Patents by Inventor Jiangwei Man

Jiangwei Man has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11750956
    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.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: September 5, 2023
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shengmeng Fu, Yu Xiong, Jiangwei Man, Chengyan Wang, Xiaofei Zeng, Li Zeng
  • Publication number: 20220174379
    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.
    Type: Application
    Filed: December 13, 2021
    Publication date: June 2, 2022
    Inventors: Shengmeng FU, Yu XIONG, Jiangwei MAN, Chengyan WANG, Xiaofei ZENG, Li ZENG
  • Patent number: 11228823
    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.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: January 18, 2022
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shengmeng Fu, Yu Xiong, Jiangwei Man, Chengyan Wang, Xiaofei Zeng, Li Zeng
  • Publication number: 20210152901
    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.
    Type: Application
    Filed: November 19, 2020
    Publication date: May 20, 2021
    Inventors: Shengmeng FU, Yu XIONG, Jiangwei MAN, Chengyan WANG, Xiaofei ZENG, Li ZENG
  • Patent number: 10887677
    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.
    Type: Grant
    Filed: July 23, 2019
    Date of Patent: January 5, 2021
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shengmeng Fu, Yu Xiong, Jiangwei Man, Chengyan Wang, Xiaofei Zeng, Li Zeng
  • Publication number: 20190349655
    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.
    Type: Application
    Filed: July 23, 2019
    Publication date: November 14, 2019
    Inventors: Shengmeng FU, Yu XIONG, Jiangwei MAN, Chengyan WANG, Xiaofei ZENG, Li ZENG
  • Publication number: 20190081708
    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.
    Type: Application
    Filed: November 9, 2018
    Publication date: March 14, 2019
    Inventors: Shengmeng Fu, Hongguang Zhang, Jiangwei Man, Jianhe Gao
  • Patent number: 10230486
    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.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: March 12, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Jiangwei Man, Xiaolu Song, Li Zeng
  • Publication number: 20180054273
    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.
    Type: Application
    Filed: October 13, 2017
    Publication date: February 22, 2018
    Inventors: Jiangwei Man, Xiaolu Song, Li Zeng
  • Publication number: 20170286250
    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 commun
    Type: Application
    Filed: June 23, 2017
    Publication date: October 5, 2017
    Inventors: Wei Chen, Jiangwei Man, Li Zeng