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:
Jul. 10, 2018
Filed:
Apr. 17, 2015
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Shoichiro Oda, Fuchu, JP;
Yasuhiko Aoki, Yokohama, JP;
Hiroki Oi, Kawasaki, JP;
Satoru Okano, Yokohama, JP;
Yoichi Akasaka, Allen, TX (US);
Jeng-Yuan Yang, Garland, TX (US);
FUJITSU LIMITED, Kawasaki, JP;
Abstract
An optical signal-to-noise ratio monitor includes: a measuring unit that measures an optical signal-to-noise ratio of a polarization multiplexed optical signal, a polarization state of the polarization multiplexed optical signal changing with respect to time; a selector that selects, from a plurality of optical signal-to-noise ratios measured by the measuring unit at a plurality of measurement points within a designated measurement period, an optical signal-to-noise ratio that is higher than an average of the plurality of optical signal-to-noise ratios; and an output unit that outputs the optical signal-to-noise ratio selected by the selector.