公开(公告)号：US09798084B2

公开(公告)日：2017-10-24

申请号：US15354643

申请日：2016-11-17

Applicant: Google Inc.

Inventor： Lieven Verslegers ,  Ryohei Urata

IPC: G02B6/124 ,  G02B6/126 ,  G02B6/27 ,  G02B6/30 ,  G02B6/34 ,  G02B6/12

CPC classification number: G02B6/124 ,  G02B6/12 ,  G02B6/126 ,  G02B6/2706 ,  G02B6/2773 ,  G02B6/30 ,  G02B6/34 ,  G02B2006/12061 ,  G02B2006/12104

Abstract: This disclosure provides systems, methods, and apparatus for a photonic chip. The photonic chip includes one or more electronic components in addition to one or more optical components. An optical coupler can be utilized for coupling external optical fibers or sources with the optical components. The optical coupler can include a beam splitter for splitting an incident light having both trans-electric (TE) and trans-magnetic (TM) polarizations into two beams having only TE and TM polarizations. The light beam with TM polarization is incident on a grating coupler on the chip having a horn section, which includes gratings. The light beam is reflected onto the grating coupler such that the direction of TM polarization is within the first plane of incidence, and the first beam of light is incident on the first plurality of gratings at an angle with respect to a normal to the plane of the first grating coupler.

公开(公告)号：US20170201330A1

公开(公告)日：2017-07-13

申请号：US14991826

申请日：2016-01-08

Applicant: Google Inc.

Inventor： Xiang Zhou ,  Ryohei Urata ,  Erji Mao ,  Hong Liu ,  Christopher Lyle Johnson

IPC: H04B10/69

CPC classification number: H04B10/6971 ,  H04B10/697

Abstract: This disclosure provides systems, methods, and apparatus for mitigating the effects of interference signals on optical signals received at a direct-detection optical receivers. The optical receivers are capable of attenuating interference noise signals resulting from the interference between a transmitted optical signal transmitted from a transmitter to the optical receiver and one or more additional signals received at the optical receiver. The interference can be due to multi-path interference or due to in-band interference. The receivers include a tunable filter for filtering the received optical signal to remove the interference. A frequency offset module processes the received optical signal to determine a frequency offset indicative of the difference between the carrier frequencies of a modulated optical signal and an interference optical signal. The offset frequency and a bandwidth determined by the frequency offset module can be used to adjust the tunable filter to remove the interference signal from the received signal.

公开(公告)号：US09641254B1

公开(公告)日：2017-05-02

申请号：US14678230

申请日：2015-04-03

Applicant: Google Inc.

Inventor： Zuowei Shen ,  Kyle Fukuchi ,  Melanie Beauchemin ,  Ryohei Urata

IPC: H04B10/40 ,  H05K1/02 ,  B23K26/38 ,  H05K3/00 ,  H05K3/30

CPC classification number: H05K1/0206 ,  B23K26/381 ,  G02B6/00 ,  G02B6/32 ,  G02B6/42 ,  G02B6/4204 ,  G02B6/4246 ,  G02B6/4269 ,  G02B6/428 ,  H01S5/0261 ,  H04B10/40 ,  H04B10/801 ,  H05K1/0274 ,  H05K1/18 ,  H05K3/061 ,  H05K3/32 ,  H05K3/4038 ,  H05K2201/10121 ,  H05K2201/10416

Abstract: The present disclosure discusses an improved optical transceiver. The optical transceiver of the present disclosure includes an optical transmitter and an optical receiver coupled to an area of a printed circuit board that includes a plurality of thermal microvias. The thermal microvias are coupled to a heat sink or other heat dissipater and provide a path from the components of the optical transceiver to the heat dissipater for heat to travel.

公开(公告)号：US09473833B2

公开(公告)日：2016-10-18

申请号：US14986016

申请日：2015-12-31

Applicant: Google Inc.

Inventor： Ryohei Urata ,  Hong Liu ,  Amin Vahdat ,  Christopher Lyle Johnson ,  Junlan Zhou ,  Alexander Shraer

IPC: H04Q11/00 ,  G06F13/40

CPC classification number: H04Q11/0005 ,  G06F13/4022 ,  H04Q11/0062 ,  H04Q2011/0015 ,  H04Q2011/0052 ,  Y02D10/14 ,  Y02D10/151

Abstract: Systems and methods for increasing bandwidth in a computer network are provided. A computer network can include a first lower level switch, first and second upper level switches, and first and second passive optical splitters, and a mirror. The first passive optical splitter can have a first port directly coupled to the first upper level switch, a second port directly coupled to the second upper level switch. The second passive optical splitter can have a port directly coupled to a port of the first passive optical splitter, and a port directly coupled to the first lower level switch. The mirror can be coupled to a port of the second passive optical splitter and reflect an optical signal received from the second passive optical splitter to the first upper level switch and second upper level switch through the second passive optical splitter and the first passive optical splitter.

