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:
May. 23, 2017
Filed:
Feb. 16, 2011
Klaus Grobe, Planegg, DE;
Klaus Grobe, Planegg, DE;
ADVA OPTICAL NEWTORKING SE, Meiningen OT Dreissigacker, DE;
Abstract
The invention relates to an optical communication network () comprising a plurality of nodes () connected to each other by means of optical fibers () in a ring structure, wherein optical signals are transported at working wavelengths (λ) in a first direction in said ring structure and wherein optical signals are transported at protection wavelengths (λ) in a second direction that is opposite to the first direction in said ring structure, wherein for each node () at least one wavelength assignment table (WAT) is provided, wherein to each working wavelength (λ) a corresponding protection wavelength (λ) is assigned, wherein in case of a detected connection failure in said ring structure each node () which loses at least one connection performs for all working wavelengths (λ) affected by said connection failure a lookup in its wavelength assignment table (WAT) to determine the respective protection wavelength (λ) and tunes lasers of transceiver units to the determined protection wavelengths (λ).