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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：US20170134113A1
公开(公告)日：2017-05-11
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
IPC: H04J14/02
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：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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Patent Agency Ranking
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：US20180175935A1
公开(公告)日：2018-06-21
申请号：US15385696
申请日：2016-12-20
Applicant: Google Inc.
Inventor： Liang Du , Yut Loy Chan , Xiangjun Zhao , Changhong Joy Jiang , Cedric Fund Lam , Daoyi Wang , Tao Zhang
CPC classification number: H04B10/2503 , H04J14/0227 , H04J14/025 , H04J14/0282 , H04J14/0287 , H04J14/0291
Abstract: A carrier office includes an optical line terminal, a first transmit-erbium-doped fiber amplifier (EDFA), and a second transmit-EDFA. The OLT is configured to transmit first and second optical signals. The first transmit-EDFA is optically coupled to the OLT and a first feeder fiber, and the first feeder fiber is optically coupled to a first remote node (RN). The first transmit-EDFA is operable between a respective enabled state and a respective disabled state. The second transmit-EDFA is optically coupled to the OLT and a second feeder fiber, and the second feeder fiber is optically coupled to a second RN. The second transmit-EDFA is operable between a respective enabled state and a respective disabled state.
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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：US09559802B1
公开(公告)日：2017-01-31
申请号：US14501347
申请日：2014-09-30
Applicant: Google Inc.
Inventor： Pedram Zare Dashti , Liang Du
CPC classification number: H04J14/0221 , H04B10/25 , H04B10/27 , H04J14/0246 , H04J14/0282 , H04J14/08
Abstract: An optical network node includes first and second node inputs receiving first and second multiplexed optical signals, respectively. The optical network node includes node outputs, each outputting a separate replicated or demultiplexed optical signal. The optical network node includes a first optical power splitter having a first splitter input connected to the first node input and first splitter outputs connected to the node outputs. The optical network node includes a second optical power splitter having a second splitter input connected to the second node input and second splitter outputs connected to the node outputs. The optical network node includes an arrayed waveguide grating having a grating input connected to the first node input and grating outputs connected to the node outputs, the arrayed waveguide grating demultiplexing the first multiplexed optical signal, when the first multiplexed optical signal is wavelength division multiplexed.
Abstract translation: 光网络节点包括分别接收第一和第二复用光信号的第一和第二节点输入。 光网络节点包括节点输出，每个输出单独复制或解复用的光信号。 光网络节点包括具有连接到第一节点输入的第一分离器输入和连接到节点输出的第一分离器输出的第一光功率分配器。 光网络节点包括具有连接到第二节点输入的第二分路器输入和连接到节点输出的第二分路器输出的第二光功率分配器。 光网络节点包括阵列波导光栅，其具有连接到第一节点输入的光栅输入和连接到节点输出的光栅输出，当第一多路复用光信号被波分复用时，阵列波导光栅对第一多路复用光信号进行解复用。
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