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

IPC: H04Q11/00 ,  H04B10/69

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.

公开(公告)号：US08982697B2

公开(公告)日：2015-03-17

申请号：US13872806

申请日：2013-04-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Chiwu Ding ,  Huaping Qing ,  Jun Cai ,  Li Zeng

IPC: H04L12/26 ,  H04L12/801 ,  H04L29/06 ,  H04L29/08

CPC classification number: H04L43/10 ,  H04L47/34 ,  H04L69/22 ,  H04L69/323 ,  H04L69/324

Abstract: A method and an apparatus for sending an Ethernet physical-layer OAM overhead, and a method and an apparatus for receiving an Ethernet physical-layer OAM overhead are disclosed herein. A method for sending an Ethernet physical-layer OAM overhead includes: adjusting the order of sending a payload block and part of Inter-Packet Gaps (IPGs) in a data stream to be transmitted; and when receiving a request for sending an OAM overhead, substituting the OAM overhead for the part of IPGs, and sending the OAM overhead before sending the payload block. Through the present invention, the order of sending IPGs and payload blocks in an MAC data stream can be adjusted, and the OAM overhead can be sent in time.

Abstract translation: 本文公开了用于发送以太网物理层OAM开销的方法和装置，以及用于接收以太网物理层OAM开销的方法和装置。 一种用于发送以太网物理层OAM开销的方法包括：在要发送的数据流中调整发送有效载荷块和部分间隔间隔间隔（IPG）的顺序; 并且当接收到发送OAM开销的请求时，将OAM开销替换为IPG的一部分，并且在发送有效载荷块之前发送OAM开销。 通过本发明，可以调整在MAC数据流中发送IPG和有效负载块的顺序，并且可以及时发送OAM开销。

公开(公告)号：US20130235734A1

公开(公告)日：2013-09-12

申请号：US13872806

申请日：2013-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Chiwu Ding ,  Huaping Qing ,  Jun Cai ,  Li Zeng

IPC: H04L12/26

CPC classification number: H04L43/10 ,  H04L47/34 ,  H04L69/22 ,  H04L69/323 ,  H04L69/324

Abstract: A method and an apparatus for sending an Ethernet physical-layer OAM overhead, and a method and an apparatus for receiving an Ethernet physical-layer OAM overhead are disclosed herein. A method for sending an Ethernet physical-layer OAM overhead includes: adjusting the order of sending a payload block and part of Inter-Packet Gaps (IPGs) in a data stream to be transmitted; and when receiving a request for sending an OAM overhead, substituting the OAM overhead for the part of IPGs, and sending the OAM overhead before sending the payload block. Through the present invention, the order of sending IPGs and payload blocks in an MAC data stream can be adjusted, and the OAM overhead can be sent in time.

Abstract translation: 本文公开了用于发送以太网物理层OAM开销的方法和装置，以及用于接收以太网物理层OAM开销的方法和装置。 一种用于发送以太网物理层OAM开销的方法包括：在要发送的数据流中调整发送有效载荷块和部分间隔间隔间隔（IPG）的顺序; 并且当接收到发送OAM开销的请求时，将OAM开销替换为IPG的一部分，并且在发送有效载荷块之前发送OAM开销。 通过本发明，可以调整在MAC数据流中发送IPG和有效负载块的顺序，并且可以及时发送OAM开销。

公开(公告)号：US11428788B2

公开(公告)日：2022-08-30

申请号：US17241697

申请日：2021-04-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Guangyuan Shi ,  Li Zeng ,  Xinhua Xiao

IPC: G01S7/48 ,  G01S7/481 ,  G01S17/08 ,  G02B26/08 ,  G02B26/10

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.

公开(公告)号：US20220113417A1

公开(公告)日：2022-04-14

申请号：US17557381

申请日：2021-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenwei Wang ,  Li Zeng

IPC: G01S17/42 ,  G01S7/4911 ,  G01S7/4914 ,  G01S7/4912

Abstract: A laser radar, which may be applied to autonomous driving and internet of vehicles, includes: a laser: emit N laser beams, and transmit the beams to N first beam splitting modules; first beam splitting module: split the received laser beam into a first laser beam and a second laser beam; an included angle adjustment module: receive N second laser beams, adjust an included angle between any two adjacent second laser beams in the N second laser beams to be greater than 0 degrees and not greater than an angular resolution; a scanning module: receive the N second laser beams, respectively emit the N second laser beams to a detection area at different detection angles; a detection module: receive the first laser beam and a corresponding echo signal, perform frequency mixing to obtain a beat frequency signal, determine association information of a target object based on the beat frequency signal.

