CN116974001A - Preparation device and preparation method of ultra-long single crystal optical fiber - Google Patents
Preparation device and preparation method of ultra-long single crystal optical fiber Download PDFInfo
- Publication number
- CN116974001A CN116974001A CN202310784342.6A CN202310784342A CN116974001A CN 116974001 A CN116974001 A CN 116974001A CN 202310784342 A CN202310784342 A CN 202310784342A CN 116974001 A CN116974001 A CN 116974001A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- driving
- wheel
- single crystal
- storage
- 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
Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 159
- 239000013078 crystal Substances 0.000 title claims abstract description 109
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 238000000137 annealing Methods 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 3
- 238000003860 storage Methods 0.000 claims description 62
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000003384 imaging method Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000011081 inoculation Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 description 15
- 230000005611 electricity Effects 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000004033 diameter control Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000002109 crystal growth method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 206010016165 failure to thrive Diseases 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004093 laser heating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B13/00—Single-crystal growth by zone-melting; Refining by zone-melting
- C30B13/005—Continuous growth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H54/00—Winding, coiling, or depositing filamentary material
- B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
- B65H54/40—Arrangements for rotating packages
- B65H54/46—Package drive drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/14—Pulleys, rollers, or rotary bars
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B33/00—After-treatment of single crystals or homogeneous polycrystalline material with defined structure
- C30B33/02—Heat treatment
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4457—Bobbins; Reels
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12166—Manufacturing methods
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/10—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type
- G02B6/12—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings of the optical waveguide type of the integrated circuit kind
- G02B2006/12166—Manufacturing methods
- G02B2006/12169—Annealing
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The invention discloses a preparation device of an ultra-long single crystal optical fiber, which comprises a heating device, a feeding device, an annealing device, a guiding device and a tensioning and accommodating device, wherein the heating device is used for heating the optical fiber; the heating device comprises a laser emission device, a beam-changing ring device and an annular focusing device, and the annular focusing device can focus the hollow annular light beam below the annular focusing device; the feeding device comprises an optical fiber raw material rod and a feeding device which is fixed with the optical fiber raw material rod and can drive the optical fiber raw material rod to move along the vertical direction, and the optical fiber raw material rod is positioned below the annular focusing device; the guiding device is positioned above the annular focusing device and can clamp and drive the optical fiber and the seed crystal to move upwards or downwards; the annealing device is positioned between the focusing point of the annular focusing device and the guiding device and is used for annealing the single crystal optical fiber; the tension housing device is capable of winding and housing the single crystal optical fiber. The invention realizes seed crystal inoculation to grow single crystal optical fibers by heating the top of the optical fiber raw material rod.
Description
Technical Field
The invention relates to the technical field of optical fiber preparation, in particular to a preparation device and a preparation method of an ultra-long single crystal optical fiber.
Background
The single crystal optical fiber is made of single crystal material, and has the chemical and physical characteristics of single crystal material, and features of anti-electromagnetic interference, good light transmission, small size, light weight, etc. With the rapid development of optical fiber sensing technology and fiber laser technology and the continuous improvement of the preparation technology of single crystal optical fibers in recent years, single crystal optical fibers with different matrixes are getting more and more attention from researchers in the industry in both growth and application.
