CN116002965B - Wire arranging die, device and method for preparing quartz image-transmitting optical fiber bundle - Google Patents
Wire arranging die, device and method for preparing quartz image-transmitting optical fiber bundle Download PDFInfo
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- CN116002965B CN116002965B CN202211557013.XA CN202211557013A CN116002965B CN 116002965 B CN116002965 B CN 116002965B CN 202211557013 A CN202211557013 A CN 202211557013A CN 116002965 B CN116002965 B CN 116002965B
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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
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- 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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Abstract
The invention belongs to the technical field of optical fibers, and discloses a wire arranging die, a device and a method for preparing a quartz image-transmitting optical fiber bundle. The first component and the second component in the wire arranging die are respectively connected with two waist edges of the bottom component, the first component and the second component are side plates with adjustable positions, and the first component and the second component are respectively adjusted to preset positions and then form a die with a regular hexagon cross section with the bottom component. The invention can improve the stacking efficiency of glass filaments and reduce the stacking difficulty, and by utilizing the filament arranging die and the filament arranging device provided by the invention, a plurality of glass filaments can be ensured to form hexagonal close arrangement, and further, the close-arrangement quartz image transmission optical fiber bundle can be prepared.
Description
Technical Field
The invention belongs to the technical field of optical fibers, and particularly relates to a wire arranging die, a device and a method for preparing a quartz image-transmitting optical fiber bundle.
Background
The image transmission optical fiber bundle has the advantages of small volume, light weight, electromagnetic interference resistance, flexible bending and the like, each optical fiber is just one pixel, information can be independently transmitted, and high-definition image transmission in a complex environment can be realized. The image transmission optical fiber bundle is formed by bundling thousands of single optical fibers, the preparation process generally adopts a Plasma Chemical Vapor Deposition (PCVD) method to prepare a quartz optical fiber preform, the preform is drawn into glass filaments with certain diameter, the glass filaments are cut into a plurality of equal-length glass filaments, the glass filaments after being cut are corroded, washed and dried, the glass filaments are placed into a quartz glass sleeve in a regular arrangement for stacking, the glass filaments are fused into solid glass rods and then are secondarily drawn into multifilament, the multifilament is stacked and fused into multifilament bundles, and the steps are circulated until the required number of image transmission optical fiber bundles are finally formed.
In order to make the limited clear aperture have higher resolution, that is, the more single fibers need to be arranged, the better, so that different arrangement modes can influence the final resolution of the image transmission optical fiber. In general, a close hexagonal arrangement enables the highest resolution of the image-transmitting fiber, and how to achieve a hexagonal close arrangement of tens of thousands of monofilaments becomes a key technical difficulty.
The prior art is generally based only on the natural formation of close packing of glass filaments under the force of gravity, but this method has the following problems: (1) When the glass fiber is piled up on the upper middle part of the glass sleeve, the piling difficulty in the glass sleeve is increased due to the limitation of the glass tube wall, and meanwhile, the piling efficiency is reduced; (2) The glass fiber easily slides relatively in the stacking process to destroy regular hexagon stacking; (3) Because the cross section of the glass sleeve is round, and the limit theoretical accumulation of the glass filaments is regular hexagon, a plurality of gaps exist at the contact place of the glass filaments and the wall of the glass sleeve, the glass filaments slide to two sides easily, and the tight accumulation difficulty is increased.
Disclosure of Invention
In view of the above problems in the prior art, the present invention provides a filament arranging mold, a filament arranging device, a filament arranging method, and a filament arranging method for preparing a quartz image-transmitting optical fiber bundle, which can improve the stacking efficiency of glass filaments, reduce the stacking difficulty, ensure that a plurality of glass filaments form hexagonal close arrangement, and prepare the quartz image-transmitting optical fiber bundle with close arrangement.
In a first aspect, the present invention provides a wire arranging die comprising: a base assembly, a first assembly, and a second assembly; the section of the bottom component is in an inverted trapezoid shape, and the first component and the second component are respectively connected with two waist edges of the bottom component; the first component and the second component are both side plates with adjustable positions; and after the first component and the second component are respectively regulated to preset positions, the first component and the second component and the bottom component form a die with a regular hexagon cross section.
Preferably, the first component and the second component are respectively connected with two waist edges of the bottom component through pulleys; the first component is used for sliding upwards at a preset speed along a first direction until the first component slides to a first preset position; the second assembly is configured to slide upward in a second direction at a predetermined speed until a second predetermined position is reached.
