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公开(公告)号：US09948422B2
公开(公告)日：2018-04-17
申请号：US15428859
申请日：2017-02-09
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Chiachi Wang , Daoyi Wang , Cedric Fung Lam , Liang Du , Changhong Joy Jiang
CPC classification number: H04J14/0223 , H04B10/296 , H04J14/0205 , H04J14/0221 , H04J14/0282 , H04J14/083
Abstract: A communication system includes a first optical system and a second optical system optically connected to a clamping laser and a pump laser. The first optical system includes first and second optical splitters. The first optical splitter is configured to receive a clamping laser signal from the clamping laser and split the signal into split clamping laser signals. The second optical splitter is configured to receive a pump laser signal from the pump laser and split signal into split pump laser signals. The second optical system is optically connected to the first optical system and includes amplifier systems. Each amplifier system is configured to receive a multiplexed signal. The second optical system includes first and second combiners optically connected to an erbium-doped fiber. The first combiner is optically connected to the first splitter, and the second combiner is optically connected to the second splitter.
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公开(公告)号：US09608758B1
公开(公告)日：2017-03-28
申请号：US14953525
申请日：2015-11-30
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Chiachi Wang , Daoyi Wang , Cedric Fung Lam , Liang Du , Changhong Joy Jiang
CPC classification number: H04J14/0223 , H04B10/296 , H04J14/0205 , H04J14/0221 , H04J14/0282 , H04J14/083
Abstract: A communication system includes a first optical system and a second optical system optically connected to a clamping laser and a pump laser. The first optical system includes first and second optical splitters. The first optical splitter is configured to receive a clamping laser signal from the clamping laser and split the signal into split clamping laser signals. The second optical splitter is configured to receive a pump laser signal from the pump laser and split signal into split pump laser signals. The second optical system is optically connected to the first optical system and includes amplifier systems. Each amplifier system is configured to receive a multiplexed signal. The second optical system includes first and second combiners optically connected to an erbium-doped fiber. The first combiner is optically connected to the first splitter, and the second combiner is optically connected to the second splitter.
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3.发明申请公开(公告)号：US20170288775A1
公开(公告)日：2017-10-05
申请号：US15629208
申请日：2017-06-21
Applicant: Google Inc.
Inventor： Chiachi Wang , Christopher Joshua Shiro Ito
IPC: H04B10/118 , H04B10/112
CPC classification number: H04B10/118 , H04B10/1125
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.
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公开(公告)号：US09716551B2
公开(公告)日：2017-07-25
申请号：US14818706
申请日：2015-08-05
Applicant: Google Inc.
Inventor： Chiachi Wang , Christopher Joshua Shiro Ito
IPC: H04B10/118
CPC classification number: H04B10/118 , H04B10/1125
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.
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公开(公告)号：US20170155461A1
公开(公告)日：2017-06-01
申请号：US15428859
申请日：2017-02-09
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Chiachi Wang , Daoyi Wang , Cedric Fung Lam , Liang Du , Changhong Joy Jiang
CPC classification number: H04J14/0223 , H04B10/296 , H04J14/0205 , H04J14/0221 , H04J14/0282 , H04J14/083
Abstract: A communication system includes a first optical system and a second optical system optically connected to a clamping laser and a pump laser. The first optical system includes first and second optical splitters. The first optical splitter is configured to receive a clamping laser signal from the clamping laser and split the signal into split clamping laser signals. The second optical splitter is configured to receive a pump laser signal from the pump laser and split signal into split pump laser signals. The second optical system is optically connected to the first optical system and includes amplifier systems. Each amplifier system is configured to receive a multiplexed signal. The second optical system includes first and second combiners optically connected to an erbium-doped fiber. The first combiner is optically connected to the first splitter, and the second combiner is optically connected to the second splitter.
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Patent Agency Ranking
公开(公告)号：US20170339695A1
公开(公告)日：2017-11-23
申请号：US15156459
申请日：2016-05-17
Applicant: Google Inc.
Inventor： Chiachi Wang , Sheng-Hui Yang , Romain Clement , Michael Sholl
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.
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公开(公告)号：US09755739B1
公开(公告)日：2017-09-05
申请号：US15171348
申请日：2016-06-02
Applicant: Google Inc.
Inventor： Chiachi Wang , Michael Sholl
IPC: G02B26/00 , G02B6/42 , G02B6/26 , G02B6/28 , H04B10/11 , H04B10/2581 , H04B10/50 , G02B6/036 , G02B27/09 , G02B6/34
CPC classification number: H04B10/11 , G02B6/03622 , G02B6/34 , G02B27/0927 , H04B10/1127 , H04B10/118 , H04B10/2581 , H04B10/503
Abstract: A method of free-space optical communication includes guiding, by focusing optics, an optical communication beam emitted from an optical transmitter into a double-clad optical fiber. The optical communication beam carrying data. The double-clad optical fiber has first and second ends, where the first end is arranged to receive the optical communication beam. The double-clad optical fiber includes a fiber core, a first cladding, and a second cladding. The method also includes directing, by collimating optics, the optical communication beam from the second end of the double-clad optical fiber toward an optical receiver of a communication terminal. the second portion of the optical communication beam arranged concentrically around the first portion of the optical communication beam, the first portion of the optical communication beam having a higher intensity than the second portion of the optical communication beam.
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公开(公告)号：US09723386B1
公开(公告)日：2017-08-01
申请号：US14269385
申请日：2014-05-05
Applicant: Google Inc.
Inventor： Melvin Sze-ming Ni , Chiachi Wang
IPC: H04B10/00 , H04Q11/00 , H04B10/112
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.
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公开(公告)号：US09712900B1
公开(公告)日：2017-07-18
申请号：US14253394
申请日：2014-04-15
Applicant: Google Inc.
Inventor： Chiachi Wang , Romain Clement
CPC classification number: H04Q11/0005 , H01S3/06754 , H04B10/00 , H04B10/50 , H04J14/02 , H04Q2011/0016 , H04Q2011/0041
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.
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10.发明申请Optical Amplifier with Closed Loop Control for Scintillation Compensation in Free Space Optical Communications 有权具有闭环控制的光放大器，用于自由空间光通信中的闪烁补偿公开(公告)号：US20170041074A1
公开(公告)日：2017-02-09
申请号：US14818706
申请日：2015-08-05
Applicant: Google Inc.
Inventor： Chiachi Wang , Christopher Joshua Shiro Ito
IPC: H04B10/118
CPC classification number: H04B10/118 , H04B10/1125
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.
Abstract translation: 一种方法包括：在第一通信终端处通过自由空间光链路从第二通信终端接收第一光信号，并基于第一光信号确定光链路的接收功率。 该方法还包括基于光链路的接收功率调整第一通信终端的输出放大。 输出放大被调整以提供具有用于维持光链路的最小传输功率的第二光信号。 该方法通过光链路将第二光信号从第一通信终端发送到第二通信终端。
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