Patents by Inventor Zhijuan TU

Zhijuan TU 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).

  • Coherent detection implementing apparatus, system and method
    Patent number: 11569916
    Abstract: Provided is a coherent detection implementing apparatus, system and method. The apparatus includes: a first transceiver unit, configured to send an optical signal in a first direction to a second device, wherein the optical signal in the first direction includes a direct current optical signal with a first wavelength and a modulated optical signal with a second wavelength; and configured to receive an optical signal in a second direction from the second device; and a first coherent receiver, connected with the first transceiver unit, and configured to take a part of the direct current optical signal with the first wavelength in the optical signal in the first direction as a Local Oscillator (LO) light for coherent reception, perform coherent frequency mixing between the LO light and the optical signal in the second direction, and demodulate the optical signal in the second direction.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: January 31, 2023
    Assignee: ZTE CORPORATION
    Inventors: Zhijuan Tu, Junwen Zhang, Xingang Huang, Mingsheng Li
  • Coherent Detection Implementing Apparatus, System and Method
    Publication number: 20210320723
    Abstract: Provided is a coherent detection implementing apparatus, system and method. The apparatus includes: a first transceiver unit, configured to send an optical signal in a first direction to a second device, wherein the optical signal in the first direction includes a direct current optical signal with a first wavelength and a modulated optical signal with a second wavelength; and configured to receive an optical signal in a second direction from the second device; and a first coherent receiver, connected with the first transceiver unit, and configured to take a part of the direct current optical signal with the first wavelength in the optical signal in the first direction as a Local Oscillator (LO) light for coherent reception, perform coherent frequency mixing between the LO light and the optical signal in the second direction, and demodulate the optical signal in the second direction.
    Type: Application
    Filed: August 27, 2019
    Publication date: October 14, 2021
    Inventors: Zhijuan TU, Junwen ZHANG, Xingang HUANG, Mingsheng LI