US 12,231,170 B1
Systems and methods for optical wireless communication
Haipeng Zhang, Broomfield, CO (US); Zhensheng Jia, Superior, CO (US); Junwen Zhang, Shanghai (CN); Mu Xu, Shoreline, WA (US); and Luis Alberto Campos, Superior, CO (US)
Assigned to Cable Television Laboratories, Inc., Louisville, CO (US)
Filed by CABLE TELEVISION LABORATORIES, INC., Louisville, CO (US)
Filed on Oct. 24, 2023, as Appl. No. 18/383,149.
Application 18/383,149 is a continuation of application No. 17/384,403, filed on Jul. 23, 2021, granted, now 11,804,904.
Claims priority of provisional application 63/055,366, filed on Jul. 23, 2020.
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/00 (2013.01); H04B 10/112 (2013.01); H04B 10/50 (2013.01); H04B 10/61 (2013.01)
CPC H04B 10/505 (2013.01) [H04B 10/1121 (2013.01); H04B 10/614 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of beam steering from a first transceiver to a second transceiver disposed remotely from the first transceiver in an optical communication system, comprising the steps of:
(a) receiving, from the first transceiver, an initial free space optical (FSO) beam along a first FSO path;
(b) steering the received FSO beam to the second transceiver along a second FSO path different from the first FSO path;
(c) capturing, along the second FSO path, a reflected portion of the steered FSO beam;
(d) optically relaying the captured reflected portion as an optical tracking signal;
(e) converting the optical tracking signal into an electrical feedback control signal; and
(f) adjusting a direction of the steered FSO beam to the second transceiver based on the electrical feedback control signal.