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. 25, 2001
Filed:
Apr. 15, 1999
Applicant:
Inventors:
Michel Sotom, Paris, FR;
Claude Lebouetté, Bretigny sur Orge, FR;
François-Xavier Ollivier, Guibeville, FR;
Guy Franceus, Cheptainville, FR;
Assignee:
Alcatel, Paris, FR;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/43 ; H04J 1/402 ;
U.S. Cl.
CPC ...
G02B 6/43 ; H04J 1/402 ;
Abstract
A protected optical switch matrix having N inputs and N outputs and including an optical switching fabric (S,-S,′), an input interface (S,) performing wavelength conversion and an output interface (S,) performing wavelength filtering. The input interface (S,) and the output interface (S,) are protected by redundancy provided by r redundant units for E working units where r is a number very much less than E.