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:
Apr. 23, 2024
Filed:
May. 21, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Atsushi Nakamura, Musashino, JP;
Chihiro Kito, Musashino, JP;
Daisuke Iida, Musashino, JP;
Junichi Kawataka, Musashino, JP;
Hiroyuki Oshida, Musashino, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide a Brillouin optical sensing device and an optical sensing method capable of reducing introduction costs. The Brillouin optical sensing device according to the present invention includes: a sensing fiberin which a plurality of optical fibers having Brillouin frequency shift characteristics different from each other are arranged in parallel; an optical measuring instrumentthat launches an optical pulse into at least two of the optical fibers of the sensing fiberto generate Brillouin scattering lights and measures a beat frequency of a beat signal between the Brillouin scattering lights at any position of the sensing fiber; and an arithmetic processing unitthat acquires a physical quantity of the sensing fiberat said any position based on the beat frequency acquired by the optical measuring instrument