Patents by Inventor Takashi Kounosu

Takashi Kounosu 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).

  • Method to produce an optical module for analog data transmission
    Patent number: 8041519
    Abstract: A method to produce an optical module, in particular, a module to transmit an analog data to enhance a yield thereof is disclosed. The method comprises (a) taking an I-L characteristic and its slope efficiency, (b) taking a gradient of a linear approximation between the slope efficiency and a current applied to an LD, and (c) taking an optimum current for the CSO characteristic as varying the current. Steps (a) to (c) give a correlation between the gradient of the linear approximation and the optimum current and are performed in advance to the practical production.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: October 18, 2011
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Kounosu, Satoshi Yoshimura, Shin Satoh, Masaki Furumai
  • Method to produce an optical module for analog data transmission
    Publication number: 20090099797
    Abstract: A method to produce an optical module, in particular, a module to transmit an analog data to enhance a yield thereof is disclosed. The method comprises (a) taking an I-L characteristic and its slope efficiency, (b) taking a gradient of a linear approximation between the slope efficiency and a current applied to an LD, and (c) taking an optimum current for the CSO characteristic as varying the current. Steps (a) to (c) give a correlation between the gradient of the linear approximation and the optimum current and are performed in advance to the practical production.
    Type: Application
    Filed: September 23, 2008
    Publication date: April 16, 2009
    Inventors: Takashi Kounosu, Satoshi Yoshimura, Shin Satoh, Masaki Furumai