Patents by Inventor Yongshi Gu

Yongshi Gu 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).

  • BLIND PUMP LASER DETECTION
    Publication number: 20230361525
    Abstract: An EDFA may include an input photodiode configured to generate a control signal based on an input signal. The EDFA may include a blind stage configured to generate an amplified signal based on the control signal and the input signal. The EDFA may include a non-blind stage configured to generate an output signal based on the amplified signal within the blind stage, the control signal, and a feedback signal. The EDFA may include a filter configured to generate a filtered signal based on the output signal. The EDFA may include an output photodiode configured to generate the feedback signal based on the filtered signal. The EDFA may include an alarm device. A signal within the non-blind stage may be generated based on the feedback signal and the control signal. The alarm device may be configured to generate an alarm signal when the signal exceeds a threshold value.
    Type: Application
    Filed: May 3, 2023
    Publication date: November 9, 2023
    Inventors: Zhiqian ZHU, Ian Peter McClean, Yongjun FU, Yongshi GU
  • Blind pump laser detection
    Patent number: 11677209
    Abstract: An EDFA may include an input photodiode configured to generate a control signal based on an input signal. The EDFA may include a blind stage configured to generate an amplified signal based on the control signal and the input signal. The EDFA may include a non-blind stage configured to generate an output signal based on the amplified signal within the blind stage, the control signal, and a feedback signal. The EDFA may include a filter configured to generate a filtered signal based on the output signal. The EDFA may include an output photodiode configured to generate the feedback signal based on the filtered signal. The EDFA may include an alarm device. A signal within the non-blind stage may be generated based on the feedback signal and the control signal. The alarm device may be configured to generate an alarm signal when the signal exceeds a threshold value.
    Type: Grant
    Filed: June 16, 2020
    Date of Patent: June 13, 2023
    Assignee: II-VI DELAWARE, INC.
    Inventors: Zhiqian Zhu, Ian Peter McClean, Yongjun Fu, Yongshi Gu
  • BLIND PUMP LASER DETECTION
    Publication number: 20210184420
    Abstract: An EDFA may include an input photodiode configured to generate a control signal based on an input signal. The EDFA may include a blind stage configured to generate an amplified signal based on the control signal and the input signal. The EDFA may include a non-blind stage configured to generate an output signal based on the amplified signal within the blind stage, the control signal, and a feedback signal. The EDFA may include a filter configured to generate a filtered signal based on the output signal. The EDFA may include an output photodiode configured to generate the feedback signal based on the filtered signal. The EDFA may include an alarm device. A signal within the non-blind stage may be generated based on the feedback signal and the control signal. The alarm device may be configured to generate an alarm signal when the signal exceeds a threshold value.
    Type: Application
    Filed: June 16, 2020
    Publication date: June 17, 2021
    Inventors: Zhiqian Zhu, Ian Peter McClean, Yongjun Fu, Yongshi Gu