CN102023318A - Composition of silicate optical fiber with super large mode area and preparation method thereof - Google Patents
Composition of silicate optical fiber with super large mode area and preparation method thereof Download PDFInfo
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- CN102023318A CN102023318A CN200910023895XA CN200910023895A CN102023318A CN 102023318 A CN102023318 A CN 102023318A CN 200910023895X A CN200910023895X A CN 200910023895XA CN 200910023895 A CN200910023895 A CN 200910023895A CN 102023318 A CN102023318 A CN 102023318A
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- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000013307 optical fiber Substances 0.000 title abstract description 37
- 239000000203 mixture Substances 0.000 title abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 97
- 239000011521 glass Substances 0.000 claims abstract description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 15
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims abstract description 12
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052810 boron oxide Inorganic materials 0.000 claims abstract description 6
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 22
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- 238000000137 annealing Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000005491 wire drawing Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(iii) oxide Chemical compound O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 claims description 10
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 10
- ZIKATJAYWZUJPY-UHFFFAOYSA-N thulium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Tm+3].[Tm+3] ZIKATJAYWZUJPY-UHFFFAOYSA-N 0.000 claims description 10
- 229910003454 ytterbium oxide Inorganic materials 0.000 claims description 10
- 229940075624 ytterbium oxide Drugs 0.000 claims description 10
- 239000000377 silicon dioxide Substances 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 6
- 241001397173 Kali <angiosperm> Species 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 5
- 239000004327 boric acid Substances 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 238000005352 clarification Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 5
- PLDDOISOJJCEMH-UHFFFAOYSA-N neodymium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Nd+3].[Nd+3] PLDDOISOJJCEMH-UHFFFAOYSA-N 0.000 claims description 5
- 239000004323 potassium nitrate Substances 0.000 claims description 5
- 235000010333 potassium nitrate Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 abstract description 26
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 229910000464 lead oxide Inorganic materials 0.000 abstract 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 abstract 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 abstract 1
- 229910001950 potassium oxide Inorganic materials 0.000 abstract 1
- 229910052814 silicon oxide Inorganic materials 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 55
- 238000005516 engineering process Methods 0.000 description 11
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 239000005368 silicate glass Substances 0.000 description 3
- 150000004760 silicates Chemical class 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- -1 rare earth ion Chemical class 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- Lasers (AREA)
- Glass Compositions (AREA)
Abstract
The invention provides a composition of a silicate optical fiber with an ultra-large mode area and a preparation method thereof. The fiber comprises a fiber core part and a fiber cladding part, wherein the formula comprises silicon oxide, boron oxide, aluminum oxide, lead oxide, potassium oxide, lanthanum oxide, yttrium oxide and rare earth oxide, the structure of the fiber is gain guide-refractive index reverse guide, the diameter of the fiber core of the gain guide-refractive index reverse guide fiber is far larger than that of the fiber core (4-10 mu m) of a common single mode fiber, and the area of a mode field can reach tens of thousands of square microns. The core diameter is within the range of 100-500 um; the cladding consists of multi-component glass, and the diameter of the cladding is about 250-650 um; the refractive index difference delta n between the fiber core and the cladding is less than 0.05-0.28%, and the problems of more than 100 mu m of mode field diameter and single-mode transmission characteristic are solved.
Description
Technical field
The invention belongs to optical material and laser technology field, be specifically related to composition of the long-pending silicate fibers of a kind of super large die face and preparation method thereof.
Background technology
High-power fiber amplifier and laser instrument are widely used in fields such as Laser Processings.Under high-power pumping, when the optical fiber core diameter was less, fibre core and fiber end face were easy to generate calamitous optical damage; And when the optical fiber core diameter was big, optical fiber be because stimulated Raman scattering and stimulated Brillouin scattering can produce the severe nonlinear effect, thereby influence the beam quality that laser is exported.
