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. 21, 2023
Filed:
Nov. 08, 2021
Hifi Engineering Inc., Calgary, CA;
Brian H. Moore, Edmonton, CA;
Walter Jeffrey Shakespeare, Macungie, PA (US);
Phillip William Wallace, Bernardsville, NJ (US);
Viet Hoang, Edmonton, CA;
Chris Henrikson, Calgary, CA;
Ajay Sandhu, Calgary, CA;
Adrian Dumitru, Calgary, CA;
Thomas Clement, Calgary, CA;
Dongliang Huang, Calgary, CA;
Seyed Ehsan Jalilian, Calgary, CA;
Hifi Engineering Inc., Calgary, CA;
Abstract
There is described a method for interrogating optical fiber comprising fiber Bragg gratings ('FBGs'), using an optical fiber interrogator. The method comprises (a) generating an initial light pulse from phase coherent light emitted from a light source, wherein the initial light pulse is generated by modulating the intensity of the light; (b) splitting the initial light pulse into a pair of light pulses; (c) causing one of the light pulses to be delayed relative to the other of the light pulses; (d) transmitting the light pulses along the optical fiber; (e) receiving reflections of the light pulses off the FBGs; and (f) determining whether an optical path length between the FBGs has changed from an interference pattern resulting from the reflections of the light pulses.