CN113955937B - Chemically strengthened optical fiber panel and preparation method thereof - Google Patents
Chemically strengthened optical fiber panel and preparation method thereof Download PDFInfo
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- CN113955937B CN113955937B CN202111421505.1A CN202111421505A CN113955937B CN 113955937 B CN113955937 B CN 113955937B CN 202111421505 A CN202111421505 A CN 202111421505A CN 113955937 B CN113955937 B CN 113955937B
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- aluminum silicon
- silicon core
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 122
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000011521 glass Substances 0.000 claims abstract description 93
- -1 lithium aluminum silicon core Chemical group 0.000 claims abstract description 49
- 239000000835 fiber Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000006059 cover glass Substances 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000005342 ion exchange Methods 0.000 claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 13
- 230000008018 melting Effects 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000003365 glass fiber Substances 0.000 claims abstract description 5
- 238000012681 fiber drawing Methods 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 6
- 238000005253 cladding Methods 0.000 claims description 5
- 230000009477 glass transition Effects 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 239000005388 borosilicate glass Substances 0.000 claims description 3
- 238000003426 chemical strengthening reaction Methods 0.000 claims description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims 4
- JFBZPFYRPYOZCQ-UHFFFAOYSA-N [Li].[Al] Chemical compound [Li].[Al] JFBZPFYRPYOZCQ-UHFFFAOYSA-N 0.000 claims 3
- 229910052710 silicon Inorganic materials 0.000 claims 3
- 239000010703 silicon Substances 0.000 claims 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 235000010333 potassium nitrate Nutrition 0.000 claims 2
- 235000010344 sodium nitrate Nutrition 0.000 claims 2
- FUJCRWPEOMXPAD-UHFFFAOYSA-N Li2O Inorganic materials [Li+].[Li+].[O-2] FUJCRWPEOMXPAD-UHFFFAOYSA-N 0.000 claims 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 229910052681 coesite Inorganic materials 0.000 claims 1
- 229910052593 corundum Inorganic materials 0.000 claims 1
- 229910052906 cristobalite Inorganic materials 0.000 claims 1
- XUCJHNOBJLKZNU-UHFFFAOYSA-M dilithium;hydroxide Chemical compound [Li+].[Li+].[OH-] XUCJHNOBJLKZNU-UHFFFAOYSA-M 0.000 claims 1
- 238000005516 engineering process Methods 0.000 claims 1
- 230000004927 fusion Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 229910052682 stishovite Inorganic materials 0.000 claims 1
- 229910052905 tridymite Inorganic materials 0.000 claims 1
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 abstract description 4
- 229910018068 Li 2 O Inorganic materials 0.000 abstract description 4
- 229910052708 sodium Inorganic materials 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000005354 aluminosilicate glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
- C03B37/14—Re-forming fibres or filaments, i.e. changing their shape
- C03B37/15—Re-forming fibres or filaments, i.e. changing their shape with heat application, e.g. for making optical fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/10—Non-chemical treatment
- C03B37/16—Cutting or severing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
- C03C13/046—Multicomponent glass compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- 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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
- G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images
- G02B6/08—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images with fibre bundle in form of plate
Abstract
The invention relates to a chemically strengthened optical fiber panel and a preparation method thereof, belonging to the field of optical fiber panel manufacture. The technical scheme adopted by the invention is as follows: the chemically-reinforced optical fiber panel is formed by regularly two-dimensionally arranging and fusing optical fibers with the fiber diameter of 4-10 micrometers, wherein the optical fibers comprise lithium aluminum silicon core glass and optical fiber cover glass, the optical fiber cover glass wraps the lithium aluminum silicon core glass, and the lithium aluminum silicon core glass comprises the following components: siO (SiO) 2 ，Al 2 O 3 ，Li 2 O，Na 2 O，K 2 O，B 2 O 3 . The lithium aluminum silicon glass with components is suitable for preparing the optical fiber panel, solves the problem that the single filament drawing, multifilament drawing, vacuum melting and pressing and other technological processes cannot be formed when the lithium aluminum silicon glass is matched with the materials of the optical fiber skin, and finally obtains the optical fiber panel with high mechanical impact resistance by slicing, flat grinding and polishing and then immersing in molten salt for ion exchange. The prepared optical fiber panel has high resolution and high contrast.
