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:
Jan. 01, 2013
Filed:
Mar. 17, 2010
Harry Schilling, Eichstätt, DE;
Hans Poisel, Leinburg, DE;
Olaf Ziemann, Nürnberg, DE;
Michael Luber, Fürth, DE;
Sven Loquai, Weidach, DE;
Harry Schilling, Eichstätt, DE;
Hans Poisel, Leinburg, DE;
Olaf Ziemann, Nürnberg, DE;
Michael Luber, Fürth, DE;
Sven Loquai, Weidach, DE;
Avago Technologies Fiber IP (Singapore) Pte. Ltd., Singapore, SG;
Abstract
An optical fiber sensor has a measurement path and a reference path. Both paths each consist of two optical fibers and are fed with modulated light. The fibers of the reference path have a predefined difference in length, whereas the fibers of the measurement path are the same length. All fibers are at approximately the same temperature. An evaluation circuit determines the phase differences in each case between the fibers of the measurement path and of the reference path. A measurement value calculated from the phase differences is then output.