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公开(公告)号：US10527792B2
公开(公告)日：2020-01-07
申请号：US15142434
申请日：2016-04-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais
Abstract: An optical waveguide termination comprising a light-receiving inlet for receiving light to be terminated, a curved section extending from the inlet and having a continuously decreasing radius of curvature, and a light-terminating tip at an end of the curved section. The curved section may define a spiral waveguide, for example a logarithmic spiral, having a waveguide width that continuously decreases from the inlet to the tip.
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公开(公告)号：US10359569B2
公开(公告)日：2019-07-23
申请号：US15149457
申请日：2016-05-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais
Abstract: An optical waveguide termination includes a light-receiving inlet for receiving light to be terminated, a rib waveguide extending from the inlet, a doped, light-absorbing slab supporting the rib waveguide for absorbing light from the rib waveguide, and a tip at an end of the rib waveguide. The optical waveguide termination exhibits low back-reflection.
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3.发明授权公开(公告)号：US09684131B2
公开(公告)日：2017-06-20
申请号：US14245481
申请日：2014-04-04
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais , Eric Bernier
CPC classification number: G02B6/29344 , G02B6/125 , G02B6/2813 , G02B6/4215 , G02F1/3136
Abstract: Embodiments are provided for an improved 2×1 switch cell design with integrated photodiode for off-state monitoring. In an embodiment, am optical switch comprises a 2×1 multi-mode interferometer (MMI) coupler including two input waveguides jointly coupled to an output waveguide, and a photodetector coupled to an edge of a first waveguide of the input waveguides, and positioned next to a side of the output waveguide. In another embodiment, an optical chip comprises two input waveguides parallel to each other, and an output waveguide coupled to the two input waveguides. The optical chip further includes a photodetector coupled to a first waveguide of the two input waveguides, and positioned next to the output waveguide, and a branch waveguide extending from the first waveguide into the photodetector.
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公开(公告)号：US09746617B2
公开(公告)日：2017-08-29
申请号：US14793401
申请日：2015-07-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais
CPC classification number: G02B6/3542 , G02B6/124 , G02B6/126 , G02B6/136 , G02B6/2793 , G02B6/30 , G02B6/305 , G02B6/34 , G02B6/354 , G02B6/3556 , G02B6/3594 , G02B2006/12061 , G02B2006/12107 , G02B2006/12145
Abstract: A photonic integrated circuit (PIC) comprises an optical switch, a plurality of input edge couplers comprising a first input edge coupler and coupled to the optical switch, a plurality of input surface grating couplers (SGCs) comprising a first input SGC and coupled to the optical switch, a plurality of output edge couplers comprising a first output edge coupler and coupled to the optical switch, and a plurality of output SGCs comprising a first output SGC and coupled to the optical switch. A method of fabricating a PIC comprises patterning and etching a silicon substrate to produce a first optical switch, a first surface grating coupler (SGC) coupled to the first optical switch, and a first edge coupler coupled to the first optical switch.
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公开(公告)号：US09638981B2
公开(公告)日：2017-05-02
申请号：US14630093
申请日：2015-02-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais , Lukas Chrostowski
CPC classification number: G02F1/2257 , G02F2001/0152 , G02F2001/212 , G02F2203/60
Abstract: An optical device comprises a first optical coupler configured to receive a light signal and provide a first output and a second output, a first optical waveguide in optical communication with the first output and configured to provide a first optical path for a first portion of the light signal, and a second optical waveguide in optical communication with the second output and configured to provide a second optical path for a second portion of the light signal, wherein the first optical waveguide is configured to provide a phase differential between the first optical path and the second optical path, wherein the second optical waveguide is positioned according to a lateral thermal diffusion length associated with the first optical waveguide, and wherein the lateral thermal diffusion length is a spreading distance of a thermal effect in a direction about perpendicular to the first optical path.
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Patent Agency Ranking
6.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）。
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公开(公告)号：US09400354B2
公开(公告)日：2016-07-26
申请号：US14535170
申请日：2014-11-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais
CPC classification number: G02B6/126 , G02B6/107 , G02B6/14 , G02B6/2766 , G02B2006/12152
Abstract: An embodiment waveguide polarization rotator includes an optical waveguide and an overlay strip. The optical waveguide has an input end and an output end oppositely disposed thereon. The optical waveguide is operable to receive, at the input end, an input optical signal having a mode having an input polarization. The optical waveguide is further operable to generate, at the output end, an output optical signal having an output polarization orthogonal to the input polarization. The overlay strip is disposed over and non-orthogonally crosses the optical waveguide. The overlay strip has a first end laterally offset from the optical waveguide by a first offset distance and a second end laterally offset from the optical waveguide by a second offset distance.
