CN108585469B - Method for producing optical fiber - Google Patents
Method for producing optical fiber Download PDFInfo
- Publication number
- CN108585469B CN108585469B CN201810833860.1A CN201810833860A CN108585469B CN 108585469 B CN108585469 B CN 108585469B CN 201810833860 A CN201810833860 A CN 201810833860A CN 108585469 B CN108585469 B CN 108585469B
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- optical fiber
- auxiliary rod
- rod
- fiber preform
- laser
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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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/20—Uniting glass pieces by fusing without substantial reshaping
- C03B23/207—Uniting glass rods, glass tubes, or hollow glassware
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Coupling Of Light Guides (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a preparation method of an optical fiber, which comprises the following steps; 1) welding the optical fiber preform and the auxiliary rod together; 2) carrying out wire drawing operation on the fused optical fiber preform; 3) coating and curing the optical fiber filaments; wherein, the step 1) is to weld the optical fiber preform with the auxiliary rod welding device; optical fiber perform and auxiliary rod welding set includes: the device comprises a plurality of blowlamps, 2 three-jaw chucks, a heat-insulating ceramic sleeve, an adjusting device, a base, a movable seat and a hydraulic push rod, wherein the blowlamps are used for welding an optical fiber preform rod and an auxiliary rod; the heat insulation ceramic sleeve is provided with an axial laser emitter; radial laser transmitters are respectively arranged on the two clamping jaws of the three-jaw chuck. The preparation method of the optical fiber has the advantages that the butt joint accuracy can be guaranteed, bending of the welding position is avoided, and the optical fiber processing is prevented from being influenced by welding bending of the optical fiber preform rod and the auxiliary rod.
Description
Technical Field
The invention relates to a preparation method of an optical fiber.
Background
An optical fiber preform is a material preform that can be used to draw an optical fiber, and is a core raw material for manufacturing a silica-based optical fiber. When an optical fiber is drawn from an optical fiber preform, an auxiliary rod needs to be fused to one end of the optical fiber preform to assist in drawing the optical fiber. Traditional auxiliary rod and optical fiber perform fusion splice position inaccuracy when the butt fusion, and easy butt fusion back butt fusion department forms the bending, leads to needing many times the butt fusion. And the optical fiber perform is easy to be damaged in the process of multiple clamping and welding.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the preparation method of the optical fiber, which can ensure the accuracy of the welding position and avoid the bending of the welding position.
In order to achieve the above object, the present invention adopts the following technical solutions:
a method for preparing an optical fiber includes the following steps;
1) welding the optical fiber preform and the auxiliary rod together;
2) carrying out wire drawing operation on the fused optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, the step 1) is to weld the optical fiber preform with the auxiliary rod welding device;
optical fiber perform and auxiliary rod welding set includes: the device comprises a plurality of blowlamps, 2 three-jaw chucks, a heat-insulating ceramic sleeve, an adjusting device, a base, a movable seat and a hydraulic push rod, wherein the blowlamps are used for welding an optical fiber preform rod and an auxiliary rod; the heat insulation ceramic sleeve is provided with an axial laser emitter; two claws of the three-claw chuck are respectively provided with a radial laser transmitter; the laser light emitted by the axial laser emitter penetrates through the optical fiber perform and the auxiliary rod along the axis of the optical fiber perform; laser rays emitted by two radial laser emitters of the same three-jaw chuck are intersected to form an intersection point; the hydraulic push rod drives the movable seat to slide relative to the base; the three-jaw chuck is mounted to the movable seat; the heat insulation ceramic sleeve is sleeved on the periphery of the auxiliary rod; a plurality of torches surrounds the auxiliary rod.
Further, the adjusting device includes: a first linear module and a second linear module; the first linear module comprises a first motor and a first sliding table; the second linear module comprises a second motor and a second sliding table; the heat insulation ceramic sleeve is fixed to the first sliding table; the first linear module is mounted to the second sliding table; the first motor drives the first sliding table to move along a first straight line; the second motor drives the second sliding table to move along a second straight line; the first straight line, the second straight line and the laser light emitted by the axial laser emitter are perpendicular to each other.
Further, the adjusting device includes: an angle adjusting device for adjusting the angle of the auxiliary rod relative to the optical fiber preform; the angle adjusting device includes: a support plate and an electric push rod; one end of the supporting plate is rotatably connected to the base; the electric push rod drives the supporting plate to rotate relative to the base; the electric push rod is mounted to the base; the second linear module is mounted to the support plate.
