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:
Nov. 05, 2019
Filed:
Jul. 14, 2017
Applicant:
Abb Schweiz Ag, Baden, CH;
Inventors:
Georg Müller, Glattpark, CH;
Klaus Bohnert, Oberrohrdorf, CH;
Andreas Frank, Zürich, CH;
Yang Lin, Widen, CH;
Assignee:
ABB Schweiz AG, Baden, CH;
Primary Examiner:
Int. Cl.
CPC ...
G01R 15/24 (2006.01); G02B 6/02 (2006.01); G02B 6/10 (2006.01);
U.S. Cl.
CPC ...
G01R 15/246 (2013.01); G02B 6/02333 (2013.01); G02B 6/02347 (2013.01); G02B 6/105 (2013.01);
Abstract
It is proposed to use a spun birefringent fiber for a current sensor or magnetic field sensor. The fiber has a birefringence that increases with temperature. In this case, the temperature dependence of the fiber's sensitivity to magnetic fields counteracts the temperature dependence of the fiber's Verdet constant, which allows to design current and field sensors that have reduced temperature dependence.