Patents by Inventor Michikazu Kosuge

Michikazu Kosuge 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 coupling and alignment device
    Patent number: 6856749
    Abstract: An optical device, such as optical coupling devices, optical switches, optical isolators, optical attenuators, laser diodes, photo diodes are provided having a substrate with a groove in order to locate a optical fiber. A lens, such as a graded index lens, is secured to the end of the optical fiber, with the lens located outside the groove, thereby avoiding difficulties with axial alignment of the lens caused by the interface of the optical fiber to the lens. In one implementation, the groove in the prototype is a V-groove, thereby providing stable positioning of the optical fiber within the groove.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: February 15, 2005
    Assignee: Fitel Technologies, Inc.
    Inventors: Michikazu Kosuge, Hirokazu Tamura
  • Optical coupling and alignment device
    Publication number: 20040071430
    Abstract: An optical device, such as optical coupling devices, optical switches, optical isolators, optical attenuators, laser diodes, photo diodes are provided having a substrate with a groove in order to locate a optical fiber. A lens, such as a graded index lens, is secured to the end of the optical fiber, with the lens located outside the groove, thereby avoiding difficulties with axial alignment of the lens caused by the interface of the optical fiber to the lens. In one implementation, the groove in the prototype is a V-groove, thereby providing stable positioning of the optical fiber within the groove.
    Type: Application
    Filed: October 10, 2002
    Publication date: April 15, 2004
    Applicant: Fitel Technologies, Inc.
    Inventors: Michikazu Kosuge, Hirokazu Tamura