Further, the angle adjusting device further comprises a supporting rod: the supporting rod is fixed to one end of the electric push rod; the support rod is in contact with the bottom of the support plate.
Further, the angle adjusting device also comprises a supporting frame; the supporting plate is rotatably connected to the supporting frame; the support frame is fixed to the base.
Furthermore, a camera lens used for shooting the intersection of laser rays is arranged on the jaw of the three-jaw chuck, which is not provided with the radial laser transmitter.
Furthermore, the optical fiber preform and auxiliary rod welding device also comprises a lens for adjusting the linear diameter of the laser ray emitted by the axial laser emitter; the lens is slidably connected to the insulating ceramic sleeve; the lens is arranged between the axial laser emitter and the auxiliary rod.
Further, the optical fiber preform is clamped by the three-jaw chuck; fixing the auxiliary rod to the heat-insulating ceramic sleeve; the movable seat moves relative to the base to enable the optical fiber preform rod to move towards the direction close to the auxiliary rod; starting an axial laser transmitter and a radial laser transmitter; and adjusting the position of the auxiliary rod to enable the laser rays emitted by the axial laser emitter to sequentially pass through the intersection point where the laser rays emitted by the two pairs of radial laser emitters are intersected.
Further, the movable base moves relative to the base to make the optical fiber preform contact the auxiliary rod.
Further, the end face of the auxiliary rod in contact with the optical fiber preform is polished to make the contact face flat.
The invention has the advantages that the butt joint accuracy can be ensured by positioning the axial laser emitter and the radial laser emitter, and the bending of the welding position of the auxiliary rod and the optical fiber perform rod is avoided. Avoid because optical fiber perform and supplementary excellent butt fusion bending influence optical fiber processing.
Optical fiber perform and auxiliary rod welding device are after confirming the butt fusion position, adjust the auxiliary rod to the butt fusion position through adjusting device and carry out the butt fusion, thereby can avoid relapse clamping butt fusion optical fiber perform and auxiliary rod to cause the damage to optical fiber perform.
Drawings
FIG. 1 is a flow chart of a method of making an optical fiber of the present invention;
FIG. 2 is a schematic view of a fusion splicing apparatus for an optical fiber preform and an auxiliary rod used in the method for manufacturing the optical fiber of FIG. 1;
FIG. 3 is a schematic view of an adjusting device of the apparatus for fusion-splicing an optical fiber preform with an auxiliary rod of FIG. 2;
FIG. 4 is a schematic view of the three-jaw chuck holding an optical fiber preform of the apparatus for fusion-splicing an optical fiber preform with an auxiliary rod of FIG. 2;
FIG. 5 is a schematic view of the radial laser emitters of the apparatus for fusion-splicing an optical fiber preform with a sub-rod of FIG. 2, showing the junction of the two radial laser emitters emitting laser light;
fig. 6 is a schematic view of a torch of the fusion apparatus for an optical fiber preform and an auxiliary rod of fig. 2.
Optical fiber perform and auxiliary rod welding device 100, blowtorch 10, three-jaw chuck 20, axial laser emitter 21, radial laser emitter 22, camera lens 23, thermal-insulated ceramic cover 30, adjusting device 40, first linear module 41, first motor 411, first slip table 412, second linear module 42, second motor 421, second slip table 422, angle adjusting device 43, backup pad 431, electric putter 432, bracing piece 433, support frame 434, base 50, sliding seat 60, hydraulic putter 70.
Detailed Description
The invention is described in detail below with reference to the figures and the embodiments.
As shown in fig. 1, a method for manufacturing an optical fiber includes the steps of;
1) welding the optical fiber preform and the auxiliary rod together;
2) carrying out wire drawing operation on the fused optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, step 1) carries on the fusion with the auxiliary rod fusion apparatus 100 through the prefabricated stick of optical fiber;
as shown in fig. 1 to 6, the fusion splicing apparatus 100 for an optical fiber preform and an auxiliary rod is provided to which the above-described optical fiber manufacturing method is applied.
