CN101328013A - Method for drawing optical fibre by using large size optical fibre prefabricated bar - Google Patents
Method for drawing optical fibre by using large size optical fibre prefabricated bar Download PDFInfo
- Publication number
- CN101328013A CN101328013A CN 200710042547 CN200710042547A CN101328013A CN 101328013 A CN101328013 A CN 101328013A CN 200710042547 CN200710042547 CN 200710042547 CN 200710042547 A CN200710042547 A CN 200710042547A CN 101328013 A CN101328013 A CN 101328013A
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- China
- Prior art keywords
- plug
- mandrel
- optical fiber
- large size
- casing
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- 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.)
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Classifications
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- 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
- C03B37/02754—Solid fibres drawn from hollow preforms
-
- 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
- C03B37/02736—Means for supporting, rotating or feeding the tubes, rods, fibres or filaments to be drawn, e.g. fibre draw towers, preform alignment, butt-joining preforms or dummy parts during feeding
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- 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)
- Glass Melting And Manufacturing (AREA)
Abstract
The invention relates to a method for drawing an optical fiber by a large size optical fiber perform rod. Firstly the large optical fiber perform rod is prepared as follows: preparing a large size mandrel by VAD art, inserting the mandrel after the mandrel is extended and the axial distribution of the core-spun is tested into a silica casing, conducting the HF acid washing and pure water cleaning and drying to the mandrel and casing surface before the insertion, then putting the combination of the mandrel and the silica casing into an fibre drawing furnace, respectively arranging caudal peduncles of the mindrel and the casing into each clamp, putting the casing and the mindrel into the fiber drawing furnace according to respective speed after the fiber drawing furnace warms up, adjusting the mandrel inserting speed according to the axial distribution of self core-spun. During the production of the large size optical fiber perform rod the soft perform rod is drawed while the mandrel is produced. A sealing device is arranged on top of the casing caudal peduncle, the gap between the mandrel and the casing vacuum pumped to seal with the outside, which prevents the secondary pollution during the drawing process. The invention discloses a large size silica optical fiber perform rod production method at a high efficiency and low cost.
Description
Technical field
The present invention relates to optical fiber and make the method for method, especially drawing optical fibre by using large size optical fibre prefabricated bar that the optical fiber in field makes.
Background technology
But the drawing optical fiber length of making large-sized prefabricated quartz fiber rod, the single prefabricated rods of increase is the effective way that improves optical fiber production efficient, reduces production costs.The existing method of making large-scale optical fiber prefabricating stick adopts axial vapor deposition process (VAD technology) to make the large size rock quartz core rod usually earlier, again plug is inserted and form molectron in the quartz socket tube, then with the molectron thermoplastic and be melt into large-sized prefabricated rods.Chinese patent 200610052195.X discloses a kind of like this manufacture method of large size prefabricated rod, this method requires plug that good geometric accuracy and homogeneity are arranged, and the large size plug that adopts VAD technology to make, geometric accuracy is wayward good, its Bao Xin is bigger than fluctuation, limit the size of making prefabricated rods, just be difficult to make large-scale optical fiber prefabricating stick and come drawing optical fiber, but also just can not increase the drawing optical fiber length of single prefabricated rods.
Summary of the invention
The objective of the invention is to overcome the existing deficiency of making the method for large-scale optical fiber prefabricating stick, provide a kind of and can reduce geometric accuracy and inhomogeneity requirement, make the large size plug of VAD technology manufacturing can be applicable to the method for making large size rock quartz optical fibre prefabricated bar and then drawing optical fiber the large size plug.
The method of drawing optical fibre by using large size optical fibre prefabricated bar provided by the invention comprises:
A. make large-scale optical fiber prefabricating stick earlier: adopt VAD prepared large size plug, plug is extended the axial distribution of this plug of back test Bao Xin ratio, the plug that test is good inserts in the quartz socket tube, before insertion, mandrel surface and sleeve surface are carried out HF pickling and pure water cleaning, insert again after to be dried, then plug and quartz socket tube combination are sent into fiber drawing furnace, plug caudal peduncle and sleeve pipe handle are installed in respectively on separately the anchor clamps, after fiber drawing furnace heats up, sleeve pipe and plug enter fiber drawing furnace according to speed separately, and plug advances rod speed to be regulated according to the axial distribution of himself Bao Xin ratio;
B. wire drawing is carried out to the remollescent prefabricated rods in limit system rod limit in making the large-scale optical fiber prefabricating stick process.