Adopt optical fiber and bundle technology or big mould field optical fiber, the restriction that can avoid above-mentioned factor to cause in theory, but the core diameter maximum of the big mould of the step change type field optical fiber of the single-mode laser of having realized at present output only is 40 μ m, and the maximum core diameter of photonic crystal fiber is 100 μ m, when core diameter greater than 100 μ m, near field diffraction pattern can have a strong impact on the beam quality of laser instrument.
In addition, optical fiber and bundle technology do not make a breakthrough yet.Therefore, develop that a kind of super large die face is long-pending, the single-mode laser output optical fibre is significant.
In the conventional art, realize that big mould field optical fiber mainly adopts methods such as reducing numerical aperture and design Refractive Index Profile o.Reduce that numerical aperture will cause that the leaded light effect dies down, loss increases; The design Refractive Index Profile o may be brought the multimode oscillation problem; These two kinds of methods all are to obtain big mode field area by the design optical fiber structure, and the mode field area that can realize has only the hundreds of square micron at present.Therefore, realize more than the mode field diameter 100 μ m, and satisfy the single mode transport characteristic simultaneously that She Ji optical fiber structure is difficult to realize traditionally.
Siegman had proposed a kind of new ideas optical fiber in 2003, and is promptly gain guided---and refractive index inverse-guiding type optical fiber (gain-guided, index-antiguided, GG+IAG).The fiber core refractive index of this optical fiber is less than cladding index (Δ n＜0), and the fiber core refractive index of general single mode fiber is greater than cladding index.
Therefore, at GG+IAG fiber core and covering at the interface, light can not transmit according to total internal reflection principle.The wide part of fibre core transmission leaks in the covering in the GG+IAG optical fiber, and the gain media in the fibre core amplifies light signal simultaneously, with the compensation leakage loss.
Abroad developed in 2006 and mixed Nd
3+Phosphate GG+IAG optical fiber, and realized the single-mode laser output of profile pump and end pumping in 2007, its core diameter is 100 μ m～400 μ m.
Summary of the invention
The invention provides composition of the long-pending silicate fibers of a kind of super large die face and preparation method thereof, mainly solved optical fiber of the prior art and can't satisfy more than the mode field diameter 100 μ m simultaneously and the problem of single mode transport characteristic.
Technical solution of the present invention is as follows:
The fibre core of this silicate fibers, its prescription contains by mole number percent:
The above-mentioned suitable prescription of the present invention contains by mole number percent:
The above-mentioned preferable prescription of the present invention contains by mole number percent:
The above monox, aluminium oxide, massicot are introduced with oxide form, and boron oxide is introduced with boric acid, and kali is introduced with potassium nitrate, and each oxide or compound purity are all greater than 99.6%; Lanthana, yttria purity are greater than 99.99%, and described rare earth oxide is the arbitrary replacement of ytterbium oxide, erbium oxide, neodymia or thulium oxide, are good with ytterbium oxide, and purity is greater than 99.99%.
The covering prescription of this silicate fibers contains by mole number percent:
Above-mentioned preferable prescription contains by mole number percent:
The method of the long-pending silicate fibers preparation of this super large die face may further comprise the steps:
(1) preparation fibre core prefabricated rods
Add in the silica crucible one by one after raw material mixed and heat, heating-up temperature is 900～980 ℃, be 1.0～1.5h heat time heating time, and then molten mass poured in the Pt crucible heat, heating-up temperature is 1100～1150 ℃, be 2.5～3.5h heat time heating time, obtains the glass metal of high temperature homogenizing through stirring, clarification, homogenizing; After temperature is reduced to 890 ℃, the glass metal of high temperature homogenizing is cast in the mould, carries out fine annealing behind the casting complete and handle, annealing temperature is 450 ℃, after finishing, annealing is cooled to room temperature with 1.5～2 ℃/min again, the treated silicate fibers fibre core prefabricated rods that obtains;
(2) preparation covering prefabricated rods
Determine the raw material of covering prefabricated rods according to preparing the selected raw material of fibre core prefabricated rods, after raw material is mixed, according to the preparation method of step (1) preparation fibre core prefabricated rods, preparation covering prefabricated rods;
(3) synthetic fibre-optical
To carry out socket, fusion, surface working and wire drawing processing to fibre core prefabricated rods and covering prefabricated rods, obtain silicate fibers.
