Patents by Inventor Kazuhise Uomi

Kazuhise Uomi 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).

  • Wavelength tunable optical transmitter and optical transceiver
    Patent number: 7733929
    Abstract: A wavelength tunable laser module for DWDM is used, in which a single electroabsorption modulator integrated laser is mounted and an oscillation wavelength is made tunable by temperature control. Driving conditions of a laser and a modulator are determined such that they have approximately the same modulation and transmission characteristics in a temperature control range. Such an electroabsorption modulator integrated laser is used and the driving conditions are incorporated, thereby a small, inexpensive wavelength tunable optical transmitter can be provided.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 8, 2010
    Assignee: Opnext Japan, Inc.
    Inventors: Noriko Sasada, Kazuhiko Naoe, Kazuhise Uomi, Masanobu Okayasu
  • Wavelength tunable optical transmitter and optical transceiver
    Publication number: 20070081565
    Abstract: A wavelength tunable laser module for DWDM is used, in which a single electroabsorption modulator integrated laser is mounted and an oscillation wavelength is made tunable by temperature control. Driving conditions of a laser and a modulator are determined such that they have approximately the same modulation and transmission characteristics in a temperature control range. Such an electroabsorption modulator integrated laser is used and the driving conditions are incorporated, thereby a small, inexpensive wavelength tunable optical transmitter can be provided.
    Type: Application
    Filed: June 14, 2006
    Publication date: April 12, 2007
    Inventors: Noriko Sasada, Kazuhiko Naoe, Kazuhise Uomi, Masanobu Okayasu