The crystal optical fiber has a small crystal diameter, the traditional crystal growth method cannot meet the growth requirement, and the current general growth mode of the single crystal optical fiber is a laser heating base method. The mature technology reported in China can realize the growth of single crystal optical fibers with the diameter of less than 60 mu m, the diameter of the single crystal optical fibers is basically consistent with that of quartz optical fibers, and although the single crystal optical fibers have a plurality of advantages compared with the quartz optical fibers, the single crystal optical fibers are limited by the growth length and cannot be effectively applied to the fields of fiber-optic gyroscopes, fiber-optic lasers and power lasers and can not be used for replacing the quartz optical fibers. The following difficulties are presented when growing ultra-long ultra-fine single crystal optical fibers: the superfine single crystal optical fiber with the length exceeding a certain degree can generate morphological bending, so that a growth interface is deviated, the diameter control of the crystal is directly affected, and a melting area is out of control when serious; the superfine single crystal optical fiber has large specific surface area, and the surface is easier to supercool to release stress, so that crystal cracking is caused to cause crystal growth failure; when the crystal diameter of the single crystal optical fiber reaches 100 mu m, the single crystal optical fiber is in a resonance state due to the disturbance and vibration of external air and the movement of a crystal growth structure, so that the control of the crystal diameter is invalid.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to solve the technical problems that: provided is a device for manufacturing an ultra-long single-crystal optical fiber, which can stably grow a single-crystal optical fiber, simultaneously perform on-line annealing stress relief treatment on the single-crystal optical fiber, and simultaneously house the single-crystal optical fiber.
In order to solve the technical problems, the invention adopts the following technical scheme:
a preparation device of ultra-long single crystal optical fibers comprises a heating device, a feeding device, an annealing device, a guiding device and a tensioning and accommodating device;
the heating device comprises a laser emission device, a beam-changing ring device and an annular focusing device, wherein the laser emitter is arranged towards the beam-changing ring device, the beam-changing ring device can change a laser beam emitted by the laser emitter into a hollow annular beam and can emit a hollow annular beam folding shaft to the annular focusing device, and the annular focusing device is horizontally arranged and can focus the hollow annular beam below the annular focusing device;
the feeding device comprises an optical fiber raw material rod and a feeding device which is fixed with the optical fiber raw material rod and can drive the optical fiber raw material rod to move along the vertical direction, the optical fiber raw material rod is positioned below the annular focusing device and is arranged at the same central line with the annular focusing device, and when the optical fiber raw material rod moves upwards, the top of the optical fiber raw material rod can move to the focusing point of the annular focusing device;
the guide device comprises a guide wheel bracket positioned above the annular focusing device, a driving wheel group and a driven wheel group positioned below the driving wheel group are arranged on the guide wheel bracket, the driving wheel group comprises two driving wheels which are opposite in the horizontal direction and are vertically arranged, the two driving wheels are opposite in the radial direction, V-shaped driving grooves are formed on the peripheral surface of the driving wheels in a surrounding manner around the central line direction of the driving wheels, the two V-shaped driving grooves are opposite and form an optical fiber clamping driving space, the center of the optical fiber clamping driving space is positioned on an extension line of the central line of the annular focusing device, driving brackets are respectively arranged on the guide wheel brackets corresponding to the positions of the driving wheels, the driving wheels are rotatably connected to the corresponding driving brackets, and a guide wheel electric driving device for driving the driving wheels to rotate is arranged on the driving brackets;
the driven wheel group comprises two driven wheels which are oppositely and vertically arranged along the horizontal direction, the two driven wheels are oppositely arranged along the radial direction, V-shaped driven grooves are annularly arranged on the peripheral surface of the driven wheels around the central line direction of the driven wheels, the two V-shaped driven grooves are oppositely arranged and mutually form an optical fiber clamping and guiding space, the center of the optical fiber clamping and guiding space is positioned on the extension line of the central line of the annular focusing device, driven brackets are respectively arranged on guide wheel brackets corresponding to the positions of the driven wheels, and the driven wheels are rotatably connected to the corresponding driven brackets;
the annealing device is positioned between the focusing point of the annular focusing device and the guiding device and is used for annealing the single crystal optical fiber;
the tensioning storage device comprises a storage support and a storage wheel, wherein the storage wheel is located above the guide device, two ends of the storage wheel are fixedly connected with rotating shafts which are arranged on the same central line respectively, the rotating shafts are horizontally arranged and rotatably connected to the storage support, and the storage support is provided with a storage electric driving device for driving the storage wheel to rotate, so that the storage wheel can wind and store monocrystalline optical fibers.
