The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2020
Filed:
Apr. 06, 2016
Lios Technology Gmbh, Cologne, DE;
NKT PHOTONICS GMBH, Cologne, DE;
Abstract
Device for monitoring a submarine cable () comprising at least one optical fiber () which is arranged in or on the submarine cable (), at least one laser light source (), the light of which can be coupled into the optical fiber (), wherein portions of the light back-scattered in the optical fiber () can be coupled out from the optical fiber (), detection and evaluation means () capable of detecting the back-scattered light and determining from the detected light spatially resolved the temperature of the optical fiber (), detection means () for the electric current flowing in the submarine cable (), evaluation means () capable of storing the time profile of the detected temperature and the time profile of the detected electric, wherein the evaluation means () 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 () and inferring from the spatially resolved determined thermal resistance of the soil the cover height of the submarine cable ().