During the wire drawing of the above step (3) synthetic fibre-optical was handled, wire-drawing temperature was 780～820 ℃, and charging rate is 1～2mm/min, and drawing speed is 5～10cm/min.
During the above step (1) preparation gain core prefabricated rods, heating is to put into silica crucible earlier to be heated by Elema, and heating-up temperature is 900～980 ℃, and be 1.0～1.5h heat time heating time; After put into the Pt crucible and heat by Elema, heating-up temperature is 1100～1150 ℃, be 2.5～3.5h heat time heating time.
The invention has the advantages that:
1, the structure of silicate fibers provided by the invention is gain guided-refractive index inverse-guiding, and gain guided and refractive index inverse-guiding fibre core diameter is much larger than the core diameter (4～10 μ m) of general single mode fiber, and mode field area can reach square microns up to ten thousand.
2, the core material of silicate fibers provided by the invention is formed by having the active rare earth ion of gain, and core diameter is in 100～500um scope; Covering is made up of multicomponent glass, the about 250～650um of cladding diameter; Refractive indices n＜0.05%～0.28% between fibre core-covering.
3, silicate fibers provided by the invention has good thermal property, optical property, mechanical property and mechanical property, is expected to be applied in the high-capacity optical fiber laser.
4, contain gain media in the fibre core of silicate fibers provided by the invention, so when the fibre core gain coefficient was enough big, the fibre core gain of GG+IAG optical fiber just can partly compensate the tunnelling ray transmission from the sandwich layer to the covering, part is used to realize LP
01Mode oscillation.
Description of drawings
Fig. 1 light gain guided transmission course in refractive index inverse-guiding optical fiber;
Fig. 2 is a big core diameter single-mode fiber end face of the present invention;
Fig. 3 is the big mould field single-mode fiber laser output quality that the present invention relates to.
Embodiment
The present invention
Table 1-1: glass of fiber core is formed: (by mole number percent)
Table 1-2: cladding glass is formed: (by mole number percent)
According to the silicate fibers of group 1～group 12 preparations, it is long-pending to have a very high technology stability, super large die face, and be single-mode fiber, suitable large-scale production.
The purpose that adds PbO in the prescription is to improve glass structure, improves the glass light spectral property; Add K
2The purpose of O is to reduce glass viscosity, makes glass be easy to fusion.
Because fibre core contains gain media (being gain guided optical fiber) and flashlight can be amplified, thus the loss that compensation light leaks.When the gain coefficient of fibre core was enough big, part energy can compensate the tunnelling ray transmission from the fibre core to the covering, and another part energy can be in order to realize LP
01The mould transmission, this moment, the gain coefficient of GG+IAG optical fiber did not reach LP
11The laser generation threshold value of mould, thus realized single-mode laser output.
The optical fiber that prescription by this silicate fibers and preparation method thereof is prepared, structure is gain guided-refractive index inverse-guiding (GG+IAG), the fiber core refractive index that is optical fiber is less than cladding index Δ n＜0 (refractive index inverse-guiding optical fiber), therefore, the transmission of light between fibre core and covering interface is not to adopt total internal reflection principle.In GG+IAG optical fiber, except that having a small amount of glancing light, the wide part of fibre core transmission leaks in the covering, as shown in Figure 1; Fig. 2 is a big core diameter single-mode fiber end face of the present invention, and the big mould field single-mode fiber laser output quality that the present invention relates to as shown in Figure 3.
Because this optical fiber has good thermal property, optical property and mechanical property, be expected to be applied to high energy light fibre laser and amplifier, and key areas such as information industry.
Embodiment 1:
According to the design feature of GG+IAG optical fiber, get the table 1-1 with the table 1-2 in the 1st assembly side process.
