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US 5,314,520 AGranted
Method for manufacturing optical fiber preform
AssigneeFurukawa Electric Co., Ltd.
InventorsTakeshi Yagi, Tsuguo Satoh, Yoshiaki Koinuma, Kazuaki Yoshida
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Abstract
A method for manufacturing a preform having steps of obtaining a plastic material by kneading silica powder, a binder, water, and a surfactant, and obtaining a porous preform by extrusion-molding the plastic material. According to this method, a porous preform, which can produce an optical fiber exerting high mechanical strength, can be efficiently manufactured without generating bubbles
Claims11
A method for manufacturing an optical fiber preform comprising:
- (a) obtaining a plastic material by kneading a silica powder, a binder, water and an non-ionic surfactant, said surfactant being in an amount of 0.01 to 0.5 parts by weight relative to 100 parts by weight of said silica powder;
- and
- (b) obtaining a porous preform by extrusion molding the plastic material.
Dependencies are inferred from the claim text.