Description
Technical Field
The invention relates to a chemically strengthened optical fiber panel and a preparation method thereof, belonging to the field of optical fiber panel manufacture.
Background
The optical fiber panel is formed by regularly two-dimensionally arranging and fusing tens of thousands of optical fibers with the fiber diameter of 4-10 microns, the optical fibers are used as a basic image transmission unit of the optical fiber panel, and the optical fiber panel is formed by high-temperature wire drawing of optical fiber sheath glass with low refractive index and core glass with high refractive index, has excellent properties of high resolution, high contrast, optical zero thickness and the like, and is widely applied to the fields of military, medical treatment, image recognition and the like.
However, due to the structural problem of the optical fiber panel, the optical fiber panel has low impact strength, the application range of the optical fiber panel is not limited by the low impact strength, and particularly when the optical fiber panel is applied to the environments such as imaging lens, appearance equipment and the like, certain impact resistance is required to resist damage when falling.
The temperature difference between the material property interval and the fiber cover glass of the common lithium aluminum silicon glass is large, and the common lithium aluminum silicon glass cannot be molded in the preparation process.
Disclosure of Invention
The invention provides a chemically strengthened optical fiber panel and a preparation method thereof, wherein the chemically strengthened lithium aluminum silicon glass has material section temperature and expansion coefficient matched with those of optical fiber cladding glass through component proportion, the technical difficulties of molding in processes such as single filament drawing, multifilament drawing, vacuum melting and pressing are solved, and the optical fiber panel with high resistance to mechanical impact performance is finally obtained through ion exchange after slicing, flat grinding and polishing and immersing in molten salt.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the optical fiber panel capable of being chemically strengthened is formed by regularly two-dimensionally arranging and fusing optical fibers with the fiber diameter of 4-10 micrometers, wherein the optical fibers comprise lithium aluminum silicon core glass and optical fiber cover glass, the optical fiber cover glass wraps the lithium aluminum silicon core glass, and the lithium aluminum silicon core glass comprises the following components: siO (SiO) 2 The content is 65-75wt%; al (Al) 2 O 3 The content is 12-20wt%; li (Li) 2 O, the content is 2-5wt%; na (Na) 2 O, the content is 1-5wt%; k (K) 2 O, the content is 1-5wt%; b (B) 2 O 3 The content is 0.5-2 wt%.
Preferably, the optical fiber cover glass is a high lead borosilicate glass.
Preferably, the lithium aluminum silicon core glass (Na 2 O+ Li 2 O）/ （SiO 2 +Al 2 O 3 ) Mass ratio of (2)0.15-0.20, and the aluminosilicate glass has better mechanical shock resistance after being chemically strengthened.
Preferably, the average expansion coefficient of the lithium aluminum silicon core glass at 25-300 ℃ is 85-95 x 10 -7 And (3) the temperature is higher than that of the fiber cover glass.
Preferably, the glass transition temperature Tg of the lithium aluminum silicon core is 580-600 ℃, the softening point Tf is 640-660 ℃, and the glass transition temperature Tf is larger than that of the optical fiber sheath glass.
The preparation method of the chemically strengthened optical fiber panel comprises the steps of preparing two glass materials, namely lithium aluminum silicon core glass and optical fiber cladding glass, combining rod tubes, drawing monofilaments, arranging primary rods, drawing multifilament, arranging plates, carrying out vacuum melting and pressing to obtain blank plate sections of the optical fiber panel, and then slicing, shaping, grinding, polishing and immersing in molten salt for ion exchange to obtain the strengthened optical fiber panel.
