Patents by Inventor Ichii KENTARO

Ichii KENTARO 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).

  • Optical fiber sensor
    Patent number: 11473943
    Abstract: An optical fiber sensor includes an optical fiber. The optical fiber includes a cladding having a cladding refractive index, and a plurality of fiber cores embedded in the cladding and extending along a longitudinal axis of the optical fiber. The plurality of fiber cores include a first subset of at least one first fiber core and a second subset of at least one second fiber core. The at least one first fiber core has a first core refractive index different from the cladding refractive index and a first core radius in a direction transverse to the longitudinal axis. The at least one second fiber core has a second core refractive index different from the cladding refractive index and a second core radius transverse to the longitudinal axis. The second core refractive index and the second core radius differ from the first core refractive index and the first core radius such that a temperature sensitivity of the at least one second fiber core differs from the temperature sensitivity of the first fiber core.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: October 18, 2022
    Assignees: FUJIKURA LTD., KONINKLIJKE PHILIPS N.V.
    Inventors: Jeroen Jan Lambertus Horikx, Gert Wim 'T Hooft, Anna Hendrika Van Dusschoten, Shingo Matsushita, Ichii Kentaro
  • OPTICAL FIBER SENSOR
    Publication number: 20210223030
    Abstract: An optical fiber sensor includes an optical fiber. The optical fiber includes a cladding having a cladding refractive index, and a plurality of fiber cores embedded in the cladding and extending along a longitudinal axis of the optical fiber. The plurality of fiber cores include a first subset of at least one first fiber core and a second subset of at least one second fiber core. The at least one first fiber core has a first core refractive index different from the cladding refractive index and a first core radius in a direction transverse to the longitudinal axis. The at least one second fiber core has a second core refractive index different from the cladding refractive index and a second core radius transverse to the longitudinal axis. The second core refractive index and the second core radius differ from the first core refractive index and the first core radius such that a temperature sensitivity of the at least one second fiber core differs from the temperature sensitivity of the first fiber core.
    Type: Application
    Filed: March 19, 2021
    Publication date: July 22, 2021
    Inventors: Jeroen Jan Lambertus HORIKX, Gert Wim 'T HOOFT, Anna Hendrika VAN DUSSCHOTEN, Shingo MATSUSHITA, Ichii KENTARO