As optimization, a guide wheel guide pipe which is concentric with the annular focusing device is vertically arranged below the optical fiber clamping guide space, the guide wheel guide pipe is fixedly connected to the guide wheel support, and the guide wheel guide pipe is used for enabling the single crystal optical fiber to pass through and guiding the single crystal optical fiber along the vertical direction. Firstly, the seed crystal is convenient to center with the optical fiber raw material rod when being arranged on the driving wheel and the driven wheel, and meanwhile, the straightness of the single crystal optical fiber in the growth process can be improved in the later period.
As an optimization, a storage guide tube which is coaxial with the annular focusing device is vertically arranged below the winding end of the storage wheel, the storage guide tube is fixedly connected to the storage support, and the storage guide tube is used for enabling the single crystal optical fiber to pass through and guiding the single crystal optical fiber in the vertical direction. Firstly, the seed crystal is convenient to center with the optical fiber raw material rod when being arranged on the driving wheel and the driven wheel, and meanwhile, the straightness of the single crystal optical fiber in the growth process can be improved in the later period.
As optimization, the guiding device further comprises a horizontal displacement adjusting device, wherein the driving end of the horizontal displacement adjusting device is fixedly connected to the guide wheel support and can drive the guide wheel support to move so that the center of the optical fiber clamping driving space and the center of the optical fiber clamping guiding space can be located on an extension line of the central line of the annular focusing device. After the seed crystal is arranged on the driving wheel and the driven wheel, the seed crystal can be conveniently centered with the optical fiber raw material rod through the translation of the guide wheel bracket.
As the optimization, tensioning storage device still includes tensioning degree controlling means and CCD image device, and tensioning degree controlling means is connected with CCD image device electricity, and CCD image device is used for being located tensioning storage device with monocrystalline optic fibre between the guider makes a video recording in real time, the pivot cover be equipped with accomodate support fixed connection and be used for detecting monocrystalline optic fibre tensioning force's pivot type tension sensor, pivot type tension sensor is connected with tensioning degree controlling means electricity, tensioning degree controlling means is connected with accomodate electric drive unit and guide pulley electric drive unit electricity respectively, and tensioning degree controlling means can handle diameter and straightness state that obtains monocrystalline optic fibre through the image of monocrystalline optic fibre that CCD image device obtained to according to monocrystalline optic fibre's diameter control drive wheel's rotational speed and according to monocrystalline optic fibre's straightness state control take in the rotational speed of wheel. The CCD imaging device transmits the optical fiber image to the tension control device in real time, the tension control device calculates and calibrates the diameter of the optical fiber and the deflection parameter of the optical fiber through the video image, and meanwhile, the shaft penetrating type tension sensor detects the tension of the single crystal optical fiber, so that the driving wheel or the receiving wheel can be correspondingly controlled according to the diameter and the straightness state of the optical fiber, and the forming quality of the optical fiber is improved.
As optimization, the storage wheel is a V-shaped wheel, the storage wheel is made of tetrafluoro or rubber, and the driving wheel and the driven wheel are made of rubber.
As optimization, a driving elastic connecting piece which is respectively and fixedly connected with the driving bracket and the guide wheel bracket is arranged between the driving bracket and the guide wheel bracket, and the two driving elastic connecting pieces can provide elastic force for the two driving wheels to move along the opposite directions; and driven elastic connecting pieces which are respectively and fixedly connected with the driven brackets are arranged between the driven brackets and the guide wheel brackets, and the two driven elastic connecting pieces can provide elastic force for the two driven wheels to move along the opposite directions. The driving wheel and the driven wheel can have a certain self-adaptive range for the diameter of the optical fiber, and the optical fiber can be clamped and conveyed in the range.
