Patents by Inventor Martin OLSCHEWSKI

Martin OLSCHEWSKI 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).

  • Method and device for monitoring a submarine cable
    Patent number: 10620245
    Abstract: Device for monitoring a submarine cable (1) comprising at least one optical fiber (2) which is arranged in or on the submarine cable (1), at least one laser light source (3), the light of which can be coupled into the optical fiber (2), wherein portions of the light back-scattered in the optical fiber (2) can be coupled out from the optical fiber (2), detection and evaluation means (5) capable of detecting the back-scattered light and determining from the detected light spatially resolved the temperature of the optical fiber (2), detection means (6) for the electric current flowing in the submarine cable (1), evaluation means (7) capable of storing the time profile of the detected temperature and the time profile of the detected electric, wherein the evaluation means (7) are capable of calculating from the time profiles of the temperature and the electric current spatially resolved the thermal resistance of the soil surrounding the submarine cable (1) and inferring from the spatially resolved determined therm
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: April 14, 2020
    Assignee: NKT PHOTONICS GMBH
    Inventors: Wieland Hill, Peter Schaefer, Martin Olschewski
  • Method and device for monitoring a submarine cable
    Publication number: 20160298960
    Abstract: Device for monitoring a submarine cable (1) comprising at least one optical fiber (2) which is arranged in or on the submarine cable (1), at least one laser light source (3), the light of which can be coupled into the optical fiber (2), wherein portions of the light back-scattered in the optical fiber (2) can be coupled out from the optical fiber (2), detection and evaluation means (5) capable of detecting the back-scattered light and determining from the detected light spatially resolved the temperature of the optical fiber (2), detection means (6) for the electric current flowing in the submarine cable (1), evaluation means (7) capable of storing the time profile of the detected temperature and the time profile of the detected electric, wherein the evaluation means (7) are capable of calculating from the time profiles of the temperature and the electric current spatially resolved the thermal resistance of the soil surrounding the submarine cable (1) and inferring from the spatially resolved determined therm
    Type: Application
    Filed: April 6, 2016
    Publication date: October 13, 2016
    Inventors: Wieland HILL, Peter SCHAEFER, Martin OLSCHEWSKI