Abstract translation: 一种实施例的波导偏振旋转器包括光波导和覆盖条。 光波导具有相对设置在其上的输入端和输出端。 光波导可操作以在输入端接收具有具有输入偏振的模式的输入光信号。 光波导还可操作以在输出端产生具有与输入偏振正交的输出偏振的输出光信号。 覆盖条被布置在非正交的光波导上。 覆盖带具有从光波导横向偏移第一偏移距离的第一端和从光波导横向偏移第二偏移距离的第二端。
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公开(公告)号：US20170010414A1
公开(公告)日：2017-01-12
申请号：US14793401
申请日：2015-07-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Patrick Dumais
CPC classification number: G02B6/3542 , G02B6/124 , G02B6/126 , G02B6/136 , G02B6/2793 , G02B6/30 , G02B6/305 , G02B6/34 , G02B6/354 , G02B6/3556 , G02B6/3594 , G02B2006/12061 , G02B2006/12107 , G02B2006/12145
Abstract: A photonic integrated circuit (PIC) comprises an optical switch, a plurality of input edge couplers comprising a first input edge coupler and coupled to the optical switch, a plurality of input surface grating couplers (SGCs) comprising a first input SGC and coupled to the optical switch, a plurality of output edge couplers comprising a first output edge coupler and coupled to the optical switch, and a plurality of output SGCs comprising a first output SGC and coupled to the optical switch. A method of fabricating a PIC comprises patterning and etching a silicon substrate to produce a first optical switch, a first surface grating coupler (SGC) coupled to the first optical switch, and a first edge coupler coupled to the first optical switch.
Abstract translation: 光子集成电路（PIC）包括光开关，多个输入边耦合器，包括第一输入边耦合器并耦合到光开关;多个输入表面光栅耦合器（SGC），包括第一输入SGC并耦合到 光开关，包括第一输出边缘耦合器并耦合到光开关的多个输出边耦合器，以及包括第一输出SGC并耦合到光开关的多个输出SGC。 制造PIC的方法包括图案化和蚀刻硅衬底以产生第一光开关，耦合到第一光开关的第一表面光栅耦合器（SGC）和耦合到第一光开关的第一边缘耦合器。
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公开(公告)号：US20160334575A1
公开(公告)日：2016-11-17
申请号：US14710272
申请日：2015-05-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Alan Frank Graves , Dominic John Goodwill , Patrick Dumais
IPC: G02B6/126
CPC classification number: G02B6/126 , G02B6/2793 , G02B6/3546 , G02B2006/12145 , H04Q3/526
Abstract: A method for photonic device includes an optical macromodule substrate including optical interconnects and a first photonic integrated circuit (PIC) including a first photonic switch, where the first PIC is mechanically coupled to the optical macromodule substrate and optically coupled to the optical interconnect. The photonic device also includes a PIC controller electrically coupled to the first PIC.
Abstract translation: 一种用于光子器件的方法包括包括光学互连的光学大块模块衬底和包括第一光子开关的第一光子集成电路（PIC），其中第一PIC被机械耦合到光学大型模块衬底并且光学耦合到光学互连。 光子器件还包括电耦合到第一PIC的PIC控制器。
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10.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：US09456260B2
公开(公告)日：2016-09-27
申请号：US14530192
申请日：2014-10-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hamid Mehrvar , Yi Qian , Patrick Dumais , Dominic John Goodwill , Eric Bernier
IPC: H04J1/12 , H04Q11/00 , H04L12/947 , H04L12/931
CPC classification number: H04Q11/0005 , H04L49/25 , H04L49/40 , H04Q2011/0049
Abstract: Recursive optimization algorithms can be used to determine which idle photonic switching elements to configure in N×N switching fabrics to achieve crosstalk suppression. Different algorithms are used to achieve different levels of optimization. Embodiment full optimization techniques may configure all inactive cells to reduce crosstalk, and consequently may provide the best noise performance and highest power usage. Partial optimizations may configure fewer than all inactive cells to reduce crosstalk, and may provide sub-optimal noise performance at lower power usages. Differential partial optimization algorithms configure inactive cells in different stages of a photonic switching fabric. Fewer than all cells in a given stage may be configured by some algorithms.
Abstract translation: 可以使用递归优化算法来确定在N×N个交换结构中配置的空闲光子交换元件以实现串扰抑制。 使用不同的算法来实现不同级别的优化。 实施例的全优化技术可以配置所有非活动单元以减少串扰，从而可以提供最佳的噪声性能和最高功率使用。 部分优化可以配置少于所有非活动单元以减少串扰，并且可以在较低功率使用下提供次优的噪声性能。 差分部分优化算法在光子交换结构的不同阶段配置非活动单元。 可以通过一些算法来配置给定阶段中的所有单元。
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