Erbium-doped silica optical fiber preform

Details Erbium-doped silica optical fiber preform Erbium-doped silica optical fiber preform

1995-03-13

1996-06-11

Healy, Brian

Optical waveguides

Having particular optical characteristic modifying chemical...

Of waveguide core

385123, 385141, G02B 600

Patent

active

055264590

ABSTRACT:
A manufacturing method for erbium doped silica, having a soot formation process, in which a silica glass soot is deposited on a seed rod for forming a soot preform in a porous state on the seed rod, a dopant impregnation process, wherein the soot preform is impregnated with at least an erbium compound, and a preform formation process, wherein this soot preform impregnated with a dopant is heated and rendered transparent. The dopant impregnation process is provided with an operation in which the soot preform obtained in the soot formation process is dipped in a solution containing an erbium compound, an aluminum compound, and a phosphorus compound; this is then desiccated, and soot preform which is impregnated with the erbium compound, the aluminum compound, and the phosphorus compound is obtained.

REFERENCES:
patent: 4923279 (1990-05-01), Ainslie et al.
patent: 5047076 (1991-09-01), Cognolato et al.
patent: 5123940 (1992-06-01), DiGiovanni et al.
patent: 5151117 (1992-09-01), Bartholomew et al.
patent: 5262365 (1993-11-01), Oyobe et al.
patent: 5314518 (1994-05-01), Ito et al.

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