Patents by Inventor Dai QIU

Dai QIU 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).

  • Optical transmitter and/or receiver including an EMI filter, and methods of using the same
    Patent number: 11165507
    Abstract: Embodiments of the disclosure pertain to an optical transmitter and/or receiver comprising an electrical signal generator configured to generate an electrical signal that is unshielded or unshieldable at a predetermined frequency, a filter downstream from the electrical signal generator configured to reduce an amplitude of electromagnetic interference (EMI) at the predetermined frequency below a predetermined maximum value, an interface through which the EMI can pass in the absence of the filter, and an optical component configured to receive the electrical signal or provide an input signal to the electrical signal generator. A method of reducing EMI in an optical transmitter and/or receiver using the electrical signal generator, the filter and the optical component is also disclosed.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: November 2, 2021
    Assignee: Source Photonics (Chengdu) Company, Ltd.
    Inventors: Li Yi, Dai Qiu, Dejun Xu, Chao Du
  • OPTICAL TRANSMITTER AND/OR RECEIVER INCLUDING AN EMI FILTER, AND METHODS OF USING THE SAME
    Publication number: 20210167865
    Abstract: Embodiments of the disclosure pertain to an optical transmitter and/or receiver comprising an electrical signal generator configured to generate an electrical signal that is unshielded or unshieldable at a predetermined frequency, a filter downstream from the electrical signal generator configured to reduce an amplitude of electromagnetic interference (EMI) at the predetermined frequency below a predetermined maximum value, an interface through which the EMI can pass in the absence of the filter, and an optical component configured to receive the electrical signal or provide an input signal to the electrical signal generator. A method of reducing EMI in an optical transmitter and/or receiver using the electrical signal generator, the filter and the optical component is also disclosed.
    Type: Application
    Filed: June 15, 2018
    Publication date: June 3, 2021
    Inventors: Li YI, Dai QIU, Dejun XU, Chao DU