Patents by Inventor Zhi-Zheng Feng

Zhi-Zheng Feng 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).

  • Single fiber mach-zehnder filter and method of manufacturing the same
    Patent number: 8457460
    Abstract: The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: June 4, 2013
    Assignee: National United University
    Inventors: Nan-Kuang Chen, Zhi-Zheng Feng
  • SINGLE-FIBER MACH-ZEHNDER FILTER AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20110305418
    Abstract: The present invention provides a method for producing a Mach-Zehnder filtering device. The method includes the following steps: (a) providing an optical fiber having a jacket and a core containing rare earth element dopants; (b) stripping the jacket of a segment of the optical fiber; and (c) performing a fused-tapering to the stripped segment of the optical fiber to form a first and a second necks simultaneously, wherein the core exists in both the first and the second necks to form a Mach-Zehnder interferometer.
    Type: Application
    Filed: December 8, 2010
    Publication date: December 15, 2011
    Applicant: NATIONAL UNITED UNIVERSITY
    Inventors: Nan-Kuang Chen, Zhi-Zheng Feng