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公开(公告)号：US20170099108A1
公开(公告)日：2017-04-06
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: H04B10/50 , H04B10/079 , H04B10/564
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：US20200059314A1
公开(公告)日：2020-02-20
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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Patent Agency Ranking
公开(公告)号：US20210152901A1
公开(公告)日：2021-05-20
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：US20220174379A1
公开(公告)日：2022-06-02
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
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：US20210226418A1
公开(公告)日：2021-07-22
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 , H04B10/50 , H04B10/572 , H01S5/026
Abstract: A multi-wavelength laser includes 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, the beam splitter 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：US20190296850A1
公开(公告)日：2019-09-26
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：US20190123941A1
公开(公告)日：2019-04-25
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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