Apparatus and method for conrtolling a gain of optical receiver in a optical communication system

The present invention for gain control apparatus and method of the optical receiver for controlling the output gain of the optical receiver for an optical communication system linearly, the technical configuration according to a gain adjuster provided in the optical receiver of an optical communication system, the input light and a light receiving element that converts the signal to a current signal, and signal detection means for outputting a voltage signal corresponding to the intensity variation of the current signal, the attenuation of the RF signal restored from the current signal on the basis of the voltage signal determining attenuation also features configured to include the determining means, the amplification section for amplifying and outputting the recovered RF signals. Therefore, in accordance with the present invention, through the linear gain control of an optical receiver it may provide a reliable broadcast signal, and by a relatively simple circuit controls the gain of the optical receiver, a configuration can simplify the circuit configuration of the optical receiver. Optical Communication Systems, PON, EPON, an optical receiver, a digital transceiver, ONT, gain, attenuation, control