Patents by Inventor Quanan CHEN

Quanan CHEN 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).

  • Tunable laser and tuning method using the same
    Patent number: 9853418
    Abstract: A tunable laser, including: a gain section configured to provide an optical gain for lasing; a multi-channel splitter section configured to split an input signal into multiple outputs; and a multi-channel reflection section, the multi-channel reflection section including multiple arms of unequal lengths and configured to provide an optical feedback and a mode selection function for the laser to work. The gain section, the multi-channel splitter section, and the multi-channel reflection section are sequentially connected in that order. The facet of the gain section away from the multi-channel splitter section is an optical output facet of the laser. When arranging the multiple arms of the multi-channel reflection section in an order according to their lengths, length difference between adjacent arms are unequal. Facets of the multiple arms away from the multi-channel splitter section are coated with reflection films.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: December 26, 2017
    Assignees: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Weihua Guo, Quanan Chen, Qiaoyin Lu
  • TUNABLE LASER AND TUNING METHOD USING THE SAME
    Publication number: 20170163008
    Abstract: A tunable laser, including: a gain section configured to provide an optical gain for lasing; a multi-channel splitter section configured to split an input signal into multiple outputs; and a multi-channel reflection section, the multi-channel reflection section including multiple arms of unequal lengths and configured to provide an optical feedback and a mode selection function for the laser to work. The gain section, the multi-channel splitter section, and the multi-channel reflection section are sequentially connected in that order. The facet of the gain section away from the multi-channel splitter section is an optical output facet of the laser. When arranging the multiple arms of the multi-channel reflection section in an order according to their lengths, length difference between adjacent arms are unequal. Facets of the multiple arms away from the multi-channel splitter section are coated with reflection films.
    Type: Application
    Filed: February 22, 2017
    Publication date: June 8, 2017
    Inventors: Weihua GUO, Quanan CHEN, Qiaoyin LU