Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1982-05-20
1984-04-17
Fisher, Richard V.
Glass manufacturing
Processes
Forming product or preform from molten glass
65 13, 65 181, 264 15, 264 63, C03B 1906
Patent
active
044432399
ABSTRACT:
A tubular formation of particulate optical material is formed by a layer slurry deposition process which involves spraying layer after layer of slurry containing particles of the optical material onto a rotating rod-shaped bait. The composition of the slurry and particularly the index of refraction of the optical material may be varied from one layer to another or from one group of layers to another to obtain a graded or stepped refraction index profile in the formation, in an optical preform formed therefrom, and ultimately in the fiber drawn from the optical preform. The particles of the slurry are suspended in a liquid vehicle which evaporates in the spray stream or shortly after deposition, and are coated with an organic binder which holds them together in the layer and in the formation, so that the formation is self-supporting. Then, the organic binder is removed and the formation is sintered, followed by a collapse of the sintered tubular formation into the optical preform in the form of a solid rod. Then, optical fiber of the desired optical properties can be drawn from the optical preform. The associated apparatus includes a spray gun aimed at the bait rod, and a receptacle for the slurry from which the slurry is supplied to the spray gun. The bait rod is clamped in chucks and is rotated, while the spray gun moves in the axial direction of the bait rod in a plurality of passes to deposit the formation on the bait rod.
REFERENCES:
patent: 2390354 (1945-12-01), Clapp
patent: 3823995 (1974-07-01), Carpenter
patent: 3826560 (1974-07-01), Schultz
patent: 3993495 (1976-11-01), Galliath et al.
patent: 4311501 (1982-07-01), Fort et al.
Biswas Dipak R.
Nath Dilip K.
Fisher Richard V.
International Telephone and Telegraph Corporation
O'Halloran John T.
Ruzek Peter R.
LandOfFree
Fabrication of optical waveguides using slurry deposition does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fabrication of optical waveguides using slurry deposition, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fabrication of optical waveguides using slurry deposition will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-93867