CN108383375A - Drawing optical fibers annealing device and optical fiber - Google Patents
Drawing optical fibers annealing device and optical fiber Download PDFInfo
- Publication number
- CN108383375A CN108383375A CN201810145788.3A CN201810145788A CN108383375A CN 108383375 A CN108383375 A CN 108383375A CN 201810145788 A CN201810145788 A CN 201810145788A CN 108383375 A CN108383375 A CN 108383375A
- Authority
- CN
- China
- Prior art keywords
- annealing
- annealing pipe
- air blowing
- mobile
- outer tube
- 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
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
- C03B37/10—Non-chemical treatment
-
- 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
- C03B37/02718—Thermal treatment of the fibre during the drawing process, e.g. cooling
- C03B37/02727—Annealing or re-heating
-
- 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
-
- 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
- C03B37/029—Furnaces therefor
-
- 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)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a kind of drawing optical fibers annealing device and optical fiber, it includes fiber drawing furnace, fixed annealing pipe, mobile annealing pipe and the driving portion for driving mobile annealing pipe movement, the graphite liner set and be installed on outer tube lower end and into mobile annealing pipe for the first air blowing portion of inert gas that mobile annealing pipe includes outer tube, is fixedly installed in outer tube, the baffle that first air blowing portion includes shell, is installed in shell, baffle are equipped with the upper flow-guiding channel for respectively conveying inert gas to mobile annealing pipe top and bottom and lower flow-guiding channel.The present invention can also be made by lower air blowing while reducing optical fiber internal stress reduction micro-crack and finally reducing optical fiber attenuation in fiber drawing furnace and the silicon carbide of annealing nozzle deposition is collected in the exhaust gas collection plate of wire drawing fire door, effective to improve fiber strength and efficient attenuation.
Description
Technical field
The present invention relates to optical fiber producing apparatus, more particularly to a kind of drawing optical fibers annealing device and optical fiber.
Background technology
Internal optical fiber drawing process is basicly stable now, and the length of common wire drawing and annealing device thermal field is shorter and thermal field
Interior minimum temperature is higher, the annealing device as disclosed in the patent application of Publication No. CN106019465A, inert gas from
Enter above fiber drawing furnace, during going under an inert gas, the temperature of gas is higher and higher so that the temperature of thermal field is not from upper
The length of the case where continuously decreasing down, thermal field is shorter and thermal field in minimum temperature it is higher, the temperature when optical fiber goes out annealing pipe
Degree is still kept as higher.But under the pressure of society to the communication need of message capacity big over long distances, drawing optical fibers producer is to wire drawing
Technique advanced optimize to reduce optical fiber attenuation.Most basic method is to reduce optical fiber internal stress to reduce micro-crack.
Many producers, which all expect fully annealing to optical fiber, reduces internal stress to reduce crizzle.Also some producers are under annealing pipe
Install annealing furnace additional, there are two drawbacks in this way：1. the annealing furnace of installation takes up space.2. annealing furnace will heat waste electric energy.
Invention content
The object of the present invention is to provide a kind of energy-saving convenient and optical fiber is made fully to anneal drawing optical fibers annealing device.
In order to achieve the above objectives, the technical solution adopted by the present invention is：A kind of drawing optical fibers annealing device, it includes wire drawing
Stove, the fixation annealing pipe being connected to below fiber drawing furnace, it further includes being sealedly attached to below the fixed annealing pipe for extending
The mobile annealing pipe for thermal field of annealing and driving portion for driving the mobile annealing pipe movement, the mobile annealing pipe include
It outer tube, the graphite liner being fixedly installed in outer tube set and is installed on the outer tube lower end and to mobile annealing pipe
Interior the first air blowing portion for inert gas, first air blowing portion includes shell, the baffle that is installed in the shell, described
Baffle is equipped with the upper flow-guiding channel for respectively conveying the inert gas to mobile annealing pipe top and bottom and lower water conservancy diversion
Channel.
Optimization, the driving portion includes screw mandrel drive mechanism, and the screw mandrel drive mechanism includes screw rod and threaded connection
With the nut on the screw rod, the driving mechanism further includes being connected between the nut of the screw body and the outer tube
Connector.
Further, the connector includes rotate connection and the first connecting rod and second connecting rod that can lock, and described
One connecting rod and the second connecting rod rotate and connect with the outer tube and the nut respectively, and the first connecting rod and described
Outer tube, the second connecting rod and the nut fix relative position by lock pin respectively.
