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Patent Agency Ranking
公开(公告)号：US11228823B2
公开(公告)日：2022-01-18
申请号：US16952912
申请日：2020-11-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengmeng Fu , Yu Xiong , Jiangwei Man , Chengyan Wang , Xiaofei Zeng , Li Zeng
Abstract: An optical receiver is disclosed, including an optoelectronic detector, a transimpedance amplification (TIA) circuit, a single-ended-to-differential converter, an I/O interface, and a controller. The optoelectronic detector, having bandwidth lower than required system transmission bandwidth, converts an optical signal into a current signal. The TIA circuit compensate gain for the received current signal based on a received control signal, to obtain a voltage signal, where a frequency response value of the current signal within first bandwidth is greater than that within the bandwidth of the optoelectronic detector, and any frequency in the first bandwidth is not lower than an upper cut-off frequency of the optoelectronic detector. The single-ended-to-differential converter converts the voltage signal into a differential voltage signal. The I/O interface outputs the differential voltage signal. The controller generates the control signal based on the differential voltage signal. The optical receiver disclosed can reduce costs while ensuring signal quality.
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公开(公告)号：US10924200B2
公开(公告)日：2021-02-16
申请号：US16663521
申请日：2019-10-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ruiqiang Ji , Shengmeng Fu , Yanbo Li , Lewei Zhang , Li Zeng
Abstract: A reconfigurable optical add/drop multiplexer includes N input ports, N output ports, M add ports and M drop ports. Each of the N input ports and each of the M add ports is respectively connected to one first polarizer. Each of the N output ports and each of the M drop ports is respectively connected to one second polarizer. A first end of the first polarizer is connected to a second end of the first polarizer, forming a loop including the first polarizer. A first end of the second polarizer is connected to a second end of the second polarizer, forming a loop including the second polarizer. An annular waveguide array is between a loop LIi and a loop LOj. A first polarizer included in the loop LIi is connected to an ith input port. A second polarizer included in the loop LOj is connected to a jth output port.
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公开(公告)号：US10666468B2
公开(公告)日：2020-05-26
申请号：US16227366
申请日：2018-12-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianhe Gao , Bo Gao , Hongguang Zhang , Shengmeng Fu
Abstract: The present disclosure relates to the field of communications technologies, and discloses a channel training method, apparatus, and system, so as to resolve a problem in which a newly added ONU in a PON cannot be registered and go online in time. In embodiments of the present disclosure, a first moment for triggering channel training is determined; normal data is stopped sending from the first moment and a training frame is generated; and then the training frame is sent to all ONUs in a PON, so that a target ONU trains an automatic adaptive equalizer based on the training frame, where the target ONU is at least one of all the ONUs in the PON. The solutions provided in the embodiments of the present disclosure are applicable to the equalizer training the ONU.
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公开(公告)号：US09225367B2
公开(公告)日：2015-12-29
申请号：US14747518
申请日：2015-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shengmeng Fu , Haili Wang , Shiyu Xie
CPC classification number: H04B1/10 , H04B10/2575 , H04B10/27 , H04B10/60 , H04B10/6971 , H04L25/03038 , H04L25/03057
Abstract: Embodiments of the present invention provide a decision feedback equalizer, which includes: a receive end, configured to receive a first differential signal, and input the first differential signal to the superimposer; a superimposer, configured to superimpose the first differential signal on a square-wave signal output by a adjusting unit to obtain a second differential signal; the adjusting unit, configured to perform phase and/or amplitude adjustment for a second square-wave signal; the first decision device is configured to compare a voltage amplitude of the second differential signal with a set value, and output a first square-wave signal; the second decision device is configured to compare the voltage amplitude of the second differential signal with a voltage amplitude of a signal adjusted by the adjusting unit, and input an obtained second square-wave signal to the adjusting unit. The embodiments of the present invention can reduce data edge jitter.
Abstract translation: 本发明的实施例提供了一种判决反馈均衡器，包括：接收端，被配置为接收第一差分信号，并将第一差分信号输入到叠加器; 叠加器，被配置为将第一差分信号叠加在由调整单元输出的方波信号上以获得第二差分信号; 所述调整单元被配置为对第二方波信号执行相位和/或幅度调整; 第一判定装置被配置为将第二差分信号的电压幅度与设定值进行比较，并输出第一方波信号; 第二判定装置被配置为将第二差分信号的电压幅度与由调整单元调整的信号的电压幅度进行比较，并将获得的第二方波信号输入到调整单元。 本发明的实施例可以减少数据边缘抖动。
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公开(公告)号：US20150288395A1
公开(公告)日：2015-10-08
申请号：US14747518
申请日：2015-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shengmeng Fu , Haili Wang , Shiyu Xie
IPC: H04B1/10 , H04B10/2575 , H04B10/27 , H04L25/03 , H04B10/60
CPC classification number: H04B1/10 , H04B10/2575 , H04B10/27 , H04B10/60 , H04B10/6971 , H04L25/03038 , H04L25/03057
Abstract: Embodiments of the present invention provide a decision feedback equalizer, which includes: a receive end, configured to receive a first differential signal, and input the first differential signal to the superimposer; a superimposer, configured to superimpose the first differential signal on a square-wave signal output by a adjusting unit to obtain a second differential signal; the adjusting unit, configured to perform phase and/or amplitude adjustment for a second square-wave signal; the first decision device is configured to compare a voltage amplitude of the second differential signal with a set value, and output a first square-wave signal; the second decision device is configured to compare the voltage amplitude of the second differential signal with a voltage amplitude of a signal adjusted by the adjusting unit, and input an obtained second square-wave signal to the adjusting unit. The embodiments of the present invention can reduce data edge jitter.
Abstract translation: 本发明的实施例提供了一种判决反馈均衡器，包括：接收端，被配置为接收第一差分信号，并将第一差分信号输入到叠加器; 叠加器，被配置为将第一差分信号叠加在由调整单元输出的方波信号上以获得第二差分信号; 所述调整单元被配置为对第二方波信号执行相位和/或幅度调整; 第一判定装置被配置为将第二差分信号的电压幅度与设定值进行比较，并输出第一方波信号; 第二判定装置被配置为将第二差分信号的电压幅度与由调整单元调整的信号的电压幅度进行比较，并将获得的第二方波信号输入到调整单元。 本发明的实施例可以减少数据边缘抖动。
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