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:
Jan. 02, 2007
Filed:
Oct. 15, 2004
Vincent Havard, Choisy le Roi, FR;
François Boubal, Viry Chatillon, FR;
Vincent Havard, Choisy le Roi, FR;
François Boubal, Viry Chatillon, FR;
Alcatel, Paris, FR;
Abstract
An optical transmission system uses as its transmission medium a fiber having chromatic dispersion. A sender emits an optical signal to be transmitted into the fiber. A sender emits into the transmission medium pumping light constituting a first pump adapted to pump the optical signal by the Raman effect and pumping light constituting a second pump adapted to pump the first pumping light by the Raman effect. The first pump and the second pump are amplitude modulated and the envelopes of the first pump and the second pump are decorrelated in time. This decorrelation limits the efficiency of the Raman pumping of the first light by the second light on emission. Varying the decorrelation in time between the pump envelopes varies the region of the transmission system in which the signals are amplified.