Optimization, be equipped with the second air blowing portion below the fiber drawing furnace, the inert gas that second air blowing portion is blown into it is close
Degree is more than the inert gas density that the first air blowing portion is blown into.
Optimization, the flow of the inert gas in the upper flow-guiding channel is more than the stream of the inert gas in lower flow-guiding channel
Amount.
Optimization, the angle of the upper flow-guiding channel and the axis of graphite liner set is 20 °~40 °.
Optimization, the angle of the lower flow-guiding channel and the axis of graphite liner set is 40 °~60 °.
Optimization, the bottom cover of shell offers the through hole of optical fiber, and the lower end in first air blowing portion is equipped with for controlling
The shutter of mobile annealing pipe and fixed annealing pipe interior air-flow size, the shutter include rotate with the shell lower end connect and
By rotating to adjust the valve block of through hole size, the shaft of the valve block is perpendicular to the bottom cover.
The present invention also provides a kind of optical fiber, produce to obtain by above-mentioned drawing optical fibers annealing device.
Since above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：The present invention moves annealing
Pipe adjusts position by the driving portion, decides whether to install additional according to the demand of various optical fiber, is installed additional below fixed annealing pipe
Mobile annealing pipe can extend the length of thermal field, and the first air blowing portion and the output of the first air blowing portion are arranged below mobile annealing pipe
The density of inert gas is less than the density of the inert gas of the second air blowing portion output, therefore the inert gas of the first air blowing portion output
Can uplink temperature during uplink gradually rise, until reach wire drawing furnace tube port, formed a lowering temperature uniform and it is notable, together
Silicon carbide in fiber drawing furnace and fixed annealing pipe can be blown to fiber drawing furnace stove by the gas of thermal field longer Shi Changdu, rising simultaneously
In the gas sampling plate of mouth.Reaching, which reduces optical fiber internal stress reduction micro-crack, finally reduces optical fiber attenuation, while can also pass through
Lower air blowing makes in fiber drawing furnace and the silicon carbide of annealing nozzle deposition is collected and collected in plate in the exhaust gas of wire drawing fire door, effectively carries
High fiber strength and efficient attenuation.
Description of the drawings
Attached drawing 1 is the structural schematic diagram of annealing device；
Attached drawing 2 is the structural schematic diagram in the first air blowing portion；
Attached drawing 3 is the structural schematic diagram of shutter.
Specific implementation mode
The invention will be further described for embodiment shown in below in conjunction with the accompanying drawings.
As shown in Figure 1, drawing optical fibers annealing device includes fiber drawing furnace, the fixation annealing pipe 5 that is connected to below fiber drawing furnace, close
Envelope is connected to 5 lower section of the fixed annealing pipe and is used to extend the mobile annealing pipe 6 of annealing thermal field, for driving the mobile annealing
The driving portion air gauge 7 being installed on the fixed annealing pipe 5 and the oxygen being installed on mobile annealing pipe analysis that pipe 6 moves
Instrument 8.
The mobile annealing pipe 6 includes outer tube 12, the graphite liner being fixedly installed in the outer tube 12 set 11 and peace
Loaded on 12 lower end of the outer tube and into mobile annealing pipe 6 for the first air blowing portion 9 of inert gas, as shown in Fig. 2, described
First air blowing portion 9 includes shell 13, the baffle 14 being installed in the shell 13, and the baffle 14 is equipped with respectively by institute
State the upper flow-guiding channel 15 and lower flow-guiding channel 16 that inert gas is conveyed to 6 top and bottom of mobile annealing pipe.
The second air blowing portion is equipped with below the fiber drawing furnace（Fiber drawing furnace and the second air blowing portion are the prior art, are not done herein
It repeats）, the density for the inert gas that second air blowing portion is blown into is more than the inert gas density that the first air blowing portion 9 is blown into.Institute
The flow for stating the inert gas in flow-guiding channel 15 is more than the flow of the inert gas in lower flow-guiding channel 16.The upper water conservancy diversion
Channel 15 and the angle of the axis of graphite liner set 11 are 20 °~40 °.The lower flow-guiding channel 16 and the graphite liner
The angle of the axis of set 11 is 40 °~60 °.In the present embodiment, upper flow-guiding channel 15 with lower flow-guiding channel 16 respectively by a plurality of,
Uniformly outer side runner is formed between shell 13 and baffle 14, with upper water conservancy diversion around the axis of graphite liner set 11 respectively
Channel 15 is connected with lower flow-guiding channel 16, and the side wall of shell 13 is equipped with air inlet.
