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公开(公告)号：US20170332159A1
公开(公告)日：2017-11-16
申请号：US15637939
申请日：2017-06-29
Applicant: Google Inc.
Inventor： Liang Du , Xiangjun Zhao , Cedric Fung Lam , Daoyi Wang , Changhong Joy Jiang
CPC classification number: H04Q11/0067 , H04J14/0241 , H04L69/18 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0079
Abstract: The communication system has first and second optical systems and an optical feed fiber in communication with the first optical system and arranged to convey a feeder optical signal to the second optical system. The first optical system includes a multiplexer configured to multiplex/demultiplex between a first optical line terminal signal, a second optical line terminal signal, and the feeder optical signal. The feeder optical signal includes the first optical line terminal signal and the second optical line terminal signal. The first optical line terminal signal includes a first upstream free spectral range and a first downstream free spectral range. The second optical line terminal signal includes a second upstream free spectral range and a second downstream free spectral range. The second optical system is in communication with the optical feed fiber and is configured to multiplex and demultiplex between the feeder optical signal and optical network unit signals.
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公开(公告)号：US09735541B1
公开(公告)日：2017-08-15
申请号：US14293480
申请日：2014-06-02
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Cedric Fung Lam , Steven Fong
CPC classification number: H01S5/143 , H01S3/1003 , H01S3/105 , H01S3/1062 , H01S5/02248 , H01S5/0617 , H01S5/06832 , H01S5/1085
Abstract: A method of calibrating a tunable laser includes shifting a filter output peak defined by a tunable optical feedback filter of the tunable laser in an optical spectral domain to align with a target etalon output peak of a plurality of spaced etalon output peaks defined by an etalon of the tunable laser. The method also includes shifting a cavity frequency grid defined by cavity modes of the tunable laser to align a target cavity mode of the cavity frequency grid with the filter output peak and shifting the spaced output peaks defined by the etalon to align a target etalon output peak with a target wavelength of an output wavelength grid. The method includes modifying a bias current and a modulation current of a gain section of the tunable laser to achieve a defined output modulation amplitude and a defined extinction ratio.
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公开(公告)号：US09729950B2
公开(公告)日：2017-08-08
申请号：US14952321
申请日：2015-11-25
Applicant: Google Inc.
Inventor： Liang Du , Xiangjun Zhao , Cedric Fung Lam , Daoyi Wang , Changhong Joy Jiang
CPC classification number: H04Q11/0067 , H04J14/0241 , H04L69/18 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0079
Abstract: The communication system has first and second optical systems and an optical feed fiber in communication with the first optical system and arranged to convey a feeder optical signal to the second optical system. The first optical system includes a multiplexer configured to multiplex/demultiplex between a first optical line terminal signal, a second optical line terminal signal, and the feeder optical signal. The feeder optical signal includes the first optical line terminal signal and the second optical line terminal signal. The first optical line terminal signal includes a first upstream free spectral range and a first downstream free spectral range. The second optical line terminal signal includes a second upstream free spectral range and a second downstream free spectral range. The second optical system is in communication with the optical feed fiber and is configured to multiplex and demultiplex between the feeder optical signal and optical network unit signals.
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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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公开(公告)号：US20130230034A1
公开(公告)日：2013-09-05
申请号：US13650984
申请日：2012-10-12
Applicant: GOOGLE INC.
Inventor： Cedric Fung Lam , Tony Ong , Ke Dong , Steven Fong , Yut Loy Chan , Yifan Gao , Milo Steven Medin , Dov Shimon Zimring
IPC: H04W4/00
CPC classification number: H04L12/2834 , H04J2203/0001 , H04J2203/0003 , H04L12/2856 , H04L12/2898 , H04L12/66 , H04L29/0621 , H04L2012/2841
Abstract: A local area network system that includes a residential gateway in wired communication with a remote service provider and multiple set top boxes in wired communication with the residential gateway. Each set top box includes a network extender having a wired connection to a residential gateway of a local area network, a media player in communication with the network extender, and at least one wireless transceiver in communication with the network extender. The media player includes a computing processor executing instructions to format a signal received from the network extender for use by a media device. Each set top box is configured as an access point for a local area network of the residential gateway.
Abstract translation: 一种局域网系统，其包括与远程服务提供商有线通信的住宅网关和与住宅网关有线通信的多个机顶盒。 每个机顶盒包括具有到局域网的住宅网关的有线连接的网络扩展器，与网络扩展器通信的媒体播放器以及与网络扩展器通信的至少一个无线收发器。 媒体播放器包括执行指令以格式化从网络扩展器接收的信号以供媒体设备使用的计算处理器。 每个机顶盒被配置为住宅网关的局域网的接入点。
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Patent Agency Ranking
公开(公告)号：US10158930B2
公开(公告)日：2018-12-18
申请号：US15637939
申请日：2017-06-29
Applicant: Google Inc.
Inventor： Liang Du , Xiangjun Zhao , Cedric Fung Lam , Daoyi Wang , Changhong Joy Jiang
Abstract: The communication system has first and second optical systems and an optical feed fiber in communication with the first optical system and arranged to convey a feeder optical signal to the second optical system. The first optical system includes a multiplexer configured to multiplex/demultiplex between a first optical line terminal signal, a second optical line terminal signal, and the feeder optical signal. The feeder optical signal includes the first optical line terminal signal and the second optical line terminal signal. The first optical line terminal signal includes a first upstream free spectral range and a first downstream free spectral range. The second optical line terminal signal includes a second upstream free spectral range and a second downstream free spectral range. The second optical system is in communication with the optical feed fiber and is configured to multiplex and demultiplex between the feeder optical signal and optical network unit signals.
