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    Apparatus and Methods for Scalable Photonic Packet Architectures Using PIC Switches
    11.
    发明申请
    Apparatus and Methods for Scalable Photonic Packet Architectures Using PIC Switches 有权
    使用PIC开关的可扩展光子分组架构的装置和方法

    公开(公告)号：US20150309265A1

    公开(公告)日：2015-10-29

    申请号：US14695970

    申请日：2015-04-24

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hamid Mehrvar ,  Huixiao Ma ,  Eric Bernier

    IPC: G02B6/35 ,  H04Q11/00

    CPC classification number: G02B6/3546 ,  G02B6/3548 ,  G02B6/3556 ,  G02B6/3558 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045 ,  H04Q2011/005 ,  H04Q2011/0054

    Abstract: Embodiments are provided for scalable photonic packet fabric architectures using photonic integrated circuit switches. The architectures use compact size silicon photonic circuits that can be arranged in a combined centralized and distributed manner. In an embodiment, an optical switch structure comprises a plurality of core photonic based switches and a plurality of photonic interface units (PIUs) optically coupled to the core photonic based switches and to a plurality of groups of top-of-rack switches (TORs). Each PIU comprises a N×N silicon photonic (SiP) switch optically coupled to a group of TORs associated with the PIU from the groups of TORs, where N is a number of the TORs in each group. The PIU also comprises a plurality of 1×P SiP switches coupled to the group of TORs associated with the PIU and to the core photonic based switches, where P is a number of the core photonic based switches.

    Abstract translation: 提供了使用光子集成电路开关的可扩展光子分组结构体系结构的实施例。 该体系结构使用紧凑型硅光子电路，可以以集中和分布的方式组合。 在一个实施例中，光开关结构包括多个基于核心光子的开关和多个光子耦合到基于核心光子的开关的光子接口单元（PIU）以及多组顶架开关（TOR）组， 。 每个PIU包括与来自TOR组的PIU相关联的一组TOR光学耦合的N×N硅光子（SiP）开关，其中N是每组中的TOR的数量。 PIU还包括耦合到与PIU相关联的一组TOR的多个1×P SiP开关和基于核心光子的开关，其中P是基于核心光子的开关的数量。

    Method and apparatus for control of optical phase shifters in an optical device
    12.
    发明授权
    Method and apparatus for control of optical phase shifters in an optical device 有权

    公开(公告)号：US11480844B2

    公开(公告)日：2022-10-25

    申请号：US16921096

    申请日：2020-07-06

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Dritan Celo ,  Chunhui Zhang ,  Dominic John Goodwill ,  Eric Bernier

    IPC: G02F1/225 ,  G02F1/01 ,  G02F1/31

    Abstract: A method and apparatus is provided for control of plural optical phase shifters in an optical device, such as a Mach-Zehnder Interferometer switch. Drive signal magnitude is set using a level setting input and is used for operating both phase shifters, which may have similar characteristics due to co-location and co-manufacture. A device state control signal selects which of the phase shifters receives the drive signal. One or more switches may be used to route the drive signal to the selected phase shifter. Separate level control circuits and state control circuits operating at different speeds may be employed. When the phase shifters are asymmetrically conducting (e.g. carrier injection) phase shifters, a bi-polar drive circuit can be employed. In this case, the phase shifters can be connected in reverse-parallel, and the drive signal polarity can be switchably reversed in order to drive a selected one of the phase shifters.

    System and method for steering packet streams
    14.
    发明授权
    System and method for steering packet streams 有权

    公开(公告)号：US10015111B2

    公开(公告)日：2018-07-03

    申请号：US13902008

    申请日：2013-05-24

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Alan Frank Graves ,  Peter Ashwood-Smith ,  Eric Bernier ,  Dominic John Goodwill

    IPC: H04L12/933 ,  H04Q11/00

    CPC classification number: H04L49/10 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0039 ,  H04Q2011/0064

    Abstract: In one embodiment, a system for steering an input packet stream includes a traffic splitter configured to split an input packet stream into a first packet stream and a second packet stream, and a photonic switching fabric coupled to the traffic splitter, where the photonic switching fabric is configured to switch the first packet stream. The system may also include an electrical packet switching fabric coupled to the traffic splitter, where the electrical packet switching fabric is configured to switch the second packet stream, and a traffic combiner coupled to the photonic switching fabric and to the electrical packet switching fabric, where the traffic combiner is configured to merge the first switched packet stream and the second switched packet stream to produce a first packet flow.

