Patents Assigned to BEIJING ZHONGKE GUOGUANG QUANTUM TECHNOLOGY CO., LTD.
  • Integrated self-coherent receiving optical chip based on round-trip delay interferometers
    Patent number: 11949461
    Abstract: The present application discloses an integrated self-coherent receiving optical chip based on round-trip delay interferometers, including a first beam splitter, a multi-port circulator array, a first round-trip delay interferometer and a second round-trip delay interferometer integrated on a same substrate, wherein the first beam splitter is connected to the multi-port circulator array, and the multi-port circulator array is connected to the first round-trip delay interferometer and the second round-trip delay interferometer, respectively.
    Type: Grant
    Filed: June 19, 2023
    Date of Patent: April 2, 2024
    Assignee: BEIJING ZHONGKE GUOGUANG QUANTUM TECHNOLOGY CO., LTD.
    Inventors: Yibo Zhao, Dong Wang, Dongsheng Chen
  • Self-coherent receiver based on polarization-independent delay interferometers
    Patent number: 11923909
    Abstract: Disclosed is a self-coherent receiver based on polarization-independent delay interferometers, relating to a technical field of optical communication, including a first beam splitter, a first circulator, a second circulator, a first polarization-independent delay interferometer, a second polarization-independent delay interferometer, a first balanced detector, a second balanced detector and an electrical signal processing module.
    Type: Grant
    Filed: June 20, 2023
    Date of Patent: March 5, 2024
    Assignee: BEIJING ZHONGKE GUOGUANG QUANTUM TECHNOLOGY CO., LTD.
    Inventors: Yibo Zhao, Dong Wang, Dongsheng Chen
  • Polarization independent DQPSK demodulation integrated optical chip
    Patent number: 11888531
    Abstract: The application discloses a polarization independent DQPSK demodulation integrated optical chip, which comprises a first beam splitter, a first polarization beam splitter rotator, a second beam splitter, a third beam splitter, a first quarter-wave plate, a first delayed optical waveguide, and a second polarization beam splitter rotator that are integrated on a same substrate.
    Type: Grant
    Filed: September 20, 2023
    Date of Patent: January 30, 2024
    Assignee: BEIJING ZHONGKE GUOGUANG QUANTUM TECHNOLOGY CO., LTD.
    Inventors: Yibo Zhao, Dong Wang, Dongsheng Chen