The optical fiber preform and auxiliary rod fusion splicing apparatus 100 includes: a plurality of torches 10, 2 three-jaw chucks 20, a heat insulating ceramic sheath 30, an adjusting device 40, a base 50, a movable seat 60, and a hydraulic push rod 70. The plurality of torches 10 perform fusion splicing of the optical fiber preform 201 and the auxiliary rod 202. When the fusion-spliced position of the optical fiber preform 201 and the auxiliary rod 202 is determined, the fusion-spliced position is heated and fused from a plurality of directions by a plurality of torches 10 to perform fusion-splicing, as shown in fig. 5. The fusion of the pair of optical fiber preform 201 and the auxiliary rod 202 by the torch 10 from a plurality of directions can ensure that the fusion position is uniformly heated in the circumferential direction, so that the fusion in the circumferential direction is uniform. 2 three-jaw chucks 20 are used to hold the optical fiber preform 201. The insulating ceramic sheath 30 is used to fix the auxiliary rod 202. The adjusting means 40 is used to adjust the position of the insulating ceramic sheath 30 and thus the position of the auxiliary rod 202. The three-jaw chuck 20 is mounted to a movable mount 60. The hydraulic push rod 70 drives the movable base 60 to slide relative to the base 50 so as to drive the optical fiber preform 201 clamped by the three-jaw chuck 20 to slide. The insulating ceramic sheath 30 is sleeved on the outer periphery of the auxiliary rod 202. A plurality of torches 10 surrounds the auxiliary rod 202.
The insulating ceramic sheath 30 is fitted with an axial laser emitter 21. Radial laser transmitters 22 are respectively mounted on the two jaws 20a of the three-jaw chuck 20. The laser light emitted from the axial laser transmitter 21 passes through the optical fiber preform 201 and the auxiliary rod 202 along the axis of the optical fiber preform 201. The laser rays emitted by two radial laser emitters 22 of the same three-jaw chuck 20 intersect to form a point of intersection. The laser rays emitted by the two radial laser emitters 22 of the two three-jaw chucks 20 intersect to form two intersection points.
Specifically, the auxiliary rod 202 is fixed to the insulating ceramic sheath 30. The positions of the insulating ceramic sheath 30 and the auxiliary rod 202 are adjusted by the adjusting device 40 until the laser light emitted from the axial laser transmitter 21 passes through the two intersection points at the same time. At this time, the optical fiber preform 201 and the auxiliary rod 202 are in a state of being aligned. The optical fiber preform 201 is aligned with and contacts the auxiliary rod 202, which is a fusion-spliced position. The hydraulic push rod 70 drives the movable seat 60 to slide relative to the base 50, so as to drive the optical fiber preform 201 to move towards the auxiliary rod 202 along a straight line until one end of the optical fiber preform 201 contacts one end of the auxiliary rod 202. The plurality of torches 10 are operated to fuse the optical fiber preform 201 and the auxiliary rod 202. As a specific embodiment, the end surfaces of the auxiliary rod 202 and the optical fiber preform 201 that contact each other are polished to make the contact surfaces flat.
As a preferred embodiment, the adjusting device 40 includes: a first linear module 41 and a second linear module 42. The first linear module 41 includes a first motor 411 and a first slide table 412. The second linear module 42 includes a second motor 421 and a second slide table 422. The insulating ceramic sheath 30 is fixed to the first slide 412. The first linear module 41 is mounted to the second slide table 422. When the second sliding table 422 moves, the insulating ceramic sleeves 30 on the first sliding table 412 can be driven to move synchronously. Specifically, the first motor 411 drives the first slide table 412 to move along the first line so as to adjust the position of the auxiliary rod 202 on the first line. The second motor 421 drives the second slide table 422 to move along the second straight line so as to adjust the position of the auxiliary rod 202 on the second straight line. The first line, the second line and the laser ray emitted by the axial laser emitter 21 are perpendicular to each other. The axial laser transmitter 21 can penetrate the optical fiber preform 201 and the auxiliary rod 202 along the axis of the optical fiber preform 201 by adjusting the positions of the insulating ceramic sheath 30 and the auxiliary rod 202. Therefore, the laser light emitted by the axial laser emitter 21 passes through the two intersection points simultaneously, and welding positioning is realized.
As a preferred embodiment, the adjusting device 40 further comprises: an angle adjusting device 43. The angle adjusting means 43 can adjust the angle of the auxiliary rod 202 with respect to the optical fiber preform 201 so that the axial laser transmitter 21 can penetrate the optical fiber preform 201 and the auxiliary rod 202 along the axis of the optical fiber preform 201. Specifically, the angle adjusting device 43 includes: a support plate 431 and an electric push rod 432. The second linear module 42 is mounted to the support plate 431. One end of the support plate 431 is rotatably connected to the base 50. The electric push rod 432 drives the supporting plate 431 to rotate relative to the base 50 to drive the second linear module 42 to rotate relative to the base 50. At the same time, the auxiliary rod 202 fixed to the second linear die set 42 is also rotated with respect to the base 50, thereby achieving adjustment of the angle of the auxiliary rod 202 with respect to the optical fiber preform 201. An electric push rod 432 is mounted to the base 50.
