公开(公告)号：US10439716B2

公开(公告)日：2019-10-08

申请号：US15704614

申请日：2017-09-14

Applicant: Facebook, Inc.

Inventor： Eric Douglas Miller ,  Kevin Michael Birnbaum ,  Chien-Chung Chen ,  Andrew Todd Grier

IPC: H04B10/00 ,  H04B10/116 ,  G01B11/27 ,  H04B10/114 ,  G02B27/10 ,  H04B10/50 ,  H04B10/54 ,  H04B10/40 ,  G02B26/08 ,  H04B10/112 ,  H04J14/08 ,  H04J14/00 ,  H04B10/516

Abstract: A compact system for active co-boresight measurement includes a detector, a steering mirror, and a controller. The detector detects a portion of a transmission beam emitted by a transceiver and a portion of a received beam that is received from a remote terminal. The controller measures an offset between the detected portion of the received beam and the detected portion of the transmission beam. The controller controls a position of the steering mirror to align the portion of the received beam with a defined position on the detector, the defined position based in part on the offset.

公开(公告)号：US10148362B2

公开(公告)日：2018-12-04

申请号：US15655697

申请日：2017-07-20

Applicant: Facebook, Inc.

Inventor： Kevin Michael Birnbaum ,  Chien-Chung Chen

IPC: H04B10/61 ,  H04B10/071 ,  H04B10/112 ,  H04B10/11 ,  H04B10/114 ,  H04B10/60

Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first mirror having a first actuator for adjusting a position of the first mirror in a path of a first optical beam and a first optical detector for receiving light reflected from the first mirror. The system also includes a second mirror having a second actuator for adjusting a position of the second mirror in a path of a second optical beam and a second optical detector for receiving light reflected from the second mirror. The system includes an interferometer for measuring an interference between the first and second optical beams and a third optical detector for receiving light from the second interfered optical beam. Intensity of the first interfered optical beam is increased by the interference, and intensity of the second interfered optical beam is decreased by the interference.

公开(公告)号：US09838139B2

公开(公告)日：2017-12-05

申请号：US14982491

申请日：2015-12-29

Applicant: Facebook, Inc.

Inventor： Kevin Michael Birnbaum ,  Chien-Chung Chen

IPC: H04B10/61 ,  H04B10/071 ,  H04B10/11 ,  H04B10/112 ,  H04B10/114 ,  H04B10/60

CPC classification number: H04B10/615 ,  H04B10/071 ,  H04B10/11 ,  H04B10/112 ,  H04B10/1121 ,  H04B10/114 ,  H04B10/60

Abstract: Optical communication systems and methods using coherently combined optical beams are disclosed. A representative system includes a first mirror having a first actuator for adjusting a position of the first mirror in a path of a first optical beam and a first optical detector for receiving light reflected from the first mirror. The system also includes a second mirror having a second actuator for adjusting a position of the second mirror in a path of a second optical beam and a second optical detector for receiving light reflected from the second mirror. The system includes an interferometer for measuring an interference between the first and second optical beams and a third optical detector for receiving light from the second interfered optical beam. Intensity of the first interfered optical beam is increased by the interference, and intensity of the second interfered optical beam is decreased by the interference.