公开(公告)号：US20200007230A1

公开(公告)日：2020-01-02

申请号：US16570031

申请日：2019-09-13

Applicant: X Development LLC

Inventor： Chiachi Wang

IPC: H04B10/11 ,  H04B10/2581 ,  H04J14/02 ,  H04B10/25 ,  H04B10/112

Abstract: A free space optical communication system transmits and receives optical signals in a colorless manner using an optical circulator. The system installs the optical circulator with a single mode (SM) fiber at port 1, a double clad (DC) fiber at port 2, and a multimode (MM) fiber at port 3. The system injects a first optical signal into a core of the SM fiber. The system then routes the first optical signal at port 1, using the optical circulator, into a SM core of the DC fiber via Port 2. Further, the system injects a second optical signal into a first cladding of the DC fiber. The system then routes the second optical signal at port 2, using the optical circulator, into the MM fiber via Port 3.

公开(公告)号：US10122457B2

公开(公告)日：2018-11-06

申请号：US15629208

申请日：2017-06-21

Applicant: X Development LLC

Inventor： Chiachi Wang ,  Christopher Joshua Shiro Ito

IPC: H04B10/112 ,  H04B10/118

Abstract: A method includes receiving a first optical signal at a first communication terminal from a second communication terminal through a free space optical link and determining a receiving power for the optical link based on the first optical signal. The method further includes adjusting an output amplification at the first communication terminal based on the receiving power for the optical link. The output amplification is adjusted to provide a second optical signal with a minimum transmission power for maintaining the optical link. The method transmits the second optical signal from the first communication terminal to the second communication terminal through the optical link.

公开(公告)号：US10992379B2

公开(公告)日：2021-04-27

申请号：US16570031

申请日：2019-09-13

Applicant: X Development LLC

Inventor： Chiachi Wang

IPC: H04B10/11 ,  H04B10/2581 ,  H04J14/02 ,  H04B10/112 ,  H04B10/25 ,  H04B10/60 ,  H04B10/40 ,  H04B10/50

Abstract: A free space optical communication system transmits and receives optical signals in a colorless manner using an optical circulator. The system installs the optical circulator with a single mode (SM) fiber at port 1, a double clad (DC) fiber at port 2, and a multimode (MM) fiber at port 3. The system injects a first optical signal into a core of the SM fiber. The system then routes the first optical signal at port 1, using the optical circulator, into a SM core of the DC fiber via Port 2. Further, the system injects a second optical signal into a first cladding of the DC fiber. The system then routes the second optical signal at port 2, using the optical circulator, into the MM fiber via Port 3.

公开(公告)号：US10420108B2

公开(公告)日：2019-09-17

申请号：US16020357

申请日：2018-06-27

Applicant: X Development LLC

Inventor： Chiachi Wang ,  Sheng-Hui Yang ,  Romain Clement ,  Michael Sholl

IPC: H04B10/00 ,  H04W72/04 ,  H04B10/112 ,  H04B7/185

Abstract: A method includes receiving a first optical signal at a first communication terminal from a second communication terminal through a free space optical link. The received optical signal contains a modulated unique frequency tone. The method also includes mixing the modulated unique frequency tone with a reference signal to provide a mixed output signal and determining a signal strength of the modulated unique frequency tone based on the mixed output signal. The reference signal includes a same frequency as the modulated unique frequency tone. The method adjusts an optical head of the first communication terminal to establish acquisition and optical beam pointing with the second communication terminal based on the signal strength of the modulated unique frequency tone received from the second communication terminal.

公开(公告)号：US20180102843A1

公开(公告)日：2018-04-12

申请号：US15290153

申请日：2016-10-11

Applicant: X Development LLC

Inventor： Chiachi Wang

IPC: H04B10/11 ,  H04B10/2581 ,  H04J14/02 ,  H04B10/25

CPC classification number: H04B10/11 ,  H04B10/1123 ,  H04B10/2503 ,  H04B10/2581 ,  H04J14/0227 ,  H04J14/0278

Abstract: A free space optical communication system transmits and receives optical signals in a colorless manner using an optical circulator. The system installs the optical circulator with a single mode (SM) fiber at port 1, a double clad (DC) fiber at port 2, and a multimode (MM) fiber at port 3. The system injects a first optical signal into a core of the SM fiber. The system then routes the first optical signal at port 1, using the optical circulator, into a SM core of the DC fiber via Port 2. Further, the system injects a second optical signal into a first cladding of the DC fiber. The system then routes the second optical signal at port 2, using the optical circulator, into the MM fiber via Port 3.