As a preferred embodiment, the angle adjusting means 43 further comprises a support rod 433: a support bar 433 is fixed to one end of the electric push rod 432; the support rod 433 is in contact with the bottom of the support plate 431.
As a preferred embodiment, the angle adjusting means 43 further comprises a supporting frame 434; the supporting plate 431 is rotatably connected to the supporting bracket 434; the support bracket 434 is fixed to the base 50.
In a preferred embodiment, the jaws 20a of the three-jaw chuck 20, which are not provided with the radial laser transmitter 22, are provided with a camera lens 23 for photographing the intersection of laser beams. The image captured by the camera lens 23 can be used to observe whether the laser beam emitted from the axial laser emitter 21 passes through the two intersection points simultaneously. If the laser light emitted from the axial laser transmitter 21 does not pass through the above-mentioned two intersection points at the same time, it is necessary to continue adjusting the positions of the optical fiber preform 201 and the auxiliary rod 202.
As a preferred embodiment, the apparatus 100 for fusion-splicing an optical fiber preform and an auxiliary rod further includes a lens for adjusting the line diameter of the laser beam emitted from the axial laser transmitter 21. The lens is slidably attached to the insulating ceramic sheath 30. The lens is disposed between the axial laser transmitter 21 and the auxiliary rod 202.
Based on the above, the method for preparing the optical fiber further comprises the following steps:
the three-jaw chuck 20 clamps the optical fiber preform;
fixing the auxiliary rod to the heat-insulating ceramic sleeve;
the movable base 60 moves relative to the base 50 to move the optical fiber preform rod to a direction close to the auxiliary rod;
starting the axial laser emitter 21 and the radial laser emitter 22;
the position of the auxiliary rod is adjusted to enable the laser light emitted by the axial laser emitter 21 to sequentially pass through the intersection point where the laser light emitted by the two pairs of radial laser emitters 22 are converged.
The temperature of the optical fiber hot melting furnace is 1950-2050 ℃. The linear speed of the wire drawing is 980-1050 m/min.
Specifically, the movable base 60 moves relative to the base 50 to contact the optical fiber preform with the auxiliary rod.
Specifically, the end face of the auxiliary rod in contact with the optical fiber preform is polished to make the contact face flat.
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 (10)
1. A method for producing an optical fiber, comprising the steps of;
1) welding the optical fiber preform and the auxiliary rod together;
2) carrying out wire drawing operation on the fused optical fiber preform;
3) coating and curing the optical fiber filaments;
wherein, the step 1) is to weld the optical fiber preform with the auxiliary rod welding device;
the optical fiber perform and auxiliary rod fusion splicing device comprises: the device comprises a plurality of blowlamps, 2 three-jaw chucks, a heat-insulating ceramic sleeve, an adjusting device, a base, a movable seat and a hydraulic push rod, wherein the blowlamps are used for welding an optical fiber preform rod and an auxiliary rod; the heat insulation ceramic sleeve is provided with an axial laser emitter; two claws of the three-claw chuck are respectively provided with a radial laser transmitter; the laser light emitted by the axial laser emitter penetrates through the optical fiber preform rod and the auxiliary rod along the axis of the optical fiber preform rod; the laser rays emitted by two radial laser emitters of the same three-jaw chuck are intersected to form an intersection point; the hydraulic push rod drives the movable seat to slide relative to the base; the three-jaw chuck is mounted to the movable seat; the heat insulation ceramic sleeve is sleeved on the periphery of the auxiliary rod; a plurality of said torches surrounding said auxiliary rod;
the positions of the heat-insulating ceramic sleeve and the auxiliary rod are adjusted through the adjusting device until laser rays emitted by the axial laser emitter pass through the two intersection points, the optical fiber perform and the auxiliary rod are in a state of being aligned at the moment, the optical fiber perform is aligned and contacted with the auxiliary rod, and the position is a welding position.
2. The method for producing an optical fiber according to claim 1,
the adjusting device comprises: a first linear module and a second linear module; the first linear module comprises a first motor and a first sliding table; the second linear module comprises a second motor and a second sliding table; the heat insulation ceramic sleeve is fixed to the first sliding table; the first linear module is mounted to the second sliding table; the first motor drives the first sliding table to move along a first straight line; the second motor drives the second sliding table to move along a second straight line; the first straight line, the second straight line and the laser light emitted by the axial laser emitter are perpendicular to each other.
