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公开(公告)号：US20170317778A1
公开(公告)日：2017-11-02
申请号：US15655307
申请日：2017-07-20
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：US09368941B1
公开(公告)日：2016-06-14
申请号：US14826363
申请日：2015-08-14
Applicant: Google Inc.
Inventor： Pedram Zare Dashti , Changhong Joy Jiang , Jun Zheng , Yi Wang
IPC: H01S3/10 , H01S5/40 , H01S5/024 , H01S5/068 , H01S5/0687 , H01S5/12 , H01S5/06 , H01S5/0683 , H01S5/026 , H01S3/102 , H01S3/131 , H01S3/04
CPC classification number: H01S5/4087 , H01S3/0405 , H01S3/1028 , H01S3/1317 , H01S5/02415 , H01S5/02453 , H01S5/0261 , H01S5/0607 , H01S5/0612 , H01S5/06804 , H01S5/06837 , H01S5/0687 , H01S5/12
Abstract: A device includes an array of optical transmitters having first and second temperature sensors each disposed at or near a first and second end of the array of the transmitters. The device includes a controller in communication with the temperature sensors and the transmitters. The controller receives temperature measurements from the temperatures sensors and determines a temperature difference between a first temperature measurement of the first temperature sensor and a second temperature measurement of the second temperature sensor. The controller determines a compensation for each transmitter within the transmitter array based on the temperature difference and a transmitter position within the array of transmitters. The compensation causes the corresponding transmitter to transmit at a wavelength associated with that transmitter. The controller executes the compensations for the transmitters.
Abstract translation: 一种设备包括具有第一和第二温度传感器的光发射器阵列，每个温度传感器设置在发射器阵列的第一和第二端处或附近。 该装置包括与温度传感器和发射器通信的控制器。 控制器从温度传感器接收温度测量值，并确定第一温度传感器的第一温度测量值与第二温度传感器的第二温度测量值之间的温差。 控制器基于发射机阵列内的温度差和发射机位置确定发射机阵列内的每个发射机的补偿。 补偿使相应的发射机以与该发射机相关联的波长发射。 控制器执行发射机的补偿。
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公开(公告)号：US20180157001A1
公开(公告)日：2018-06-07
申请号：US15371577
申请日：2016-12-07
Applicant: Google Inc.
Inventor： Changzhan Gu , Changhong Joy Jiang , Zhibin Zhang , Jian Ho
CPC classification number: G02B6/4466 , G02B6/32 , H02J7/025 , H02J50/10 , H04B10/11 , H04B10/114 , H04B10/25 , H04B10/27
Abstract: A method includes receiving an optical signal from an external network at a first optical terminal affixed to an external side of a substantially transparent surface of a building. The first optical terminal includes a first fiber port configured to receive a first optical fiber and an output lens optically coupled to the first fiber port. The first fiber port is configured to route the optical signal from the external network to first optical terminal. The method also includes directing the optical signal through an optical link extending through the substantially transparent surface to a second optical terminal affixed to an interior side of the substantially transparent surface. The second optical terminal includes an input lens and a second fiber port optically coupled to the input lens. The input lens is configured to receive the optical signal from the first optical terminal through the optical link.
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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：US10243687B2
公开(公告)日：2019-03-26
申请号：US15354811
申请日：2016-11-17
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Cedric Fung Lam , Shuang Yin , Changhong Joy Jiang , Ke Dong
Abstract: A method of establishing communication between an optical line terminal and an optical network unit within an optical access network includes receiving a signal indication from an optical transceiver of an optical line terminal. The signal indication includes: (i) a loss-of-signal indication indicating non-receipt of an upstream optical signal from the optical network unit; or (ii) a signal-received indication indicating receipt of the upstream optical signal from the optical network unit. The method includes determining whether the signal indication includes the loss-of-signal indication. When the signal indication includes the loss-of-signal indication, the method includes instructing the optical transceiver to cease signal transmission from the optical transceiver to the optical network unit. Moreover, when the signal indication includes the signal-received indication, the method includes instructing the optical transceiver to transmit a downstream optical signal from the optical transceiver to the optical network unit.
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Patent Agency Ranking
公开(公告)号：US10103513B1
公开(公告)日：2018-10-16
申请号：US15631594
申请日：2017-06-23
Applicant: Google Inc.