As a further preferred method for producing a chemically-hardenable fiber optic panel, the following steps are specifically mentioned:
(1) Adopting cold processing equipment to process the lithium aluminum silicon core glass and the optical fiber cover glass respectively, so that the outer diameter of the lithium aluminum silicon core glass rod reaches phi 29.5-30.5 mm, the outer diameter of the optical fiber cover glass reaches phi 33.5-35.5 mm, and the wall thickness is 2.0-2.5 mm;
(2) Putting lithium aluminum silicon core glass into an optical fiber skin glass tube, combining the optical fiber skin glass tube and a lithium aluminum silicon core glass rod to form a glass rod tube, and drawing the glass rod tube into monofilaments with the outer diameter of 3.0-3.5 mm plus or minus 0.01mm and the length of 600-840 mm by using an optical fiber drawing machine;
(3) Arranging m glass monofilaments into primary rods in a rod arranging die, binding and fixing the primary rods after rod arrangement by using a raw material belt and an aluminum foil to form a whole;
(4) Drawing the primary rod into an optical fiber multifilament with the opposite side length of 1.1-1.5 mm plus or minus 0.01mm by adopting an optical fiber drawing machine, and then cutting the optical fiber multifilament into a plurality of sections of multifilament with a certain length;
(5) Taking a plurality of multifilament yarns, discharging a hexagonal fiber array plate with the number of opposite sides of 15-20 in a regular hexagonal plate arranging die, and binding and fixing two ends;
(6) Placing the arranged fiber array plates into a special die, and placing the special die into a vacuum furnace for vacuum melting and pressing, wherein the melting and pressing temperature is 610-630 ℃;
(7) Performing processes such as slicing, shaping, grinding, polishing and the like on the blank plate section of the hexagonal optical fiber panel formed by vacuum melt pressing to obtain an optical fiber panel blank plate with a smooth surface and a consistent shape;
(8) Immersing an optical fiber face plate blank into NaNO 3 And KNO 3 Ion exchange is carried out in molten salt, so that the fiber panel with high strength is prepared.
(9) As a further preferable method for preparing the chemically strengthened optical fiber panel, the two glass materials of the lithium aluminum silicon core glass and the optical fiber sheath glass have mutually matched material interval temperature and expansion coefficient, and meet the technological preparation processes of monofilaments, multifilaments, melt pressure and the like.
As a further preferable mode of the preparation method of the chemically strengthened optical fiber panel, the outer diameter and the wall thickness of the optical fiber sheath glass tube, the diameter of the lithium aluminum silicon core glass rod, the diameter of the monofilament and the opposite sides of the multifilament are obtained by the preparation requirement of the optical fiber panel, and the preparation method can be changed according to the requirement.
As a further preference of the method for producing a chemically-hardenable fiber optic panel, the molten salt is 15% NaNO 3 And 85% KNO 3 The temperature of the ion exchange is about 460 c and the time of the ion exchange is 300min.
Compared with the prior art, the invention has the following beneficial effects: aiming at the problem of low strength of the optical fiber panel, the component lithium aluminum silicon glass is suitable for preparing the optical fiber panel, solves the problem that the fiber cannot be formed in the technical processes of single filament drawing, multifilament drawing, vacuum melt pressing and the like when the lithium aluminum silicon glass is matched with the materials of the optical fiber skin, and finally obtains the optical fiber panel with high mechanical impact resistance by slicing, flat grinding and polishing and then immersing in molten salt for ion exchange. Provides a good and effective solution for manufacturing the optical fiber panel with high impact strength. The prepared optical fiber panel has high resolution and high contrast.
Detailed Description
In order to more effectively describe the technical means and effects adopted by the present invention to achieve the intended purpose, the present invention is described below with reference to specific embodiments. The particular features of the embodiments described below may be combined in any suitable manner.
The optical fiber panel is formed by regularly two-dimensionally arranging and fusing tens of millions of optical fibers with the diameter of 4-10 micrometers.
