The invention discloses a micro-channel
photomultiplier with a composite
waveguide anode for spatial
optical communication, and belongs to the field of photoelectric technology. The prior art needs to use three optical antennas, thereby enabling the size and weight of an
optical transmitter and
receiver to be increased remarkably, enabling the structure to be complex, and enabling the installation and debugging difficulty to be great. The micro-channel
photomultiplier consists of a window, a photoelectric
cathode, a micro-channel plate, and an
anode, wherein the micro-channel plate has a plurality of stages. Voltages in the same direction are applied among the photoelectric
cathode, all stages of the micro-channel plate and the
anode, and a light current is outputted through the anode. The micro-channel
photomultiplier is characterized in that the anode consists of a transmitting-type anode, an anode micro-channel plate, and a position-sensitive anode; the transmitting-type anode and the position-sensitive anode are respectively located on the front and back surfaces of the anode micro-channel plate; an
electron beam is focused between the last stage of the micro-channel plate and the transmitting-type anode; the transmitting-type anode outputs a
laser communication
signal light current; and the position-sensitive anode outputs a
laser communication positioning light current. The micro-channel photomultiplier enables the precise tracking and communication to be integrated into one body, thereby reducing one
optical antenna.