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. 09, 2006
Filed:
Jan. 12, 2004
Dominique Mongardien, Antony, FR;
Catherine Martinelli, Palaiseau, FR;
Dominique Bayart, Clamart, FR;
Dominique Mongardien, Antony, FR;
Catherine Martinelli, Palaiseau, FR;
Dominique Bayart, Clamart, FR;
Alcatel, Paris, FR;
Abstract
A Raman amplifier () including at least one amplifying fiber () and a coupler () for coupling at least first () and second () pump laser modules to the amplifying fiber (), the first pump laser module () including a frequency discriminator () for selecting an optical frequency to be emitted with an optical power exceeding an optical power of remaining optical frequencies that are also emitted by the first pump laser module (). The first optical frequency is spaced apart from a local maximum () in optical power of the remaining optical frequencies, and the second pump laser module () emits at an optical frequency one Stokes-frequency above the frequency of the local maximum (). The first optical frequency and the frequency of the local maximum are chosen on Stokes-frequency above the signal frequency range. As a consequence, the Raman gain provided in the Raman amplifying fiberis broadened.