reference signal; a feedback mechanism to be enabled during a training phase and to generate a control signal according to the output signal, wherein the feedback mechanism is operable to be disabled after the training phase is complete, and wherein the control signal is an up-down signal generated from the output signal; a logic to disable the feedback mechanism after completing the training phase; and a counter logic having a digital-to-analog converter to generate the reference signal based on the control signal, wherein the counter logic to stop counting up or down based on the control signal, wherein the counter logic to generate a count signal for the digital-to-analog converter for generating the reference signal, and wherein an optical transmitter to transmit the optical signal on a DC-coupled optical link, wherein the optical signal is a non-DC-balanced signal.