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:
Jan. 09, 2018
Filed:
Sep. 28, 2016
Applicant:
Nec Laboratories America, Inc., Princeton, NJ (US);
Inventors:
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 14/02 (2006.01); H04Q 11/00 (2006.01);
U.S. Cl.
CPC ...
H04J 14/0212 (2013.01); H04Q 11/0005 (2013.01); H04J 14/021 (2013.01); H04J 14/0201 (2013.01); H04Q 2011/0015 (2013.01); H04Q 2011/0058 (2013.01);
Abstract
Aspects of the present disclosure describe systems, structures and methods providing fully reconfigurable optical add-drop multiplexing (ROADM) that provide redundancy protection against any two (2) simultaneous wavelength selective switch (WSS) failures with only four 2×1 WSS structures for both Eastbound and Westbound traffic, while not requiring bidirectional operation of the WSS structures.