JPS5696739A - Preparation of optical fiber matrix - Google Patents
Preparation of optical fiber matrixInfo
- Publication number
- JPS5696739A JPS5696739A JP3380A JP3380A JPS5696739A JP S5696739 A JPS5696739 A JP S5696739A JP 3380 A JP3380 A JP 3380A JP 3380 A JP3380 A JP 3380A JP S5696739 A JPS5696739 A JP S5696739A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- matrix
- porous matrix
- porous
- outer diameter
- 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.)
- Granted
Links
Landscapes
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
PURPOSE:To prepare a uniform porous glass matrix having lowered outer diameter variation and stable outer diameter, by providing an exhaustion opening for the removal of excess fine glass particles and reaction products near the growing surface of the porous matrix. CONSTITUTION:Raw materials of glass and combustible gas are introduced to a synthesis torch 41, and subjected to hydrolysis reaction and thermoxidation reaction in the torch to form a porous matrix 47 composed of attached and deposited fine particles of synthetic glass. Excess glass fine particles and reaction products 43, 44 which do not contribute to the growth of the porous matrix 47, are removed from the stream of glass fine powders and flame 42 through the exhaustion openings 45, 46 placed in the neighborhood of the porous matrix 47. The process suppresses the outer diameter variation of the porous matrix 47, prevents the formation of a glass powder layer having low bulk density to the side wall of the porous matrix, and prevents the crack-formation at the side wall of the matrix 47. Consequently, the subsequent heating of the matrix at a high temperature followed by defoaming gives a transparent glass matrix in high stability.
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3380A JPS5938171B2 (en) | 1980-01-07 | 1980-01-07 | Manufacturing method of optical fiber base material |
US06/188,916 US4367085A (en) | 1980-01-07 | 1980-09-19 | Method of fabricating multi-mode optical fiber preforms |
CA000360818A CA1164737A (en) | 1980-01-07 | 1980-09-23 | Fabrication method of a multi-mode optical fiber preform |
DE3036915A DE3036915C2 (en) | 1979-10-09 | 1980-09-30 | Method and device for producing optical fiber starting shapes and their use for drawing optical fibers |
GB8031821A GB2059944B (en) | 1979-10-09 | 1980-10-02 | Fabrication method of optical fibre preforms |
NLAANVRAGE8005546,A NL189814C (en) | 1979-10-09 | 1980-10-07 | METHOD FOR MANUFACTURING PROVISIONALLY FORMED OPTICAL FIBERS; NUCLEAR TORCH FOR MANUFACTURING PROVISIONALLY FORMED POROUS CORE WORKS. |
FR8021512A FR2467180B1 (en) | 1979-10-09 | 1980-10-08 | METHOD FOR MANUFACTURING AN OPTICAL FIBER PREFORM AND CORE TORCH FOR MANUFACTURING POROUS PREFORMS |
IT25227/80A IT1133839B (en) | 1979-10-09 | 1980-10-09 | PROCEDURE FOR THE MANUFACTURE OF PREFORMED FOR OPTICAL FIBERS |
GB08301030A GB2128981B (en) | 1979-10-09 | 1983-01-14 | Fabrication method of optical fiber preforms |
GB08301031A GB2128982B (en) | 1979-10-09 | 1983-01-14 | Fabrication method of optical fiber preforms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3380A JPS5938171B2 (en) | 1980-01-07 | 1980-01-07 | Manufacturing method of optical fiber base material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5696739A true JPS5696739A (en) | 1981-08-05 |
JPS5938171B2 JPS5938171B2 (en) | 1984-09-14 |
Family
ID=11463028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3380A Expired JPS5938171B2 (en) | 1979-10-09 | 1980-01-07 | Manufacturing method of optical fiber base material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5938171B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61281025A (en) * | 1985-06-04 | 1986-12-11 | Sumitomo Electric Ind Ltd | Production of deposited material of glass fine particles |
-
1980
- 1980-01-07 JP JP3380A patent/JPS5938171B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61281025A (en) * | 1985-06-04 | 1986-12-11 | Sumitomo Electric Ind Ltd | Production of deposited material of glass fine particles |
Also Published As
Publication number | Publication date |
---|---|
JPS5938171B2 (en) | 1984-09-14 |
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