SELF-HEALING APPARATUS AND METHOD OF OPTICAL RECEIVER

摘要

PURPOSE: A self-healing apparatus and method of an optical receiver are provided to prevent a transfer rate determining error by considering a DC level variation value according a temperature change in an optical receiver in determining a transfer rate of an inputted optical signal. CONSTITUTION: A photoelectric converter(100) converts an input optical signal into an electric reception signal. An amplifier(200) amplifies the reception signal outputted from the photoelectric converter(100). A transfer rate discriminating unit(300) outputs a delay signal by delaying the amplified reception signal for a predetermined time and a recognition signal obtained by exclusively ANDing the reception signal. A clock/data reproducing unit(400) receives the reception signal, reproduces a clock and a data according to a reference clock and outputs them. A transfer rate signal generator(500) provides the reference clock in response to the transfer rate conversion signal. A signal stabilizing unit(600) filters a lock signal outputted from the clock/data reproducing unit(400) and outputs it to a controller. A temperature sensing unit(700) outputs an internal temperature sensing signal of the optical receiver. The controller(800) determines a transfer rate according to a voltage level change value according to a previously stored temperature on the basis of the internal temperature of the optical receiver and a voltage level of the recognition signal outputted from the transfer rate discriminating unit(300), and outputs the pre-set transfer rate conversion signal.