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:
Aug. 18, 2015
Filed:
Jan. 27, 2012
Masato Kishi, Bunkyo-ku, JP;
Kazuo Hotate, Bunkyo-ku, JP;
Takashi Yari, Minato-ku, JP;
Yoshihiro Kumagai, Musashino, JP;
Masato Kishi, Bunkyo-ku, JP;
Kazuo Hotate, Bunkyo-ku, JP;
Takashi Yari, Minato-ku, JP;
Yoshihiro Kumagai, Musashino, JP;
THE UNIVERSITY OF TOKYO, Tokyo, JP;
MITSUBISHI HEAVY INDUSTRIES, LTD, Tokyo, JP;
YOKOGAWA ELECTRIC CORPORATION, Tokyo, JP;
Abstract
Provided is an optical fiber characteristics measurement device that is provided with: a light source for emitting laser light modulated by a specified modulation frequency; an incident means for receiving the laser light from the light source as continuous light and pulse light from one end and the other end of an optical fiber, respectively; and a light detector for detecting light emitted from the optical fiber, the optical fiber characteristics measurement device measuring the characteristics of the optical fiber using the detection results of the light detector, wherein the optical fiber characteristics measurement device is characterized in being provided with a synchronous detector that extracts, from among the detection signals output from the light detector, detection signals obtained by detecting the light in the vicinity of a measurement point set in the optical fiber, and synchronously detects the extracted detection signals using a synchronization signal having a specified period.