Preferably, the bottom assembly, the first assembly and the second assembly are used as a first die, the wire arranging die further comprises a second die which is used as a top assembly, and the second die and the first die are combined to form a die with a closed cross section of a regular hexagon.
Preferably, the bottom surface of the bottom component is provided with a limit groove, or the bottom surface and two side surfaces of the bottom component are provided with limit grooves; the limiting groove is composed of a plurality of semicircular structures, and the aperture size of each semicircular structure is matched with the diameter of the glass fiber.
Preferably, the depth of the filament arrangement mold is smaller than the length of the glass filaments.
In a second aspect, the present invention provides a wire arranging device comprising: the wire arranging die comprises a first limiting module, a second limiting module, a quartz glass sleeve and the wire arranging die;
The first limiting module is used for enabling first end faces of a plurality of stacked glass filaments to be in the same plane and pushing the glass filaments fixed by the filament arranging die into the quartz glass sleeve from the first end side of the quartz glass sleeve under the action of thrust;
The second limiting module comprises a base and an edge component arranged on the base, wherein the edge component is used for being embedded from the second end side of the quartz glass sleeve, the cross section of the edge component is complementary with the cross section of the wire arranging die to form a circle, and the size of the circle is consistent with the inner diameter of the quartz glass sleeve.
Preferably, different marks corresponding to different types of glass filaments are arranged on the first limiting module.
Preferably, the length of the quartz glass sleeve is consistent with the length of the glass filaments.
In a third aspect, the present invention provides a filament arranging method, implemented by using the filament arranging device, where the filament arranging method includes:
Sequentially placing glass fibers from an opening of a fiber arranging die, and arranging the glass fibers layer by layer upwards from the bottom surface of the bottom assembly; when stacking is carried out on the lower half area of the wire arranging die, the first assembly and the second assembly are adjusted to be positioned on the outer side of the bottom assembly, so that the bottom assembly is in a completely opened state, and glass wires are stacked in the bottom assembly; after the bottom assembly is fully stacked by glass filaments, the first assembly and the second assembly move upwards at a preset speed, and glass filaments are arranged at the same time until the stacking of the upper half area of the filament arranging die is completed; in the process of stacking glass fibers, a first limiting module is arranged on the outer side of a first end face of the glass fibers, so that the first end faces of a plurality of stacked glass fibers are positioned on the same plane;
Embedding an edge component of the second limit module from the second end side of the quartz glass sleeve after stacking is completed; applying thrust to the first limiting module, pushing glass filaments fixed by the filament arrangement die into the quartz glass sleeve from the first end side of the quartz glass sleeve until second end surfaces of a plurality of piled glass filaments are contacted with a base of the second limiting module;
Filling a quartz rod in a gap between the glass fiber and the quartz glass sleeve until the quartz glass sleeve is filled; and removing the second limiting module, and completely pushing the quartz rod in so that the quartz rod and the second end face of the glass fiber are positioned on the same plane.
In a fourth aspect, the present invention provides a method of preparing a silica-based image-transmitting optical fiber bundle, comprising the steps of:
Step 1, preparing a prefabricated rod;
step 2: drawing the preform rod to form glass fiber;
Step 3, cutting the glass filaments to obtain a plurality of glass filaments with preset lengths;
step 4, stacking glass filaments by adopting the filament arranging method to obtain a filled quartz glass sleeve;
step 5, carrying out high-temperature fusion shrinkage on the quartz glass sleeve to obtain a solid preform;
And 6, repeating the steps 2-5 until the quartz image transmission optical fiber bundle with the required core number is obtained.
One or more technical schemes provided by the invention have at least the following technical effects or advantages:
(1) The wire arranging die comprises the bottom component, the first component and the second component, and the first component and the second component are both side plates with adjustable positions, so that the first component and the second component can be adjusted to be positioned at the outer sides of the bottom component when stacking the lower half area of the wire arranging die, the bottom component is in a completely opened state, and when glass wires are stacked in the bottom component, the stacking of glass rods can be completed more quickly compared with the prior art. After the bottom assembly is filled with the accumulation of glass filaments, the first and second assemblies can be gradually adjusted in position (e.g., moved upward at a predetermined rate) while the glass filaments are aligned until the accumulation of the upper half of the filament arranging mold is completed. And after the first component and the second component are respectively adjusted to preset positions, the first component and the second component and the bottom component form a die with a regular hexagon cross section, so that hexagonal close arrangement can be realized. The wire arranging die provided by the invention can avoid the problems of increased stacking difficulty and reduced stacking efficiency caused by the limitation of glass tube walls and the like in the prior art, can improve the stacking efficiency of glass wires, reduce the stacking difficulty and can ensure that a plurality of glass wires form hexagonal close arrangement.