Monox, aluminium oxide, massicot are introduced with oxide form in the raw material, and boron oxide is introduced with boric acid, and kali is introduced with potassium nitrate, and each oxide or compound purity are all greater than 99.6%; Lanthana, yttria purity are greater than 99.99%, and described rare earth oxide is the arbitrary replacement of ytterbium oxide, erbium oxide, neodymia or thulium oxide, are good with ytterbium oxide, and purity is greater than 99.99%.Adopt high-temperature fusion technology to prepare the Yb3+ doped silicate glasses.
Add in the silica crucible one by one after raw material mixed and heat, heating-up temperature is 910 ℃, and be 1.0h heat time heating time, and then molten mass poured in the Pt crucible heat, heating-up temperature is 1100 ℃, and be 2.5h heat time heating time, obtains the glass metal of high temperature homogenizing through stirring, clarification, homogenizing; After temperature is reduced to 890 ℃, the glass metal of high temperature homogenizing is cast in the mould, carries out fine annealing behind the casting complete and handle, annealing temperature is 450 ℃, after finishing, annealing is cooled to room temperature with 1.5～2 ℃/min again, the treated silicate fibers fibre core prefabricated rods that obtains.
On the preparation technology basis of glass of fiber core, adjust the respective process parameter and obtain inner cladding glass and surrounding layer glass.
Adopt the rod in tube method drawing optical fiber.At first, adopt mechanical processing method that glass of fiber core rod and inner cladding glass bar, surrounding layer glass bar are processed into required actual geometric configuration of fiber draw process and physical dimension.
The prefabricated rods that processes is carried out wire drawing on wire drawing machine, wire-drawing temperature is 780 ℃, and charging rate is 1mm/min, and drawing speed is 7.5cm/min.
The fiber core refractive index n1=1.57387 of Zhi Bei big core diameter single-mode optical fiber according to the method described above, core diameter is 100 μ m; Inner cladding refractive index n2=1.57432, inner cladding diameter are 250 μ m; Cladding refractive index n3 is 1.50613; Fibre core and inner cladding refractive index difference are Δ n=-0.0045.
Embodiment 2:
According to the design feature of GG+IAG optical fiber, get the table 1-1 with the table 1-2 in the 6th assembly side process.
Monox, aluminium oxide, massicot are introduced with oxide form in the raw material, and boron oxide is introduced with boric acid, and kali is introduced with potassium nitrate, and each oxide or compound purity are all greater than 99.6%; Lanthana, yttria purity are greater than 99.99%, and described rare earth oxide is the arbitrary replacement of ytterbium oxide, erbium oxide, neodymia or thulium oxide, are good with ytterbium oxide, and purity is greater than 99.99%.Adopt high-temperature fusion technology to prepare the Yb3+ doped silicate glasses.
Add in the silica crucible one by one after raw material mixed and heat, heating-up temperature is 940 ℃, and be 1.5h heat time heating time, and then molten mass poured in the Pt crucible heat, heating-up temperature is 1100 ℃, and be 2.5h heat time heating time, obtains the glass metal of high temperature homogenizing through stirring, clarification, homogenizing; After temperature is reduced to 890 ℃, the glass metal of high temperature homogenizing is cast in the mould, carries out fine annealing behind the casting complete and handle, annealing temperature is 450 ℃, after finishing, annealing is cooled to room temperature with 1.5～2 ℃/min again, the treated silicate fibers fibre core prefabricated rods that obtains;
On the preparation technology basis of glass of fiber core, adjust the respective process parameter and obtain inner cladding glass and surrounding layer glass.
Adopt the rod in tube method drawing optical fiber.At first, adopt mechanical processing method that glass of fiber core rod and inner cladding glass bar, surrounding layer glass bar are processed into required actual geometric configuration of fiber draw process and physical dimension.
The prefabricated rods that processes is carried out wire drawing on wire drawing machine, wire-drawing temperature is 800 ℃, and charging rate is 1.5mm/min, and drawing speed is 5cm/min.
