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. 23, 2024
Filed:
Apr. 02, 2019
Applicant:
Hitachi Energy Ltd, Zürich, CH;
Inventors:
Xun Gu, Neuenhof, CH;
Philippe Gabus, Nyon, CH;
Assignee:
HITACHI ENERGY LTD, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/255 (2006.01); G01R 15/24 (2006.01); G01R 19/00 (2006.01); G02B 6/024 (2006.01);
U.S. Cl.
CPC ...
G02B 6/2558 (2013.01); G01R 15/24 (2013.01); G01R 19/0092 (2013.01); G02B 6/024 (2013.01);
Abstract
The invention relates to a spliced optical fiber comprising a first and second polarization-maintaining optical fiber connected at ends by splicing; to fiber optic current sensors; and to a method for protecting the spliced optical fiber against mechanical stress and/or humidity. A protection tube is arranged around the spliced optical fiber in a splice section of the spliced optical fiber. A first and second end of the protection tube is sealed to the spliced optical fiber by first and second sealing arrangement for protecting the splice.