The optical fiber comprises lithium aluminum silicon core glass and optical fiber cover glass, wherein the optical fiber cover glass wraps the lithium aluminum silicon core glass, and the lithium aluminum silicon core glass comprises the following components: siO (SiO) 2 The content is 65-75wt%; al (Al) 2 O 3 The content is 12-20wt%; li (Li) 2 O, the content is 2-5wt%; na (Na) 2 O, the content is 1-5wt%; k (K) 2 O, the content is 1-5wt%; b (B) 2 O 3 The content is 0.5-2 wt%. In the lithium aluminum silicon core glass (Na 2 O+ Li 2 O）/ （SiO 2 +Al 2 O 3 ) The mass ratio of (2) is 0.15-0.20. The aluminosilicate glass has better mechanical impact resistance after chemical strengthening, so that the optical fiber panel meets the requirement of high-resistance mechanical impact resistance.
The average expansion coefficient of the lithium aluminum silicon core glass at 25-300 ℃ is 85-95 x 10 -7 And (3) the temperature is higher than that of the fiber cover glass. The glass transition temperature Tg of the lithium aluminum silicon core is 580-600 ℃, the softening point temperature Tf is 640-660 ℃, and the glass transition temperature Tf is larger than that of the optical fiber sheath glass.
The optical fiber cladding glass is borosilicate glass with high lead content.
The invention can chemically strengthen the raw materials of the optical fiber panel to be two glass materials of lithium aluminum silicon core glass and optical core skin glass, the blank plate section of the optical fiber panel is obtained through rod tube combination, single filament drawing, primary rod arrangement, multifilament drawing, plate arrangement and vacuum melt pressing, and then the reinforced optical fiber panel is obtained through slicing, shaping, grinding, polishing and ion exchange after immersing in molten salt, and the method comprises the following specific preparation steps:
(1) Adopting cold processing equipment to process lithium aluminum silicon core glass and optical core skin glass respectively, wherein the lithium aluminum silicon core glass is light-made glass, the optical fiber skin glass is light-absorbing glass, the outer diameter of the lithium aluminum silicon core glass rod reaches phi 29.5-30.5 mm, and the outer diameter of the optical fiber skin glass reaches phi 35.5-36.5 mm, and the wall thickness is 3.0mm;
(2) Inserting a lithium aluminum silicon core glass rod into an optical core skin glass tube, combining to form a glass rod tube, and drawing the glass rod tube into a monofilament with the outer diameter of 3.0-3.5 mm plus or minus 0.01mm by using an optical fiber drawing machine, wherein the length of the monofilament is 600-840 mm;
(3) Arranging m glass monofilaments into primary rods in a rod arranging die, binding and fixing the primary rods after rod arrangement by using a raw material belt and an aluminum foil to form a whole;
(4) Drawing the primary rod into an optical fiber multifilament with the opposite side length of 1.1-1.5 mm plus or minus 0.01mm by adopting an optical fiber drawing machine, and then cutting the optical fiber multifilament into a plurality of sections of multifilament with a certain length;
(5) Taking a plurality of multifilament yarns, discharging a hexagonal fiber array plate with the number of opposite sides of 15-20 in a regular hexagonal plate arranging die, and binding and fixing two ends;
(6) Placing the arranged fiber array plates into a special die and placing the special die into a vacuum furnace for vacuum melting and pressing, wherein the melting and pressing temperature is 610-630 ℃;
(7) Performing processes such as slicing, shaping, grinding, polishing and the like on the blank plate section of the hexagonal optical fiber panel formed by vacuum melt pressing to obtain an optical fiber panel blank plate with a smooth surface and a consistent shape;
(8) And carrying out ion exchange on the optical fiber panel blank plate to obtain the reinforced optical fiber panel.