(2) According to the invention, the second die serving as the top component is added, so that the second die and the first die (formed by the bottom component, the first component and the second component) are combined to form the die with the closed cross section of the regular hexagon, the hexagonal close arrangement can be further ensured, and the operation difficulty in the subsequent preparation of the quartz image transmission optical fiber bundle can be reduced.
(3) According to the invention, the limiting grooves are formed in the bottom surface of the bottom assembly, and more preferably, the limiting grooves are formed in the bottom surface and the two side surfaces of the bottom assembly, and the limiting grooves are formed by a plurality of semicircular structures, so that the aperture size of each semicircular structure is matched with the diameter of the glass filaments, and the relative sliding of the glass filaments in the stacking process can be avoided based on the arrangement of the limiting grooves, the effective limiting of the glass filaments in the stacking process is ensured, the stacking stability is improved, and the glass filaments are stacked more tightly and orderly.
(4) The depth of the filament arranging die is smaller than the length of the glass filaments, so that two ends of the glass filaments can be exposed during stacking, and the glass filaments can be conveniently placed into the quartz glass sleeve later.
(5) The invention can well ensure the perpendicularity of the end face of the glass fiber by utilizing the first limit module in the fiber arranging device, and effectively improve the quality of the optical fiber transmission image. The cross section of the edge component in the second limiting module in the wire arrangement device and the cross section of the wire arrangement die are complementary to form a circle, and the size of the circle is consistent with the inner diameter of the quartz glass sleeve, so that the center of the stacked regular hexagonal glass wires is enabled to coincide with the center of the quartz glass sleeve, in addition, the glass wires can be prevented from sliding to the space between the regular hexagonal glass wires and the round quartz glass sleeve, the tight stacking difficulty can be reduced, and the quartz glass rod is convenient to fill.
(6) According to the invention, different marks corresponding to different types of glass filaments are arranged on the first limiting module, and the mark can be used as a stacking reference when different types of glass filaments (for example, glass filaments with different sizes, different numerical apertures, different core-to-sheath ratios or different doping concentrations) are stacked in the same sleeve for realizing the specific function of an image transmission beam, so that the required glass filaments can be stacked conveniently and efficiently.
(7) By utilizing the wire arranging die and the wire arranging device, the wire arranging method provided by the invention can ensure that a plurality of glass wires form hexagonal close arrangement, and the method for preparing the quartz image transmission optical fiber bundle can prepare the quartz image transmission optical fiber bundle with close arrangement.
Drawings
Fig. 1 is a schematic state diagram of a filament arranging die in each stage corresponding to a filament arranging method provided in embodiment 3 of the present invention; wherein (a) in fig. 1 shows that, when stacking is performed in the lower half of the wire arranging die, both the first component and the second component are located outside the bottom component, and the bottom component is in a completely opened state; in fig. 1, (b) shows that after the accumulation of the upper half area of the wire arranging die is completed, the first component and the second component are moved to the preset positions, and the second die is moved to be combined with the first die, so that a die with a closed section in a regular hexagon shape is enclosed; fig. 1 (c) shows a closed mold with a regular hexagonal cross section, which is filled with glass filaments;
fig. 2 is a schematic diagram of a process of pushing glass filaments into a quartz glass sleeve in a filament arrangement method according to embodiment 3 of the present invention;
FIG. 3 is a process flow diagram of a method for preparing a quartz image-transmitting optical fiber bundle according to embodiment 4 of the present invention;
Fig. 4 is a schematic diagram of a glass fiber filled quartz glass sleeve after a single drawing and stacking in a method for preparing a quartz image transmission optical fiber bundle according to embodiment 4 of the present invention.
Detailed Description
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1:
Embodiment 1 provides a wire arranging die, comprising: a base assembly, a first assembly, and a second assembly; the section of the bottom component is in an inverted trapezoid shape, and the first component and the second component are respectively connected with two waist edges of the bottom component; the first component and the second component are both side plates with adjustable positions; and after the first component and the second component are respectively regulated to preset positions, the first component and the second component and the bottom component form a die with a regular hexagon cross section.