The invention also discloses a preparation method of the ultra-long single crystal optical fiber, which comprises the steps of using the preparation device of the ultra-long single crystal optical fiber to obtain seed crystals, sequentially passing through an optical fiber clamping driving space, an optical fiber clamping guiding space and an annular focusing device, respectively clamping the seed crystals by using a driving wheel and a driven wheel to ensure that the seed crystals are arranged at the same center line with the annular focusing device, starting a laser emitter, emitting laser beams, focusing below the annular focusing device after passing through a beam-changing ring device and the annular focusing device, starting a feeding device, enabling the upper end of an optical fiber raw material rod to move to the focusing point of the annular focusing device, enabling the top end of the optical fiber raw material rod to form a melting area, starting a guide wheel electric driving device, enabling the lower end of the seed crystals to move towards the focusing point of the annular focusing device through the driving wheel to finish butt joint of the seed crystals and the optical fiber raw material rod in the melting area, then finishing annealing process of the single crystal optical fiber after the single crystal optical fiber is finished, simultaneously starting a storage electric driving device to control a storage wheel to keep the same linear speed as the driving wheel to rotate, and further storing the single crystal optical fiber after the single crystal optical fiber is stored.
Compared with the prior art, the invention has the following beneficial effects: the invention heats the optical fiber raw material rod by an optical heating system, so that the top end of the optical fiber raw material rod forms a melting zone with a specific shape, and seed crystals arranged on the guiding device are used for inoculation. On the premise of a certain power, speed and atmosphere environment, the feeding device and the guiding device synchronously move upwards in a certain speed proportion range, the growth distortion and stress conditions are monitored in real time by using the tensioning and accommodating device, and stable growth and accommodation of the single crystal optical fiber are realized by calculating parameters such as the real-time adjustment of the power speed, so that the ultra-long optical fiber grade single crystal is finally obtained.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, the preparation device of the ultra-long single crystal optical fiber in the present embodiment comprises a heating device, a feeding device, an annealing device 6, a guiding device and a tensioning and accommodating device;
the heating device comprises a laser emission device, a beam-changing ring device and an annular focusing device 1, wherein the laser emitter is arranged towards the beam-changing ring device, the beam-changing ring device can change a laser beam emitted by the laser emitter into a hollow annular beam and can emit a hollow annular beam folding shaft to the annular focusing device 1, and the annular focusing device 1 is horizontally arranged and can focus the hollow annular beam below the annular focusing device 1;
the feeding device comprises an optical fiber raw material rod 2 and a feeding device which is fixed with the optical fiber raw material rod 2 and can drive the optical fiber raw material rod 2 to move along the vertical direction, wherein the optical fiber raw material rod 2 is positioned below the annular focusing device 1 and is arranged with the annular focusing device 2 at the same center line, and when the optical fiber raw material rod 2 moves upwards, the top of the optical fiber raw material rod 2 can move to the focusing point of the annular focusing device 1;
the guide device comprises a guide wheel bracket 3 positioned above the annular focusing device, a driving wheel group and a driven wheel group positioned below the driving wheel group are arranged on the guide wheel bracket 3, the driving wheel group comprises two driving wheels 4 which are opposite and vertically arranged along the horizontal direction, the two driving wheels 4 are opposite and arranged along the radial direction, V-shaped driving grooves are annularly arranged on the peripheral surface of the driving wheels 4 around the central line direction of the driving wheels 4, the two V-shaped driving grooves are opposite and mutually formed with an optical fiber clamping driving space, the center of the optical fiber clamping driving space is positioned on an extension line of the central line of the annular focusing device 1, driving brackets are respectively arranged on the guide wheel brackets 3 corresponding to the positions of the driving wheels 4, the driving wheels 4 are rotatably connected to the corresponding driving brackets, and guide wheel electric driving devices for driving the driving wheels 4 to rotate are arranged on the driving brackets;
the driven wheel group comprises two driven wheels 5 which are opposite in the horizontal direction and are vertically arranged, the two driven wheels 5 are opposite in the radial direction, V-shaped driven grooves are formed on the peripheral surface of the driven wheels 5 in a surrounding manner along the central line direction of the driven wheels, the two V-shaped driven grooves are opposite in arrangement and form optical fiber clamping guide spaces therebetween, the centers of the optical fiber clamping guide spaces are positioned on the extension lines of the central lines of the annular focusing device 1, driven brackets are respectively arranged on the guide wheel brackets 3 corresponding to the positions of the driven wheels 5, and the driven wheels 5 are rotatably connected to the corresponding driven brackets;
the annealing device 6 is positioned between the focusing point of the annular focusing device 1 and the guiding device and is used for carrying out annealing treatment on the single crystal optical fiber, carrying out in-situ annealing on the single crystal optical fiber and reducing the cracking phenomenon caused by supercooling of the single crystal optical fiber;
the tensioning storage device comprises a storage support 7 and a storage wheel 8, wherein the storage wheel 8 is located above the guide device, two ends of the storage wheel 8 are fixedly connected with rotating shafts 9 which are arranged on the same central line respectively, the rotating shafts 9 are horizontally arranged and rotatably connected to the storage support 7, a storage electric driving device for driving the storage wheel 8 to rotate is mounted on the storage support 7, and the storage wheel 8 can wind and store single crystal optical fibers.
