04680046 is referenced by 19 patents and cites 6 patents.

A method of preparing preforms for optical fibers is provided. The method includes preparation of a first sol solution of a silicon alkoxide hydrolyzed with an acid and ultrafine particle silica, placement of the first sol solution into a container, and gelation of the first sol solution while the container is being rotated to yield a wet gel having a center hole. A second sol solution having a different composition than the first sol solution is prepared and used to fill the center hole in the wet gel. The second sol solution is then gelled to a wet gel composite and the composite is dried and sintered to yield the preform.

Title
Method of preparing preforms for optical fibers
Application Number
6/782773
Publication Number
4680046
Application Date
October 2, 1985
Publication Date
July 14, 1987
Inventor
Haruo Osafune
Nagano
JP
Sadao Kanbe
Nagano
JP
Yoshitaka Itoh
Nagano
JP
Masanobu Motoki
Nagano
JP
Nobutaka Matsuo
Nagano
JP
Agent
Blum Kaplan
Assignee
Seiko Epson Kabushiki Kaisha
JP
IPC
C03B 37/016
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