The preferred scheme in the embodiment of the invention is as follows: in order to improve the product performance, the gap between glass rod tubes is required to be smaller than 0.5mm, the single filament drawing precision and the multifilament drawing precision are controlled within 5 mu m, the melting pressure temperature is 610-630 ℃, the slice thickness is 2-10 mm, the parallelism is within 5 mu m, the flatness is within 0.5 mu m, and the micropore size and the hole spacing precision of the prepared optical fiber panel are within 1 mu m. The specific detailed steps are as follows:
(1) Adopting cold processing equipment to process the light absorbing glass and the light supporting glass respectively, so that the outer diameter of the light supporting glass rod reaches phi 29.5-30.5 mm, the outer diameter of the light absorbing glass reaches phi 35.5-39.5 mm, the wall thickness is 3.0-4.5 mm, and the gap between the glass rod and the pipe is less than 0.5mm;
(2) Combining a light absorption glass tube and a light support glass rod to form a glass rod tube, drawing the glass rod tube into a single filament with the outer diameter of 3.0-3.5 mm plus or minus 0.01mm by using an optical fiber drawing machine, wherein the length of the single filament is 600-840 mm, and the drawing precision of the single filament is controlled within 5 mu m;
(3) Arranging m glass monofilaments into primary rods in a rod arranging die, binding and fixing the primary rods after rod arrangement by using a raw material belt and an aluminum foil to form a whole;
(4) Drawing the primary rod into an optical fiber multifilament with the opposite side length of 1.1-1.5 mm plus or minus 0.01mm by adopting an optical fiber drawing machine, and then cutting the optical fiber multifilament into a plurality of multifilament with a certain length, wherein the drawing precision of the multifilament is controlled within 5 mu m;
(5) Taking a plurality of multifilament yarns, discharging a hexagonal fiber array plate with the number of opposite sides of 15-20 in a regular hexagonal plate arranging die, and binding and fixing two ends;
(6) Placing the arranged fiber array plates into a special die, and placing the special die into a vacuum furnace for vacuum melting and pressing, wherein the melting and pressing temperature is 610-630 ℃;
(7) Performing processes such as slicing, shaping, grinding, polishing and the like on the blank plate section of the hexagonal optical fiber panel formed by vacuum melt pressing to obtain an optical fiber panel blank plate with a smooth surface and a consistent shape, wherein the polishing parallelism is within 5 mu m, and the flatness is within 0.5 mu m;
(8) And carrying out ion exchange on the optical fiber panel blank plate to obtain the reinforced optical fiber panel.
Molten salt including NaNO 3 And KNO 3 In the ion exchange, the ratio of the exchange rate of Li+ of the lithium aluminum silicon glass to Na+ of the molten salt to the exchange rate of Na+ of the lithium aluminum silicon glass to K+ of the molten salt is 4.5-6.0. The molten salt comprises 15% of NaNO by mass percent 3 And 85% KNO 3 The temperature of the ion exchange is 460 ℃; and the ion exchange time is 300min, and finally the reinforced optical fiber panel is obtained.
The chemically strengthened optical fiber panel blank comprises lithium aluminum silicon glassThe glass and the fiber cover glass are made of two materials, and the main components of the lithium aluminum silicon glass comprise: siO (SiO) 2 、Al 2 O 3 、Li 2 O、Na 2 O、K 2 O、B 2 O 3 The selection of the components and the effective proportion of the components are in a reasonable range, so that the thermal expansion coefficient, the chemical stability and the thermal property of the lithium aluminum silicon glass are ensured, the preparation requirements of the processes of single filament, multifilament, hot pressing, acid washing and the like can be met, the problems of the preparation process and the chemical strengthening of the reinforced optical fiber panel are solved, and the optical fiber panel with high resolution, high contrast and high strength is prepared.
The scope of the present invention is not limited to the above embodiments, and various modifications and alterations of the present invention will become apparent to those skilled in the art, and any modifications, improvements and equivalents within the spirit and principle of the present invention are intended to be included in the scope of the present invention.
Claims (9)
1. The utility model provides a but chemical strengthening fiber panel, is formed by optical fiber rule two-dimensional arrangement and fusion, its characterized in that, optical fiber includes lithium aluminium silicon core glass and optic fibre skin glass, and optic fibre skin glass parcel lithium aluminium silicon core glass, lithium aluminium silicon core glass component includes: siO2 content is 65-75wt%; al2O3 with the content of 12-20wt%; li2O with the content of 2-5 wt%; na2O with the content of 1-5 wt%; K2O with the content of 1-5 wt%; B2O3 with the content of 0.5-2 wt%;
the mass ratio of (Na2O+Li2O)/(SiO2+Al2O3) in the lithium aluminum silicon core glass is 0.15-0.20.
