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US 8,259,389 B2Granted
Amplifying optical fiber and method of manufacturing
AssigneeDraka Comteq B.V.
InventorsAlain Pastouret, Ekaterina Burov, David Boivin, Christine Collet, Olivier Cavani
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Abstract
Disclosed is an amplifying optical fiber having a central core and an optical cladding surrounding the central core. The central core is based on a silica matrix that includes nanoparticles, which are composed of a matrix material that includes doping ions of at least one rare earth element. The amplifying optical fiber can be employed, for example, in an optical amplifier and an optical laser.
Claims29
An amplifying optical fiber, comprising:
- a central core comprising a silica matrix;
- and
- an optical cladding surrounding the central core;
- wherein the central core's silica matrix comprises nanoparticles, the nanoparticles comprising a matrix material that includes doping ions of at least one rare earth element;
- wherein the concentration of the doping ions is between about 0.01 weight percent and 1 weight percent of the total weight of the central core;
- and
- wherein, within at least one of the nanoparticles, the average distance between the doping ions is at least 0.4 nanometer.
4 more elements
A method for preparing a suspension of nanoparticles, comprising:
- (a) providing at least one compound comprising at least one ion of a rare earth element;
- (b) providing at least one compound comprising at least one ion to form the matrix material of the nanoparticles;
- and
- (c) adding the compounds obtained in step a) and step b) to an aqueous solution having a pH between about 3 and 12 under stirring to obtain the suspension of nanoparticles.
1 more element
Dependencies are inferred from the claim text.