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:
Jul. 31, 2012
Filed:
Jun. 22, 2009
Applicants:
Klaus Bohnert, Oberrohrdorf, CH;
Andreas Frank, Zürich, CH;
Hubert Brändle, Oberengstringen, CH;
Inventors:
Assignee:
ABB Research Ltd., Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/00 (2006.01); G02B 6/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electro-optical high-voltage sensor includes a waveguiding sensing fiber of an electro-optical material. The electrical field of the voltage to be measured is substantially parallel to the longitudinal axis of the sensing fiber. The sensing fiber carries two orthogonally polarized light waves, with the applied field affecting the birefringence between the waves. Using an electro-optical waveguiding fiber in this configuration allows the voltage between two widely spaced points to be accurately measured.