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:
Jun. 30, 2020
Filed:
May. 06, 2016
Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;
Roberto Magri, Montignoso, IT;
Alberto Deho, Genoa, IT;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A network node () for use with a single-fiber bidirectional communication link comprises a filter (). The filter () comprises at least four ports. A first port () is configured to communicate with the single-fiber in a west direction. A second port () is configured to communicate with the single-fiber in an east direction. A third port () is configured to add/drop in the west direction. A fourth port () is configured to add/drop in the east direction. The network node is configured to add a first wavelength (λA) to the west direction and the east direction, and configured to drop a second wavelength (λB) from the west direction and the east direction.