The fiber core refractive index n of Zhi Bei big core diameter single-mode optical fiber according to the method described above
1Be 1.57224, core diameter is 300 μ m; Inner cladding refractive index n
2Be 1.57318, the inner cladding diameter is 460 μ m; Cladding refractive index n
3Be 1.50552, the surrounding layer diameter is 520 μ m; Fibre core and inner cladding refractive index difference are-0.00094.
Embodiment 3:
According to the design feature of GG+IAG optical fiber, get the table 1-1 with the table 1-2 in the 10th assembly side process.
Monox, aluminium oxide, massicot are introduced with oxide form in the raw material, and boron oxide is introduced with boric acid, and kali is introduced with potassium nitrate, and each oxide or compound purity are all greater than 99.6%; Lanthana, yttria purity are greater than 99.99%, and described rare earth oxide is the arbitrary replacement of ytterbium oxide, erbium oxide, neodymia or thulium oxide, are good with ytterbium oxide, and purity is greater than 99.99%.Adopt high-temperature fusion technology to prepare the Yb3+ doped silicate glasses.
Add in the silica crucible one by one after raw material mixed and heat, heating-up temperature is 960 ℃, and be 1.5h heat time heating time, and then molten mass poured in the Pt crucible heat, heating-up temperature is 1100 ℃, and be 3.5h heat time heating time, obtains the glass metal of high temperature homogenizing through stirring, clarification, homogenizing; After temperature is reduced to 890 ℃, the glass metal of high temperature homogenizing is cast in the mould, carries out fine annealing behind the casting complete and handle, annealing temperature is 450 ℃, after finishing, annealing is cooled to room temperature with 1.5～2 ℃/min again, the treated silicate fibers fibre core prefabricated rods that obtains.
On the preparation technology basis of glass of fiber core, adjust the respective process parameter and obtain inner cladding glass and surrounding layer glass.
The prefabricated rods that processes is carried out wire drawing on wire drawing machine, wire-drawing temperature is 810 ℃, and charging rate is 1.5mm/min, and drawing speed is 6cm/min.
The fiber core refractive index n of Zhi Bei big core diameter single-mode stripping pattern optical fiber according to the method described above
1Be 1.57286, core diameter is 200 μ m; Inner cladding refractive index n
2Be 1.57402, the inner cladding diameter is 320 μ m; Cladding refractive index n
3Be 1.50564, the surrounding layer diameter is 340 μ m; Fibre core and inner cladding refractive index difference are-0.00116.
Claims (9)
1. the fibre core of a silicate fibers, its prescription contains by mole number percent:
2. the fibre core of silicate fibers according to claim 1 is characterized in that, described prescription contains by mole number percent:
3. the fibre core of silicate fibers according to claim 2 is characterized in that, described prescription contains by mole number percent:
4. according to the fibre core of the arbitrary described silicate fibers of claim 1 to 3, it is characterized in that: described monox, aluminium oxide, massicot are introduced with oxide form, boron oxide is introduced with boric acid, and kali is introduced with potassium nitrate, and each oxide or compound purity are all greater than 99.6%; Lanthana, yttria purity are greater than 99.99%, and described rare earth oxide is the arbitrary replacement of ytterbium oxide, erbium oxide, neodymia or thulium oxide, are good with ytterbium oxide, and purity is greater than 99.99%.
5. the covering of a silicate fibers is characterized in that, described prescription contains by mole number percent:
6. the covering of silicate fibers according to claim 5 is characterized in that, described prescription contains by mole number percent:
7. a method for preparing the long-pending silicate fibers of super large die face is characterized in that, may further comprise the steps:
(1) preparation fibre core prefabricated rods
Add in the silica crucible one by one after raw material mixed and heat, heating-up temperature is 900～980 ℃, be 1.0～1.5h heat time heating time, and then molten mass poured in the Pt crucible heat, heating-up temperature is 1100～1150 ℃, be 2.5～3.5h heat time heating time, obtains the glass metal of high temperature homogenizing through stirring, clarification, homogenizing; After temperature is reduced to 890 ℃, the glass metal of high temperature homogenizing is cast in the mould, carries out fine annealing behind the casting complete and handle, annealing temperature is 450 ℃, after finishing, annealing is cooled to room temperature with 1.5～2 ℃/min again, the treated silicate fibers fibre core prefabricated rods that obtains;
(2) preparation covering prefabricated rods
Determine the raw material of covering prefabricated rods according to preparing the selected raw material of fibre core prefabricated rods, after raw material is mixed, according to the preparation method of step (1) preparation fibre core prefabricated rods, preparation covering prefabricated rods;
(3) synthetic fibre-optical
To carry out socket, fusion, surface working and wire drawing processing to fibre core prefabricated rods and covering prefabricated rods, obtain silicate fibers.
