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. 28, 2004
Filed:
Jan. 10, 2003
Dominique Bayart, Clamart, FR;
Carlos De Barros, Boulogne-Billancourt, FR;
Thierry Lopez, Paris, FR;
Xavier Normandin, Bures-s/-Yvette, FR;
Alcatel, Paris, FR;
Abstract
The present invention relates to a cascaded multi-wavelength Raman fiber laser adapted for emitting radiation of at least one wavelength &lgr; , with a length of optical fiber ( ) having input ( ) and output ( ) sections, means ( ) for introducing pump radiation of wavelength &lgr; into said length of optical fiber ( ), at least one pair of spaced-apart reflector means ( ), defining an optical cavity belonging to said optical fiber, each of said reflector means having a center wavelength, the reflector means of each pair being located respectively at said input section ( ) and said output section ( ) of said optical fiber and at least one of said pairs of reflector means having its reflector means located at said output section ( ), called output reflector means ( ), having a lower reflectivity at said center wavelength than the corresponding reflector means of the same pair ( ) located at said input section ( ), so as to emit radiation of said output wavelengths out of said optical fiber ( ).