In this embodiment, a guide wheel guiding tube 10 concentric with the annular focusing device 1 is vertically disposed below the optical fiber clamping guiding space, the guide wheel guiding tube 10 is fixedly connected to the guide wheel bracket 3, and the guide wheel guiding tube 10 is used for allowing the single crystal optical fiber to pass through and guiding the single crystal optical fiber along the vertical direction.
In this embodiment, be located take-up wheel 8's rolling end the below vertical be provided with take-up guide tube 11 with annular focusing device 1 concentric line, take-up guide tube 11 fixed connection is on taking-up support 7, take-up guide tube 11 is used for making single crystal optic fibre pass and can follow vertical direction and guide for single crystal optic fibre.
In this specific embodiment, the guiding device further includes a horizontal displacement adjusting device, and the driving end of the horizontal displacement adjusting device is fixedly connected to the guide wheel bracket 3 and can drive the guide wheel bracket 3 to move, so that the center of the optical fiber clamping driving space and the center of the optical fiber clamping guiding space can be located on an extension line of the center line of the annular focusing device 1.
In this embodiment, tensioning storage device still includes tension controlling means and CCD image device 12, and tension controlling means is connected with CCD image device 12 electricity, and CCD image device 12 is used for being located tensioning storage device with monocrystalline optic fibre between the guider makes a video recording in real time, the cover of pivot 9 be equipped with storage support 7 fixed connection just is used for detecting monocrystalline optic fibre tensioning force's pivot type tension sensor, pivot type tension sensor is connected with tension controlling means electricity, and tension controlling means is connected with storage electric drive device and guide pulley electric drive device electricity respectively, and tension controlling means can handle diameter and straightness state that obtains monocrystalline optic fibre through the image of monocrystalline optic fibre that CCD image device 12 obtained to according to monocrystalline optic fibre's diameter control drive wheel 4's rotational speed and according to monocrystalline optic fibre's straightness state control storage wheel 8's rotational speed. In the concrete implementation, the distance between the storage guide pipe 11 and the outlet of the driving wheel 4 is controlled to be 10-100 mm, so that the influence on the optical fiber form is reduced as much as possible; the CCD imaging device 12 has 200-2000 ten thousand pixels, and the imaging field is less than or equal to 1.5mm. Usually, when the tension value is actually controlled to be 50% -98% of the maximum tension value and the twist value (the ratio of twist displacement to diameter) of the single crystal optical fiber is 1.5-20, a better effect can be obtained for the growth of the single crystal optical fiber with the diameter of less than 200 mu m.
In this embodiment, the storage wheel 8 is a V-shaped wheel, the storage wheel 8 is made of a tetrafluoro material or a rubber material, and the driving wheel 4 and the driven wheel 5 are made of rubber materials.
In this embodiment, a driving elastic connecting piece 13 is disposed between the driving bracket and the guide wheel bracket 3 and is fixedly connected with the driving bracket and the guide wheel bracket, and the two driving elastic connecting pieces 13 can provide elastic force for the two driving wheels 4 to move along the opposite direction; driven elastic connecting pieces 14 which are respectively and fixedly connected with the driven brackets are arranged between the driven brackets and the guide wheel brackets 3, and the two driven elastic connecting pieces 14 can provide elastic force for the two driven wheels to move along the opposite direction of 4.
