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公开(公告)号：US11960031B2
公开(公告)日：2024-04-16
申请号：US17846883
申请日：2022-06-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Guangyuan Shi , Li Zeng , Xinhua Xiao
CPC classification number: G01S7/4817 , G01S7/4815 , G01S7/4816 , G01S17/08 , G02B26/0833 , G02B26/101
Abstract: Embodiments of this application disclose a laser measurement system and a laser radar. In one aspect, a laser measurement system includes N laser ranging components, a reflector, and MEMS micromirror. The N laser ranging components can emit an emergent light beam onto the reflector. The reflector can perform optical path reflecting on the emergent light beam and emit the reflected emergent light beam onto the MEMS micromirror. The MEMS micromirror can change a direction of the emergent light beam to implement two-dimensional scanning, change a direction of an echo light beam, and emit this beam onto the reflector. The reflector can perform optical path reflecting on the echo light beam and emit this beam onto the N laser ranging components. The N laser ranging components can receive the echo light beam and perform ranging based on a time difference between the emergent light beam and the echo light beam.
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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：US10422967B2
公开(公告)日：2019-09-24
申请号：US16036723
申请日：2018-07-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qing Zhao , Xiaolu Song , Li Zeng , Ruiqiang Ji , Yanbo Li
Abstract: An optical coupling apparatus and method are described. An embodiment of an optical coupling apparatus may include a first optical chip, a second optical chip, and an optical writing waveguide block. In the apparatus, the first optical chip is coupled to the optical writing waveguide block in a first coupling manner, and the second optical chip is coupled to the optical writing waveguide block in a second coupling manner. Furthermore, in the apparatus, the first optical chip is optically interconnected to the second optical chip by using the optical writing waveguide block. Compatibility between a plurality of coupling manners is therefore enabled by using the technical solutions described herein.
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公开(公告)号：US10230486B2
公开(公告)日：2019-03-12
申请号：US15783382
申请日：2017-10-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiangwei Man , Xiaolu Song , Li Zeng
Abstract: An optical transceiver and a network device are provided. The optical transceiver includes a common end module and two data submodules. The common end module includes a multi-carrier light source, a wavelength division multiplexer, a wavelength division demultiplexer, an external optical interface, and two first beam splitters. Each data submodule includes a second beam splitter, an optical/electrical signal modulator, and an optical receiver. According to the optical transceiver and the network device, a high-capacity optical transceiver with a single optical interface can be implemented, so that optical interface management complexity is reduced, and a fiber resource is reduced.
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Patent Agency Ranking
公开(公告)号：US20180321451A1
公开(公告)日：2018-11-08
申请号：US16036723
申请日：2018-07-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qing Zhao , Xiaolu Song , Li Zeng , Ruiqiang Ji , Yanbo Li
CPC classification number: G02B6/4206 , G02B6/3608 , G02B6/42 , G02B6/4214 , G02B6/4249
Abstract: An optical coupling apparatus and method are described. An embodiment of an optical coupling apparatus may include a first optical chip, a second optical chip, and an optical writing waveguide block. In the apparatus, the first optical chip is coupled to the optical writing waveguide block in a first coupling manner, and the second optical chip is coupled to the optical writing waveguide block in a second coupling manner. Furthermore, in the apparatus, the first optical chip is optically interconnected to the second optical chip by using the optical writing waveguide block. Compatibility between a plurality of coupling manners is therefore enabled by using the technical solutions described herein.
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公开(公告)号：US20180054273A1
公开(公告)日：2018-02-22
申请号：US15783382
申请日：2017-10-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jiangwei Man , Xiaolu Song , Li Zeng
CPC classification number: H04J14/0247 , H04B10/40 , H04B10/506 , H04J14/02 , H04Q11/0005 , H04Q2011/0016 , H04Q2011/0022 , H04Q2011/0083
Abstract: An optical transceiver and a network device are provided. The optical transceiver includes a common end module and two data submodules. The common end module includes a multi-carrier light source, a wavelength division multiplexer, a wavelength division demultiplexer, an external optical interface, and two first beam splitters. Each data submodule includes a second beam splitter, an optical/electrical signal modulator, and an optical receiver. According to the optical transceiver and the network device, a high-capacity optical transceiver with a single optical interface can be implemented, so that optical interface management complexity is reduced, and a fiber resource is reduced.
