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:
Sep. 08, 2026
Filed:
Apr. 25, 2024
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01H 9/00 (2006.01);
U.S. Cl.
CPC ...
G01H 9/004 (2013.01);
Abstract
An optical fiber sensing system according to the present disclosure includes: an optical fiber cable including an optical fiber and a supporting wire supporting the optical fiber; at least one memory storing instructions; and at least one processor configured to execute the instructions to transmit pulsed light to the optical fiber, also receive an optical signal from the optical fiber, derive a frequency characteristic of vibration generated in the optical fiber, based on the optical signal, and detect whether the supporting wire is broken, based on a frequency characteristic of the vibration.