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:
Mar. 25, 2025
Filed:
Jan. 10, 2020
National Research Council of Canada, Ottawa, CA;
Cyril Hnatovsky, Ottawa, CA;
Dan Grobnic, Ottawa, CA;
Stephen Mihailov, Kanata, CA;
Ping Lu, Stittsville, CA;
Kasthuri De Silva, Milton, CA;
Huimin Ding, Nepean, CA;
David Coulas, Greely, CA;
Robert Walker, Spencerville, CA;
NATIONAL RESEARCH COUNCIL OF CANADA, Ottawa, CA;
Abstract
An apparatus, method and system are set forth for detection of fluids using Bragg grating sensors, wherein the Bragg grating sensing element comprises an optical fiber having a Bragg grating inscribed therein characterized by optical properties that are dependent upon the periodicity and effective refractive index of the grating, and a package for subjecting the Bragg grating to a change in strain when contacted by a fluid such that periodicity and effective refractive index of the grating changes, whereby when interrogated with laser light any such change in periodicity and effective refractive index may be detected.