Patent ID: 11880068
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A space optical coupling apparatus, comprising: M first couplers, a phase adjustment apparatus, M second couplers, a coupling apparatus, and a controller, wherein the M first couplers are in a one-to-one correspondence with the M second couplers, and M is a positive integer greater than 1;
each of the first M couplers is configured to receive a beam and couple the beam to the phase adjustment apparatus;
the phase adjustment apparatus comprises M input ports, M phase adjusters, M output ports, N beam splitters, and N detectors, wherein 1≤N≤M, and N is an integer; and the M input ports are connected in a one-to-one correspondence with the M phase adjusters, and the M phase adjusters are connected in a one-to-one correspondence with the M output ports;
the phase adjustment apparatus receives M beams respectively from the M first couplers through the M input ports; each beam splitter of the N beam splitters is located between an input port and a phase adjuster corresponding to the input port, and is configured to split a received beam into two beams, one of the two beams is sent to a corresponding detector, and one of the two beams is sent to a corresponding phase adjuster; and the N beam splitters correspond to N input ports of the M input ports;
the M second couplers are configured to: receive output light respectively from the M output ports, and couple the output light from the M output ports to the coupling apparatus;
the coupling apparatus is configured to couple the output light from the M output ports to a single-mode fiber; and
the controller is configured to: obtain a beam intensity detected by each detector and a beam intensity on the single-mode fiber, and control, based on the beam intensity detected by each detector and the beam intensity on the single-mode fiber, the M phase adjusters to respectively adjust phases of the beams received by the M first couplers;
the controller is further configured to adjust the coupling apparatus to adjust a spot of the output light to be at a center position of an end face of the single-mode fiber.