Patents by Inventor Yongjing Cheng

Yongjing Cheng 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 demodulator
    Patent number: 8411350
    Abstract: The embodiments of the present invention provides an optical demodulator, which includes a first reflective mirror, a second reflective mirror, a third reflective mirror, and an optical splitter. The optical splitter is configured to: split input light for the first time; split for the second time a first path of light reflected back by the first reflective mirror, where two paths of light obtained by splitting the first path of light are emitted to the first reflective mirror and the third reflective mirror respectively, split for the second time a second path of light reflected back by the second reflective mirror, where two paths of light obtained by splitting the second path of light are emitted to the first reflective mirror and the third reflective mirror respectively.
    Type: Grant
    Filed: December 28, 2011
    Date of Patent: April 2, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhenghua Fu, Xiquan Dai, Yongjing Cheng
  • OPTICAL DEMODULATOR
    Publication number: 20120099183
    Abstract: The embodiments of the present invention provides an optical demodulator, which includes a first reflective mirror, a second reflective mirror, a third reflective mirror, and an optical splitter. The optical splitter is configured to: split input light for the first time; split for the second time a first path of light reflected back by the first reflective mirror, where two paths of light obtained by splitting the first path of light are emitted to the first reflective mirror and the third reflective mirror respectively, split for the second time a second path of light reflected back by the second reflective mirror, where two paths of light obtained by splitting the second path of light are emitted to the first reflective mirror and the third reflective mirror respectively.
    Type: Application
    Filed: December 28, 2011
    Publication date: April 26, 2012
    Inventors: Zhenghua FU, Xiquan Dai, Yongjing Cheng