CN113387557B - Optical fiber processing device - Google Patents
Optical fiber processing device Download PDFInfo
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- CN113387557B CN113387557B CN202110806852.XA CN202110806852A CN113387557B CN 113387557 B CN113387557 B CN 113387557B CN 202110806852 A CN202110806852 A CN 202110806852A CN 113387557 B CN113387557 B CN 113387557B
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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
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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
- C03B37/07—Controlling or regulating
-
- 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
- C03B37/075—Manufacture of non-optical fibres or filaments consisting of different sorts of glass or characterised by shape, e.g. undulated fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/12—General methods of coating; Devices therefor
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C25/00—Surface treatment of fibres or filaments made from glass, minerals or slags
- C03C25/10—Coating
- C03C25/24—Coatings containing organic materials
- C03C25/26—Macromolecular compounds or prepolymers
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The invention discloses an optical fiber processing device, comprising: the device comprises a first heating furnace for melting the chemical fiber core rod, a second heating furnace for melting the cladding rod, an optical fiber synthesis funnel and a heat preservation heating furnace for preserving and heating the optical fiber synthesis funnel; the core cane is at least partially positioned within the first furnace; the clad rod is at least partially positioned in the second heating furnace; the optical fiber synthesis funnel is positioned below the first heating furnace and the second heating furnace; the optical fiber synthesis funnel comprises an inner funnel and an outer funnel; the outer funnel is sleeved on the periphery of the inner funnel; the inner funnel is provided with an inner layer cavity for containing fiber core liquid formed by melting the fiber core rod; the outer funnel is provided with an outer layer cavity for containing cladding liquid formed by melting the cladding rod; the optical fiber synthesis funnel is provided with a central hole for the fiber core liquid in the inner layer cavity to flow out to form a fiber core filament and an outer hole for the cladding liquid in the outer layer cavity to flow out to wrap the fiber core filament; an outer aperture surrounds the central aperture. The optical fiber processing device provided by the invention avoids the process of processing the optical fiber preform and improves the production efficiency.
Description
The application is a divisional application with the application date of 2018, 07 and 26 months, the application number of 201810835695.3 and the name of an optical fiber processing method.
Technical Field
The invention relates to an optical fiber processing method.
Background
The conventional optical fiber processing method is to draw an optical fiber preform. When the optical fiber perform rod is produced, not only the fiber core is manufactured, but also a layer of cladding is wrapped outside the fiber core, the processing process of the optical fiber perform rod is complex, and the processing defect of the optical fiber perform rod influences the quality of the optical fiber.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the optical fiber processing method, which does not need to process the optical fiber preform in advance and avoids the defect generated in the process of processing the optical fiber preform from influencing the quality of the optical fiber.
In order to achieve the above object, the present invention adopts the following technical solutions:
an optical fiber processing method comprising the steps of:
respectively melting the chemical fiber core rod and the cladding rod;
the inner cavity of the optical fiber synthesis funnel is filled with fiber core liquid formed by melting a fiber core rod, the outer cavity of the optical fiber synthesis funnel is filled with cladding liquid formed by melting a cladding rod,
the fiber core liquid flows out from the central hole of the optical fiber synthesis funnel to form a fiber core filament, and the cladding liquid flows out from the outer hole surrounding the central hole to wrap the fiber core filament.
Further, the optical fiber processing method adopts an optical fiber processing device to prepare the optical fiber. The optical fiber processing apparatus includes: the device comprises a first heating furnace for melting the chemical fiber core rod, a second heating furnace for melting the cladding rod, an optical fiber synthesis funnel and a heat preservation heating furnace for preserving and heating the optical fiber synthesis funnel; the core cane is at least partially positioned within the first furnace; the clad rod is at least partially positioned in the second heating furnace; the optical fiber synthesis funnel is positioned below the first heating furnace and the second heating furnace; the optical fiber synthesis funnel comprises an inner funnel and an outer funnel; the outer funnel is sleeved on the periphery of the inner funnel; the inner funnel is provided with an inner layer cavity for containing fiber core liquid formed by melting the fiber core rod; the outer funnel is provided with an outer layer cavity for containing cladding liquid formed by melting the cladding rod; the optical fiber synthesis funnel is provided with a central hole for the core liquid in the inner layer cavity to flow out to form a core filament and an outer hole for the cladding liquid in the outer layer cavity to flow out to wrap the core filament; the outer aperture surrounds the central aperture.
