CN112047620A - Connector for drawing octagonal optical fiber preform and connecting method - Google Patents
Connector for drawing octagonal optical fiber preform and connecting method Download PDFInfo
- Publication number
- CN112047620A CN112047620A CN202010999943.5A CN202010999943A CN112047620A CN 112047620 A CN112047620 A CN 112047620A CN 202010999943 A CN202010999943 A CN 202010999943A CN 112047620 A CN112047620 A CN 112047620A
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- China
- Prior art keywords
- optical fiber
- connector
- octagonal
- support rod
- hole groove
- 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
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005491 wire drawing Methods 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000835 fiber Substances 0.000 abstract description 8
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- 229910052769 Ytterbium Inorganic materials 0.000 abstract description 2
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 230000004927 fusion Effects 0.000 description 5
- 238000005253 cladding Methods 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Images
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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
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)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention relates to a connector for drawing an octagonal optical fiber perform and a connecting method. In the preform rod connecting process, the ytterbium-doped optical fiber preform rod processed into an octagonal shape is embedded into the octagonal hole groove at the front end, and the support rods are embedded into the circular hole grooves and are respectively sintered and connected on oxyhydrogen flames. The technical effect is that higher collimation degree has between two excellent, has reduced and has mixed ytterbium optical fiber perform eccentricity, reduces original technology and causes the prefabricated stick and supports the bubble that exists between excellent gap, is favorable to increasing the effective wire drawing length of optical fiber perform, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated stick's optical fiber yield greatly.
Description
Technical Field
The invention relates to preparation of an optical fiber preform, in particular to a connector for drawing an octagonal optical fiber preform and a connecting method.
Background
When the optical fiber perform advances to the wire drawing technology link, in order to utilize the perform to carry out the wire drawing to furthest, it is fixed to use the chuck simultaneously, needs to carry out the butt fusion extension with optical fiber perform and support stick. The support rod is made of pure quartz materials, and when the support rod is subjected to high-temperature fusion welding with the optical fiber perform, the support rod is slightly extruded to the fusion welding position, and the support rod can be fixed at one end of the perform. Because ytterbium doped fiber perform is the octagon, and the support stick generally chooses cylindrical pure quartz stick for use, and both geometric shape have certain size difference, consequently can produce the deviation when butt fusion perform, make perform can not be in same straight line with the support stick completely, influence the optical fiber geometry after the drawing. In addition, in the fusion process of the preform and the support rod, air is easily mixed into a gap between the two rods due to extrusion at the fusion joint, so that micro bubbles can be formed in the preform, and the mechanical strength and the light permeability during the drawing of the optical fiber are affected.
Disclosure of Invention
In view of the problems in the prior art, the invention provides the connector for drawing the octagonal optical fiber perform and the connecting method, which can improve the utilization rate of the optical fiber perform, simplify the rod connecting process and reduce the optical fiber eccentric error.
The technical scheme adopted by the invention is as follows: the utility model provides a connector for octagonal optical fiber perform wire drawing, includes the connector, its characterized in that: the connector is a quartz cylinder with the diameter of 34mm and the length of 7-8 cm, the two ends of the cylinder are respectively provided with a regular octagonal hole groove and a circular hole groove, the depth of the regular octagonal hole groove is 3cm, the diameter of an inscribed circle is larger than the diameter of an inscribed circle of the octagonal optical fiber perform rod by 0.05-0.15 mm, the depth of the circular hole groove is 2cm, and the diameter of the inscribed circle is larger than the outer diameter of the support rod by 0.05-0.15 mm.
The connection method is that,
firstly, one end of a support rod is inserted into a circular hole groove of a connector, the other end of the support rod is fixed in a rotary chuck of an MCVD lathe, the chuck is rotated at a constant speed, the joint area of the support rod and the connector is heated to a molten state by using oxyhydrogen flame on the MCVD lathe until the support rod and the connector are melted into a whole, and the support rod and the connector are cooled to room temperature after the welding is completed.
