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公开(公告)号：US20230073589A1
公开(公告)日：2023-03-09
申请号：US17986328
申请日：2022-11-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jinlei Wang , Yunfei Yan , Zhiyong Feng
Abstract: A display apparatus includes an image generator including a spatial light modulator that is configured to perform phase modulation on to-be-modulated image light to generate modulated first image light and modulated second image light, and an image display module that is disposed on a light emitting side of the image generator. The image display module includes a first diffusing screen and a second diffusing screen. The first image light is projected on the first diffusing screen and the second image light is projected on the second diffusing screen. A spatial position of the first diffusing screen is different from a spatial position of the second diffusing screen.
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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：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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14.发明申请Method for Generating a Probe Pulse and Coherent Optical Time Domain Reflectometer 有权用于产生探头脉冲和相干光时域反射计的方法公开(公告)号：US20130114954A1
公开(公告)日：2013-05-09
申请号：US13728686
申请日：2012-12-27
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhiyong Feng , Shaofeng Qiu , Yijia Wei
IPC: H04B10/071
CPC classification number: H04B10/071 , G01M11/3127
Abstract: The present invention relates to the field of communication transmission, and in particular, to a method for generating a probe pulse and a coherent optical time domain reflectometer. The coherent optical time domain reflectometer includes: a control unit, configured to generate a first pulse signal and a second pulse signal which have a same period T, where the second pulse signal lags behind the first pulse signal, and T satisfies T≧t+2L/C; a driving unit, configured to generate a frequency change driving signal according to the first pulse signal; a continuous light laser device, configured to generate, as driven by the frequency change driving signal, continuous light having a changing frequency and an unchanging frequency spectrum width; and a probe pulse generating unit, configured to modulate the continuous light according to the second pulse signal to generate a probe pulse.
Abstract translation: 本发明涉及通信传输领域，特别涉及用于产生探针脉冲和相干光时域反射计的方法。 相干光时域反射计包括：控制单元，被配置为产生具有相同周期T的第一脉冲信号和第二脉冲信号，其中第二脉冲信号滞后于第一脉冲信号，并且T满足T> = t + 2L / C; 驱动单元，被配置为根据所述第一脉冲信号产生变频驱动信号; 连续光激光器件，被配置为产生由所述变频驱动信号驱动的具有变化频率和不变频谱宽度的连续光; 以及探针脉冲发生单元，被配置为根据所述第二脉冲信号调制所述连续光以产生探针脉冲。
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公开(公告)号：US11953732B2
公开(公告)日：2024-04-09
申请号：US16990129
申请日：2020-08-11
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yunfei Yan , Zhiyong Feng , Liangjia Zong
CPC classification number: G02B6/356 , G02B6/3556 , H04J14/0212 , H04Q11/0005 , H04Q2011/0015 , H04Q2011/0035
Abstract: An optical cross-connect disclosed herein includes an input-end unit, an optical beam-splitting and switching unit, and an output-end unit. The input-end unit is configured to transmit a set of first light beams to the optical beam-splitting and switching unit. The optical beam-splitting and switching unit is configured to split each light beam in the set of first light beams into second light beams, to obtain a set of second light beams. The optical beam-splitting and switching unit is further configured to: perform optical path deflection on each light beam in the set of second light beams based on a preset optical-path offset parameter set, and transmit, to the output-end unit, the deflected second light beams. The output-end unit is configured to output the set of second light beams.
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Patent Agency Ranking
公开(公告)号：US11171722B2
公开(公告)日：2021-11-09
申请号：US17097519
申请日：2020-11-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zhenhua Dong , Chao Pan , Zhiyong Feng , Xu Zhou
IPC: H04B10/071 , H04B10/40 , H04B10/61 , H04B10/25
Abstract: This application discloses an optical signal transceiver apparatus, and belongs to the communications field. The apparatus includes: an optical signal generation module, configured to generate a to-be-sent optical signal and a local oscillator optical signal, where the to-be-sent optical signal includes an OTDR signal; an optical combining/splitting module, configured to: receive a to-be-processed optical signal from an optical fiber; and input the to-be-processed optical signal into an coherent receiving module; the coherent receiving module, configured to coherently receive the local oscillator optical signal and the to-be-processed optical signal to obtain a to-be-processed electrical signal; a signal processing module, configured to: obtain a first digital signal and a second digital signal from the to-be-processed electrical signal based on a signal frequency; process the first digital signal to obtain a communications code stream; and process the second digital signal to obtain information used to reflect a feature of the optical fiber.