Further, the optical fiber synthesis funnel further comprises a connecting frame; the inner funnel and the outer funnel are fixed by the connecting frame.
Further, the connecting frame comprises a plurality of connecting ribs; the connecting ribs are connected with the inner funnel and the outer funnel; a plurality of splice bars encircle inner funnel and evenly set up.
Further, the automatic bar feeding device also comprises a first bar feeding mechanism and a second bar feeding mechanism; the first rod feeding mechanism adjusts the position of the fiber core rod relative to the first heating furnace; the second rod feeding mechanism adjusts the position of the clad rod relative to the second heating furnace.
Further, the ultrasonic range finder comprises a first ultrasonic range finder and a second ultrasonic range finder; the first ultrasonic range finder is used for detecting the height of the fiber core liquid of the inner cavity; the second ultrasonic distance meter is used for detecting the height of the cladding liquid of the outer layer cavity; the first ultrasonic range finder is arranged above the inner-layer cavity; the second ultrasonic range finder is arranged above the outer layer cavity; the first ultrasonic distance meter and the second ultrasonic distance meter are positioned below the first heating furnace.
Furthermore, the device also comprises a first diameter measuring instrument used for detecting the diameter of the optical fiber wire wrapped with the clad core wire.
Further, the device also comprises a coating and curing device for coating the surface layer of the optical fiber with resin and a second diameter measuring instrument for detecting the wire diameter of the optical fiber coated with the resin on the surface layer.
Further, the coating and curing device is positioned between the first caliper and the second caliper.
Further, the number of the coating curing devices is two.
The invention has the advantages that the fiber core rod and the cladding rod are respectively heated and melted by the first heating furnace and the second heating furnace, so that the process of processing the optical fiber preform is avoided, the cost is saved, the production efficiency is improved, and the defects generated in the process of processing the optical fiber preform are avoided.
The optical fiber synthesis funnel can adjust the line diameter of the optical fiber by controlling the heights of the fiber core liquid and the cladding liquid when the optical fiber is manufactured by dripping, is simple to operate and saves cost.
The optical fiber manufactured by dripping the optical fiber synthesis funnel of the optical fiber processing device can avoid the change of the instantaneous line diameter caused by the uneven or unstable melting temperature, thereby improving the quality of the optical fiber.
Drawings
FIG. 1 is a flow chart of a method of processing an optical fiber according to the present invention;
FIG. 2 is a schematic view of an optical fiber processing apparatus of the optical fiber processing method of FIG. 1;
FIG. 3 is a schematic view of an upper end face of a fiber synthesis funnel of the optical fiber processing apparatus of FIG. 2;
FIG. 4 is an enlarged view of the lower end face of the fiber synthesis funnel of the optical fiber processing apparatus of FIG. 2;
FIG. 5 is a schematic view of the first caliper, the second caliper, and the coating curing device of the optical fiber processing apparatus of FIG. 2.
The device comprises an optical fiber processing device 10, a first heating furnace 11, a second heating furnace 12, a heat preservation heating furnace 13, an optical fiber synthesis funnel 14, an inner funnel 141, an outer funnel 142, an inner layer cavity 143, an outer layer cavity 144, a central hole 15, an outer hole 16, a connecting frame 17, a connecting rib 171, a first rod feeding mechanism 18, a second rod feeding mechanism 19, a first ultrasonic distance measuring instrument 20, a second ultrasonic distance measuring instrument 21, a first diameter measuring instrument 22, a coating curing device 23, a second diameter measuring instrument 24, a fiber core rod 101 and a cladding rod 102.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1 to 5, an optical fiber processing apparatus 10 includes: a first heating furnace 11 for melting the core rod 101, a second heating furnace 12 for melting the clad rod 102, an optical fiber synthesizing funnel 14, and a heat-insulating heating furnace 13 for heat-insulating and heating the optical fiber synthesizing funnel 14. The first heating furnace 11 heats and melts the core rod 101. The clad rods 102 are heated and melted by the second heating furnace 12. The core liquid and the cladding liquid melted by heating the core rod 101 and the cladding rod 102 respectively drop into the optical fiber synthesis funnel 14. The heat-insulating heating furnace 13 heats the optical fiber synthesis funnel 14 while maintaining the liquid state of the core liquid and the cladding liquid in the optical fiber synthesis funnel 14 and maintaining a constant temperature. Specifically, the core cane 101 is at least partially located within the first furnace 11. The clad rods 102 are at least partially located within the second furnace 12. The fiber synthesizing hopper 14 is located below the first heating furnace 11 and the second heating furnace 12. As a specific embodiment, the fiber synthesis funnel 14 includes an inner funnel 141 and an outer funnel 142. The outer funnel 142 is sleeved on the periphery of the inner funnel 141; the inner funnel 141 is formed with an inner cavity 143. The molten core droplets of the core rod 101 fall into the inner cavity 143 and are received in the inner cavity 143. The outer funnel 142 is formed with an outer chamber 144. The molten cladding liquid from the cladding rod 102 drips into the outer cavity 144 and is received in the outer cavity 144. The fiber synthesis funnel 14 is also formed with a central aperture 15 and an outer aperture 16. An outer aperture 16 surrounds the central aperture 15. The core fluid in the inner chamber 143 flows out of the central bore 15 to form a core filament, and the cladding fluid in the outer chamber 144 flows out of the outer bore 16 to encapsulate the core filament. The core liquid and the cladding liquid flow out from the central hole 15 and the outer hole 16 at the same speed and the flowing cladding liquid wraps the core filament, thereby forming the optical fiber 201.