The bottom cover of shell 13 offers the through hole of optical fiber, and the lower end in first air blowing portion 9 is equipped with for controlling movement
The shutter of 5 interior air-flow size of annealing pipe 6 and fixed annealing pipe, as shown in figure 3, the shutter includes and 13 lower end phase of the shell
Rotation connection and the valve block 10 by rotating to adjust through hole size, the shaft of the valve block 10 is perpendicular to the bottom cover.
In the present embodiment, valve block 10 has two panels and symmetrical setting, and half round cut is respectively offered on valve block 10, and two valve blocks 10 close
Latter two half round cut is closed to be closed to form circular through holes.
The driving portion includes screw mandrel drive mechanism, the screw mandrel drive mechanism include screw rod 1 and be threadedly coupled with it is described
Nut 2 on screw rod 1, the driving mechanism further include being connected between the nut 2 of the screw body and the outer tube 12
Connector.The connector includes rotate connection and the first connecting rod 3 and second connecting rod 4 that can lock, 3 He of the first connecting rod
The second connecting rod 4 rotates and connect with the outer tube 12 and the nut 2 respectively, and the first connecting rod 3 and described outer
Pipe 12, the second connecting rod 4 and the nut 2 fix relative position by lock pin respectively.
Working principle of the present invention is as follows：Mobile annealing pipe is sent to attached below fixed annealing pipe first with driving portion
Closely, it is finely adjusted using connector, so that mobile annealing pipe is moved to immediately below fixed annealing pipe, then connector is locked, then turn
Dynamic screw rod drives mobile annealing pipe uplink and fixed annealing seal of tube splicing, and then fiber drawing furnace can start to work, meanwhile, the
Two air blowing portions and the work of the first air blowing portion, form, form a lowering temperature uniform and notable, while the thermal field that length is longer, rise
Gas the silicon carbide in fiber drawing furnace and fixed annealing pipe can be blown in the gas sampling plate of fiber drawing furnace fire door simultaneously.Reach
Reducing optical fiber internal stress reduction micro-crack finally reduces optical fiber attenuation, passes through the decaying for the optical fiber that above-mentioned fiber drawing furnace produces
It is low, while the silicon carbide that in fiber drawing furnace and annealing nozzle deposits can also be made to collect the exhaust gas in wire drawing fire door by lower air blowing
It collects in plate, it is effective to improve fiber strength and efficient attenuation.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of drawing optical fibers annealing device, it includes fiber drawing furnace, the fixation annealing pipe that is connected to below fiber drawing furnace, and feature exists
In：It further includes being sealedly attached to the mobile annealing pipe for being used to extend annealing thermal field below the fixed annealing pipe and being used for band
The driving portion of the dynamic mobile annealing pipe movement, the mobile annealing pipe includes outer tube, the stone that is fixedly installed in the outer tube
It black neck bush and is installed on the outer tube lower end and into mobile annealing pipe for the first air blowing portion of inert gas, it is described
The baffle that first air blowing portion includes shell, is installed in the shell, the baffle are equipped with respectively by the indifferent gas
The upper flow-guiding channel and lower flow-guiding channel that body is conveyed to mobile annealing pipe top and bottom.
2. drawing optical fibers annealing device according to claim 1, it is characterised in that：The driving portion includes lead screw driving machine
Structure, the screw mandrel drive mechanism include screw rod and threaded connection and the nut on the screw rod, and the driving mechanism further includes connecting
The connector being connected between the nut of the screw body and the outer tube.
3. drawing optical fibers annealing device according to claim 2, it is characterised in that：The connector includes the connection that rotates
And the first connecting rod and second connecting rod that can be locked, the first connecting rod and the second connecting rod respectively with the outer tube and the spiral shell
Parent phase is rotatablely connected, and the first connecting rod and outer tube, the second connecting rod and nut are solid by lock pin respectively
Determine relative position.
4. drawing optical fibers annealing device according to claim 1, it is characterised in that：It is blown equipped with second below the fiber drawing furnace
The density in gas portion, the inert gas that second air blowing portion is blown into is more than the inert gas density that the first air blowing portion is blown into.