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公开(公告)号：US10567085B2
公开(公告)日：2020-02-18
申请号：US16047013
申请日：2018-07-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jun Luo , Zhiyong Feng
Abstract: A wavelength tunable optical transmitter apparatus relates to the field of communications technologies and includes a plurality of multi-longitudinal mode lasers (1), a cyclic wavelength demultiplexer/multiplexer (2), and a reflector (3). The multi-longitudinal mode lasers output multi-longitudinal mode signals having a periodically repeated frequency interval, where the period is Δfmode. The cyclic wavelength demultiplexer/multiplexer performs periodically repeated filtering on the multi-longitudinal mode signals input by the multi-longitudinal mode lasers, to obtain single frequency signals, where a repetition period of a filter window is Δfband, Δfmode is different from Δfband, and Δfmode and Δfband are not in an integer-multiple relationship, and then, multiplexes the plurality of single frequency signals and outputs the multiplexed signal. The reflector reflects the multiplexed signal. The reflected multiplexed signal separately returns to the multi-longitudinal mode laser by using the cyclic wavelength demultiplexer/multiplexer again.
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公开(公告)号：US10560186B2
公开(公告)日：2020-02-11
申请号：US16378527
申请日：2019-04-08
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Liangjia Zong , Han Zhao , Zhiyong Feng , Yunfei Yan
IPC: H04B10/079 , H04B10/548 , H04J14/02
Abstract: The present invention discloses an optical power equilibrium method and apparatus. The method includes: configuring a liquid crystal on silicon LCOS as a blazed grating pattern whose phase periodically changes, where each period includes three grating segments, a pixel quantity in each period does not change, and a second grating segment is located between a first grating segment and a third grating segment; monitoring power of wavelength signals in a WDM signal, where the WDM signal includes a first wavelength signal; and reducing a phase modulation depth and a pixel quantity of the second grating segment in each period at a first location if power of the first wavelength signal is greater than preset target power, so that the power of the first wavelength signal is the same as the target power, where the first location is a location at which the first wavelength signal is incident to the LCOS.
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19.发明授权公开(公告)号：US10133005B2
公开(公告)日：2018-11-20
申请号：US15866058
申请日：2018-01-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunfei Yan , Han Zhao , Zhiyong Feng
Abstract: A wavelength selective switch (WSS), including an input optical fiber collimation array, a first optical switching engine, a dispersion device, an optical path converter, a second optical switching engine, a third optical switching engine, and an output optical fiber collimation array. A first beam is input from a first port of the input optical fiber collimation array. The first optical switching engine performs angle deflection on the first beam on a first plane. The dispersion device demultiplexes, on a second plane, the angle-deflected first beam into multiple sub-wavelength beams. The second optical switching engine performs angle deflection on the multiple sub-wavelength beams that are obtained by demultiplexing. The dispersion device multiplexes, on the second plane, the angle-deflected multiple sub-wavelength beams. The third optical switching engine performs angle deflection on the multiplexed multiple sub-wavelength beams on the first plane.
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20.发明申请公开(公告)号：US20180128984A1
公开(公告)日：2018-05-10
申请号：US15866058
申请日：2018-01-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunfei Yan , Han Zhao , Zhiyong Feng
CPC classification number: G02B6/3546 , G02B6/2773 , G02B6/293 , G02B6/29371 , G02B6/2938 , G02B6/32 , G02B6/3512 , G02B6/3524 , G02B6/356 , G02B6/3594 , H04J14/0212 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0026 , H04Q2011/0035 , H04Q2011/0039
Abstract: A wavelength selective switch (WSS), including an input optical fiber collimation array, a first optical switching engine, a dispersion device, an optical path converter, a second optical switching engine, a third optical switching engine, and an output optical fiber collimation array. A first beam is input from a first port of the input optical fiber collimation array. The first optical switching engine performs angle deflection on the first beam on a first plane. The dispersion device demultiplexes, on a second plane, the angle-deflected first beam into multiple sub-wavelength beams. The second optical switching engine performs angle deflection on the multiple sub-wavelength beams that are obtained by demultiplexing. The dispersion device multiplexes, on the second plane, the angle-deflected multiple sub-wavelength beams. The third optical switching engine performs angle deflection on the multiplexed multiple sub-wavelength beams on the first plane.
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