Abstract: This application provides an optical emission apparatus, an optical communication system, and an optical communication method. Light beams of N optical emission units in the optical emission apparatus are adjusted, so that an optical power of entering an optical receiving apparatus is maximized, and impact of a speckle caused by turbulence is minimized, thereby improving receiving efficiency of an optical antenna. The optical emission apparatus includes a first optical splitter and N optical emission units, where N is an integer greater than 1; the first optical splitter is configured to transmit received same signal light to the N optical emission units; and the N optical emission units are configured to output the signal light from the first optical splitter, to obtain light beams distributed based on a preset proportion.

Abstract: This application discloses a method and an apparatus for controlling an optical switch matrix. The method includes: setting row drives corresponding to P input ports to a reset row drive value, and setting column drives corresponding to Q output ports to a reset column drive value, so that optical switches at intersections are in a first state; successively setting, based on time, a row drive corresponding to an ith input port to values in a switching row drive sequence, and successively setting, based on time, a column drive corresponding to a jth output port to values in a switching column drive sequence, so that a target optical switch in the P×Q optical switches remains in the first state, and the other optical switches are switched from the first state to a second state in first time periods.

Abstract: This application discloses a method and an apparatus for controlling an optical switch matrix. The method includes: setting row drives corresponding to P input ports to a reset row drive value, and setting column drives corresponding to Q output ports to a reset column drive value, so that optical switches at intersections are in a first state; successively setting, based on time, a row drive corresponding to an ith input port to values in a switching row drive sequence, and successively setting, based on time, a column drive corresponding to a jth output port to values in a switching column drive sequence, so that a target optical switch in the P×Q optical switches remains in the first state, and the other optical switches are switched from the first state to a second state in first time periods.