Patents by Inventor Sudo Masaaki

Sudo Masaaki 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).

  • Fiber type optical component
    Patent number: 6594423
    Abstract: A fiber type optical component in which nonuniform increase of refractive index is restricted to a minimum in an optical fiber to which light sensitive material is added to the cladding section and the cladding section of the optical fiber, by forming the optical fiber such that the outermost diameter of the light sensitive layer of the optical fiber is twice as large as the mode field diameter or more, or more preferably 2.5 times as large as the mode field diameter, and by forming slant type optical fiber grating by this optical fiber, it is possible to realize the fiber type optical component in which the bandwidth of transmittance loss is narrow and steep in the reflection restricting angle with filtering ability having large transmittance loss.
    Type: Grant
    Filed: August 21, 2002
    Date of Patent: July 15, 2003
    Assignee: Fujikura Ltd.
    Inventors: Akira Sakamoto, Satoshi Okude, Sudo Masaaki
  • Fiber type optical component
    Publication number: 20030063857
    Abstract: A fiber type optical component in which nonuniform increase of refractive index is restricted to a minimum in an optical fiber to which light sensitive material is added to the cladding section and the cladding section of the optical fiber, by forming the optical fiber such that the outermost diameter of the light sensitive layer of the optical fiber is twice as large as the mode field diameter or more, or more preferably 2.5 times as large as the mode field diameter, and by forming slant type optical fiber grating by this optical fiber, it is possible to realize the fiber type optical component in which the bandwidth of transmittance loss is narrow and steep in the reflection restricting angle with filtering ability having large transmittance loss.
    Type: Application
    Filed: August 21, 2002
    Publication date: April 3, 2003
    Applicant: Fujikura Ltd.
    Inventors: Akira Sakamoto, Satoshi Okude, Sudo Masaaki