Patents by Inventor Qichao Ding

Qichao Ding 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).

  • Method and system for controlling wavelengths of multi-path laser
    Patent number: 7961766
    Abstract: A method for controlling wavelengths of a multi-path laser is provided. The method includes: obtaining a difference between an actual output wavelength and a target output wavelength of each laser (S601); obtaining a corrected control amount of a temperature controller of each laser by decoupling calculation according to the difference (S602); and determining a die temperature of each laser according to the corrected control amount of the temperature controller (S603). A system for controlling wavelengths of a multi-path laser includes a multi-path laser (10), a difference module (12), a decoupling module (14), and a temperature control module (16).
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: June 14, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Haiqing Chen, Qichao Ding, Hongpin Zhang
  • METHOD AND SYSTEM FOR CONTROLLING WAVELENGTHS OF MULTI-PATH LASER
    Publication number: 20100142572
    Abstract: A method for controlling wavelengths of a multi-path laser is provided. The method includes: obtaining a difference between an actual output wavelength and a target output wavelength of each laser (S601); obtaining a corrected control amount of a temperature controller of each laser by decoupling calculation according to the difference (S602); and determining a die temperature of each laser according to the corrected control amount of the temperature controller (S603). A system for controlling wavelengths of a multi-path laser includes a multi-path laser (10), a difference module (12), a decoupling module (14), and a temperature control module (16).
    Type: Application
    Filed: January 7, 2010
    Publication date: June 10, 2010
    Applicant: Huawei Technologies Co., Ltd.
    Inventors: Haiqing Chen, Qichao Ding, Hongping Zhang