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公开(公告)号：US10025047B1
公开(公告)日：2018-07-17
申请号：US15488237
申请日：2017-04-14
Applicant: Google Inc.
Inventor： Hong Liu , Ryohei Urata , Woon Seong Kwon , Teckgyu Kang
Abstract: Signal integrity in high-speed applications is dependent on both the underlying device performance and electronic packaging methods. The maturity of chip-on-board (COB) packaging technology using wire bonding makes it a cost beneficial option for the mass production of high-speed optical transceivers. However, wire bonding introduces parasitic inductance associated with the length of the bond wires that limits the scalability of the system for higher data throughput. A high-speed optical transceiver package according to a first proposed configuration minimizes packaging related parasitic inductance by vertically integrating components using flip-chip bonding. A high-speed optical transceiver package according to a second proposed configuration minimizes packaging related parasitic inductance with horizontal tiling of components using a chip carrier and flip-chip bonding.
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公开(公告)号：US20170153391A1
公开(公告)日：2017-06-01
申请号：US15354655
申请日：2016-11-17
Applicant: Google Inc.
Inventor： Lieven Verslegers , Ryohei Urata , Hong Liu
CPC classification number: G02B6/124 , G02B6/12 , G02B6/126 , G02B6/30 , G02B6/34 , G02B6/4246 , G02B2006/12102 , G02B2006/12121 , G02B2006/12142 , G02B2006/12147 , G02B2006/12164 , H04B10/2504 , H04B10/40
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. Grating couplers can be utilized for coupling light incident from an optical fibers or lasers with the optical components on the photonic chip. The grating couplers can be designed to have a wide bandwidth to support applications such as wave division multiplexing (WDM). The wide bandwidth can be achieved by reducing a mode field diameter (MFD) of the light beams incident on the grating couplers, and selecting a beam size of the optical couplers to be substantially equal to MFD. The bandwidth can be further improved by using thin silicon layer for fabricating the ridges of the grating coupler. Grating couplers with relatively large beam sizes can be utilized for coupling light output by lasers with the optical components on the chip.
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3.发明授权Systems and methods for reducing temperature in an optical signal source co-packaged with a driver 有权用于降低与驱动器共同打包的光信号源中的温度的系统和方法公开(公告)号：US09379819B1
公开(公告)日：2016-06-28
申请号：US14147134
申请日：2014-01-03
Applicant: Google Inc.
Inventor： Erji Mao , Hong Liu , Ryohei Urata , Melanie Beauchemin
CPC classification number: H04B10/501 , G02B6/4246 , G02B6/4273 , H01L2224/48091 , H01L2224/48137 , H01L2224/49109 , H04B10/40 , H01L2924/00014
Abstract: Systems and methods for reducing temperature of an optical signal source co-packaged with a driver are provided. An optical transmitter can include a housing. The optical transmitter can include an optical signal source positioned within the housing. The optical transmitter can include a signal source driver positioned within the housing and configured to control an output of the optical signal source. The optical transmitter can include a substrate mounted on an interior surface of the housing and having a microwave waveguide coupled to it. The microwave waveguide can be configured to direct electrical signals originating outside the housing to the signal source driver. The substrate is can also be configured to limit heat transfer from the signal source driver to the optical signal source.
Abstract translation: 提供了用于降低与驱动器共同打包的光信号源的温度的系统和方法。 光发射机可以包括壳体。 光发射机可以包括位于壳体内的光信号源。 光发射机可以包括定位在壳体内并被配置为控制光信号源的输出的信号源驱动器。 光学发射器可以包括安装在壳体的内表面上并具有耦合到其上的微波波导的衬底。 微波波导可以被配置为将从壳体外部产生的电信号引导到信号源驱动器。 衬底也可以被配置为限制从信号源驱动器到光信号源的热传递。
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公开(公告)号：US09247326B2
公开(公告)日：2016-01-26
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
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。
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公开(公告)号：US08806244B1
公开(公告)日：2014-08-12
申请号：US14084054
申请日：2013-11-19
Applicant: Google Inc.
Inventor： Dennis Charles Abts , Peter Michael Klausler , Hong Liu , Michael Marty , Philip Michael Wells
IPC: G06F1/32
CPC classification number: G06F1/3253 , H04L41/0833 , H04L43/0882 , H04L69/14 , Y02D10/151 , Y02D50/30
Abstract: Energy proportional solutions are provided for computer networks such as datacenters. Congestion sensing heuristics are used to adaptively route traffic across links. Traffic intensity is sensed and links are dynamically activated as they are needed. As the offered load is decreased, the lower channel utilization is sensed and the link speed is reduced to save power. Flattened butterfly topologies can be used in a further power saving approach. Switch mechanisms are exploit the topology's capabilities by reconfiguring link speeds on-the-fly to match bandwidth and power with the traffic demand. For instance, the system may estimate the future bandwidth needs of each link and reconfigure its data rate to meet those requirements while consuming less power. In one configuration, a mechanism is provided where the switch tracks the utilization of each of its links over an epoch, and then makes an adjustment at the end of the epoch.
