Patents by Inventor Gongyuan ZHAO

Gongyuan ZHAO 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).

  • DISTRIBUTED FEEDBACK LASER
    Publication number: 20170256905
    Abstract: A distributed feedback laser, including: an output end including an active region including a grating including a ?/4 phase-shift region; and a non-output end including a reflecting region including a grating with uniform period. The length of the active region is smaller than or equal to 200 ?m. The end facet of the output end of the laser is coated with an anti-reflection film.
    Type: Application
    Filed: May 16, 2017
    Publication date: September 7, 2017
    Inventors: Weihua GUO, Gongyuan ZHAO, Qiaoyin LU