JPS5663834A - Manufacture of glass fiber for optical transmission - Google Patents
Manufacture of glass fiber for optical transmissionInfo
- Publication number
- JPS5663834A JPS5663834A JP13737279A JP13737279A JPS5663834A JP S5663834 A JPS5663834 A JP S5663834A JP 13737279 A JP13737279 A JP 13737279A JP 13737279 A JP13737279 A JP 13737279A JP S5663834 A JPS5663834 A JP S5663834A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- forming glass
- contact
- clad layer
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
PURPOSE:To control the dimensions of core and clad layers with accuracy by bringing a plurality of clad layer forming glass rods into contact with the outside of a core forming glass rod and melt spinning them while bringing the clad layer forming glass rods into contact with each other. CONSTITUTION:A suitable number of clad layer forming glass rods 2 of a predetermined diameter are brought into contact with the outside of core forming glass rod 1 of a predetermined diameter so that rods 2 contact with each other. They are supported by chuck 5 and fed into melting and spinning quartz crucible 3 with feed mechanism 6 at a predetermined feeding speed. The temp. of heating furnace 4 is adjusted so that a uniform temp. part of about 950 deg.C optimum temp. is reduced as small as possible, e.g. to about 1cm width in the longitudinal direction of crucible 3 at crucible bottom B for spinning molten glass and the temp. gradients of parts before and behind the uniform temp. part are made sharp. Thus, the ratio of core to clad layer diameter can be controlled correctly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13737279A JPS5663834A (en) | 1979-10-23 | 1979-10-23 | Manufacture of glass fiber for optical transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13737279A JPS5663834A (en) | 1979-10-23 | 1979-10-23 | Manufacture of glass fiber for optical transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5663834A true JPS5663834A (en) | 1981-05-30 |
Family
ID=15197137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13737279A Pending JPS5663834A (en) | 1979-10-23 | 1979-10-23 | Manufacture of glass fiber for optical transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5663834A (en) |
-
1979
- 1979-10-23 JP JP13737279A patent/JPS5663834A/en active Pending
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