According to the preparation method of the ultra-long single crystal optical fiber, the seed crystal 15 is obtained by using the preparation device of the ultra-long single crystal optical fiber, the lower end of the seed crystal 15 sequentially passes through the optical fiber clamping driving space, the optical fiber clamping guiding space and the annular focusing device 1, the seed crystal 15 is respectively clamped by utilizing the driving wheel 4 and the driven wheel 5, the seed crystal 15 and the annular focusing device 1 are ensured to be arranged at the same center line, the laser emitter is started, the laser emitter emits laser beams, the beam-changing ring device and the annular focusing device 1 are used for focusing below the annular focusing device 1, the feeding device is started, the upper end of the optical fiber raw material rod 2 is moved to the focusing point of the annular focusing device 1, the top end of the optical fiber raw material rod 2 is formed into a melting area, the guide wheel electric driving device is started, the lower end of the seed crystal 15 is moved towards the focusing point of the annular focusing device 1 at a speed of 1-10 mm/min through the driving wheel 4, the butt joint of the seed crystal 15 and the optical fiber raw material rod 2 in the melting area is completed, then the optical fiber raw material rod 2 and the seed crystal 15 are started according to a moving speed ratio of 1:5, the laser emitter emits laser beams, the single crystal optical fibers are finished, the annealing process is completed, meanwhile, the storage wheel is controlled to keep the same line speed as the storage wheel 8, and the storage wheel is controlled to keep the storage wheel 4, and the rotation speed of the single crystal raw material rod is kept at the same at the line, and the rotation speed as the driving wheel 8, and the rotation is further realized.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the technical solution, and those skilled in the art should understand that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the present invention, and all such modifications and equivalents are included in the scope of the claims.
Claims (8)
1. A preparation device of an ultra-long single crystal optical fiber is characterized in that: comprises a heating device, a feeding device, an annealing device, a guiding device and a tensioning and accommodating device;
the heating device comprises a laser emission device, a beam-changing ring device and an annular focusing device, wherein the laser emitter is arranged towards the beam-changing ring device, the beam-changing ring device can change a laser beam emitted by the laser emitter into a hollow annular beam and can emit a hollow annular beam folding shaft to the annular focusing device, and the annular focusing device is horizontally arranged and can focus the hollow annular beam below the annular focusing device;
the feeding device comprises an optical fiber raw material rod and a feeding device which is fixed with the optical fiber raw material rod and can drive the optical fiber raw material rod to move along the vertical direction, the optical fiber raw material rod is positioned below the annular focusing device and is arranged at the same central line with the annular focusing device, and when the optical fiber raw material rod moves upwards, the top of the optical fiber raw material rod can move to the focusing point of the annular focusing device;
the guide device comprises a guide wheel bracket positioned above the annular focusing device, a driving wheel group and a driven wheel group positioned below the driving wheel group are arranged on the guide wheel bracket, the driving wheel group comprises two driving wheels which are opposite in the horizontal direction and are vertically arranged, the two driving wheels are opposite in the radial direction, V-shaped driving grooves are formed on the peripheral surface of the driving wheels in a surrounding manner around the central line direction of the driving wheels, the two V-shaped driving grooves are opposite and form an optical fiber clamping driving space, the center of the optical fiber clamping driving space is positioned on an extension line of the central line of the annular focusing device, driving brackets are respectively arranged on the guide wheel brackets corresponding to the positions of the driving wheels, the driving wheels are rotatably connected to the corresponding driving brackets, and a guide wheel electric driving device for driving the driving wheels to rotate is arranged on the driving brackets;
the driven wheel group comprises two driven wheels which are oppositely and vertically arranged along the horizontal direction, the two driven wheels are oppositely arranged along the radial direction, V-shaped driven grooves are annularly arranged on the peripheral surface of the driven wheels around the central line direction of the driven wheels, the two V-shaped driven grooves are oppositely arranged and mutually form an optical fiber clamping and guiding space, the center of the optical fiber clamping and guiding space is positioned on the extension line of the central line of the annular focusing device, driven brackets are respectively arranged on guide wheel brackets corresponding to the positions of the driven wheels, and the driven wheels are rotatably connected to the corresponding driven brackets;
the annealing device is positioned between the focusing point of the annular focusing device and the guiding device and is used for annealing the single crystal optical fiber;
the tensioning storage device comprises a storage support and a storage wheel, wherein the storage wheel is located above the guide device, two ends of the storage wheel are fixedly connected with rotating shafts which are arranged on the same central line respectively, the rotating shafts are horizontally arranged and rotatably connected to the storage support, and the storage support is provided with a storage electric driving device for driving the storage wheel to rotate, so that the storage wheel can wind and store monocrystalline optical fibers.
2. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: the lower part of the optical fiber clamping and guiding space is vertically provided with a guide wheel guiding pipe which is concentric with the annular focusing device, the guide wheel guiding pipe is fixedly connected to the guide wheel bracket, and the guide wheel guiding pipe is used for enabling the single crystal optical fiber to pass through and guiding the single crystal optical fiber along the vertical direction.
3. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: the lower part of the winding end of the storage wheel is vertically provided with a storage guide tube which is concentric with the annular focusing device, the storage guide tube is fixedly connected to the storage support, and the storage guide tube is used for enabling the single crystal optical fiber to pass through and guiding the single crystal optical fiber along the vertical direction.
4. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: the guide device further comprises a horizontal displacement adjusting device, wherein the driving end of the horizontal displacement adjusting device is fixedly connected to the guide wheel support and can drive the guide wheel support to move, so that the center of the optical fiber clamping driving space and the center of the optical fiber clamping guide space can be located on an extension line of the central line of the annular focusing device.
5. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: the tensioning and accommodating device further comprises a tensioning degree control device and a CCD imaging device, the tensioning degree control device is electrically connected with the CCD imaging device, the CCD imaging device is used for photographing monocrystalline optical fibers between the tensioning and accommodating device and the guiding device in real time, a shaft penetrating type tension sensor which is fixedly connected with the accommodating support and used for detecting the tensioning force of the monocrystalline optical fibers is sleeved on the rotating shaft, the shaft penetrating type tension sensor is electrically connected with the tensioning degree control device, the tensioning degree control device is respectively electrically connected with the accommodating electric driving device and the guide wheel electric driving device, the tensioning degree control device can process the diameter and straightness state of the monocrystalline optical fibers in images of the monocrystalline optical fibers obtained by the CCD imaging device, and the rotating speed of the driving wheel is controlled according to the diameter of the monocrystalline optical fibers and the rotating speed of the accommodating wheel is controlled according to the straightness state of the monocrystalline optical fibers.
6. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: the storage wheel is a V-shaped wheel, the storage wheel is made of tetrafluoro or rubber, and the driving wheel and the driven wheel are made of rubber.
7. The apparatus for producing an ultra-long single crystal optical fiber according to claim 1, wherein: a driving elastic connecting piece which is respectively and fixedly connected with the driving bracket and the guide wheel bracket is arranged between the driving bracket and the guide wheel bracket, and the two driving elastic connecting pieces can provide elastic force for the two driving wheels to move along the opposite directions; and driven elastic connecting pieces which are respectively and fixedly connected with the driven brackets are arranged between the driven brackets and the guide wheel brackets, and the two driven elastic connecting pieces can provide elastic force for the two driven wheels to move along the opposite directions.
