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:
Dec. 30, 2025
Filed:
Oct. 11, 2023
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Akira Masuda, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04Q 11/00 (2006.01); H04B 10/077 (2013.01); H04B 10/294 (2013.01); H04B 10/50 (2013.01);
U.S. Cl.
CPC ...
H04Q 11/0005 (2013.01); H04B 10/0773 (2013.01); H04B 10/294 (2013.01); H04B 10/506 (2013.01); H04Q 2011/0041 (2013.01);
Abstract
Provided is a path switching device including a wavelength separator that wavelength-separates signal light and monitoring light having a wavelength different from a wavelength of the signal light, a signal light path switcher that switches a path of the signal light, and a monitoring light path controller that controls a path of the monitoring light, wherein the monitoring light path controller sets a path of the monitoring light to one path regardless of a switching state of a path of the signal light.