In order to prevent that entering air between plug and the sleeve pipe produces secondary pollution, at quartz socket tube caudal peduncle top tightness system is set, plug and telescopic gap are vacuumized and extraneous sealing.
The invention has the beneficial effects as follows and to overcome the problem that large size prefabricated rod is made in the not good restriction that causes of axial homogeneity that VAD process deposits large size plug exists.Plug is installed separately on different anchor clamps with sleeve pipe, can adopt the way control plug of plug and the asynchronous extension of sleeve pipe to advance rod speed, solves Bao Xin than the big plug that fluctuates to making the restricted problem of large size prefabricated rod.Make in the large-scale optical fiber prefabricating stick process and also just can directly carry out wire drawing.The present invention's employing is provided with tightness system at sleeve pipe caudal peduncle top plug and shell clearance is vacuumized, preventing that effectively plug and sleeve pipe are subjected to secondary pollution problem in the extension process, is a kind of high-level efficiency, the low-cost method of making large-scale optical fiber prefabricating stick and then drawing optical fiber.
Description of drawings
Fig. 1 is the synoptic diagram that adopts the equipment of drawing optical fiber of the present invention; Fig. 2 is the exhaust hood among Fig. 1 and the synoptic diagram of tightness system.
In Fig. 1, Fig. 2,1. plug anchor clamps, 2. plug caudal peduncle, 3. exhaust hood, 4. tightness system, 5. never-slip, 6. plug, 7. sleeve pipe, 8. fiber drawing furnace, 9. optical fiber, 10. sleeve pipe caudal peduncle.; 31. quartzy pressure ring, 32. venting ports, 33. nitrogen inlets, 34. graphite-seal rings, 35. quartzy wear rings; 41. sealing-ring, 42. nitrogen inlets, 43. metal cases.
Embodiment
With embodiment the specific embodiment of the present invention is described below.
For convenience of description, relational language and parameter are made the following instructions:
Plug: the stuffed quartz rod that adopts VAD technology to make comprises the sandwich layer and the pure SiO that mix Ge
2Covering;
Sleeve pipe: the cylindrical purity quartz glass pipe for high of high geometric accuracy;
Rr: plug Bao Xin ratio, the i.e. ratio of the diameter B of plug and plug center core layer diameter A;
Rf: the Bao Xin ratio of optical fiber, the i.e. ratio of the diameter of bare fibre and optical fiber center core layer diameter;
Do: cover external diameter of pipe;
Di: casing inner diameter;
Lc: telescopic length;
The green diameter of the plug that the Dv:VAD prepared obtains;
Dr: the diameter of the plug that process is extended;
The plug length of not extending that the Lv:VAD prepared obtains;
Lr: through the plug length after extending;
V: plug speed and sleeve pipe velocity ratio.
Embodiment:
Disposable drawing 5000km optical fiber is equivalent to the fibre-optical drawing amount of six roots of sensation Φ 80mm * 2000mm preform.
The employing internal diameter is 50mm, and external diameter is 180mm, and long sleeve pipe 7 for 3000mm is produced the G652D single-mode fiber, and the bare fibre diameter of target optical fiber is 125um, and wherein the core diameter of optical fiber is 8um, and the Bao Xin of optical fiber is 15.625 than Rf.Because 6 needs of sleeve pipe 7 and plug leave certain space, can allow plug 6 to have certain camber and ununiformity like this, the diameter of therefore setting after plug 6 extends is 45mm.By formula Dr
2* V=Rr
2* [(Do
2-Di
2)/(Rf
2-Rr
2)] can calculate the benchmark Rr=3.9352 when plug 6 speed are 1 with the identical V of being of sleeve pipe 7 speed.Therefore the design packet core ratio of setting the plug 6 of VAD prepared among the present invention is 4.0, is subjected to the restriction of VAD equipment and technology, and plug 6 axial Bao Xin are STDEV≤0.2 than the standard deviation of (B/A) fluctuation, and the variation range of actual packet core is between 4.0 ± 0.24.Fiber drawing furnace 8 Controlling System are by formula Dr
2* V=Rr
2* [(Do
2-Di
2)/(Rf
2-Rr
2)] thereby can calculate corresponding V according to the Rr test result of importing plug 6 accurately extends preform.The Bao Xin that table 1 has been listed in the present embodiment three representative points in the same plug 6 than and corresponding velocity ratio.