    Method for crosstalk and power optimization in silicon photonic based switch matrices
    17.
    发明授权
    Method for crosstalk and power optimization in silicon photonic based switch matrices 有权
    基于硅光子的开关矩阵中的串扰和功率优化方法

    公开(公告)号：US09491120B2

    公开(公告)日：2016-11-08

    申请号：US14018273

    申请日：2013-09-04

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hamid Mehrvar ,  Yi Qian ,  Patrick Dumais ,  Dominic John Goodwill ,  Eric Bernier

    IPC: H04J1/12 ,  H04L12/947 ,  H04Q11/00

    CPC classification number: H04L49/25 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0054

    Abstract: Crosstalk can be suppressed in photonic switching fabrics by activating unused photonic elements in a manner that manipulates the inactive connections and inhibits the propagation of cross-talk over the switching fabric. For example, unused photonic elements can be set to a cross or bar configuration to block first and second order crosstalk from propagating to the output ports, thereby reducing noise in the output signals. All of the unused elements can be activated in order to maximize crosstalk suppression. Alternatively, fewer than all of the unused elements may be activated to achieve a balance between crosstalk suppression and power conservation. Photonic switch architectures can be configured to use pre-determined cross-talk suppression maps (e.g., patterns of activated unused cells) for the various switching configurations, which may be computed using a recursive algorithm.

    Abstract translation: 通过激活未使用的光子元件，可以通过操纵无效连接并抑制交换结构上的串扰传播的方式来抑制光交换结构中的串扰。 例如，未使用的光子元件可以设置为交叉或条形配置，以阻止第一和第二级串扰从传播到输出端口，从而降低输出信号中的噪声。 可以激活所有未使用的元件，以最大化串扰抑制。 或者，可以激活少于所有未使用的元件以实现串扰抑制和功率节省之间的平衡。 光子开关架构可以被配置为使用可以使用递归算法计算的各种切换配置的预定串扰抑制映射（例如，激活的未使用小区的模式）。

    System and method for photonic switching
    18.
    发明授权
    System and method for photonic switching 有权
    光子切换的系统和方法

    公开(公告)号：US09462359B2

    公开(公告)日：2016-10-04

    申请号：US14516211

    申请日：2014-10-16

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hamid Mehrvar ,  Eric Bernier

    IPC: H04Q11/00

    CPC classification number: H04Q11/0062 ,  H04Q11/0005 ,  H04Q11/0066 ,  H04Q2011/0073 ,  H04Q2011/0092

    Abstract: In one embodiment, optical node includes an input port configured to receive an input optical frame and a first optical switch coupled to the input port, where the first optical switch is configured to remove the input optical frame to produce a removed input optical frame when an address of the input optical frame is a node address of the optical node and to pass the input optical frame to a second optical switch when an address of the input optical frame differs from the address of the optical node. The optical node also includes the second optical switch coupled to the first optical switch, where the second optical switch is configured to output the input optical frame to an output port when the address of the input optical frame is not the node address of the optical node and the address of the input optical frame is not an empty address.

    Abstract translation: 在一个实施例中，光节点包括被配置为接收输入光学帧的输入端口和耦合到输入端口的第一光学开关，其中第一光学开关被配置为去除输入光学帧以产生去除的输入光学框架，当 输入光帧的地址是光节点的节点地址，并且当输入光帧的地址与光节点的地址不同时，将输入光帧传递到第二光开关。 光节点还包括耦合到第一光开关的第二光开关，其中第二光开关被配置为当输入光帧的地址不是光节点的节点地址时将输入光帧输出到输出端口 并且输入光学帧的地址不是空地址。

    Optical coupling using a vernier scale
    19.
    发明授权
    Optical coupling using a vernier scale 有权
    光学耦合使用游标刻度

    公开(公告)号：US09316800B1

    公开(公告)日：2016-04-19

    申请号：US14712147

    申请日：2015-05-14

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Dritan Celo ,  Dominic John Goodwill ,  Eric Bernier

    IPC: G02B6/36 ,  G02B6/42 ,  G02B6/122

    CPC classification number: G02B6/4225 ,  G02B6/4249

    Abstract: An apparatus comprising a plurality of alignment couplers, wherein the alignment couplers are equally spaced a first length apart from each other along a first surface, a plurality of photodetectors optically coupled to the plurality of alignment couplers, a memory, and a processor coupled to the photodetectors and the memory, wherein the memory comprises computer executable instructions stored in a non-transitory computer readable medium that when executed by the processor cause the processor to receive an electrical signal in response to at least one of the photodetectors detecting a first light, and determine an edge coupling alignment based on the electrical signal, wherein the edge coupling alignment is aligned when the electrical signal indicates two photodetectors of the plurality of photodetectors detect the first light, and wherein the edge coupling alignment is misaligned when the electrical signal indicates only one photodetector of the plurality of photodetectors detects the first light.

    Abstract translation: 一种包括多个对准耦合器的装置，其中所述对准耦合器沿着第一表面彼此间隔开第一长度，多个光电检测器光学耦合到所述多个对准耦合器，存储器和耦合到所述多个对准耦合器的处理器 光电检测器和存储器，其中存储器包括存储在非暂时计算机可读介质中的计算机可执行指令，当由处理器执行时，处理器响应于至少一个检测到第一光的光电检测器接收电信号，以及 基于所述电信号确定边缘耦合对准，其中当所述电信号指示所述多个光电检测器中的两个光电检测器检测到所述第一光时，所述边缘耦合对准被对准，并且其中当所述电信号仅指示一个时，所述边缘耦合对准不对准 多个光电探测器的光检测器检测th e第一盏灯。

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