The first component and the second component are respectively connected with two waist edges of the bottom component through pulleys; the first component is used for sliding upwards at a preset speed along a first direction until the first component slides to a first preset position; the second assembly is configured to slide upward in a second direction at a predetermined speed until a second predetermined position is reached. The first component and the second component can slide up and down based on the regular hexagonal frame, and the preset position is the position corresponding to the highest slidable point of the components.
The inner side length of the filament arrangement die (namely the regular hexagon die) is a multiple of the diameter of the glass filaments. The preparation material of arranging silk mould can be thinner aluminum plate, steel sheet or special fluorine dragon material, and the surface is through polishing treatment, can avoid causing the fish tail to glass silk surface.
The bottom surface of bottom subassembly is provided with the spacing groove, perhaps bottom surface and both sides face of bottom subassembly all are provided with the spacing groove. The limiting groove is composed of a plurality of semicircular structures, and the aperture size of each semicircular structure is matched with the diameter of the glass fiber. When glass filaments are piled up, the glass filaments at the bottom, the top and the side surfaces can be fixed based on the limiting grooves, so that sliding is prevented. Specifically, when the glass fiber is piled up, the glass fiber can be completely embedded into a semicircle on the inner edge at the place contacted with the edge of the die, so that the limit of the glass fiber is realized; when the glass filaments are piled up in the middle of the trapezoid, the tight hexagonal pile can be automatically formed by means of the dead weight of the glass filaments.
The depth of the filament arranging die is smaller than the length of the glass filaments, so that two ends of the glass filaments can be exposed during stacking, and the glass filaments can be placed into the quartz glass sleeve conveniently.
In a preferred scheme, the bottom assembly, the first assembly and the second assembly are used as a first die, the wire arranging die further comprises a second die which is used as a top assembly, and the second die and the first die are combined to form a die with a closed cross section of a regular hexagon.
In particular, the bottom assembly may be secured together by welding with three sub-templates, and the second mold may be freely installed or uninstalled as desired.
Example 2:
Embodiment 2 provides a wire arranging device comprising: a first limit module, a second limit module, a quartz glass sleeve, and a wire-arranging die as described in example 1.
The first limiting module is used for enabling first end faces of a plurality of stacked glass filaments to be located on the same plane and pushing the glass filaments fixed by the filament arrangement die into the quartz glass sleeve from the first end side of the quartz glass sleeve under the action of thrust.
The second limiting module comprises a base and an edge component arranged on the base, wherein the edge component is used for being embedded from the second end side of the quartz glass sleeve, the cross section of the edge component is complementary with the cross section of the wire arranging die to form a circle, and the size of the circle is consistent with the inner diameter of the quartz glass sleeve.
For example, the second limiting module is composed of a rectangular base and six sub-modules with the same size, and the six sub-modules with the same size form the edge assembly, and are complemented with the regular hexagon die to form a circle.
In addition, different marks corresponding to different types of glass filaments can be arranged on the first limiting module.
The length of the quartz glass sleeve is consistent with the length of the glass filaments and is 100-1500mm, so that the glass filaments can be just completely embedded into the quartz glass sleeve. The inner diameter of the quartz glass tube is 10-100mm, and the wall thickness is 1-10mm.
Example 3:
Embodiment 3 provides a filament arranging method implemented by using the filament arranging device described in embodiment 2, referring to fig. 1 and fig. 2, the filament arranging method includes:
(1) The glass filaments are sequentially put into the filament arranging mould 1 from the opening, and are arranged layer by layer upwards from the bottom surface of the bottom component. Referring to fig. 1 (a), when the lower half of the wire arranging die 1 is stacked, the first and second members are adjusted to be positioned outside the bottom member so that the bottom member is in a completely opened state, and glass wires are stacked in the bottom member.
(2) After the bottom assembly is filled with the glass fiber stack, the first assembly and the second assembly move upwards at a preset speed, and meanwhile, glass fibers are arranged until the stack of the upper half area of the wire arranging die 1 is completed. In the process of stacking glass filaments, the first limiting module 2 is arranged on the outer side of the first end face of the glass filaments, so that the first end faces of a plurality of stacked glass filaments are positioned on the same plane.