3. The method for producing an optical fiber according to claim 2,
the adjusting device comprises: an angle adjusting device for adjusting the angle of the auxiliary rod relative to the optical fiber preform; the angle adjusting device includes: a support plate and an electric push rod; one end of the supporting plate is rotatably connected to the base; the electric push rod drives the supporting plate to rotate relative to the base; the electric push rod is mounted to the base; the second linear module is mounted to the support plate.
4. The method for producing an optical fiber according to claim 3,
the angle adjusting device further comprises a supporting rod: the supporting rod is fixed to one end of the electric push rod; the support rod is in contact with the bottom of the support plate.
5. The method for producing an optical fiber according to claim 3,
the angle adjusting device also comprises a supporting frame; the supporting plate is rotatably connected to the supporting frame; the support bracket is fixed to the base.
6. The method for producing an optical fiber according to any one of claims 1 to 5,
and the claws of the three-claw chuck, which are not provided with the radial laser transmitter, are provided with camera lenses for shooting laser ray intersections.
7. The method for producing an optical fiber according to any one of claims 1 to 5,
the optical fiber preform and auxiliary rod fusion welding device further comprises a lens for adjusting the linear diameter of the laser ray emitted by the axial laser emitter; the lens is slidably connected to the insulating ceramic sleeve; the lens is arranged between the axial laser emitter and the auxiliary rod.
8. The method of manufacturing an optical fiber according to claim 1, further comprising the steps of;
the three-jaw chuck clamps the optical fiber preform;
fixing the auxiliary rod to the heat-insulating ceramic sleeve;
the movable seat moves relative to the base to enable the optical fiber preform rod to move towards the direction close to the auxiliary rod;
starting the axial laser transmitter and the radial laser transmitter;
and adjusting the position of the auxiliary rod to enable the laser rays emitted by the axial laser emitter to sequentially pass through the intersection point where the laser rays emitted by the two pairs of radial laser emitters are intersected.
9. The method of manufacturing an optical fiber according to claim 1, further comprising the steps of;
the movable seat moves relative to the base to enable the optical fiber preform rod to contact the auxiliary rod.
10. The method of manufacturing an optical fiber according to claim 1, further comprising the steps of;
and polishing the contact end surfaces of the auxiliary rod and the optical fiber perform rod so as to make the contact surfaces flat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011354691.7A CN112521000B (en) | 2018-07-26 | 2018-07-26 | Fusion welding device for optical fiber preform and auxiliary rod |
| CN201810833860.1A CN108585469B (en) | 2018-07-26 | 2018-07-26 | Method for producing optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810833860.1A CN108585469B (en) | 2018-07-26 | 2018-07-26 | Method for producing optical fiber |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011354691.7A Division CN112521000B (en) | 2018-07-26 | 2018-07-26 | Fusion welding device for optical fiber preform and auxiliary rod |
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| Publication Number | Publication Date |
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| CN108585469A CN108585469A (en) | 2018-09-28 |
| CN108585469B true CN108585469B (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011354691.7A Active CN112521000B (en) | 2018-07-26 | 2018-07-26 | Fusion welding device for optical fiber preform and auxiliary rod |
| CN201810833860.1A Active CN108585469B (en) | 2018-07-26 | 2018-07-26 | Method for producing optical fiber |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011354691.7A Active CN112521000B (en) | 2018-07-26 | 2018-07-26 | Fusion welding device for optical fiber preform and auxiliary rod |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113636746B (en) * | 2019-07-15 | 2023-05-09 | 富通集团（嘉善）通信技术有限公司 | Fusion welding equipment for optical fiber perform |
| CN111940908B (en) * | 2020-08-25 | 2021-11-16 | 烟台大学 | Micro-texture processing equipment for deep brain stimulation sleeve electrode |
| CN111940909B (en) * | 2020-08-25 | 2021-11-16 | 烟台大学 | Platform for preparing micro-texture of deep brain stimulation sleeve electrode |
| CN117342785B (en) * | 2023-12-06 | 2024-02-09 | 深圳市天域方兴科技有限公司 | Fusion monitoring method and system for master batch rod in optical fiber capillary production |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112521000B (en) | 2022-06-10 |
| CN108585469A (en) | 2018-09-28 |
| CN112521000A (en) | 2021-03-19 |
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