Optical receiver in an optical communication system, a control method of the photon detector and the apparatus, and dark count evaluation method of the photon detector

摘要

United States Patent optical receiving device allowing dark count evaluation while performing the receiving operation of the photon detector, a control method and apparatus of the photon detector, as well as dark count evaluation method of the photon detector substantially Z pulse information detection unit 205 and the control unit 204 to selectively extract the output of the photon detector PD1, PD2 with respect to the transmission light pulse of light intensity zero that is included in the A transmitted light pulse sequence has a dark count evaluation unit 206 for evaluating the dark count of the photon detector based on photon detection times shown are extracted output, aFIELD 3