Patents by Inventor Sadayoshi Kanemaru

Sadayoshi Kanemaru 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).

  • Semiconductor laser element, semicondutor laser module, fabrication method thereof and amplifier for optical fiber
    Publication number: 20030007534
    Abstract: A semiconductor laser element comprising a first stripe and a second stripe which are formed at a distance, and emits a first laser beams and a second laser beams from end surfaces of the first stripe and the second stripe; a first lens to separate the distance between the first laser beams and the second laser beams emitted from the semiconductor laser element; a half-wave plate which rotates the plane of polarization of the first laser beams by 90 degrees; a polarization beam combiner which multiplexes the first laser beams and the second laser beams which are entered, and emits both the laser beams; and an optical fiber which receives the laser beams emitted from the polarization beam combiner, and sends them to the outside are included.
    Type: Application
    Filed: December 17, 2001
    Publication date: January 9, 2003
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Sadayoshi Kanemaru, Toshio Kimura, Takeo Shimizu, Takeshi Aikiyo, Naoki Tsukiji