In a preferred embodiment, the fiber synthesis funnel 14 further comprises a connector frame 17. The connection frame 17 connects the inner funnel 141 and the outer funnel 142. Specifically, the connecting frame 17 is fixed to the inner funnel 141 and the outer funnel 142. As a specific embodiment, the attachment frame 17 includes a plurality of attachment ribs 171. The connecting ribs 171 connect the inner funnel 141 and the outer funnel 142. A plurality of connection ribs 171 are uniformly arranged around the inner funnel 141 to secure stability of the coupling structure.
In a preferred embodiment, the optical fiber processing apparatus 10 further includes a first rod feeding mechanism 18 and a second rod feeding mechanism 19. The first rod feeding mechanism 18 can adjust the position of the cored rod 101 with respect to the first heating furnace 11. The second rod feeding mechanism 19 is capable of adjusting the position of the clad rod 102 with respect to the second heating furnace 12. The first and second rod feeding mechanisms 18 and 19 may be the same as a conventional rod feeding mechanism that adjusts the position of the optical fiber preform.
Specifically, after the core rod 101 located in the first heating furnace 11 is melted by heat, the first rod feeding mechanism 18 adjusts the position of the core rod 101 so that the core rod 101 is maintained in a state where it is at least partially located in the first heating furnace 11. Similarly, when the clad rod 102 in the second heating furnace 12 is heated and melted, the first rod feeding mechanism 18 adjusts the position of the clad rod 102 so that the clad rod 102 is maintained at least partially in the first heating furnace 11. The speed at which the core rod 101 is melted can be adjusted by the length of the core rod 101 extending into the first heating furnace 11. The rate at which the clad rods 102 melt can also be controlled by the length of the clad rods 102 that extend into the second furnace 12.
As a preferred embodiment, the optical fiber processing apparatus 10 further includes: a first ultrasonic range finder 20 and a second ultrasonic range finder 21. The first ultrasonic distance meter 20 is used for detecting the height of the core liquid of the inner cavity 143. The second ultrasonic distance meter 21 is used for detecting the height of the cladding liquid in the outer layer cavity 144. Specifically, the height of the core liquid and the height of the cladding liquid are detected by the first ultrasonic distance meter 20 and the second ultrasonic distance meter 21, respectively. The hydraulic pressure in the inner cavity 143 and the outer cavity 144 can be calculated from the height of the core liquid and the height of the cladding liquid. The flow rate of the core fluid out of the central bore 15 and the flow rate of the cladding fluid out of the outer bore 16 can be controlled by controlling the fluid pressure in the inner cavity 143 and the outer cavity 144. The wire diameter of the optical fiber 201 can be calculated from the flow rate of the core liquid flowing out of the central hole 15 and the flow rate of the cladding liquid flowing out of the outer hole 16. Therefore, when the wire diameter needs to be adjusted, the flow rate is calculated according to the wire diameter, and the hydraulic pressure of the inner cavity 143 and the outer cavity 144 is calculated. The melting speed of the core rod 101 and the clad rod 102 is accelerated or decelerated by adjusting the melting temperature of the first heating furnace 11 and the second heating furnace 12, thereby adjusting the height of the liquid level. When the liquid level in the inner cavity 143 and the outer cavity 144 reaches a preset value, the corresponding line diameter of the hydraulic pressure at this time is a preset line diameter size. 0
The optical fiber synthesis funnel 14 is filled with core liquid and cladding liquid, starts a buffer effect, avoids the traditional direct melting of the optical fiber preform rod, wastes a large amount of optical fiber materials when the wire diameter is not consistent, or can avoid the influence on the optical fiber quality caused by the sudden thickening or thinning of the optical fiber due to the adjustment of the position of the optical fiber preform rod.
