Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1992-03-24
1993-04-20
Jones, W. Gary
Glass manufacturing
Processes
Forming product or preform from molten glass
65 182, 65144, C03B 37018
Patent
active
052038971
ABSTRACT:
An improved method for making preforms by vapor deposition soot laydown processes is provided wherein an oxidizing atmosphere is used during at least part of the laydown process, e.g., during the laydown of the center portion of the preform. The use of such an atmosphere has been found to result in enhanced dopant capture, reduced axial trends, and an overall stabilization of the laydown process. A method for selecting burner flows which optimize the laydown process is also provided.
REFERENCES:
patent: 3698936 (1972-10-01), Moltzan
patent: 4165223 (1979-08-01), Powers
patent: 4165224 (1979-08-01), Irven et al.
patent: 4230744 (1980-10-01), Blankenship
patent: 4314833 (1982-02-01), Kuppers
patent: 4314837 (1982-02-01), Blankenship
patent: 4345928 (1982-08-01), Kawachi et al.
patent: 4406680 (1983-09-01), Edahiro et al.
patent: 4417911 (1983-11-01), Cundy et al.
patent: 4465708 (1984-08-01), Fanucci et al.
patent: 4529427 (1985-07-01), French
patent: 4627866 (1986-12-01), Kanamori et al.
patent: 4801322 (1989-01-01), Suda et al.
M. Elder & D. Powers; "Profiling of Optical Waveguide Flames" Technical Digest for the 1986 Conf. on Optical Fiber Communication; Atlanta, Georgia, p. 74, 1986.
Edahiro et al; "Deposition Properties of High-Silica Particles in the Flame Hydrolysis Reaction for Optical Fiber Fabrication" Japanese Journal of Applied Physics; vol. 19, No. 11; Nov. 1980; pp. 2047-2054.
Kawachi et al; "Deposition Properties of SiO.sub.2 -GeO.sub.2 Particles in the Flame Hydrolysis Reaction for Optical Fiber Fabrication"; Japanese Journal of Applied Physics; vol. 19, No. 2; Feb. 1980; pp. L69-L71.
Optical Fiber Communications, vol. 1,; 1985; Bell Telephone Labs., Inc., sections 3.3.2.3 and 3.3.2.4; pp. 109-113.
Sanada et al.; "Behavior of GeO.sub.2 in Dehydration and Consolidation Processes of the VAD Method"; Technical Digest for the 1984 Conference of Optical Fiber Communication; New Orleans; p. 26; 1984.
Powers Dale R.
Sandhage Kenneth H.
Stalker Michael J.
Corning Incorporated
Friedman Charles K.
Jones W. Gary
Taylor, Jr. K. McNeill
LandOfFree
Method for making a preform doped with a metal oxide does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for making a preform doped with a metal oxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for making a preform doped with a metal oxide will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1523424