8. the method for preparing silicate fibers according to claim 7 is characterized in that: during the wire drawing of described step (3) synthetic fibre-optical was handled, wire-drawing temperature was 780～820 ℃, and charging rate is 1～2mm/min, and drawing speed is 5～10cm/min.
9. according to claim 7 or the 8 described methods that prepare silicate fibers, it is characterized in that: during described step (1) preparation gain core prefabricated rods, put into silica crucible earlier and heated by Elema, heating-up temperature is 900～980 ℃, and be 1.0～1.5h heat time heating time; After put into the Pt crucible and heat by Elema, heating-up temperature is 1100～1150 ℃, be 2.5～3.5h heat time heating time.
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| CN104402236A (en) * | 2014-10-28 | 2015-03-11 | 中国科学院上海光学精密机械研究所 | Lead silicate glass used in double-clad optical fiber, and double-clad optical fiber preparation method |
| CN106772778A (en) * | 2016-12-14 | 2017-05-31 | 中国人民解放军国防科学技术大学 | Thermic super large mould field optical fiber |
| CN103964696B (en) * | 2014-05-26 | 2017-09-15 | 山东海富光子科技股份有限公司 | The full glass of phosphate silicate for high-capacity optical fiber laser mixes optical fiber |
| CN109061795A (en) * | 2018-09-28 | 2018-12-21 | 镇江微芯光子科技有限公司 | A kind of preparation method of optical fiber |
| CN109164535A (en) * | 2018-09-29 | 2019-01-08 | 镇江微芯光子科技有限公司 | A kind of high-power glass optical fiber |
| CN111170628A (en) * | 2020-01-17 | 2020-05-19 | 中国科学院西安光学精密机械研究所 | Preparation method of tensile optical fiber |
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| US5108961A (en) * | 1989-12-29 | 1992-04-28 | Circon Corporation | Etchable core glass compositions and method for manufacturing a high performance microchannel plate |
| TW593195B (en) * | 2001-02-05 | 2004-06-21 | Koninkl Philips Electronics Nv | Multicomponent glass, glass fiber, twister and taper |
| DE102006012116A1 (en) * | 2006-03-14 | 2007-09-20 | Schott Ag | Glaser fiber cable |
| DE102007063463B4 (en) * | 2007-12-20 | 2010-06-10 | Schott Ag | Core glass in the alkali-zinc-silicate glass system for a fiber optic light guide and the use of the core glass in a light guide |
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| CN104402236A (en) * | 2014-10-28 | 2015-03-11 | 中国科学院上海光学精密机械研究所 | Lead silicate glass used in double-clad optical fiber, and double-clad optical fiber preparation method |
| CN106772778A (en) * | 2016-12-14 | 2017-05-31 | 中国人民解放军国防科学技术大学 | Thermic super large mould field optical fiber |
| CN109061795A (en) * | 2018-09-28 | 2018-12-21 | 镇江微芯光子科技有限公司 | A kind of preparation method of optical fiber |
| CN109164535A (en) * | 2018-09-29 | 2019-01-08 | 镇江微芯光子科技有限公司 | A kind of high-power glass optical fiber |
| CN111170628A (en) * | 2020-01-17 | 2020-05-19 | 中国科学院西安光学精密机械研究所 | Preparation method of tensile optical fiber |
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