Patents by Inventor Kumiko Nishimura

Kumiko Nishimura 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).

  • Wide-band optical amplifier, optical pulse generator, and optical instrument
    Patent number: 8248687
    Abstract: There is provided a wide-band optical amplifier (10) that is capable of amplifying a wide-band signal. The wide-band optical amplifier (10) includes a first amplifier (NOPA1) that emits, based on a to-be-amplified light beam having a predetermined range of wavelengths and a first pump beam (L2) having a first wavelength, the to-be-amplified light beam having a first range of amplified wavelengths, where the first range is a part of the predetermined range, and a second amplifier (NOPA2) that emits, based on the to-be-amplified light beam having the first range of amplified wavelengths and a second pump beam (L3) having a second wavelength different from the first wavelength, the to-be-amplified light beam having a second range of amplified wavelengths, where the second range is different from the first range.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: August 21, 2012
    Assignee: Nikon Corporation
    Inventor: Kumiko Nishimura
  • WIDE-BAND OPTICAL AMPLIFIER, OPTICAL PULSE GENERATOR, AND OPTICAL INSTRUMENT
    Publication number: 20110013265
    Abstract: There is provided a wide-band optical amplifier (10) that is capable of amplifying a wide-band signal. The wide-band optical amplifier (10) includes a first amplifier (NOPA1) that emits, based on a to-be-amplified light beam having a predetermined range of wavelengths and a first pump beam (L2) having a first wavelength, the to-be-amplified light beam having a first range of amplified wavelengths, where the first range is a part of the predetermined range, and a second amplifier (NOPA2) that emits, based on the to-be-amplified light beam having the first range of amplified wavelengths and a second pump beam (L3) having a second wavelength different from the first wavelength, the to-be-amplified light beam having a second range of amplified wavelengths, where the second range is different from the first range.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 20, 2011
    Inventor: Kumiko NISHIMURA