JPS55144436A - Producing optical fiber matrix - Google Patents
Producing optical fiber matrixInfo
- Publication number
- JPS55144436A JPS55144436A JP5234579A JP5234579A JPS55144436A JP S55144436 A JPS55144436 A JP S55144436A JP 5234579 A JP5234579 A JP 5234579A JP 5234579 A JP5234579 A JP 5234579A JP S55144436 A JPS55144436 A JP S55144436A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- collapse
- etching
- during
- refractive index
- 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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
- C03B37/01869—Collapsing
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General 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 prevent abnormal refractive index in a simple manner by using an etching agent to remove, in collapse process, internal surface layer which becomes the core of optical fiber. CONSTITUTION:The following treatment is performed in production of internally- filled optical fiber base material through collapse process of silica-based glass tube containing dopant and having internal layer which becomes the core of optical fiber. High temperature at collapse process causes such internal surface layer to change in refractive index, and therefore a process is includes such that the internal layer is removed by etching agent. The etching-remove process is performed in the middle of collapsing, if it is conducted once, or for multiple-collapse process, during at least one of any such process. (Preferably, during the last process.) For 4-step collapse process, it is preferable to perform at least one etching process during three continuous collapse operations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5234579A JPS55144436A (en) | 1979-04-26 | 1979-04-26 | Producing optical fiber matrix |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5234579A JPS55144436A (en) | 1979-04-26 | 1979-04-26 | Producing optical fiber matrix |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55144436A true JPS55144436A (en) | 1980-11-11 |
Family
ID=12912212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5234579A Pending JPS55144436A (en) | 1979-04-26 | 1979-04-26 | Producing optical fiber matrix |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55144436A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156932A (en) * | 1983-02-22 | 1984-09-06 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Manufacture of solid preform for optical fiber |
| EP1035083A1 (en) * | 1999-03-08 | 2000-09-13 | Spectran Corporation | Method of collapsing preforms for optical fibers |
| EP1535091A1 (en) * | 2002-09-03 | 2005-06-01 | LG Cable Ltd. | Method for making optical fiber preform having ultimately low pmd through improvement of ovality |
| KR100661692B1 (en) * | 2000-03-08 | 2006-12-26 | 스펙트란 코퍼레이션 | Method of preparing preforms for optical fibers |
| KR100966585B1 (en) | 2002-06-06 | 2010-06-29 | 드라카 파이버 테크놀로지 비. 브이. | Method of manufacturing a solid perform |
-
1979
- 1979-04-26 JP JP5234579A patent/JPS55144436A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59156932A (en) * | 1983-02-22 | 1984-09-06 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Manufacture of solid preform for optical fiber |
| JPH0476935B2 (en) * | 1983-02-22 | 1992-12-07 | Fuiritsupusu Furuuiranpenfuaburiken Nv | |
| EP1035083A1 (en) * | 1999-03-08 | 2000-09-13 | Spectran Corporation | Method of collapsing preforms for optical fibers |
| KR100661692B1 (en) * | 2000-03-08 | 2006-12-26 | 스펙트란 코퍼레이션 | Method of preparing preforms for optical fibers |
| KR100966585B1 (en) | 2002-06-06 | 2010-06-29 | 드라카 파이버 테크놀로지 비. 브이. | Method of manufacturing a solid perform |
| EP1535091A1 (en) * | 2002-09-03 | 2005-06-01 | LG Cable Ltd. | Method for making optical fiber preform having ultimately low pmd through improvement of ovality |
| EP1535091A4 (en) * | 2002-09-03 | 2006-03-01 | Lg Cable Ltd | Method for making optical fiber preform having ultimately low pmd through improvement of ovality |
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