In a specific embodiment, the first ultrasonic distance meter 20 is disposed above the inner cavity 143. The second ultrasonic range finder 21 is disposed above the outer layer cavity 144. The first ultrasonic range finder 20 and the second ultrasonic range finder 21 are located below the first heating furnace 11.
As a preferred embodiment, the optical fiber processing apparatus 10 further includes: a first caliper 22. The first caliper 22 may be used to detect the diameter of the optical fiber 201 wrapped with the clad core wire.
As a preferred embodiment, the optical fiber processing apparatus 10 further includes: a coating curing device 23 and a second caliper 24. The coating and curing device 23 is used to apply resin coating to the surface layer of the optical fiber 201. The second caliper 24 is used to detect the wire diameter of the optical fiber 201 that has passed through the surface-coated resin.
In a preferred embodiment, the coating and curing device 23 is located between the first caliper 22 and the second caliper 24.
As a preferred embodiment, the optical fiber processing apparatus 10 includes two coating and curing devices 23.
The processing method of the optical fiber processing apparatus 10 is as follows:
the first heating furnace 11 and the second heating furnace 12 fuse the core rod 101 and the clad rod 102, respectively;
the inner layer cavity 143 of the optical fiber synthesis funnel 14 contains core liquid formed by melting the core rod 101, and the outer layer cavity 144 of the optical fiber synthesis funnel 14 contains cladding liquid formed by melting the cladding rod 102;
the core liquid flows out of the central hole 15 of the optical fiber synthesis funnel 14 to form a core filament, and the cladding liquid flows out of the outer hole 16 surrounding the central hole 15 to wrap the core filament to form the optical fiber filament.
And coating and curing the optical fiber to form the optical fiber.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by using equivalent alternatives or equivalent variations fall within the scope of the present invention.
Claims (7)
1. An optical fiber processing apparatus, comprising: the device comprises a first heating furnace for melting the fiber core rod, a second heating furnace for melting the cladding rod, an optical fiber synthesis funnel and a heat preservation heating furnace for preserving and heating the optical fiber synthesis funnel; a core rod is at least partially positioned within the first furnace; the clad rods are at least partially positioned in the second heating furnace; the optical fiber synthesis funnel is positioned below the first heating furnace and the second heating furnace; the optical fiber synthesis funnel comprises an inner funnel and an outer funnel; the outer funnel is sleeved on the periphery of the inner funnel; the inner funnel is provided with an inner layer cavity for containing fiber core liquid formed by melting the fiber core rod; the outer funnel is provided with an outer layer cavity for containing cladding liquid formed by melting the cladding rod; the optical fiber synthesis funnel is provided with a central hole for the core liquid in the inner layer cavity to flow out to form a core filament and an outer hole for the cladding liquid in the outer layer cavity to flow out to wrap the core filament; the outer hole surrounds the central hole;
the device also comprises a first rod feeding mechanism and a second rod feeding mechanism; the first rod feeding mechanism adjusts the position of the fiber core rod relative to the first heating furnace; the second rod feeding mechanism adjusts the position of the cladding rod relative to the second heating furnace;
the ultrasonic range finder comprises a first ultrasonic range finder and a second ultrasonic range finder; the first ultrasonic range finder is used for detecting the height of the fiber core liquid of the inner cavity; the second ultrasonic range finder is used for detecting the height of the cladding liquid of the outer cavity; the first ultrasonic range finder is arranged above the inner-layer cavity; the second ultrasonic range finder is arranged above the outer layer cavity; the first ultrasonic range finder and the second ultrasonic range finder are positioned below the first heating furnace.
2. The optical fiber processing apparatus of claim 1, wherein the fiber synthesis funnel further comprises a connection frame; the inner funnel and the outer funnel are fixed by the connecting frame.
3. The optical fiber processing apparatus of claim 2, wherein the connection frame comprises a plurality of connection ribs; the connecting ribs are connected with the inner funnel and the outer funnel; a plurality of the connection rib encircles interior funnel evenly sets up.
