公开(公告)号：US20230361884A1

公开(公告)日：2023-11-09

申请号：US18312995

申请日：2023-05-05

Applicant: Electronics and Telecommunications Research Institute

Inventor： Minchul KIM ,  Chun Ju YOUN ,  Kap-Joong KIM ,  Kyoungchun LIM ,  Byung Seok CHOI ,  Joong-Seon CHOE

IPC: H04B10/70 ,  H04B10/11

CPC classification number: H04B10/70 ,  H04B10/11

Abstract: Provided are a beam tracking module, a free-space quantum communication device, and a free-space optical communication device. The beam tracking module for free-space quantum communication includes a controller configured to determine a divergence angle of a reference beam on the basis of divergence angle control data, a beam path control optical part configured to output the reference beam, and a beam transmitter configured to adjust the divergence angle through the beam path control optical part so that the reference beam having the determined divergence angle is output.