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:
Jun. 24, 2025
Filed:
Jun. 29, 2021
Yokogawa Electric Corporation, Tokyo, JP;
Satoshi Matsuura, Musashino, JP;
Shin-Ichirou Tezuka, Musashino, JP;
Masayoshi Honma, Musashino, JP;
Yoshihiro Kumagai, Musashino, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
An optical fiber characteristic measurement device () includes a light detector () configured to detect Brillouin scattered light (LS) obtained by causing light to be incident on an optical fiber (FUT); a signal processor () configured to obtain, on the basis of a detection signal (S) which is output from the light detector, a first Brillouin gain spectrum (B) which is a spectrum of the Brillouin scattered light obtained in a case where a spectral width of the light incident on the optical fiber is a first width and a second Brillouin gain spectrum (B) which is a spectrum of the Brillouin scattered light obtained in a case where the spectral width of the light incident on the optical fiber is a second width larger than the first width; and a measurer () configured to measure characteristics of the optical fiber on the basis of the first Brillouin gain spectrum and the second Brillouin gain spectrum.