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:
Mar. 04, 2008
Filed:
Mar. 20, 2003
Francois Dorgeuille, Paris, FR;
Ludovic Noirie, Nozay, FR;
Claude Artigue, Bourg la Reine, FR;
Amaury Jourdan, Sevres, FR;
Francois Dorgeuille, Paris, FR;
Ludovic Noirie, Nozay, FR;
Claude Artigue, Bourg la Reine, FR;
Amaury Jourdan, Sevres, FR;
ALCATEL, Paris, FR;
Abstract
An optical telecommunications network (), of metropolitan area type, having a ring type core (), and secondary rings (). In each sending access node (), transmitters () for sending information-carrying optical signals use a wavelength belonging to a group of wavelengths dedicated to the secondary ring () to which this sending access node () is connected. In each destination access node (), receivers () are capable of receiving all the wavelengths used by sending nodes () of the network. Communication nodes () comprise all-optical devices () for inserting, into the core fiber (), optical signals sent by a sending access node connected to the communication nodes. Optical couplers (), for taking from the core fiber () a so-called representative signal formed of a fraction of the power of each information-carrying signal, are respectively coupled to the receivers of the destination nodes.