Inventor： Tao Zhang , Liang Du , Xiangjun Zhao , Changhong Joy Jiang , Cedric Fung Lam , Shuang Yin , Adam Edwin Taylor Barratt
Abstract: A method for biasing a tunable laser during burst-on and burst-off states through a common-cathode laser driving circuit includes delivering a bias current to an anode of a gain-section diode having a shared substrate with the laser, and receiving a burst mode signal indicative of a burst-on state or a burst-off state. When the burst mode signal is indicative of the burst-off state, the method includes sinking a sink current away from the anode of the gain-section diode. The sink current is less than the bias current delivered to the anode of the gain-section diode. When the burst mode signal transitions to be indicative of the burst-on state from the burst-off state, the method includes ceasing the sinking of the sink current away from the anode of the gain-section diode, and delivering an overshoot current to the anode of the gain-section diode to accelerate heating of the gain-section diode.
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公开(公告)号：US10018799B2
公开(公告)日：2018-07-10
申请号：US15371577
申请日：2016-12-07
Applicant: Google Inc.
Inventor： Changzhan Gu , Changhong Joy Jiang , Zhibin Zhang , Jian Ho
CPC classification number: G02B6/4466 , G02B6/32 , H02J7/025 , H02J50/10 , H04B10/11 , H04B10/114 , H04B10/25 , H04B10/27
Abstract: A method includes receiving an optical signal from an external network at a first optical terminal affixed to an external side of a substantially transparent surface of a building. The first optical terminal includes a first fiber port configured to receive a first optical fiber and an output lens optically coupled to the first fiber port. The first fiber port is configured to route the optical signal from the external network to first optical terminal. The method also includes directing the optical signal through an optical link extending through the substantially transparent surface to a second optical terminal affixed to an interior side of the substantially transparent surface. The second optical terminal includes an input lens and a second fiber port optically coupled to the input lens. The input lens is configured to receive the optical signal from the first optical terminal through the optical link.
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公开(公告)号：US20180139006A1
公开(公告)日：2018-05-17
申请号：US15354811
申请日：2016-11-17
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Cedric Fung Lam , Shuang Yin , Changhong Joy Jiang , Ke Dong
CPC classification number: H04J14/0295 , H04J14/0246 , H04J14/0249 , H04J2014/0253 , H04Q11/0067 , H04Q2011/0081 , H04Q2011/0083
Abstract: A method of establishing communication between an optical line terminal and an optical network unit within an optical access network includes receiving a signal indication from an optical transceiver of an optical line terminal. The signal indication includes: (i) a loss-of-signal indication indicating non-receipt of an upstream optical signal from the optical network unit; or (ii) a signal-received indication indicating receipt of the upstream optical signal from the optical network unit. The method includes determining whether the signal indication includes the loss-of-signal indication. When the signal indication includes the loss-of-signal indication, the method includes instructing the optical transceiver to cease signal transmission from the optical transceiver to the optical network unit. Moreover, when the signal indication includes the signal-received indication, the method includes instructing the optical transceiver to transmit a downstream optical signal from the optical transceiver to the optical network unit.
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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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公开(公告)号：US10171199B2
公开(公告)日：2019-01-01
申请号：US15385798
申请日：2016-12-20
Applicant: Google Inc.
Inventor： Xiangjun Zhao , Daoyi Wang , Liang Du , Changhong Joy Jiang , Cedric Fung Lam
IPC: H04B10/27 , H04J14/02 , H04Q11/00 , H04B10/572 , H01S5/0625
Abstract: A system includes a multiplexer having a pass-band and an optical network unit (ONU) optically coupled to the multiplexer. The ONU includes a tunable laser configured to continuously transmit an optical signal to the multiplexer in a burst-on state and a burst-off state. While in the burst-on state, the ONU is configured to tune the tunable laser to transmit the optical signal at a transmit wavelength within the wavelength pass-band of the multiplexer. The multiplexer configured to allow passage therethrough of the optical signal at the transmit wavelength. While in the burst-off state, the ONU is configured to tune the tunable laser to transmit the optical signal at a non-transmit wavelength outside of the wavelength pass-band of the multiplexer. The multiplexer configured to block passage therethrough of the optical signal at the non-transmit wavelength.
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