Abstract translation: 为诸如数据中心的计算机网络提供能量比例解决方案。 拥塞感知启发式用于自适应地跨链路路由流量。 检测到交通强度，并根据需要动态激活链路。 随着提供的负载减小，感测到较低的信道利用率，并且减少链路速度以节省功率。 扁平蝶形拓扑可以用于进一步节能方法。 交换机制通过重新配置链路速度来快速利用拓扑的功能，以匹配带宽和功率与流量需求。 例如，系统可以估计每个链路的未来带宽需求，并重新配置其数据速率以满足这些要求，同时消耗更少的功率。 在一种配置中，提供了一种机制，其中开关在历元上跟踪其每个链接的利用率，然后在时代结束时进行调整。
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Patent Agency Ranking
公开(公告)号：US20180003903A1
公开(公告)日：2018-01-04
申请号：US15196669
申请日：2016-06-29
Applicant: Google Inc.
Inventor： Jamyuen Ko , Hong Liu , Ryohei Urata , Zuowei Shen
CPC classification number: G02B6/3881 , G02B6/32 , G02B6/381 , G02B6/3821 , G02B6/3838 , G02B6/3839 , G02B6/3853 , G02B6/3861 , G02B6/387 , G02B6/3885 , G02B6/3887 , G02B6/3893 , G02B6/3897
Abstract: An optical connector assembly includes a spring, a ferrule, a first housing, and a second housing connected to the first housing. The ferrule includes a ferrule body and a lens. The ferrule body defines a fiber receiver configured to receive optical fibers of an optical cable and a first spring receiver configured to receive the spring. The lens is arranged to optically communicate light propagated by the received optical fibers for free-space optical communication. The first housing defines a first opening configured to slidably receive and guide the ferrule for movement along a first longitudinal axis. The second housing defines a second opening configured to receive the optical cable therethrough along a second longitudinal axis, and a second spring receiver configured to receive the spring. The spring biases movement of the ferrule in the first housing away from the second housing.
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7.发明授权Systems and methods for adaptive energy utilization of optical interconnection networks 有权光互连网络自适应能量利用的系统和方法公开(公告)号：US09331780B1
公开(公告)日：2016-05-03
申请号：US14274758
申请日：2014-05-11
Applicant: Google Inc.
Inventor： Xiang Zhou , Hong Liu
CPC classification number: H04B10/25 , H04B10/0775 , H04B10/27
Abstract: This disclosure provides systems, methods, and apparatus for an energy efficient communication system. The communication system can include a transmitter, a receiver and a communication link for communicating data between the transmitter and the receiver. In some implementations, the receiver determines a signal quality parameter (SQP) value of the received data, and communicates the SQP value to the transmitter. In some implementations, the transmitter adjusts one or more operational parameters of the transmitter to reduce power based on the received SQP value being less than a threshold value. In some implementations, the receiver also adjusts one or more operational parameters of the receiver based on the SQP value being less than a threshold value. In some implementations, the receiver can communicate the SQP value to the transmitter over out-of-band communication links.
Abstract translation: 本公开提供了一种用于节能通信系统的系统，方法和装置。 通信系统可以包括用于在发射机和接收机之间传送数据的发射机，接收机和通信链路。 在一些实现中，接收机确定接收数据的信号质量参数（SQP）值，并将SQP值传送给发射机。 在一些实施方案中，发射机调整发射机的一个或多个操作参数，以便基于所接收的SQP值小于阈值来降低功率。 在一些实现中，接收机还基于SQP值小于阈值来调整接收机的一个或多个操作参数。 在一些实现中，接收机可以通过带外通信链路将SQP值传送到发射机。
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8.发明授权公开(公告)号：US09210487B1
公开(公告)日：2015-12-08
申请号：US14644797
申请日：2015-03-11
Applicant: Google Inc.
Inventor： Xiaoxue Zhao , Amin Vahdat , Hong Liu
CPC classification number: H04Q11/0005 , H04L49/1515 , H04Q2011/0007 , H04Q2011/0024
Abstract: Embodiments provide a methodology for designing a large-scale non-blocking OCS using a multi-stage folded CLOS switch architecture for use in datacenter networks and fiber-rich backbone network POPs. One aspect employs a folded CLOS architecture because of its ease of implementation, enabling the topology to scale arbitrarily with increasing number of stages. The fraction of ports allocated for internal switch wiring (overhead) also increases with the number of stages. Design decisions are made to carefully optimize the insertion loss per module, number of ports per module, number of stages and the total scale required. Other embodiments include folded CLOS switch architectures having at least two stages. In one example, power monitoring may be included only on the leaf switches.
