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:
Oct. 18, 2022
Filed:
Mar. 19, 2021
Koninklijke Philips N.v., Eindhoven, NL;
Fujikura Ltd., Tokyo, JP;
Jeroen Jan Lambertus Horikx, Eindhoven, NL;
Gert Wim 'T Hooft, Eindhoven, NL;
Anna Hendrika Van Dusschoten, Eindhoven, NL;
Shingo Matsushita, Eindhoven, NL;
Ichii Kentaro, Eindhoven, NL;
FUJIKURA LTD., Tokyo, JP;
KONINKLIJKE PHILIPS N.V., Eindhoven, NL;
Abstract
An optical fiber sensor includes an optical fiber. The optical fiber includes a cladding having a cladding refractive index, and a plurality of fiber cores embedded in the cladding and extending along a longitudinal axis of the optical fiber. The plurality of fiber cores include a first subset of at least one first fiber core and a second subset of at least one second fiber core. The at least one first fiber core has a first core refractive index different from the cladding refractive index and a first core radius in a direction transverse to the longitudinal axis. The at least one second fiber core has a second core refractive index different from the cladding refractive index and a second core radius transverse to the longitudinal axis. The second core refractive index and the second core radius differ from the first core refractive index and the first core radius such that a temperature sensitivity of the at least one second fiber core differs from the temperature sensitivity of the first fiber core.