公开(公告)号：US10461854B2

公开(公告)日：2019-10-29

申请号：US16055801

申请日：2018-08-06

Applicant: X Development LLC

Inventor： Chiachi Wang

IPC: H04B10/11 ,  H04B10/2581 ,  H04J14/02 ,  H04B10/25 ,  H04B10/112 ,  H04B10/60 ,  H04B10/40 ,  H04B10/50

Abstract: A free space optical communication system transmits and receives optical signals in a colorless manner using an optical circulator. The system installs the optical circulator with a single mode (SM) fiber at port 1, a double clad (DC) fiber at port 2, and a multimode (MM) fiber at port 3. The system injects a first optical signal into a core of the SM fiber. The system then routes the first optical signal at port 1, using the optical circulator, into a SM core of the DC fiber via Port 2. Further, the system injects a second optical signal into a first cladding of the DC fiber. The system then routes the second optical signal at port 2, using the optical circulator, into the MM fiber via Port 3.

公开(公告)号：US10069562B2

公开(公告)日：2018-09-04

申请号：US15290153

申请日：2016-10-11

Applicant: X Development LLC

Inventor： Chiachi Wang

IPC: H04B10/11 ,  H04B10/2581 ,  H04B10/25 ,  H04J14/02

Abstract: A free space optical communication system transmits and receives optical signals in a colorless manner using an optical circulator. The system installs the optical circulator with a single mode (SM) fiber at port 1, a double clad (DC) fiber at port 2, and a multimode (MM) fiber at port 3. The system injects a first optical signal into a core of the SM fiber. The system then routes the first optical signal at port 1, using the optical circulator, into a SM core of the DC fiber via Port 2. Further, the system injects a second optical signal into a first cladding of the DC fiber. The system then routes the second optical signal at port 2, using the optical circulator, into the MM fiber via Port 3.

公开(公告)号：US10039103B2

公开(公告)日：2018-07-31

申请号：US15156459

申请日：2016-05-17

Applicant: X Development LLC

Inventor： Chiachi Wang ,  Sheng-Hui Yang ,  Romain Clement ,  Michael Sholl

IPC: H04B10/07 ,  H04W72/04 ,  H04B7/185

CPC classification number: H04W72/0453 ,  H04B7/18513 ,  H04B10/1123

Abstract: A method includes receiving a first optical signal at a first communication terminal from a second communication terminal through a free space optical link. The received optical signal contains a modulated unique frequency tone. The method also includes mixing the modulated unique frequency tone with a reference signal to provide a mixed output signal and determining a signal strength of the modulated unique frequency tone based on the mixed output signal. The reference signal includes a same frequency as the modulated unique frequency tone. The method adjusts an optical head of the first communication terminal to establish acquisition and optical beam pointing with the second communication terminal based on the signal strength of the modulated unique frequency tone received from the second communication terminal.

公开(公告)号：US10020883B1

公开(公告)日：2018-07-10

申请号：US15631244

申请日：2017-06-23

Applicant: X Development LLC

Inventor： Melvin Sze-Ming Ni ,  Chiachi Wang

IPC: H04B10/00 ,  H04B10/118 ,  H04B7/185

CPC classification number: H04B10/118 ,  H04B7/18513 ,  H04B10/1125 ,  H04B10/1127 ,  H04B10/1129 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0016 ,  H04Q2011/0026

Abstract: A communication system includes a transparent refractive optical wedge, a steerable mirror, a position feedback device, and a transceiver. The transparent refractive optical wedge has first and second faces angled with respect to each other and receives first and second optical signals through both the first and second faces. The first and second optical signals travel along parallel or common paths through the first face and diverge at a deflection angle with respect to each other through the second face. The steerable mirror is in optical communication with the first face of the optical wedge, the position feedback device, and the transceiver. The position feedback device adjusts a position of the steerable mirror to maintain the alignment of the reflected signal with the position feedback device. The transceiver has an optical transmitter transmitting one of the optical signals and an optical receiver receiving the other optical signal.

公开(公告)号：US10299019B1

公开(公告)日：2019-05-21

申请号：US15631761

申请日：2017-06-23

Applicant: X Development LLC

Inventor： Chiachi Wang ,  Romain Clement

IPC: H04Q11/00 ,  H01S3/067 ,  H04J14/02 ,  H04B10/50

Abstract: A communication method includes combining first and second optical signals into a third optical signal, processing the third optical signal, and separating the third optical signal back into the first and second optical signals. The method includes sending the first optical signal out a first system port, sending the second optical signal out a second system port, receiving a fourth optical signal in the first system port, and receiving a fifth optical signal in the second system port. The method also includes combining the fourth and fifth optical signals into a sixth optical signal, processing the sixth optical signal, and separating the sixth optical signal back into the fourth and fifth optical signals.