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公开(公告)号：US20210135763A1
公开(公告)日：2021-05-06
申请号：US17150661
申请日：2021-01-15
Applicant: Huawei Technologies Co., Ltd.
IPC: H04B10/572 , H04B10/079 , H04B10/548 , H04B10/50 , H04B10/077
Abstract: A frequency offset processing method, apparatus, and a storage medium, where the method includes: determining a frequency offset of a preset channel in a wavelength selective switch (WSS); determining a correspondence between a frequency offset and a wavelength or a correspondence between a frequency offset and a pixel position based on the frequency offset of the preset channel; and determining a frequency offset of a traffic channel according to the determined correspondence.
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公开(公告)号：US09762983B2
公开(公告)日：2017-09-12
申请号：US15043828
申请日：2016-02-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Han Zhao , Liangjia Zong
CPC classification number: H04Q11/0005 , G02B6/2706 , G02B6/29373 , G02B6/2938 , G02B6/32 , G02B6/34 , G02B6/35 , G02B6/3512 , G02B6/352 , G02B6/3546 , G02B6/356 , H04J14/02 , H04Q2011/0016 , H04Q2011/0026
Abstract: A wavelength selective switch includes: N input ports, an input-side fiber array, an input-side collimator array, an input-side beam deformation and polarization conversion component, an input-side wave-demultiplexing component, an input-side switching engine, a focusing transformation lens group, an output-side switching engine, an output-side wave-combining component, an output-side beam deformation and polarization conversion component, an output-side collimator array, an output-side fiber array, and M output ports. The focusing transformation lens group includes two identical aspheric convex lenses that are placed in parallel, where a curvature from a center to an edge of a surface of the aspheric convex lens changes continuously. A spatial position of the focusing transformation lens group and the curvature from the center to the edge of the surface are so set that light with different wavelengths from the input-side switching engine is focused to a corresponding position of the output-side switching engine respectively.
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公开(公告)号：US09641917B2
公开(公告)日：2017-05-02
申请号：US15331268
申请日：2016-10-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunfei Yan , Zhiyong Feng , Han Zhao , Liangjia Zong
IPC: H04J14/00 , H04J14/02 , H04B10/24 , G02B6/28 , G02B6/42 , G02B6/26 , H04Q11/00 , G02B6/293 , G02B6/27
CPC classification number: H04Q11/0062 , G02B6/266 , G02B6/2713 , G02B6/2931 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/0037 , H04Q2011/0052 , H04Q2011/009
Abstract: Embodiments of the present invention provide an optical communications apparatus, where the apparatus includes: an input system, a first optical switch array, and an output system, where the input system includes N input ports that are one-dimensionally arranged on a first plane, a first beam expander, a demultiplexer, and a first optical path changer; the first optical switch array includes N×K first optical switch units that are two-dimensionally arranged on a second plane, and the first optical switch units can rotate in a first axial line direction and a second axial line direction; and the output system includes a second optical path changer, a second beam expander, a second optical switch array, and M output ports that are two-dimensionally arranged.
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4.发明公开公开(公告)号：US20240056707A1
公开(公告)日：2024-02-15
申请号：US18496414
申请日：2023-10-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Han Zhao , Liangjia Zong , Zeshan Chang
CPC classification number: H04Q11/0005 , G02B6/293 , H04Q2011/0015
Abstract: Embodiments of the present invention provide an optical switching apparatus, an optical switching method, an optical switching node, and a system, to implement switching of optical signals in more transmission directions. The optical switching apparatus includes input ports, a first dispersion member, a first switching engine, a first beam combining member, a first lens group, a second dispersion member, a second beam combining member, a second switching engine, and output ports. The first switching engine and the second switching engine jointly change transmission directions of sub-wavelength light beams along a wavelength plane and a port plane, the wavelength plane and the port plane are perpendicular to each other, and both the wavelength plane and the port plane are parallel to transmission directions of first light beams.
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公开(公告)号：US11372163B2
公开(公告)日：2022-06-28
申请号：US17163454
申请日：2021-01-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: A wavelength switching apparatus includes M input components, a first optical component, a first switch array, a second switch array, a second optical component, and K output components. The M input components include at least one local input component having N input ports, and a light beam input by the local input component can be converged, under an action of the first optical component, on a row of switch units that are in the first switch array and that are corresponding to the local input component. In this way, this is equivalent to further connecting an N*1-dimensional WSS to an input end of an M*K-dimensional WSS, so that the wavelength switching apparatus can integrate a wavelength adding function based on the M*K-dimensional WSS.