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公开(公告)号：US20180176666A1
公开(公告)日：2018-06-21
申请号：US15385726
申请日：2016-12-20
Applicant: Google Inc.
Inventor： Liang Du , Yut Loy Chan , Xiangjun Zhao , Changhong Joy Jiang , Cedric Fung Lam , Daoyi Wang , Tao Zhang
IPC: H04Q11/00
CPC classification number: H04Q11/0005 , H04J14/02 , H04J14/0287 , H04J14/08 , H04Q11/0067 , H04Q2011/0035 , H04Q2011/0052 , H04Q2011/0081
Abstract: A remote node includes a first node input, a second node input, and an optical switch. The optical switch includes a first switch input optically coupled to the first node input, a second switch input optically coupled to the second node input, a first switch output switchably coupled to the first switch input or the second switch input, and a second switch output switchably coupled to the first switch input or the second switch input. The remote node includes a photodiode optically coupled to the second switch output, and a capacitor electrically coupled to the photodiode and the optical switch. When the first switch input is switchably coupled to the first switch output, the second switch input is switchably coupled to the second switch output. Light received by the second switch input passes out the second switch output to the photodiode. The photodiode charges the capacitor to a threshold charge.
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公开(公告)号：US09749080B2
公开(公告)日：2017-08-29
申请号：US14938146
申请日：2015-11-11
Applicant: Google Inc.
Inventor： Cedric Fung Lam , Liang Du , Changhong Joy Jiang , Ben Warren Segura , Xiangjun Zhao , Daoyi Wang
CPC classification number: H04J14/0247 , H04B10/2503 , H04J14/0221 , H04J14/0223 , H04J14/0242 , H04J14/0265 , H04J14/0282 , H04J14/08 , H04Q11/0067
Abstract: A communication system includes a first multiplexer configured to multiplex a first optical line terminal signal having a first multiplexing group and a second optical line terminal signal having a second multiplexing group into a first multiplexed signal. The communication system includes a second multiplexer configured to demultiplex a second multiplexed signal into a third optical line terminal signal having the first multiplexing group and a fourth optical line terminal signal having the second multiplexing group. Moreover, the communication system includes a third multiplexer optically connected with the first multiplexer and the second multiplexer, the third multiplexer configured to multiplex/demultiplex between a feeder optical signal and the first and second multiplexed signals. The first and second optical line terminal signals include a legacy upstream free spectral range, and the third and fourth optical line terminal signals include a legacy downstream free spectral range.
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公开(公告)号：US20170150243A1
公开(公告)日：2017-05-25
申请号：US14952321
申请日：2015-11-25
Applicant: Google Inc.
Inventor： Liang Du , Xiangjun Zhao , Cedric Fung Lam , Daoyi Wang , Changhong Joy Jiang
CPC classification number: H04Q11/0067 , H04J14/0241 , H04L69/18 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0032 , H04Q2011/0079
Abstract: The communication system has first and second optical systems and an optical feed fiber in communication with the first optical system and arranged to convey a feeder optical signal to the second optical system. The first optical system includes a multiplexer configured to multiplex/demultiplex between a first optical line terminal signal, a second optical line terminal signal, and the feeder optical signal. The feeder optical signal includes the first optical line terminal signal and the second optical line terminal signal. The first optical line terminal signal includes a first upstream free spectral range and a first downstream free spectral range. The second optical line terminal signal includes a second upstream free spectral range and a second downstream free spectral range. The second optical system is in communication with the optical feed fiber and is configured to multiplex and demultiplex between the feeder optical signal and optical network unit signals.
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公开(公告)号：US09276678B1
公开(公告)日：2016-03-01
申请号：US14338623
申请日：2014-07-23
Applicant: Google Inc.
Inventor： Zixia Huang , Marvin Weinstein , Nicholas Ng , Ke Dong , Cedric Fung Lam , Tony Ong , Wenlei Dai
IPC: H04B10/08 , H04B10/118 , H04B10/079
CPC classification number: G01S19/28 , G01S19/05 , G01S19/23 , H04B10/0791 , H04B10/118
Abstract: A signal distribution system includes global positioning system receivers in communication with optical line terminals and a system manager. Each global positioning system receiver receives a signal from a corresponding global positioning system satellite. Each optical line terminal includes a management card and a line card. The management card receives a signal from a corresponding global positioning system receiver. Each line card receives a signal from each management card and determines a signal drift and a phase precision for each signal. The system manager receives a failure communication for a global positioning system signal from a line card when the signal drift of the global positioning system signal is above a threshold signal drift or the phase precision of the signal is below a threshold phase precision. The system manager identifies a failure location of the signal within the system based on one or more received failure communications.
Abstract translation: 信号分配系统包括与光线路终端通信的全球定位系统接收机和系统管理器。 每个全球定位系统接收机从相应的全球定位系统卫星接收信号。 每个光线路终端包括管理卡和线卡。 管理卡从相应的全球定位系统接收器接收信号。 每个线卡从每个管理卡接收信号，并确定每个信号的信号漂移和相位精度。 当全球定位系统信号的信号漂移高于阈值信号漂移或信号的相位精度低于阈值相位精度时，系统管理器从线卡接收全球定位系统信号的故障通信。 系统管理者基于一个或多个接收到的故障通信来识别系统内的信号的故障位置。
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