FIELD: optical communication.
SUBSTANCE: invention relates to optical communication, where solid-state photomultipliers are used as a receiving detector. The time demultiplexing method for receivers based on an array of multipixel photodetectors in optical communication lines with quantum information reception includes the stages at which: organize an array of multipixel detectors - a detector field (DF) - in the form of a circle; a high-speed deflecting element (DE) is installed so that it can direct the beam to each detector from the DF, the time for redirecting the beam between the detectors was less than the interval between successive low-photon optical pulses, and the time of keeping the beam on a separate photodetector was longer than the duration of an individual low-photon optical pulse; a stream of low-photon optical pulses is formed so that it falls on DE along the line of zero deflection of the beam; the angle of deflection of the flow of low-photon optical pulses is modulated so that the frequency of their incidence on a separate multi-pixel photodetector does not exceed the maximum possible frequency of recording low-photon optical pulses and each optical pulse is recorded by a separate detector.
EFFECT: makes it possible to create a method for temporal demultiplexing of low-photon optical pulse streams with a high reference frequency for receivers based on an array of multipixel photodetectors in optical communication lines with quantum information reception.
3 cl, 5 dwg