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Patent Agency Ranking
公开(公告)号：US11067752B2
公开(公告)日：2021-07-20
申请号：US16836488
申请日：2020-03-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunfei Yan , Zhiyong Feng , Han Zhao , Liangjia Zong
Abstract: Embodiments of the present invention provide a reconfigurable optical add/drop multiplexer, including: an input component, an output component, a beamsplitter, a first switch array, a wavelength dispersion system, a redirection system, and a second switch array. The input component includes M+P input ports, the output component includes N output ports, the beamsplitter is configured to: receive M input beams from M input ports, and split each of the M input beams into at least N parts, to obtain at least M×N beams; the first switch array includes at least P switch units; and the second switch array includes N rows of switch units. The first switch array, the beamsplitter, the wavelength dispersion system, the redirection system, and the second switch array are arranged so that P optical add beams and sub-beams of M×N beams in the at least M×N beams can be routed to the N output ports.
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公开(公告)号：US10901294B2
公开(公告)日：2021-01-26
申请号：US16826548
申请日：2020-03-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liangjia Zong , Lei Mao , Mi Wang , Han Zhao
IPC: G02F1/31 , G02B6/35 , G02F1/1337
Abstract: A liquid crystal on silicon, a wavelength selective switch, an alignment direction obtaining method, and a method for manufacturing a liquid crystal on silicon. The liquid crystal on silicon has a first pixel area, and a first liquid crystal located in the first pixel area. The first liquid crystal is deflected in a plane perpendicular to a first panel, and is deflected towards a first direction in a plane parallel to the first panel. An alignment direction of the first partial alignment film located in the first pixel area is deflected towards a second direction relative to a polarization direction of an incident beam, and the second direction is opposite to the first direction to reduce a loss of a deflected beam.
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公开(公告)号：US20190199464A1
公开(公告)日：2019-06-27
申请号：US16285022
申请日：2019-02-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liangjia Zong , Han Zhao , Zhiyong Feng , Yunfei Yan
Abstract: A signal monitoring method and apparatus for a wavelength selective switch (WSS) are provided. The signal monitoring method for a wavelength selective switch WSS includes: encoding a phase of a first optical engine based on an input WDM signal, so that the WDM signal is split into a transmitted signal and a monitored signal after passing through the first optical engine; inputting the monitored signal to a second optical engine disposed at an output-side grating; and controlling the second optical engine to rotate in a wavelength plane of the WDM signal, so that monitored light of a specified wavelength in the monitored signal is output from the second optical engine at a preset angle.
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公开(公告)号：US20170299858A1
公开(公告)日：2017-10-19
申请号：US15636941
申请日：2017-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Liangjia Zong , Han Zhao
CPC classification number: G02B6/293 , G02B6/2931 , G02B6/29395 , G02B6/3512 , G02B6/3534 , G02B6/3548 , G02B6/3556 , G02B6/356 , G02B6/3588 , G02B26/08
Abstract: A wavelength selective switch (WSS) includes a liquid crystal on silicon (LCOS) panel and a fiber array with multiple ports. The two outermost ports of the multiple ports are a first port and a second port. An included angle between an intersecting line of the LCOS panel and a first plane in which the incident light entering the LCOS panel and emergent light exiting the LCOS panel are located, and incident light entering the LCOS panel is (90−θ) degrees, where a wavelength of the incident light is same as a wavelength of the emergent light, θ is less than 15 degrees, the first port and the included angle of (90−θ) degrees are located on a same side of the incident light, and the second port and the included angle of (90−θ) degrees are separately located on two sides of the incident light.
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公开(公告)号：US09515766B2
公开(公告)日：2016-12-06
申请号：US14882107
申请日：2015-10-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Han Zhao , Liangjia Zong , Ning Liu
IPC: H04B10/032 , H04Q11/00 , H04J14/02
CPC classification number: H04J14/0297 , H04B10/032 , H04J14/0212 , H04J14/0221 , H04Q11/0005 , H04Q11/0066 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0081
Abstract: The present invention provides a node apparatus, where two N×N wavelength selective switches are used to form a parallel-connected structure, and two ends of each power splitter are separately connected to input ends of the N×N wavelength selective switches, and two ends of each power combiner are separately connected to output ends of the N×N wavelength selective switches, thereby transferring route switching selection work originally performed between multiple 1×M wavelength selective switches to the inside of the N×N wavelength selective switch for implementation. Compared with an original structure using discrete components, the node apparatus is simplified, and when a traffic volume expands, the number of module slots on a line side does not need to be increased, thereby reducing usage costs eventually. The present invention is used for signal transmission in a node.
Abstract translation: 本发明提供了一种节点装置，其中使用两个N×N个波长选择开关来形成并联结构，并且每个功率分配器的两端分别连接到N×N个波长选择开关的输入端，并且两个 每个功率合成器的端部分别连接到N×N个波长选择开关的输出端，从而将最初在多个1×M波长选择开关之间执行的路由切换选择工作传送到N×N波长选择开关的内部，以实现。 与使用离散组件的原始结构相比，节点设备简化，当流量扩大时，线路侧的模块插槽数量不需要增加，从而最终降低使用成本。 本发明用于节点中的信号传输。
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