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:
Nov. 05, 2002
Filed:
Oct. 12, 1999
Applicant:
Inventors:
Assignee:
Alcatel, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/402 ;
U.S. Cl.
CPC ...
H04J 1/402 ;
Abstract
A selection module receives an upstream multiplex and selectively diverts at least one channel of the multiplex to a drop port. A switching unit directs the channel concerned to an add port during certain periods in order to reinsert it into a downstream multiplex including at least one other channel of the upstream multiplex. An amplifier has sufficient gain to give rise to a circulating wave during the aforementioned periods in a closed loop including the two ports and the unit. This wave balances the downstream multiplex. Applications include fiber optic telecommunication networks.