公开(公告)号：US20210302546A1

公开(公告)日：2021-09-30

申请号：US17346485

申请日：2021-06-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yangkui Ou ,  Li Zeng ,  Guoqing Han ,  Chendi Jiang

IPC: G01S7/481 ,  G01S17/88 ,  G02B26/10 ,  G01S17/06

Abstract: A laser radar includes a light source, a scanning mirror, a detector, and a reflector group. The scanning mirror includes an emitting reflective surface and a receiving reflective surface. The reflector group includes a first reflector and a second reflector. An included angle between the first reflector and the second reflector is a first included angle, an included angle between an incident laser beam of the emitting reflective surface and an emergent laser beam of the receiving reflective surface is a second included angle, and the second included angle is twice the first included angle. The emitting reflective surface is configured to reflect the laser beam emitted by the light source. The receiving reflective surface is configured to reflect, to the detector, the laser beam reflected back by an object. The reflect group is configured to change a propagation direction of the laser beam.

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.

公开(公告)号：US20160294158A1

公开(公告)日：2016-10-06

申请号：US15177853

申请日：2016-06-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xi CHEN ,  Bo Chen ,  Li Zeng ,  Lei Gao

IPC: H01S5/10 ,  H01S5/028 ,  H01S5/30

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.

Abstract translation: 激光器包括衬底和谐振腔。 除了有源增益区域，第一相移区域，光分支区域和N反射模式选择区域之外，谐振腔还包括高反射表面，其中高反射表面的反射率大于 N反射模式选择区域，使得从N个反射模式选择区域输出激光束。 因为激光器自然地包括至少两个反射模式选择区域，所以输出至少两个激光束。 根据本发明实施例提供的激光器，一个激光器可以输出两束激光束，甚至多个激光束; 因此，激光束产生效率高，并且相应地减小了用于产生单个激光束的平均成本。

公开(公告)号：US09294217B2

公开(公告)日：2016-03-22

申请号：US14154362

申请日：2014-01-14

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiaolu Song ,  Wenbin Jiang ,  Qi Deng ,  Li Zeng

IPC: H04J14/06 ,  G02B27/28 ,  G02B6/27

CPC classification number: H04J14/06 ,  G02B6/2713 ,  G02B6/2773 ,  G02B27/283

Abstract: Embodiments of the present invention relate to the optical communication field and disclose an optical signal multiplexing method and an optical multiplexer. The method provided in the present invention includes: adjusting polarization states of two of four optical signals to be multiplexed, and preferably, mutually orthogonal to, the polarization states of the remaining two optical signals; combining one optical signal in the adjusted polarization state with one optical signal in the unadjusted polarization state into one optical signal through polarization multiplexing; and combining the two optical signals obtained through polarization multiplexing into one optical signal. When multiplexing is performed according to the solutions of the present invention, all optical signals are multiplexed into one optical signal based on polarization multiplexing, optical paths traveled by different optical signals differ slightly, and the optical power and the optical field energy distribution differ slightly between different optical signals in the finally multiplexed optical signal.

Abstract translation: 本发明的实施例涉及光通信领域，并公开了光信号复用方法和光复用器。 本发明提供的方法包括：调整要复用的四个光信号中的两个的偏振态，并优选地相互正交于其余两个光信号的偏振状态; 将经调整的偏振状态的一个光信号与未调整偏振状态的一个光信号通过偏振复用组合成一个光信号; 并将通过偏振复用获得的两个光信号组合成一个光信号。 当根据本发明的解决方案进行多路复用时，所有光信号基于偏振复用复用成一个光信号，由不同光信号传播的光路略有不同，光功率和光场能量分布之间略有不同， 最终复用光信号中的不同光信号。

公开(公告)号：US20160036548A1

公开(公告)日：2016-02-04

申请号：US14880069

申请日：2015-10-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xiaolu Song ,  Li Zeng

IPC: H04J14/02

CPC classification number: H04J14/02 ,  H04B10/506

Abstract: The present invention relates to a multicarrier-based optical transmit subsystem and a method for generating an optical signal. The multicarrier-based optical transmit subsystem includes: a comb-shaped light source apparatus, configured to generate and output polychromatic light; a microring group, including multiple microring modulators, where each of the multiple microring modulators includes an input end and a download end, the input end of each of the multiple microring modulators is connected to the comb-shaped light source apparatus, and the multiple microring modulators each are configured to filter and modulate the polychromatic light, to obtain optical signals with different frequencies, and output the optical signals by using respective download ends of the multiple microring modulators; and a public waveguide, connected to the download ends of the multiple microring modulators, and configured to multiplex the optical signals with different frequencies. Structure of the multicarrier-based optical transmit subsystem is simplified, thereby reducing a cost.

Abstract translation: 本发明涉及一种基于多载波的光发射子系统和一种用于产生光信号的方法。 基于多载波的光发射子系统包括：梳状光源装置，被配置为产生和输出多色光; 包括多个微环调制器的微环组，其中多个微环调制器中的每一个包括输入端和下载端，多个微环调制器中的每一个的输入端连接到梳状光源装置，并且多微环 每个调制器被配置为对多色光进行滤波和调制，以获得具有不同频率的光信号，并通过使用多个微环调制器的相应下载端输出光信号; 以及连接到多个微环调制器的下载端的公共波导，并且被配置为对具有不同频率的光信号进行多路复用。 简化了基于多载波的光传输子系统的结构，从而降低了成本。