Abstract translation: 实施例提供了一种使用多阶段折叠CLOS交换机架构设计大规模非阻塞OCS的方法，用于数据中心网络和富含纤维的骨干网POP。 一个方面采用折叠式CLOS架构，因为其易于实现，使得拓扑结构随着阶段数量的增加而任意扩展。 分配给内部开关布线（开销）的端口的分数也随着级数的增加而增加。 进行设计决策，仔细优化每个模块的插入损耗，每个模块的端口数量，级数和所需的总尺寸。 其他实施例包括具有至少两个阶段的折叠CLOS开关架构。 在一个示例中，功率监视可以仅包括在叶片开关上。
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公开(公告)号：US08917992B1
公开(公告)日：2014-12-23
申请号：US13732863
申请日：2013-01-02
Applicant: Google Inc.
Inventor： Cedric Fung Lam , Ben Warren Segura , Ryohei Urata , Pedram Zare Dashti , Hong Liu
IPC: H04J14/02
CPC classification number: H04J14/0246 , H04J14/0239
Abstract: An optical network remote node includes first and second node inputs, each receiving a multiplexed optical signal, and node outputs, each outputting a separate demultiplexed optical signal. The node includes first and second optical power splitters, each having a splitter input connected to one of the node inputs and splitter outputs connected to corresponding node outputs. The node includes an arrayed waveguide grating having first and second grating inputs connected to the first and second node inputs, respectively, and grating outputs connected to the corresponding node outputs. If the received signal at one of the node inputs is time division multiplexed, the corresponding connected optical power splitter broadcasts the received optical signal at the node outputs. If the received signal at one of the node inputs is wavelength division multiplexed, the arrayed waveguide grating demultiplexes the received optical signals in wavelength and outputs the demultiplexed signals at the node outputs.
Abstract translation: 光网络远程节点包括每个接收多路复用光信号的第一和第二节点输入以及每个输出单独解复用的光信号的节点输出。 该节点包括第一和第二光功率分配器，每个具有连接到节点输入之一的分离器输入和连接到相应节点输出的分路器输出。 节点包括阵列波导光栅，其具有分别连接到第一和第二节点输入的第一和第二光栅输入以及连接到相应节点输出的光栅输出。 如果在其中一个节点输入端的接收信号被时分多路复用，则对应连接的光功率分配器在节点输出处广播所接收的光信号。 如果在其中一个节点输入端的接收信号是波分复用的，阵列波导光栅将接收到的波长的光信号解复用，并在节点输出端输出解复用的信号。
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10.发明授权公开(公告)号：US08909064B2
公开(公告)日：2014-12-09
申请号：US14250969
申请日：2014-04-11
Applicant: Google Inc.
Inventor： Bikash Koley , Vijayanand Vusirikala , Hong Liu
CPC classification number: H04Q11/0005 , H04B10/5051 , H04B10/5053 , H04B10/5161 , H04B10/541 , H04B10/5561 , H04J3/04 , H04J3/0602 , H04J3/0685 , H04J14/0279 , H04J14/0298 , H04J14/06 , H04L27/34 , H04L27/36 , H04Q2011/0045 , H04Q2213/13361
Abstract: Aspects of the invention provide transmitters and receivers for managing multiple optical signals. High order modulation, such as phase and/or amplitude modulation, is used to achieve multiple bits per symbol by transporting multiple asynchronous data streams in an optical transport system. One or more supplemental multiplexing techniques such as time division multiplexing, polarization multiplexing and sub-carrier multiplexing may be used in conjunction with the high order modulation processing. This may be done in various combinations to realize a highly spectrally efficient multi-data stream transport mechanism. The system receives a number of asynchronous signals which are unframed and synchronized, and then reframed and tagged prior to the high order modulation. Differential encoding may also be performed. Upon reception of the multiplexed optical signal, the receiver circuitry may employ either direct detection without a local oscillator or coherent detection with a local oscillator.
Abstract translation: 本发明的各方面提供用于管理多个光信号的发射机和接收机。 高阶调制（例如相位和/或幅度调制）用于通过在光学传输系统中传送多个异步数据流来实现每个符号的多个位。 可以结合高阶调制处理使用一个或多个补充复用技术，例如时分复用，偏振复用和副载波复用。 这可以以各种组合来实现，以实现高频谱效率的多数据流传输机制。 系统接收多个异步信号，这些异步信号是非帧和同步的，然后在高阶调制之前被重构和标记。 还可以执行差分编码。 在接收到复用的光信号时，接收机电路可以采用无本地振荡器的直接检测或与本地振荡器的相干检测。
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