Patents by Inventor Stephanus Gerardus Fransiscus Geerings

Stephanus Gerardus Fransiscus Geerings 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).

  • High-bandwidth, radiation-resistant multimode optical fiber
    Patent number: 9405062
    Abstract: A multimode optical fiber includes a central core and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a depressed, central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r1, and a maximum refractive index difference ?n1 with respect to the outer cladding. The central core's alpha-index profile has a minimum refractive index at the central core's outer radius r1 that corresponds to a refractive index difference ?nend with respect to the outer cladding. Exemplary optical-fiber embodiments may include an inner cladding having an outer radius r2 and a width w2. Exemplary optical-fiber embodiments may include a buried trench having a width w3 and an outer radius r3. Furthermore, exemplary optical-fiber embodiments may include an intermediate cladding having an outer radius r4 and a width w4.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: August 2, 2016
    Assignee: Draka Comteq B.V.
    Inventors: Gertjan Krabshuis, Adrian Amezcua-Correa, Frans Gooijer, Gilles Melin, Gerard Kuyt, Franciscus Johannes Achten, Stephanus Gerardus Fransiscus Geerings, Marianne Bigot-Astruc
  • High-Bandwidth, Radiation-Resistant Multimode Optical Fiber
    Publication number: 20120275751
    Abstract: A multimode optical fiber includes a central core and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a depressed, central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r1, and a maximum refractive index difference ?n1 with respect to the outer cladding. The central core's alpha-index profile has a minimum refractive index at the central core's outer radius r1 that corresponds to a refractive index difference ?nend with respect to the outer cladding. Exemplary optical-fiber embodiments may include an inner cladding having an outer radius r2 and a width w2. Exemplary optical-fiber embodiments may include a buried trench having a width w3 and an outer radius r3. Furthermore, exemplary optical-fiber embodiments may include an intermediate cladding having an outer radius r4 and a width w4.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Gertjan Krabshuis, Adrian Amezcua-Correa, Frans Gooijer, Gilles Melin, Gerard Kuyt, Franciscus Johannes Achten, Stephanus Gerardus Fransiscus Geerings, Marianne Bigot-Astruc
  • DEUTERIUM TREATMENT METHOD FOR OPTICAL FIBRES
    Publication number: 20100251775
    Abstract: A treatment method for an optical fibre including the steps of exposing the fibre to an atmosphere containing deuterium at a given temperature, concentration and pressure, measuring the attenuation in the fibre as a function of time at least one wavelength, during the exposure of the fibre to an atmosphere containing deuterium, identifying an attenuation maximum after an exposure duration, and stopping the exposure of the fibre to the atmosphere containing deuterium when said duration has elapsed.
    Type: Application
    Filed: March 22, 2010
    Publication date: October 7, 2010
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Elise Regnier, Frans Gooijer, Stephanus Gerardus Fransiscus Geerings, Ekaterina Burov, Aurelien Bergonzo, Alain Pastouret