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:
Nov. 22, 2022
Filed:
Aug. 23, 2019
Yokogawa Electric Corporation, Musashino, JP;
Satoshi Matsuura, Tokyo, JP;
Yokogawa Electric Corporation, Tokyo, JP;
Abstract
An optical fiber characteristics measurement apparatus () includes: a light source () configured to output continuous light (L) of which frequency is modulated; a first optical splitter () configured to split the continuous light into pump light (LP) and reference light (LR); a pulser () configured to pulse the pump light; a second optical splitter () configured to cause the pulsed pump light to be incident from one end of an optical fiber (FUT) and output backscattered light (LS) generated due to Brillouin scattering in the optical fiber; a detector () configured to detect interference light between the backscattered light and the reference light; a cutout unit () configured to cut out a detection signal output from the detector at predetermined time intervals; and a measurer () configured to measure characteristics of the optical fiber individually using the detection signal for each of the predetermined time intervals cut out by the cutout unit.