8. A preparation method of an ultra-long single crystal optical fiber is characterized by using the preparation device of the ultra-long single crystal optical fiber according to claim 1, obtaining seed crystals, sequentially passing through an optical fiber clamping driving space, an optical fiber clamping guiding space and an annular focusing device at the lower end of the seed crystals, respectively clamping the seed crystals by using a driving wheel and a driven wheel, ensuring that the seed crystals are arranged at the same center line with the annular focusing device, starting a laser emitter, emitting laser beams, focusing below the annular focusing device after passing through a beam-changing ring device and the annular focusing device, starting a feeding device, enabling the upper end of an optical fiber raw material rod to move to the focusing point of the annular focusing device, enabling the top end of the optical fiber raw material rod to form a melting area, starting a guide wheel electric driving device, enabling the lower end of the seed crystals to move towards the focusing point of the annular focusing device through a driving wheel, completing the butt joint of the seed crystals and the optical fiber raw material rod in the melting area, then enabling the optical fiber raw material rod and the seed crystals to move upwards according to the moving speed proportion of (1:1) - (1:10), completing an annealing process for the single crystal optical fiber, simultaneously starting a storage electric driving device to control a storage wheel to keep the same line speed as the driving wheel to rotate, and storing the upper end of the seed crystals, and further storing the single crystal optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310784342.6A CN116974001A (en) | 2023-06-29 | 2023-06-29 | Preparation device and preparation method of ultra-long single crystal optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310784342.6A CN116974001A (en) | 2023-06-29 | 2023-06-29 | Preparation device and preparation method of ultra-long single crystal optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116974001A true CN116974001A (en) | 2023-10-31 |
Family
ID=88470405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310784342.6A Pending CN116974001A (en) | 2023-06-29 | 2023-06-29 | Preparation device and preparation method of ultra-long single crystal optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116974001A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966251A (en) * | 2024-04-02 | 2024-05-03 | 之江实验室 | Crystal rod preparation device, preparation method and crystal rod |
-
2023
- 2023-06-29 CN CN202310784342.6A patent/CN116974001A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117966251A (en) * | 2024-04-02 | 2024-05-03 | 之江实验室 | Crystal rod preparation device, preparation method and crystal rod |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10221087B2 (en) | Plant for producing an elongate element usable for producing an optical fibre | |
| CN107151092B (en) | A kind of preparation method and doped single crystal multi-core optical fiber of doped single crystal multi-core optical fiber | |
| CN106746593A (en) | A kind of spin fiber preparation method and equipment | |
| CN112759249A (en) | Optical fiber rotating device and optical fiber drawing system | |
| CN116974001A (en) | Preparation device and preparation method of ultra-long single crystal optical fiber | |
| CN106007360A (en) | Mechanism and method for online collimation adjustment of optical fiber perform | |
| CN115557320A (en) | Full-automatic winding device and method for optical fiber coil manufacturing | |
| CN113248135B (en) | Intermediate auxiliary traction device for optical fiber drawing tower | |
| US6978641B2 (en) | Method for cutting glass rod and cutting device for use therein | |
| US20030010066A1 (en) | Method and apparatus for manufacturing optical fiber | |
| CN112061874A (en) | Thread winding device for spinning | |
| GB2148874A (en) | Optical fibre fabrication by the rod-in-tube method | |
| JPS62856B2 (en) | ||
| CN102180594B (en) | Device for preparing ultra-long micro optical fiber | |
| EP0994078B1 (en) | Method for producing quartz glass preform for optical fibers | |
| CN214361014U (en) | Optical fiber rotating device and optical fiber drawing system | |
| CN216686902U (en) | Flat wire winding device with guide structure | |
| CN220115924U (en) | Winding equipment for processing communication optical fiber | |
| CN217579205U (en) | Tension adjusting device of spinning frame | |
| CN220887359U (en) | Optical fiber torsion drawing mechanism | |
| CN109029410B (en) | Optical fiber polarizer crystal growth manufacturing equipment | |
| CN214881928U (en) | Crystal growth equipment | |
| CN216733078U (en) | Novel basalt fiber composite cable protection pipeline production line host device | |
| CN114034314B (en) | Sixteen-pole automatic optical fiber gyroscope winding machine and control method thereof | |
| CN211138103U (en) | Filament winding former with be convenient for adjust rate of tension |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |