Method of manufacturing glass parts for connection of optical fibers, method of manufacturing mother glass to produce glass parts, and glass parts for connection of optical fibers
A method of manufacturing glass parts for connection of glass fibers is provided, which can improve the accuracy of the cross-sectional size of a through hole in the glass part. A mother glass having a similar cross section to a desired cross section of a glass part having a through hole is prepared, and the prepared mother glass is drawn while it is heated. The mother glass is made of a glass having a maximum devitrification speed of 100 μm or less per minute.
1. A method of manufacturing a glass part for connection of optical fibers, said glass part having at least one through hole formed therein to hold optical fibers, comprising the steps of:
preparing a mother glass having a similar cross section to a desired cross section of the glass part; and
drawing the prepared mother glass while heating the same;
wherein the mother glass is made of a glass having a maximum devitrification speed of 100 μm or less per minute.
2. A method as claimed in claim 1 , wherein the mother glass is made of a glass having a maximum devitrification speed of 10 μm or less per minute.
3. A method as claimed in claim 1 , wherein the mother glass is made of a glass selected from the group consisting of soda lime silicate glass, low alkali silicate glass, and germanate glass.
4. A method as claimed in claim 1 , wherein the mother glass has a polygonal through hole.
5. A method as claimed in claim 1 , additionally comprising tapering open ends of said through hole.
6. A method as claimed in claim 1 , wherein the through hole has a shape that aligns and holds a plurality of optical fibers.