5. drawing optical fibers annealing device according to claim 1, it is characterised in that：Indifferent gas in the upper flow-guiding channel
The flow of body is more than the flow of the inert gas in lower flow-guiding channel.
6. drawing optical fibers annealing device according to claim 1, it is characterised in that：The upper flow-guiding channel and the graphite
The angle of the axis of neck bush is 20 °~40 °.
7. drawing optical fibers annealing device according to claim 1, it is characterised in that：The lower flow-guiding channel and the graphite
The angle of the axis of neck bush is 40 °~60 °.
8. drawing optical fibers annealing device according to claim 1, it is characterised in that：The bottom cover of shell offers the logical of optical fiber
Via, the lower end in first air blowing portion are equipped with the shutter for controlling mobile annealing pipe and fixed annealing pipe interior air-flow size,
The shutter includes rotating to connect and the valve block by rotating to adjust through hole size with the shell lower end, the valve
The shaft of piece is perpendicular to the bottom cover.
9. a kind of optical fiber, it is characterised in that：It produces to obtain by either fiber wire drawing and annealing device in claim 1~8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810145788.3A CN108383375B (en) | 2018-02-12 | 2018-02-12 | Optical fiber drawing annealing device and optical fiber |
| PCT/CN2018/081564 WO2019153473A1 (en) | 2018-02-12 | 2018-04-02 | Optical fiber drawing and annealing device and optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810145788.3A CN108383375B (en) | 2018-02-12 | 2018-02-12 | Optical fiber drawing annealing device and optical fiber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108383375A true CN108383375A (en) | 2018-08-10 |
| CN108383375B CN108383375B (en) | 2023-08-04 |
Family
ID=63068829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810145788.3A Active CN108383375B (en) | 2018-02-12 | 2018-02-12 | Optical fiber drawing annealing device and optical fiber |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108383375B (en) |
| WO (1) | WO2019153473A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592894A (en) * | 2018-12-25 | 2019-04-09 | 通鼎互联信息股份有限公司 | A kind of drawing optical fibers sealing device and encapsulating method |
| CN110655321A (en) * | 2019-10-17 | 2020-01-07 | 远东通讯有限公司 | Low-loss optical fiber drawing system and drawing method thereof |
| CN110683752A (en) * | 2019-11-19 | 2020-01-14 | 赣州讯飞腾传导技术有限公司 | Optical fiber drawing cooling system and cooling method thereof |
| CN111348826A (en) * | 2020-04-29 | 2020-06-30 | 上海煜志科技有限公司 | Optical fiber drawing furnace |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198036A (en) * | 1990-11-29 | 1992-07-17 | Fujikura Ltd | Heating furnace for wire drawing of optical fiber |
| JPH10194770A (en) * | 1996-12-27 | 1998-07-28 | Kobe Steel Ltd | Wire drawing furnace for optical fiber |
| US20020059816A1 (en) * | 1999-05-27 | 2002-05-23 | Katsuya Nagayama | Apparatus and method for making optical fiber |
| CN1630621A (en) * | 2002-07-10 | 2005-06-22 | 住友电气工业株式会社 | Optical fiber and a method for manufactuirng same |
| JP2005281090A (en) * | 2004-03-30 | 2005-10-13 | Toyota Gakuen | Manufacturing method for optical fiber and manufacturing unit |
| CN1733635A (en) * | 2002-04-30 | 2006-02-15 | 康宁股份有限公司 | Methods for forming optical fiber |
| JP2010168247A (en) * | 2009-01-22 | 2010-08-05 | Sumitomo Electric Ind Ltd | Method and apparatus for producing optical fiber |
| CN106019465A (en) * | 2016-06-01 | 2016-10-12 | 中天科技光纤有限公司 | Ultralow loss optical fiber production system and technology used for production |
| CN106277746A (en) * | 2016-08-19 | 2017-01-04 | 青岛文创科技有限公司 | A kind of preparation technology of large effective area fiber |