2. The chemically strengthened optical fiber panel of claim 1 wherein the optical fiber cover glass is a high lead borosilicate glass.
3. The chemically strengthened optical fiber panel of claim 1, wherein the lithium aluminum silicon core glass has an average expansion coefficient of 85 to 95 x 10 at 25 to 300 °c -7 And C/deg. greater than the fiber optic cladding glass.
4. The chemically strengthened optical fiber panel according to claim 3, wherein the glass transition temperature Tg of the lithium aluminum silicon core is 580-600 ℃ and the softening point temperature Tf is 640-660 ℃ greater than the glass of the optical fiber sheath.
5. A method for preparing a chemically strengthened optical fiber panel according to claim 1, wherein the preparation raw materials comprise lithium aluminum silicon core glass and optical fiber cladding glass, and the optical fiber panel blank plate section is obtained through rod tube combination, single filament drawing, primary rod arrangement, multifilament drawing, plate arrangement and vacuum melting and pressing, and then slicing, shaping, grinding, polishing and ion exchange are carried out in molten salt, so that the strengthened optical fiber panel is obtained.
6. The method for manufacturing a chemically strengthened optical fiber panel according to claim 5, comprising the steps of:
(1) Adopting cold processing equipment to process the lithium aluminum silicon core glass and the optical fiber cover glass respectively, so that the outer diameter of the lithium aluminum silicon core glass rod reaches phi 29.5-30.5 mm, the outer diameter of the optical fiber cover glass reaches phi 33.5-35.5 mm, and the wall thickness is 2.0-2.5 mm;
(2) Putting lithium aluminum silicon core glass into an optical fiber skin glass tube, combining the optical fiber skin glass tube and a lithium aluminum silicon core glass rod to form a glass rod tube, and drawing the glass rod tube into monofilaments with the outer diameter of 3.0-3.5 mm plus or minus 0.01mm and the length of 600-840 mm by using an optical fiber drawing machine;
(3) Arranging m glass monofilaments into primary rods in a rod arranging die, binding and fixing the primary rods after rod arrangement by using a raw material belt and an aluminum foil to form a whole;
(4) Drawing the primary rod into an optical fiber multifilament with the opposite side length of 1.1-1.5 mm plus or minus 0.01mm by adopting an optical fiber drawing machine, and then cutting the optical fiber multifilament into a plurality of sections of multifilament with a certain length;
(5) Taking a plurality of multifilament yarns, discharging a hexagonal fiber array plate with the number of opposite sides of 15-20 in a regular hexagonal plate arranging die, and binding and fixing two ends;
(6) Placing the arranged fiber array plates into a special die, and placing the fiber array plates into a vacuum furnace for vacuum melting and pressing, wherein the melting and pressing temperature is 610-630 ℃;
(7) Performing processes such as slicing, shaping, grinding, polishing and the like on the blank plate section of the hexagonal optical fiber panel formed by vacuum melt pressing to obtain an optical fiber panel blank plate with a smooth surface and a consistent shape;
(8) And immersing the optical fiber face plate blank plate into NaNO3 and KNO3 molten salt for ion exchange to prepare the optical fiber panel with high strength.
7. The method for manufacturing a chemically strengthened optical fiber panel according to claim 6, wherein the two glass materials of the lithium aluminum silicon core glass and the optical fiber cover glass have material temperature and expansion coefficient which are matched with each other, and the method meets the preparation process of single filament, multifilament and melt pressure technology.
8. The method of claim 6, wherein the outer diameter and wall thickness of the fiber cover glass tube, the diameter of the lithium aluminum silicon core glass rod, the diameter of the monofilament and the opposite sides of the multifilament are obtained by the preparation requirement of the fiber panel.
9. The method of producing a chemically strengthened optical fiber panel according to claim 6, wherein the molten salt is a mixture of 15% by mass of NaNO3 and 85% by mass of KNO3, the ion exchange temperature is 460 ℃, and the ion exchange time is 300mins.
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| WO2014145426A1 (en) * | 2013-03-15 | 2014-09-18 | Schott Corporation | Optical fiber for the reduction of stimulated brillouin scattering in high-power applications |
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