4. The optical fiber processing apparatus according to claim 1, further comprising a first caliper for detecting a fiber diameter of the core wire wrapped with the clad.
5. The optical fiber processing apparatus according to claim 4, further comprising a coating curing device for coating a surface layer of the optical fiber with the resin and a second caliper for detecting a wire diameter of the optical fiber coated with the resin.
6. The optical fiber processing apparatus of claim 5, wherein the coating curing device is located between the first caliper and the second caliper.
7. The optical fiber processing apparatus according to claim 5, wherein the number of the coating and curing devices is two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806852.XA CN113387557B (en) | 2018-07-26 | 2018-07-26 | Optical fiber processing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110806852.XA CN113387557B (en) | 2018-07-26 | 2018-07-26 | Optical fiber processing device |
| CN201810835695.3A CN108929032B (en) | 2018-07-26 | 2018-07-26 | Optical fiber processing method |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810835695.3A Division CN108929032B (en) | 2018-07-26 | 2018-07-26 | Optical fiber processing method |
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| CN113387557A CN113387557A (en) | 2021-09-14 |
| CN113387557B true CN113387557B (en) | 2022-11-04 |
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| CN201810835695.3A Active CN108929032B (en) | 2018-07-26 | 2018-07-26 | Optical fiber processing method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078309A (en) * | 1992-01-30 | 1993-11-10 | 古河电气工业株式会社 | The manufacture method of fibre-optical preform |
| CN1603262A (en) * | 2003-09-22 | 2005-04-06 | 肖特股份有限公司 | Device and method for producing glass fibers |
| CN1938618A (en) * | 2004-03-31 | 2007-03-28 | 富士胶片株式会社 | Plastic optical fiber and method for manufacturing the same |
| CN106495463A (en) * | 2016-10-11 | 2017-03-15 | 中国科学院上海光学精密机械研究所 | The composite fiber preparation method that covering made by core material quartz made by optical crystal and pottery |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6217033A (en) * | 1985-07-16 | 1987-01-26 | Kokusai Denshin Denwa Co Ltd <Kdd> | Production of base material for fluoride glass fiber and its device |
| JPS6246934A (en) * | 1985-08-22 | 1987-02-28 | Kokusai Denshin Denwa Co Ltd <Kdd> | Method and apparatus for producing base material for fluoride glass fiber |
| JPS6374930A (en) * | 1986-09-17 | 1988-04-05 | Kokusai Denshin Denwa Co Ltd <Kdd> | Production of preform for fluoride glass fiber and apparatus therefor |
| JPH0729804B2 (en) * | 1987-02-02 | 1995-04-05 | 日本電信電話株式会社 | Method for producing fluorinated optical fiber base material |
| JPS63206323A (en) * | 1987-02-18 | 1988-08-25 | Sumitomo Electric Ind Ltd | Production of preform for optical fiber of fluoride glass |
| EP1184339A3 (en) * | 2000-09-01 | 2002-09-04 | A.R.T.-Photonics GmbH | Optical fibre and manufacturing processes for an optical fibre |
| CN104692650B (en) * | 2015-02-13 | 2017-04-19 | 华南理工大学 | Equipment and method for preparing optical fiber |
| CN105060700B (en) * | 2015-08-07 | 2018-01-12 | 中国科学院上海光学精密机械研究所 | Soft glass preform producing device and method |
-
2018
- 2018-07-26 CN CN202110806852.XA patent/CN113387557B/en active Active
- 2018-07-26 CN CN201810835695.3A patent/CN108929032B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1078309A (en) * | 1992-01-30 | 1993-11-10 | 古河电气工业株式会社 | The manufacture method of fibre-optical preform |
| CN1603262A (en) * | 2003-09-22 | 2005-04-06 | 肖特股份有限公司 | Device and method for producing glass fibers |
| CN1938618A (en) * | 2004-03-31 | 2007-03-28 | 富士胶片株式会社 | Plastic optical fiber and method for manufacturing the same |
| CN106495463A (en) * | 2016-10-11 | 2017-03-15 | 中国科学院上海光学精密机械研究所 | The composite fiber preparation method that covering made by core material quartz made by optical crystal and pottery |
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| Publication number | Publication date |
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| CN113387557A (en) | 2021-09-14 |
| CN108929032A (en) | 2018-12-04 |
| CN108929032B (en) | 2021-08-31 |
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