Table 1
Point Rr V
1 4.0 1.036
2 3.76 0.9076
3 4.24 1.1737
In the present embodiment, adopting the plug 6 former long Lv of VAD explained hereafter is 950mm, and diameter Dv is 80mm, and extending back length is 3002.47mm, and diameter is 45mm.By formula Lr=Lv * (Dv
2/ Dr
2) make full use of sleeve pipe 7 and processing loss Lc≤Lr by Dv=80mm and consideration, calculate original plug size Lv and should be not less than 949.22mm.Plug after extending 6 is combined with the sleeve pipe 7 of present embodiment, on fiber drawing furnace 8, advance rod speed and can draw 6099km optical fiber with the benchmark of 5.8mm/min.The rate of utilization of raw material in considering to produce, but the reality length of string is equivalent to the fibre-optical drawing amount of six roots of sensation Φ 80mm * 2000mm preform greater than 5000km.
Claims (2)
1, a kind of method of drawing optical fibre by using large size optical fibre prefabricated bar is characterized in that:
A. make large-scale optical fiber prefabricating stick earlier: adopt VAD prepared large size plug, plug is extended the axial distribution of this plug of back test Bao Xin ratio, the plug that test is good inserts in the quartz socket tube, before insertion, mandrel surface and sleeve surface are carried out HF pickling and pure water cleaning, insert again after to be dried, then plug and quartz socket tube combination are sent into fiber drawing furnace, plug caudal peduncle and sleeve pipe handle are installed in respectively on separately the anchor clamps, after fiber drawing furnace heats up, sleeve pipe and plug enter fiber drawing furnace according to speed separately, and plug advances rod speed to be regulated according to the axial distribution of himself Bao Xin ratio;
B. wire drawing is carried out to the remollescent prefabricated rods in limit system rod limit in making the large-scale optical fiber prefabricating stick process.
2,, it is characterized in that by the tightness system that quartz socket tube caudal peduncle top is provided with plug and telescopic gap being vacuumized and extraneous sealing in the wire drawing whole process by the method for the described drawing optical fibre by using large size optical fibre prefabricated bar of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710042547 CN101328013A (en) | 2007-06-22 | 2007-06-22 | Method for drawing optical fibre by using large size optical fibre prefabricated bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710042547 CN101328013A (en) | 2007-06-22 | 2007-06-22 | Method for drawing optical fibre by using large size optical fibre prefabricated bar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101328013A true CN101328013A (en) | 2008-12-24 |
Family
ID=40204065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710042547 Pending CN101328013A (en) | 2007-06-22 | 2007-06-22 | Method for drawing optical fibre by using large size optical fibre prefabricated bar |
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|---|---|
| CN (1) | CN101328013A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010124535A1 (en) * | 2009-04-27 | 2010-11-04 | 中天科技光纤有限公司 | Manufacture method for single mode fiber of undersea optical cable with high strength and large coil length |
| CN101538113B (en) * | 2009-04-27 | 2011-08-03 | 中天科技精密材料有限公司 | Method for preparing a microgap sleeve optical fiber prefabrication bar and method for drawing and preparing an optical fiber by microgap sleeve optical fiber prefabrication bar |
| CN102730959A (en) * | 2012-06-06 | 2012-10-17 | 烽火通信科技股份有限公司 | Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) |
| WO2012163053A1 (en) * | 2011-05-31 | 2012-12-06 | 长飞光纤光缆有限公司 | Induction furnace used for stretching large diameter preformed bars of optical fiber |
| CN106810065A (en) * | 2017-02-07 | 2017-06-09 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device and automatic wiredrawing method |
