Method for manufacturing a silica-base material for optical fiber
AssigneeFurukawa Electric Co., Ltd.
InventorsTsuguo Satoh, Takayuki Morikawa, Hiroshi Hihara, Takeshi Yagi, Kazuaki Yoshida
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Abstract
A silica-based glass rod is inserted into a space portion of a mold. Then, a slurry, which is obtained by dispersing a silica glass powder material in pure water, is poured into a molding space between the glass rod and the inner surface of the mold, whereby a porous glass shaped body is formed around the glass rod. Drying this shaped body results in a silica glass base material which includes the glass rod and the porous glass shaped body surrounding the same.
Claims8
A slip casting method for manufacturing a silica-base material for optical fibers, comprising the steps of:
- inserting a silica-based rod into a hollow molding space of a mold having one of a water absorbing property and a dehydrating property;
- said silica-based rod forming one of:
- (a) a core of an optical fiber to be formed;
- and
- (b) a core and a partial cladding of an optical fiber to be formed;
- pouring a slurry, obtained by dispersing a silica glass powder material in a quantity of pure water, into the hollow molding space of the mold between the silica-based rod as the inner surface of the hollow molding space of the mold, and forming a porous glass body around the silica-based rod as the water in the slurry is removed by one of the water absorbing and the dehydrating property of the mold.
Dependencies are inferred from the claim text.