-
公开(公告)号：US11095386B2
公开(公告)日：2021-08-17
申请号：US15931714
申请日：2020-05-14
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Andrea Melloni , Francesco Morichetti , Ruiqiang Ji , Douglas Aguiar , Maziyar Milanizadeh , Sujie Zhou , Yanbo Li , Long Luo , Li Zeng
Abstract: An ADD/DROP filter and an optical add/drop multiplexer are disclosed. An ADD/DROP filter includes an input port, an output port, an add port connecting to a modulator, and a drop port. The modulator is configured to load a pilot signal to a first optical signal to obtain a second optical signal, and transmit the second optical signal to the add port. A third optical signal is input to the input port. A wavelength difference between the second optical signal and the third optical signal is an integral multiple of a free spectral range. A power detector is connected to the output port and/or the drop port. The power detector is configured to obtain an output optical signal from the output port or the drop port and detect an optical power of the output optical signal.
-
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.
-
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.
-
公开(公告)号：US12270944B2
公开(公告)日：2025-04-08
申请号：US17224974
申请日：2021-04-07
Applicant: Huawei Technologies Co., Ltd.
Abstract: Embodiments of this application provide a laser scanning apparatus, which is a key component of a Lidar and may be used in fields such as autonomous driving and intelligent driving. The scanning apparatus includes: a scanning micromirror chip, a packaging shell, and a packaging component. The scanning micromirror chip includes a scanning micromirror and a laser, where the scanning micromirror and the laser are integrated at different positions of the scanning micromirror chip. The packaging shell is located on the scanning micromirror chip, and forms a hollow structure together with the scanning micromirror chip. Both the laser and the packaging component are located in the hollow structure. In addition, the packaging component is fixed on the packaging shell, and is configured to collimate and reflect a beam emitted by the laser, and emit an output beam to the scanning micromirror.
-
公开(公告)号：US11522341B2
公开(公告)日：2022-12-06
申请号：US16877707
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jialin Zhao , Wei Chen , Li Zeng
IPC: H01S5/10 , H01S5/02 , H01S5/026 , H01S5/068 , H01S5/14 , H01S5/50 , H04B10/50 , H01S5/024 , H01S3/06
Abstract: A tunable laser includes a reflective semiconductor optical amplifier (SOA), a grating codirectional coupler, and a reflective microring resonator. The grating codirectional coupler and the reflective microring resonator are both formed on a silicon base. An anti-reflection film is disposed on a first end surface of the reflective SOA, and the first end surface is an end surface, coupled to a first waveguide of the grating codirectional coupler, of the reflective SOA. A second waveguide of the grating codirectional coupler is coupled to the first waveguide, a first grating is disposed on the first waveguide, a second grating disposed opposite to the first grating is disposed on the second waveguide, and the first grating and the second grating constitute a narrow-band pass filter. The second waveguide is connected to the reflective microring resonator.
-
Patent Agency Ranking
公开(公告)号：US10921534B2
公开(公告)日：2021-02-16
申请号：US16692041
申请日：2019-11-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhen Dong , Jun Liu , Li Zeng , Qing Zhao , Xiaolu Song
IPC: G02B6/42
Abstract: An optical module structure includes a substrate, an optical chip and an electrical chip that are fixedly coupled to the substrate. The optical module structure further includes an optical coupling structure fixedly coupled to the optical chip. A side of the optical chip that faces the substrate has a first reference plane, and at least one first alignment mark is provided on the first reference plane. The optical coupling structure has a second reference plane, and at least one second alignment mark is provided on the second reference plane. The first reference plane is aligned with the second reference plane, and the first alignment mark is aligned with the second alignment mark.
-
公开(公告)号：US20200280172A1
公开(公告)日：2020-09-03
申请号：US16877707
申请日：2020-05-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jialin Zhao , Wei Chen , Li Zeng
Abstract: A tunable laser includes a reflective semiconductor optical amplifier (SOA), a grating codirectional coupler, and a reflective microring resonator. The grating codirectional coupler and the reflective microring resonator are both formed on a silicon base. An anti-reflection film is disposed on a first end surface of the reflective SOA, and the first end surface is an end surface, coupled to a first waveguide of the grating codirectional coupler, of the reflective SOA. A second waveguide of the grating codirectional coupler is coupled to the first waveguide, a first grating is disposed on the first waveguide, a second grating disposed opposite to the first grating is disposed on the second waveguide, and the first grating and the second grating constitute a narrow-band pass filter. The second waveguide is connected to the reflective microring resonator.
-
公开(公告)号：US20200096715A1
公开(公告)日：2020-03-26
申请号：US16692041
申请日：2019-11-22
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zhen Dong , Jun Liu , Li Zeng , Qing Zhao , Xiaolu Song
IPC: G02B6/42
Abstract: An optical module structure includes a substrate, an optical chip and an electrical chip that are fixedly coupled to the substrate. The optical module structure further includes an optical coupling structure fixedly coupled to the optical chip. A side of the optical chip that faces the substrate has a first reference plane, and at least one first alignment mark is provided on the first reference plane. The optical coupling structure has a second reference plane, and at least one second alignment mark is provided on the second reference plane. The first reference plane is aligned with the second reference plane, and the first alignment mark is aligned with the second alignment mark.
-
公开(公告)号：US09954644B2
公开(公告)日：2018-04-24
申请号：US14891778
申请日：2013-01-04
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
CPC classification number: H04L1/0041 , G06F11/10 , H04L1/0045 , H04L1/0057 , H04L25/14 , H04L25/49
Abstract: Embodiments of the present invention disclose an Ethernet data processing method, an Ethernet physical layer chip, and Ethernet equipment. Applicable to data processing at a transmit end, the method includes: performing line coding on data from a media access control layer, so as to obtain serial data code blocks; performing forward error correction FEC coding on the serial data code blocks, so as to obtain FEC frames, which specifically includes: inserting Y check bits every X consecutive data bits, where the Y check bits are generated when FEC coding is performed on the X consecutive data bits; and distributing, at a distribution granularity of a bits, the FEC frames successively to N virtual channels, where a and N are both positive integers, and a is less than a quantity of bits included in one FEC frame.
-
公开(公告)号：US20240361431A1
公开(公告)日：2024-10-31
申请号：US18758809
申请日：2024-06-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Cheng Xu , Hongbiao Gao , Li Zeng
IPC: G01S7/48 , G01S7/4913 , G01S7/493 , G01S17/34
CPC classification number: G01S7/4802 , G01S7/4913 , G01S7/493 , G01S17/34
Abstract: A sending apparatus, detection system, and detection method of a lidar are configured to exclude a false target from a plurality of targets. Frequency-sweep optical signals with different slopes are introduced, the frequency-sweep slopes of the different frequency-sweep optical signals are opposite in sign in a time period, and absolute values of the frequency-sweep slopes are not equal. For a plurality of real targets, coherent detection is performed in at least two time periods separately corresponding to the different frequency-sweep optical signals.
-
-
-
-
-
-
-
-
-
Search Results
31
records
(took 0.026 seconds)