And secondly, aligning and inserting the tail end of the optical fiber preform into the octagonal hole groove of the connector, rotating the chuck, heating the connecting area to a molten state by oxyhydrogen flame, cooling at room temperature after welding is finished, and finishing the connection of the optical fiber preform (2) and the support rod.
The method has the advantages of improving the welding collimation degree of the optical fiber preform and the support rod, increasing the welding firmness degree of the preform and the support rod and avoiding micro bubbles generated in the welding process. On the other hand, reduced the excellent technology degree of difficulty of connecing, promoted operating efficiency, the optic fibre of drawing can keep intact geometric structure, and the optical fiber cladding has better concentricity with the coating, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated excellent's optic fibre yield greatly, has reduced prefabricated excellent length loss.
Drawings
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a schematic view of the present invention connecting a preform rod and a support rod.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
Example one
As shown in fig. 1 and 2, the connector for drawing the octagonal optical fiber perform rod with the inscribed circle diameter of 28 mm is characterized in that the connector 1 is a quartz cylinder with the diameter of 34mm and the length of 7 cm, two ends of the cylinder are respectively a regular octagonal hole groove 1-1 and a circular hole groove 1-2, the groove depth of the regular octagonal hole groove 1-1 is 3cm, the diameter of the inscribed circle is 28.1mm, and the groove depth of the circular hole groove 1-2 is 2cm, and the diameter of the inner circle is 28.1 mm.
The connection method comprises the following steps of,
firstly, inserting one end of a support rod 3 into a circular hole groove 1-2 of a connector 1, fixing the other end of the support rod in a rotary chuck of an MCVD lathe, rotating the chuck at a constant speed, heating a joint area of the support rod and the connector 1 to a molten state by using oxyhydrogen flame on the MCVD lathe until the support rod and the connector are melted into a whole, and cooling to room temperature after the welding is completed.
And secondly, aligning and inserting the tail end of the optical fiber preform 2 into the octagonal hole groove 1-1 of the connector 1, rotating the chuck, heating the connection area to a molten state by oxyhydrogen flame, and cooling at room temperature after welding to complete the connection of the optical fiber preform 2 and the support rod 3.
The benefits are as follows:
the prefabricated stick passes through the connector butt joint with the support stick, has higher collimation degree between two sticks. With supporting rod vertical fixation on wire drawing tower anchor clamps, prefabricated stick can remain stable vertical state during the drawing optic fibre, therefore the optic fibre of drawing can keep intact geometric structure, and the optical fiber cladding has better concentricity with the coating, has reduced because the optic fibre that the coating deviation leads to is scrapped the problem, promotes single prefabricated stick's optical fiber yield greatly. Meanwhile, the rod connecting process details are simplified, and the time consumption of the preform rod straightening process is reduced. The time consumption of the rod connecting process is reduced from 25 minutes to 10 minutes, and the process efficiency is improved.
Specifically, the concentricity deviation of the optical fiber is improved, and the qualification rate of the 20/400 type ytterbium-doped optical fiber is improved from 60% to 100% and the qualification rate of the 50/400 type ytterbium-doped optical fiber is improved from 40% to 90% by taking the concentricity deviation smaller than 1.5 mu m as a standard. The test data is shown in table one.
Watch 1
Claims (2)
1. Octagonal optical fiber perform connector for wire drawing, including connector (1), its characterized in that: the connector (1) is a quartz cylinder with the diameter of 34mm and the length of 7-8 cm, a regular octagonal hole groove (1-1) and a circular hole groove (1-2) are respectively arranged at two ends of the cylinder, the groove depth of the regular octagonal hole groove (1-1) is 3cm, the diameter of an inscribed circle is larger than the diameter of an inscribed circle of the octagonal optical fiber preform by 0.05-0.15 mm, and the groove depth of the circular hole groove (1-2) is 2cm, and the diameter of the inscribed circle is larger than the outer diameter of the support rod by 0.05-0.15 mm.
