Patents by Inventor Eiichi Sakurai

Eiichi Sakurai 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).

  • Variable dispersion compensator and substrate for the same
    Publication number: 20030123800
    Abstract: An optical dispersion compensator comprises a heater unit for heating a fiber grating, a heater controller and a Peltier controller. The fiber grating heater unit includes heater elements formed in line on a quartz substrate and a fiber grating arranged on the heater elements. The fiber grating is secured on the quartz substrate using a cap. A step is formed in the quartz substrate to position the cap relative to the heater elements. The fiber grating is inserted into a groove in the cap to position the fiber grating relative to the heater elements.
    Type: Application
    Filed: June 17, 2002
    Publication date: July 3, 2003
    Inventors: Minoru Hashimoto, Kiichi Yoshiara, Takuya Ohhira, Sadayuki Matsumoto, Eiichi Sakurai, Takashi Hashimoto