| CN106904821A (en) * | 2017-02-15 | 2017-06-30 | 天津富通集团有限公司 | The production technology and its large-scale optical fiber prefabricating stick of large-scale optical fiber prefabricating stick |
| CN107902886A (en) * | 2017-12-21 | 2018-04-13 | 上海塑洁环保工程设备有限公司 | Preform pickler |
| CN107915399A (en) * | 2017-12-07 | 2018-04-17 | 通鼎互联信息股份有限公司 | A kind of casing prefabricated stick drawn wire device and its manufacture method and application |
| CN114265149A (en) * | 2021-12-22 | 2022-04-01 | 长飞（武汉）光系统股份有限公司 | Method for manufacturing beam combiner |
-
2007
- 2007-06-22 CN CN 200710042547 patent/CN101328013A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538113B (en) * | 2009-04-27 | 2011-08-03 | 中天科技精密材料有限公司 | Method for preparing a microgap sleeve optical fiber prefabrication bar and method for drawing and preparing an optical fiber by microgap sleeve optical fiber prefabrication bar |
| WO2010124535A1 (en) * | 2009-04-27 | 2010-11-04 | 中天科技光纤有限公司 | Manufacture method for single mode fiber of undersea optical cable with high strength and large coil length |
| WO2012163053A1 (en) * | 2011-05-31 | 2012-12-06 | 长飞光纤光缆有限公司 | Induction furnace used for stretching large diameter preformed bars of optical fiber |
| US8950218B2 (en) | 2011-05-31 | 2015-02-10 | Yangze Optical Fibre And Cable Company Ltd. | Heating apparatus of induction furnace used for stretching large-diameter preformed rods of optical fibers |
| AP3696A (en) * | 2011-05-31 | 2016-05-31 | Yangze Optical Fibre And Cable Company Ltd | Induction furnace used for stretching large-diameter preformed bars of optical fiber |
| CN102730959A (en) * | 2012-06-06 | 2012-10-17 | 烽火通信科技股份有限公司 | Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) |
| CN102730959B (en) * | 2012-06-06 | 2014-12-31 | 烽火通信科技股份有限公司 | Manufacturing method of microstructure optical fiber preform for FTTH (fiber to the home) |
| CN106810065B (en) * | 2017-02-07 | 2020-01-10 | 通鼎互联信息股份有限公司 | Automatic fiber drawing device and automatic fiber drawing method for optical fiber preform |
| CN106810065A (en) * | 2017-02-07 | 2017-06-09 | 通鼎互联信息股份有限公司 | A kind of preform automatic wiredrawing device and automatic wiredrawing method |
| CN106904821A (en) * | 2017-02-15 | 2017-06-30 | 天津富通集团有限公司 | The production technology and its large-scale optical fiber prefabricating stick of large-scale optical fiber prefabricating stick |
| CN106904821B (en) * | 2017-02-15 | 2019-03-22 | 天津富通集团有限公司 | The production technology and its large-scale optical fiber prefabricating stick of large-scale optical fiber prefabricating stick |
| CN109721237A (en) * | 2017-02-15 | 2019-05-07 | 天津富通集团有限公司 | The production technology and its preform of preform |
| CN109721237B (en) * | 2017-02-15 | 2021-06-25 | 天津富通集团有限公司 | Optical fiber preform production process and optical fiber preform |
| CN107915399A (en) * | 2017-12-07 | 2018-04-17 | 通鼎互联信息股份有限公司 | A kind of casing prefabricated stick drawn wire device and its manufacture method and application |
| CN107902886A (en) * | 2017-12-21 | 2018-04-13 | 上海塑洁环保工程设备有限公司 | Preform pickler |
| CN107902886B (en) * | 2017-12-21 | 2024-04-16 | 上海塑洁环保工程设备有限公司 | Optical fiber perform pickling equipment |
| CN114265149A (en) * | 2021-12-22 | 2022-04-01 | 长飞（武汉）光系统股份有限公司 | Method for manufacturing beam combiner |
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| ASS | Succession or assignment of patent right |
Owner name: JIANGSU HENGTONG PHOTOELECTRIC CO., LTD. Free format text: FORMER OWNER: JIANGSU HENGTONG OPTICAL FIBER TECHNOLOGY CO., LTD. Effective date: 20090918 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20090918 Address after: Jiangsu city Wujiang seven town heart Tianwan Industrial Zone, postal code: 215234 Applicant after: Jiangsu Hengtong Photoelectric Co., Ltd. Address before: Jiangsu province Wujiang Economic Development Zone Zhongshan North Road ancient Tang intersection postal code: 215200 Applicant before: Jiangsu Hengtong Optical Fiber Technology Co., Ltd. Co-applicant before: Jiangsu Hengtong Photoelectric Co., Ltd. |
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Open date: 20081224 |