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公开(公告)号：US09806820B2
公开(公告)日：2017-10-31
申请号：US15199734
申请日：2016-06-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haili Wang , Xi Chen , Shiyu Xie , Shengmeng Fu
IPC: H04B10/04 , H04B10/50 , H04B10/564 , H04B10/079
CPC classification number: H04B10/504 , H04B10/07955 , H04B10/506 , H04B10/564
Abstract: Embodiments of the present invention disclose an optical transmitter and an optical transmission method. An embodiment of the present invention includes a directly modulated laser array and a micro-ring group array, where the directly modulated laser array may output multiple channels of optical signals, each directly modulated laser is correspondingly provided with one circular waveguide group and one first waveguide, each circular waveguide group may couple a part of optical signals output by a directly modulated laser corresponding to the circular waveguide group to a same second waveguide, and the second waveguide aggregates optical signals from circular waveguide groups and outputs an aggregated optical signals. The micro-ring group array implements not only filtering but also multiplexing, which effectively reduces a quantity of elements, reduces a size of an optical transmitter, and reduces costs.
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公开(公告)号：US11750956B2
公开(公告)日：2023-09-05
申请号：US17548793
申请日：2021-12-13
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengmeng Fu , Yu Xiong , Jiangwei Man , Chengyan Wang , Xiaofei Zeng , Li Zeng
CPC classification number: H04Q11/0067 , H04B10/6931 , H04Q11/0071
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：US10735124B2
公开(公告)日：2020-08-04
申请号：US16441658
申请日：2019-06-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Ruiqiang Ji , Xin Tu , Yanbo Li , Shengmeng Fu
Abstract: Examples of a polarization independent optical device are described. One example polarization independent optical device includes an input/output preprocessing optical path and M add/drop optical paths. Any add/drop optical path can be configured to drop a first QTE and a first PTE that meet a resonance condition of a microring included in the add/drop optical path such that each add/drop optical path can be configured to drop a desired optical signal. Any add/drop optical path can also be configured to transmit an input optical signal to the input/output preprocessing optical path. Therefore, when any of the M add/drop optical paths is configured to drop a desired optical signal, another add/drop optical path can be configured to add a desired optical signal.
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公开(公告)号：US10652635B2
公开(公告)日：2020-05-12
申请号：US15914655
申请日：2018-03-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianhe Gao , Minghui Tao , Zhicheng Ye , Shengmeng Fu
Abstract: Embodiments of the present disclosure provide a passive optical network communications method and apparatus, and a system. The method includes: determining a wavelength channel group of an optical network unit (ONU) and a wavelength channel in the wavelength channel group; and sending a first message to the ONU, where the first message carries identification information of the wavelength channel group and identification information of the wavelength channel in the wavelength channel group. In the embodiments of the present disclosure, such a logical channel group as a wavelength channel group is established, and when a channel in a channel group is faulty, a scheduling module of an OLT can rapidly and easily reallocate a service to another member in the channel group, so that channel interaction is avoided. Therefore, bandwidth scheduling efficiency and bandwidth utilization of a PON system are higher.
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公开(公告)号：US20190171044A1
公开(公告)日：2019-06-06
申请号：US16252450
申请日：2019-01-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanbo Li , Xiaolu Song , Zhen Dong , Ruiqiang Ji , Shengmeng Fu , Li Zeng
IPC: G02F1/025
CPC classification number: G02F1/025 , G02F1/015 , G02F2001/0151
Abstract: An electro-optic modulator includes an input waveguide, a beam splitter connected to the input waveguide, a modulation arm that is disposed on each branch of the beam splitter and modulates a signal. Each modulation arm is correspondingly disposed with a first layer electrode and a second layer electrode. The first layer electrode is a high-frequency traveling wave electrode and is configured to change carrier concentration in the modulation arm, the second layer electrode is a direct current electrode having an inductor function, and an inductor formed in the second layer electrode is connected to the first layer electrode. The electro-optic modulator has functions of a bias tee, so that integration of the electro-optic modulator can be improved without affecting its performance. High-density packaging layout difficulty and cabling pressure can be effectively reduced, and cabling and packaging of a multi-channel high-speed signal on a base board can be implemented.
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Patent Agency Ranking
公开(公告)号：US20180199119A1
公开(公告)日：2018-07-12
申请号：US15914655
申请日：2018-03-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jianhe Gao , Minghui Tao , Zhicheng Ye , Shengmeng Fu
CPC classification number: H04Q11/0067 , H04J3/1694 , H04J14/0226 , H04J14/0232 , H04J14/0246 , H04Q11/0071
Abstract: Embodiments of the present disclosure provide a passive optical network communications method and apparatus, and a system. The method includes: determining a wavelength channel group of an optical network unit (ONU) and a wavelength channel in the wavelength channel group; and sending a first message to the ONU, where the first message carries identification information of the wavelength channel group and identification information of the wavelength channel in the wavelength channel group. In the embodiments of the present disclosure, such a logical channel group as a wavelength channel group is established, and when a channel in a channel group is faulty, a scheduling module of an OLT can rapidly and easily reallocate a service to another member in the channel group, so that channel interaction is avoided. Therefore, bandwidth scheduling efficiency and bandwidth utilization of a PON system are higher.
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公开(公告)号：US12040593B2
公开(公告)日：2024-07-16
申请号：US17226977
申请日：2021-04-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jialin Zhao , Chengcheng Gui , Shengmeng Fu
IPC: H01S5/10 , H01S5/026 , H04B10/50 , H04B10/572
CPC classification number: H01S5/1092 , H01S5/026 , H04B10/503 , H04B10/572
Abstract: A multi-wavelength laser is provided, including a reference wavelength-tunable laser, N−1 secondary wavelength-tunable lasers, N beam splitters, a phase modulator, and N−1 frequency difference detection apparatuses. The reference wavelength-tunable laser is connected to one beam splitter which includes two output ports, and one of the output ports is connected to the phase modulator. The phase modulator is separately connected to the N−1 frequency difference detection apparatuses. The N−1 secondary wavelength-tunable lasers one-to-one correspond to remaining N−1 beam splitters and the N−1 frequency difference detection apparatuses. The secondary wavelength-tunable laser is connected to a corresponding beam splitter, the corresponding beam splitter includes two output ports, and one of the output ports is connected to a corresponding frequency difference detection apparatus. N is a positive integer not less than 2. A multi-wavelength optical signal generated by the phase modulator has a precise frequency spacing.
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公开(公告)号：US10887677B2
公开(公告)日：2021-01-05
申请号：US16520029
申请日：2019-07-23
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Shengmeng Fu , Yu Xiong , Jiangwei Man , Chengyan Wang , Xiaofei Zeng , Li Zeng
Abstract: The present disclosure relates to optical receivers. One example optical receiver includes 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 compensates 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.
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公开(公告)号：US10684497B2
公开(公告)日：2020-06-16
申请号：US16252450
申请日：2019-01-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanbo Li , Xiaolu Song , Zhen Dong , Ruiqiang Ji , Shengmeng Fu , Li Zeng
Abstract: An electro-optic modulator includes an input waveguide, a beam splitter connected to the input waveguide, a modulation arm that is disposed on each branch of the beam splitter and modulates a signal. Each modulation arm is correspondingly disposed with a first layer electrode and a second layer electrode. The first layer electrode is a high-frequency traveling wave electrode and is configured to change carrier concentration in the modulation arm, the second layer electrode is a direct current electrode having an inductor function, and an inductor formed in the second layer electrode is connected to the first layer electrode. The electro-optic modulator has functions of a bias tee, so that integration of the electro-optic modulator can be improved without affecting its performance. High-density packaging layout difficulty and cabling pressure can be effectively reduced, and cabling and packaging of a multi-channel high-speed signal on a base board can be implemented.
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公开(公告)号：US20190081708A1
公开(公告)日：2019-03-14
申请号：US16185922
申请日：2018-11-09
Applicant: Huawei Technologies Co., Ltd.
Inventor： Shengmeng Fu , Hongguang Zhang , Jiangwei Man , Jianhe Gao
IPC: H04B10/516 , H04L27/04 , H04B10/67
Abstract: A method includes: sending, by a signal transmitting device, a first PAM signal to a signal receiving device, where the first PAM signal includes N first level amplitudes, and N≥3; receiving, by the transmitting device, feedback parameters sent by the receiving device, where the feedback parameters are determined based on the first PAM signal; determining, by the transmitting device, N target level amplitudes based on the feedback parameters, where intervals between every two adjacent target level amplitudes in the N target level amplitudes are different from each other; and generating, by the transmitting device based on the N target level amplitudes, a second PAM signal that needs to be sent to the receiving device.
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