| US20170203996A1 (en) * | 2015-08-04 | 2017-07-20 | Fujikura Ltd. | Manufacturing method for optical fiber |
| CN107082560A (en) * | 2017-05-15 | 2017-08-22 | 江苏亨通光纤科技有限公司 | A kind of optical fiber annealing extension tube |
| CN207845493U (en) * | 2018-02-12 | 2018-09-11 | 江苏富春江光电有限公司 | Drawing optical fibers annealing device |
| US20180290914A1 (en) * | 2015-10-29 | 2018-10-11 | Fujikura Ltd. | Optical fiber production method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4155001B2 (en) * | 2002-11-05 | 2008-09-24 | 住友電気工業株式会社 | Optical fiber manufacturing method and manufacturing apparatus |
| JP2011173734A (en) * | 2010-02-23 | 2011-09-08 | Fujikura Ltd | Extended tube for spinning machine and spinning machine |
| CN201890848U (en) * | 2010-11-12 | 2011-07-06 | 江苏通鼎光电股份有限公司 | Optical fiber annealing extension tube for high-speed fiber drawing |
| CN203212462U (en) * | 2013-05-10 | 2013-09-25 | 江苏法尔胜光子有限公司 | Vortex drawing graphite furnace with shielding gas |
-
2018
- 2018-02-12 CN CN201810145788.3A patent/CN108383375B/en active Active
- 2018-04-02 WO PCT/CN2018/081564 patent/WO2019153473A1/en active Application Filing
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04198036A (en) * | 1990-11-29 | 1992-07-17 | Fujikura Ltd | Heating furnace for wire drawing of optical fiber |
| JPH10194770A (en) * | 1996-12-27 | 1998-07-28 | Kobe Steel Ltd | Wire drawing furnace for optical fiber |
| US20020059816A1 (en) * | 1999-05-27 | 2002-05-23 | Katsuya Nagayama | Apparatus and method for making optical fiber |
| CN1733635A (en) * | 2002-04-30 | 2006-02-15 | 康宁股份有限公司 | Methods for forming optical fiber |
| CN1630621A (en) * | 2002-07-10 | 2005-06-22 | 住友电气工业株式会社 | Optical fiber and a method for manufactuirng same |
| JP2005281090A (en) * | 2004-03-30 | 2005-10-13 | Toyota Gakuen | Manufacturing method for optical fiber and manufacturing unit |
| JP2010168247A (en) * | 2009-01-22 | 2010-08-05 | Sumitomo Electric Ind Ltd | Method and apparatus for producing optical fiber |
| US20170203996A1 (en) * | 2015-08-04 | 2017-07-20 | Fujikura Ltd. | Manufacturing method for optical fiber |
| US20180290914A1 (en) * | 2015-10-29 | 2018-10-11 | Fujikura Ltd. | Optical fiber production method |
| CN106019465A (en) * | 2016-06-01 | 2016-10-12 | 中天科技光纤有限公司 | Ultralow loss optical fiber production system and technology used for production |
| CN106277746A (en) * | 2016-08-19 | 2017-01-04 | 青岛文创科技有限公司 | A kind of preparation technology of large effective area fiber |
| CN107082560A (en) * | 2017-05-15 | 2017-08-22 | 江苏亨通光纤科技有限公司 | A kind of optical fiber annealing extension tube |
| CN207845493U (en) * | 2018-02-12 | 2018-09-11 | 江苏富春江光电有限公司 | Drawing optical fibers annealing device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109592894A (en) * | 2018-12-25 | 2019-04-09 | 通鼎互联信息股份有限公司 | A kind of drawing optical fibers sealing device and encapsulating method |
| CN110655321A (en) * | 2019-10-17 | 2020-01-07 | 远东通讯有限公司 | Low-loss optical fiber drawing system and drawing method thereof |
| CN110655321B (en) * | 2019-10-17 | 2024-05-31 | 远东通讯有限公司 | Low-loss optical fiber drawing system and drawing method thereof |
| CN110683752A (en) * | 2019-11-19 | 2020-01-14 | 赣州讯飞腾传导技术有限公司 | Optical fiber drawing cooling system and cooling method thereof |
| CN110683752B (en) * | 2019-11-19 | 2024-02-09 | 赣州讯飞腾传导技术有限公司 | Optical fiber drawing cooling system and cooling method thereof |
| CN111348826A (en) * | 2020-04-29 | 2020-06-30 | 上海煜志科技有限公司 | Optical fiber drawing furnace |
| CN111348826B (en) * | 2020-04-29 | 2024-05-07 | 上海煜志科技有限公司 | Optical fiber drawing furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108383375B (en) | 2023-08-04 |
| WO2019153473A1 (en) | 2019-08-15 |
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