That is, after the stacking of the lower area is completed, the glass fiber stacking of the upper area is started, and at this time, the upper mold (including the first assembly and the second assembly) can move upwards along the slide rails connected with the two molds at a certain speed, so that the glass fiber is always in the range of the mold when stacking is ensured until the stacking of the upper area is completed. In addition, after stacking, the second die can be used for sealing the first die, so that the whole hexagonal die forms a sealing state. At this time, the cross section of the glass fiber after being piled up is a regular hexagon. Specifically, referring to fig. 1 (b), after stacking of the upper half of the wire arranging die is completed, the first component and the second component have been moved to a preset position, and the second die is moved to be combined with the first die, so as to enclose a die with a closed section in a regular hexagon shape. Fig. 1 (c) shows that glass filaments are packed in a closed mold having a regular hexagonal cross section.
For example, when the glass filaments fill the lower region, the first and second assemblies slide upward at a slow speed of 3mm/min until they stop after they are not able to slide. Synchronously, the glass filaments form regular hexagonal stacks by gravity in the upper region, and the glass filaments do not need to be fixed by a die limiting mode because the stacks of the upper half parts are narrowed by width.
(3) After the stacking is completed, embedding an edge component of the second limiting module 3 from the second end side of the quartz glass sleeve 4; the first limiting module 2 is pushed with pushing force, and the glass filaments 5 fixed by the filament arrangement die 1 are pushed into the quartz glass sleeve 4 from the first end side of the quartz glass sleeve 4 until the second end surfaces of the stacked glass filaments 5 are contacted with the base of the second limiting module 3, see fig. 2. Furthermore, the wire-discharge die 1 may be released before the glass filaments 5 are pushed to the bottom of the quartz glass sleeve 4.
(4) Filling a quartz rod in a gap between the glass fiber 5 and the quartz glass sleeve 4 until the quartz glass sleeve 4 is filled; and removing the second limiting module 3, and completely pushing in the quartz rod to enable the quartz rod and the second end face of the glass fiber 5 to be in the same plane.
The quartz rod can be pure quartz (not used as a pixel) or glass fiber with smaller diameter (used as a pixel). In particular, a variety of different sized quartz rods may be used for filling.
After the above process is completed, the first limiting module 2 and the wire arranging die 1 are removed.
The filament arrangement method provided in embodiment 3 can be automatically completed without manual operation. For example, glass filaments are placed into a regular hexagon die through an automatic grabbing device, and are limited through the first limiting module on one side of the die, so that the perpendicularity of the end faces of the glass filaments in the stacking process is guaranteed. The automatic grabbing device is achieved by adopting existing automatic equipment.
Example 4:
Example 4 provides a method of making a silica-faced optical fiber bundle, see fig. 3, consisting essentially of the steps of:
and step 1, preparing a prefabricated rod.
For example, PCVD is used to prepare high Numerical Aperture (NA) preforms having diameters of 15-80mm and NA of 0.3-0.6.
Step 2: and drawing the preform rod to form the glass fiber.
For example, the glass filaments have a diameter of 0.2-5mm.
And step 3, cutting the glass filaments to obtain a plurality of glass filaments with preset lengths.
For example, the cut glass filaments have a length of 100-1500mm, and the glass filaments are etched, washed and dried.
And 4, stacking glass filaments by adopting the filament arranging method described in the embodiment 3 to obtain a filled quartz glass sleeve, and referring to fig. 4.
And 5, carrying out high-temperature fusion shrinkage on the quartz glass sleeve to obtain a solid preform.
And 6, repeating the steps 2-5 until the quartz image transmission optical fiber bundle with the required core number is obtained.
In conclusion, the glass fiber stacking machine can efficiently and rapidly complete stacking of glass fibers, can realize automation and improves production efficiency; meanwhile, the perpendicularity of the end face of the glass fiber can be well guaranteed, the quality of the optical fiber transmission image is effectively improved, and the device is simple in process, low in cost and good in product consistency. The invention can realize the tight stacking and ordered arrangement of the monofilament optical fibers, and finally the monofilament optical fibers are drawn into the image transmission optical fibers with tight hexagonal arrangement, so that the image transmission optical fiber bundles have higher resolution in limited clear apertures.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all such modifications and equivalents are intended to be encompassed in the scope of the claims of the present invention.