Abstract translation: 提供了一种用于增加计算机网络带宽的系统和方法。 计算机网络可以包括第一下级开关，第一和第二上级开关以及第一和第二无源分光器以及反射镜。 第一无源分光器可以具有直接耦合到第一上级开关的第一端口，直接耦合到第二上级开关的第二端口。 第二无源光分路器可以具有直接耦合到第一无源分光器的端口的端口，以及直接耦合到第一下级开关的端口。 反射镜可以耦合到第二无源光分路器的端口，并且将从第二无源光分路器接收的光信号反射到通过第二无源分光器和第一无源分光器的第一上级开关和第二上级开关。

公开(公告)号：US09185475B1

公开(公告)日：2015-11-10

申请号：US14519836

申请日：2014-10-21

Applicant: Google Inc.

Inventor： Hong Liu ,  Ryohei Urata ,  Christopher L. Johnson

IPC: H04B10/00 ,  H04Q11/00

CPC classification number: H04Q11/0005 ,  H04B10/801 ,  H04Q2011/0035 ,  H04Q2011/0049 ,  H04Q2213/1301

Abstract: Implementations of an apparatus including an optical circuit switch (OCS) having a plurality of OCS input/output ports, at least one optical circulator having a port optically coupled to a corresponding one of the plurality of OCS input/output ports and a reflection mitigation positioned in the optical path between each optical circulator port and its corresponding OCS input/output port and/or in the optical path inside the OCS. A corresponding optical transceiver is optically coupled to each of the at least one optical circulators. Each optical transceiver includes a transmitter optically coupled to one port of the optical circulator and a receiver optically coupled to another port of the optical circulator.

Abstract translation: 包括具有多个OCS输入/输出端口的光电路开关（OCS）的设备的实施方式，至少一个光环行器，其具有光耦合到多个OCS输入/输出端口中对应的一个OCS输入/输出端口的端口， 在每个光环行器端口与其对应的OCS输入/输出端口之间的光路中和/或OCS内的光路中。 相应的光收发器光耦合到至少一个光循环器中的每一个。 每个光收发器包括光耦合到光循环器的一个端口的发射器和光耦合到光环行器的另一个端口的接收器。

公开(公告)号：US09001852B1

公开(公告)日：2015-04-07

申请号：US14023104

申请日：2013-09-10

Applicant: Google Inc.

Inventor： Ryohei Urata ,  Pedram Zare Dashti ,  Cedric Fung Lam ,  Xiangjun Zhao ,  Hong Liu

IPC: H01S3/10 ,  H01S5/024

CPC classification number: H01S5/02415 ,  H01S5/026 ,  H01S5/0265 ,  H01S5/0612 ,  H01S5/12 ,  H01S5/4031 ,  H01S5/4087

Abstract: The wavelength tunable laser includes a thermo-electric cooler (TEC), a distributed feedback portion, and a semiconductor optical amplifier (SOA). The distributed feedback portion is disposed on the thermo-electric cooler and has a plurality of distributed feedback (DFB) lasers connected in series. Each DFB laser is configured to output an optical signal within a different temperature dependent tunable range of wavelengths. Therefore, the distributed feedback portion outputs an optical signal from one of the DFB lasers. The SOA is optically connected to the distributed feedback portion. The SOA amplifies and modulates the optical signal outputted from the distributed feedback portion.

Abstract translation: 波长可调激光器包括热电冷却器（TEC），分布式反馈部分和半导体光放大器（SOA）。 分布式反馈部分设置在热电冷却器上并且具有串联连接的多个分布式反馈（DFB）激光器。 每个DFB激光器被配置为在不同的温度依赖的可调谐波长范围内输出光信号。 因此，分布式反馈部分输出来自DFB激光器之一的光信号。 SOA与分布式反馈部分光学连接。 SOA放大并调制从分布式反馈部分输出的光信号。

公开(公告)号：US09998235B2

公开(公告)日：2018-06-12

申请号：US14991826

申请日：2016-01-08

Applicant: Google Inc.

Inventor： Xiang Zhou ,  Ryohei Urata ,  Erji Mao ,  Hong Liu ,  Christopher Lyle Johnson

IPC: H04B10/00 ,  H04B10/69

CPC classification number: H04B10/6971 ,  H04B10/697

Abstract: This disclosure provides systems, methods, and apparatus for mitigating the effects of interference signals on optical signals received at a direct-detection optical receivers. The optical receivers are capable of attenuating interference noise signals resulting from the interference between a transmitted optical signal transmitted from a transmitter to the optical receiver and one or more additional signals received at the optical receiver. The interference can be due to multi-path interference or due to in-band interference. The receivers include a tunable filter for filtering the received optical signal to remove the interference. A frequency offset module processes the received optical signal to determine a frequency offset indicative of the difference between the carrier frequencies of a modulated optical signal and an interference optical signal. The offset frequency and a bandwidth determined by the frequency offset module can be used to adjust the tunable filter to remove the interference signal from the received signal.

公开(公告)号：US09391698B1

公开(公告)日：2016-07-12

申请号：US14061503

申请日：2013-10-23

Applicant: Google Inc.

Inventor： Ryohei Urata ,  Nathan Folkner ,  Zuowei Shen

IPC: H04B10/08 ,  H04B10/00 ,  H04B10/077 ,  H04B10/035 ,  H04B10/073

CPC classification number: H04B10/0779 ,  H04B10/035 ,  H04B10/073 ,  H04B10/0799 ,  H04B10/40 ,  H04B2210/08

Abstract: Systems and methods for achieving eye safety of an optical transceiver are provided. An optical module can be configured to output a first optical signal. A first photodetector can be configured to output a signal indicative of a presence or absence of a second optical signal. A controller can be coupled to the optical module and the first photodetector and can be configured to control the output of the optical module. In response to a determination that an output of the first photodetector indicates the second optical signal is absent, the controller can control the optical module to output the first signal at a decreased average optical power. In response to a determination that an output of the first photodetector indicates the second optical signal is present, the controller can control the optical module to output the first signal at an increased average optical power.

Abstract translation: 提供了用于实现光收发器的眼睛安全的系统和方法。 光学模块可以被配置为输出第一光信号。 第一光电检测器可以被配置为输出指示第二光信号的存在或不存在的信号。 控制器可以耦合到光学模块和第一光电检测器，并且可以被配置为控制光学模块的输出。 响应于确定第一光电检测器的输出指示第二光信号不存在，控制器可以控制光模块以平均光功率降低输出第一信号。 响应于第一光电检测器的输出表示第二光信号的确定，控制器可以控制光模块以增加的平均光功率输出第一信号。

公开(公告)号：US20150222969A1

公开(公告)日：2015-08-06

申请号：US14169734

申请日：2014-01-31

Applicant: Google Inc.

Inventor： Ryohei Urata ,  Hong Liu ,  Amin Vahdat ,  Christopher Lyle Johnson ,  Junlan Zhou ,  Alexander Shraer

IPC: H04Q11/00

CPC classification number: H04Q11/0005 ,  G06F13/4022 ,  H04Q11/0062 ,  H04Q2011/0015 ,  H04Q2011/0052 ,  Y02D10/14 ,  Y02D10/151

Abstract: Systems and methods for increasing bandwidth in a computer network are provided. A computer network can include a first lower level switch having a first port and a second port. The computer network can include a second lower level switch having a first port and a second port. The computer network can include an upper level switch having respective ports directly coupled to ports of the first and second lower level switches. A third port of the upper level switch can couple to a first port of a passive optical splitter. The passive optical splitter can have second and third ports coupled to respective ports of the first and second lower level switches. The passive optical splitter can be configured to transmit signals received at its first port as output signals on both of its second and third ports.

Abstract translation: 提供了一种用于增加计算机网络带宽的系统和方法。 计算机网络可以包括具有第一端口和第二端口的第一下级开关。 计算机网络可以包括具有第一端口和第二端口的第二下层开关。 计算机网络可以包括具有直接耦合到第一和第二下级交换机的端口的相应端口的上级交换机。 上级开关的第三端口可以耦合到无源分光器的第一端口。 无源光分路器可以具有耦合到第一和第二下层开关的相应端口的第二和第三端口。 无源光分路器可以被配置为将在其第一端口处接收的信号作为其第二和第三端口两端的输出信号进行发送。

公开(公告)号：US08965203B1

公开(公告)日：2015-02-24

申请号：US13631325

申请日：2012-09-28

Applicant: Google Inc.

Inventor： Amin Vahdat ,  Hong Liu ,  Ryohei Urata ,  Xiaoxue Zhao ,  Chris L. Johnson

IPC: H04J14/00

CPC classification number: H04J14/0282

Abstract: The disclosure describes implementations of an apparatus including a plurality of racks, wherein each rack houses a plurality of networking devices and each networking device includes a communication port. An optical circuit switch can be coupled to each of the plurality of communication ports in one or more of the plurality of racks, and a plurality of top-of-rack (TOR) switches can be coupled to the optical circuit switch. Other implementations are disclosed and claimed.

Abstract translation: 本公开描述了包括多个机架的设备的实现，其中每个机架容纳多个网络设备，并且每个网络设备包括通信端口。 光电路开关可以耦合到多个机架中的一个或多个中的多个通信端口中的每一个，并且多个顶架（TOR）开关可以耦合到光电路开关。 公开并要求保护其他实施方式。