2. A method of connecting an octagonal optical fiber preform drawing connector according to claim 1, wherein: the connection method is that,
firstly, inserting one end of a support rod (3) into a circular hole groove (1-2) of a connector (1), fixing the other end of the support rod in a rotary chuck of an MCVD lathe, rotating the chuck at a constant speed, heating a joint area of the support rod and the connector (1) to a molten state by using oxyhydrogen flame on the MCVD lathe until the support rod and the connector are melted into a whole, and cooling to room temperature after the welding is finished;
and secondly, aligning and inserting the tail end of the optical fiber preform rod (2) into the octagonal hole groove (1-1) of the connector (1), rotating the chuck, heating the connecting area to a molten state by oxyhydrogen flame, cooling at room temperature after welding is finished, and completing the connection of the optical fiber preform rod (2) and the support rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999943.5A CN112047620A (en) | 2020-09-22 | 2020-09-22 | Connector for drawing octagonal optical fiber preform and connecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010999943.5A CN112047620A (en) | 2020-09-22 | 2020-09-22 | Connector for drawing octagonal optical fiber preform and connecting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112047620A true CN112047620A (en) | 2020-12-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010999943.5A Pending CN112047620A (en) | 2020-09-22 | 2020-09-22 | Connector for drawing octagonal optical fiber preform and connecting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112047620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072987A (en) * | 2022-08-22 | 2022-09-20 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199026A (en) * | 1997-03-25 | 1998-11-18 | 古河电气工业株式会社 | Electric furnace extension method and extension apparatus for optical fiber glass preform |
| CN103214181A (en) * | 2013-04-18 | 2013-07-24 | 烽火通信科技股份有限公司 | High-speed optical fiber drawing device and method |
| CN203558971U (en) * | 2013-09-30 | 2014-04-23 | 特恩驰(南京)光纤有限公司 | Optical fiber preform tail end matching device |
| JP2014221691A (en) * | 2013-05-13 | 2014-11-27 | 信越化学工業株式会社 | Dummy rod integrated optical fiber preform and preparation method thereof |
| CN205241507U (en) * | 2015-12-22 | 2016-05-18 | 江苏法尔胜光子有限公司 | Loose body prefabrication of optic fibre sleeve for stick |
| CN109343170A (en) * | 2018-11-26 | 2019-02-15 | 中国电子科技集团公司第四十六研究所 | A kind of coaxial twin-guide mixes ytterbium Active Optical Fiber and preparation method thereof |
| CN212335021U (en) * | 2020-09-22 | 2021-01-12 | 中国电子科技集团公司第四十六研究所 | Octagonal connector for optical fiber perform wire drawing |
-
2020
- 2020-09-22 CN CN202010999943.5A patent/CN112047620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199026A (en) * | 1997-03-25 | 1998-11-18 | 古河电气工业株式会社 | Electric furnace extension method and extension apparatus for optical fiber glass preform |
| CN103214181A (en) * | 2013-04-18 | 2013-07-24 | 烽火通信科技股份有限公司 | High-speed optical fiber drawing device and method |
| JP2014221691A (en) * | 2013-05-13 | 2014-11-27 | 信越化学工業株式会社 | Dummy rod integrated optical fiber preform and preparation method thereof |
| CN203558971U (en) * | 2013-09-30 | 2014-04-23 | 特恩驰(南京)光纤有限公司 | Optical fiber preform tail end matching device |
| CN205241507U (en) * | 2015-12-22 | 2016-05-18 | 江苏法尔胜光子有限公司 | Loose body prefabrication of optic fibre sleeve for stick |
| CN109343170A (en) * | 2018-11-26 | 2019-02-15 | 中国电子科技集团公司第四十六研究所 | A kind of coaxial twin-guide mixes ytterbium Active Optical Fiber and preparation method thereof |
| CN212335021U (en) * | 2020-09-22 | 2021-01-12 | 中国电子科技集团公司第四十六研究所 | Octagonal connector for optical fiber perform wire drawing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115072987A (en) * | 2022-08-22 | 2022-09-20 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
| CN115072987B (en) * | 2022-08-22 | 2023-01-03 | 中国电子科技集团公司第四十六研究所 | Preparation method of active optical fiber with octagonal inner cladding structure |
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