Claims (9)
1. A wire arranging die, comprising: a base assembly, a first assembly, and a second assembly; the section of the bottom component is in an inverted trapezoid shape, and the first component and the second component are respectively connected with two waist edges of the bottom component through pulleys; the first component and the second component are both side plates with adjustable positions; the first component is used for sliding upwards at a preset speed along a first direction until the first component slides to a first preset position; the second component is used for sliding upwards at a preset speed along a second direction until the second component slides to a second preset position; and after the first component and the second component are respectively regulated to preset positions, the first component and the second component and the bottom component form a die with a regular hexagon cross section.
2. The wire arranging die of claim 1, wherein the bottom assembly, the first assembly and the second assembly are used as a first die, and the wire arranging die further comprises a second die used as a top assembly, wherein the second die and the first die are combined to form a die with a closed cross section of a regular hexagon.
3. The wire arranging die of claim 1, wherein the bottom surface of the bottom assembly is provided with a limit groove, or both the bottom surface and both sides of the bottom assembly are provided with limit grooves; the limiting groove is composed of a plurality of semicircular structures, and the aperture size of each semicircular structure is matched with the diameter of the glass fiber.
4. The wire-discharge die of claim 1, wherein the wire-discharge die has a depth less than a length of the glass strands.
5. A wire arranging device, characterized by comprising: a first limit module, a second limit module, a quartz glass sleeve, and a wire-arranging die according to any of claims 1-4;
The first limiting module is used for enabling first end faces of a plurality of stacked glass filaments to be in the same plane and pushing the glass filaments fixed by the filament arranging die into the quartz glass sleeve from the first end side of the quartz glass sleeve under the action of thrust;
The second limiting module comprises a base and an edge component arranged on the base, wherein the edge component is used for being embedded from the second end side of the quartz glass sleeve, the cross section of the edge component is complementary with the cross section of the wire arranging die to form a circle, and the size of the circle is consistent with the inner diameter of the quartz glass sleeve.
6. The wire arranging device of claim 5, wherein different marks corresponding to different types of glass wires are arranged on the first limiting module.
7. The filament arrangement according to claim 5, wherein the length of the quartz glass sleeve corresponds to the length of the glass filaments.
8. A wire arranging method, characterized in that the wire arranging device is adopted, and the wire arranging method comprises the following steps:
Sequentially placing glass fibers from an opening of a fiber arranging die, and arranging the glass fibers layer by layer upwards from the bottom surface of the bottom assembly; when stacking is carried out on the lower half area of the wire arranging die, the first assembly and the second assembly are adjusted to be positioned on the outer side of the bottom assembly, so that the bottom assembly is in a completely opened state, and glass wires are stacked in the bottom assembly; after the bottom assembly is fully stacked by glass filaments, the first assembly and the second assembly move upwards at a preset speed, and glass filaments are arranged at the same time until the stacking of the upper half area of the filament arranging die is completed; in the process of stacking glass fibers, a first limiting module is arranged on the outer side of a first end face of the glass fibers, so that the first end faces of a plurality of stacked glass fibers are positioned on the same plane;
Embedding an edge component of the second limit module from the second end side of the quartz glass sleeve after stacking is completed; applying thrust to the first limiting module, pushing glass filaments fixed by the filament arrangement die into the quartz glass sleeve from the first end side of the quartz glass sleeve until second end surfaces of a plurality of piled glass filaments are contacted with a base of the second limiting module;
Filling a quartz rod in a gap between the glass fiber and the quartz glass sleeve until the quartz glass sleeve is filled; and removing the second limiting module, and completely pushing the quartz rod in so that the quartz rod and the second end face of the glass fiber are positioned on the same plane.
9. A method of making a silica-faced optical fiber bundle comprising the steps of:
Step 1, preparing a prefabricated rod;
step 2: drawing the preform rod to form glass fiber;
Step 3, cutting the glass filaments to obtain a plurality of glass filaments with preset lengths;
Step 4, stacking glass filaments by adopting the filament arranging method as defined in claim 8 to obtain a filled quartz glass sleeve;
step 5, carrying out high-temperature fusion shrinkage on the quartz glass sleeve to obtain a solid preform;
And 6, repeating the steps 2-5 until the quartz image transmission optical fiber bundle with the required core number is obtained.
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| CN204479791U (en) * | 2015-01-22 | 2015-07-15 | 中国建筑材料科学研究总院 | Excellent mould arranged by optical fiber |
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