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公开(公告)号：US20170286250A1
公开(公告)日：2017-10-05
申请号：US15631869
申请日：2017-06-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Chen , Jiangwei Man , Li Zeng
CPC classification number: H04B10/6971 , G01R31/3004 , G01R31/3016 , H03M13/256 , H04B3/23 , H04L25/03038 , H04L25/03057 , H04L25/03267 , H04L2025/03617
Abstract: A signal compensation method and device, where the method includes receiving a signal sequence suffering from intersymbol interference (ISI), setting a first filtering coefficient to perform filter compensation on the received signal sequence to obtain a first compensation signal sequence, setting a balance filtering coefficient to perform filter compensation on the first compensation signal sequence to obtain a balance compensation result, where the balance filtering coefficient is obtained by adjusting, according to a first compensation error, a balance filtering coefficient set last time, performing sequence estimation on the balance compensation result and outputting the balance compensation result, where the first compensation error adjusts the balance filtering coefficient set to perform filter compensation on the first compensation signal sequence in an iterative manner, thereby effectively compensating for the signal sequence suffering from the ISI, and improving performance of an optical fiber communications system.
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公开(公告)号：US09735540B2
公开(公告)日：2017-08-15
申请号：US15177853
申请日：2016-06-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
CPC classification number: H01S5/1007 , H01S5/021 , H01S5/0265 , H01S5/028 , H01S5/0287 , H01S5/06256 , H01S5/142 , H01S5/3013
Abstract: A laser includes a substrate and a resonant cavity. In addition to an active gain region, a first phase shift region, an optical branching region, and N reflective mode selection regions, the resonant cavity further includes a highly reflective surface, where a reflectivity of the highly reflective surface is greater than reflectivities of the N reflective mode selection regions, so that laser beams are output from the N reflective mode selection regions. Because the laser naturally includes at least two reflective mode selection regions, at least two laser beams are output. According to the laser provided by the embodiments of the present invention, one laser can output two laser beams or even multiple laser beams; therefore, laser beam generation efficiency is high and average costs for generating a single laser beam are accordingly reduced.
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公开(公告)号：US09094131B2
公开(公告)日：2015-07-28
申请号：US13718800
申请日：2012-12-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Lei Liu , Liangchuan Li , Bangning Mao , Li Zeng
IPC: H04B10/556 , H04B10/54 , H04L27/20 , H04B10/50
CPC classification number: H04B10/5561 , H04B10/5053 , H04B10/541 , H04L27/2096
Abstract: A signal generating method and apparatus in the field of signal technologies are provided. The method includes: adjusting an incident angle of an optical signal entering a polarization beam splitter, so that the polarization beam splitter outputs a first optical signal and a second optical signal that have a preset power ratio; performing QPSK modulation on the first and second optical signal respectively by using a first and second externally input data streams, to obtain a first and a second QPSK optical signal; before the first QPSK optical signal and the second QPSK optical signal are input into a polarization beam combiner, adjusting a polarization state of the first or the second QPSK optical signal; when the polarization states of the two QPSK optical signals are the same, outputting a 16QAM signal; and when the polarization states of the two QPSK optical signals are orthogonal, outputting a DP-QPSK signal.
Abstract translation: 提供了信号技术领域的信号产生方法和装置。 该方法包括：调整进入偏振分束器的光信号的入射角，使得偏振分束器输出具有预设功率比的第一光信号和第二光信号; 通过使用第一和第二外部输入数据流分别对第一和第二光信号执行QPSK调制，以获得第一和第二QPSK光信号; 在将第一QPSK光信号和第二QPSK光信号输入到偏振光束组合器之前，调整第一或第二QPSK光信号的偏振状态; 当两个QPSK光信号的极化状态相同时，输出16QAM信号; 并且当两个QPSK光信号的偏振态正交时，输出DP-QPSK信号。
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