CN107721149A - Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber - Google Patents

Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber Download PDF

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Publication number
CN107721149A
CN107721149A CN201711060762.0A CN201711060762A CN107721149A CN 107721149 A CN107721149 A CN 107721149A CN 201711060762 A CN201711060762 A CN 201711060762A CN 107721149 A CN107721149 A CN 107721149A
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low
ultra
alkali metal
loss fiber
inner cladding
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Inventor
朱亦奇
劳雪刚
王友兵
和联科
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Hengtong Optic Electric Co Ltd
Jiangsu Hengtong Photoconductive New Materials Co Ltd
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Jiangsu Hengtong Optic Electric Co Ltd
Jiangsu Hengtong Photoconductive New Materials Co Ltd
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Priority to CN201711060762.0A priority Critical patent/CN107721149A/en
Publication of CN107721149A publication Critical patent/CN107721149A/en
Priority to RU2019107678A priority patent/RU2718453C1/en
Priority to PCT/CN2018/107462 priority patent/WO2019085693A1/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/012—Manufacture of preforms for drawing fibres or filaments
    • C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
    • C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
    • C03B37/01853—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
    • 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
    • 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
    • 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
    • G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
    • 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
    • G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
    • G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
    • G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B2203/00—Fibre product details, e.g. structure, shape
    • C03B2203/32—Eccentric core or cladding

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)

Abstract

The invention discloses a kind of ultra-low-loss fiber, by adding alkali metal in VAD deposition process so that sandwich layer viscosity is reduced, and is more matched with inner cladding and surrounding layer, and internal stress reduces, and the ultra-low-loss fiber of low transmission decay is manufactured with this.A kind of preparation method of ultra-low-loss fiber of the present invention is based on traditional VAD depositing operations; a small amount of alkali metal is adulterated in deposition process; and doping is small; throughput is small, and excessive influence will not be produced on normal deposition process, doping is completed while deposition; it will not extend manufacture cycle; therefore it can guarantee that production is stable, production technology is uncomplicated, available for large-scale production.Optical fiber attenuation can be optimized to ultra-low loss standard by the present invention, can reduce relay station in the high-speed transfer of decay low over long distances, reduce cost, improve transmission quality.

Description

Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber
Technical field
The present invention relates to technical field of optical fiber communication, more particularly to a kind of axial vapor deposition method to prepare ultra-low-loss fiber Prefabricated rods and optical fiber.
Background technology
With the continuous development that long-distance optical fiber transmits, the especially technology such as Internet technology and 4G and EPON Fast development, to reduce fibre loss requirement more and more higher.Current ultra-low-loss fiber plug uses more contains micro alkali The pure silicon plug of metal.Chinese patent CN103472529A and CN102654602A are each provided with pure silicon core scheme and prepare low-loss Optical fiber, Ge is not mixed using core layer, inner cladding depth fluorine doped, the normal fluorine doped of surrounding layer, all refers to prepare deep fluorine doped inner cladding, it is deep Fluorine doped technology difficulty is big, radial refractive index lack of homogeneity, and technique is prepared using method in pipe, and optical wand is size-constrained in basic quartz Pipe, it is difficult to realize mass production.
Existing low-loss optically core rod alkali-metal-doped technique uses pipe external heat mostly, the method for managing interior doping, such as CN103502164A and CN102730977A.But this method speed of production is slow, therefore industrialization behind efficiency is low, cost It is high.
The content of the invention
In view of defect present in above-mentioned prior art, the purpose of the present invention is to propose to a kind of preparation of axial vapor deposition method Ultra-low-loss fiber prefabricated rods and optical fiber.
To achieve these goals, present invention employs following technical scheme：
A kind of ultra-low-loss fiber, including the sandwich layer coated successively, inner cladding and surrounding layer, the sandwich layer are alkali-doped gold Belong to the pure silicon rod of ion, the alkali metal ion concentration adulterated in the sandwich layer is 200ppm-500ppm, and the inner cladding is fluorine doped Quartz socket tube, the surrounding layer are that OVD synthesizes surrounding layer；The ≈ of refractive index contrast Δ 1 of the sandwich layer and the inner cladding 0.4%-0.6%, the ≈ -0.3%--0.4% of refractive index contrast Δ 2 of the inner cladding and the surrounding layer.
Further, the inside pipe wall of the fluorine-doped quartz sleeve pipe deposits fluorine-doped quartz layer by gas phase reaction, is successively formed Until refractive index meets the refractive index contrast of the sandwich layer and the inner cladding.
Further, the fluorine doped concentration of the inner cladding is 500ppm-800ppm.
Further, the diameter sum of a diameter of 7 μm -8 μm of the sandwich layer, the surrounding layer and the inner cladding is 124.5μm-125.5μm。
Further, ratio range of the viscosity of material of the sandwich layer and the inner cladding at 1000 DEG C of high temperature is 1- 1.4。
Further, pad value≤0.158db/km of the ultra-low-loss fiber at 1550nm wavelength, in 1383nm Pad value≤0.28db/km at wavelength.
Further, cutoff wavelength≤1490nm after the ultra-low-loss fiber stranding, the mould at 1550nm wavelength Field diameter≤12.5 μm.
A kind of preparation method of ultra-low-loss fiber, comprises the following steps：
Step 1, loose media is obtained with axial vapor deposition method deposition and alkali doped；
Step 2, to take out loose media and sintering is dehydrated into sintering furnace, alkali metal ion spreads in sandwich layer in sintering process, So as to obtain the plug of uniform doping；
Step 3, outside plug match fluorine-doped quartz sleeve pipe be used as inner cladding, collapsing and extend after obtain extension plug；
Step 4, prefabricated rods are made after increasing surrounding layer outside extension plug；
Step 5, prefabricated rods are subjected to wire drawing process.
Further, the step 1 specifically includes following steps：
S1, alkali metal salt is placed in the heating cabinet below sediment box, heating cabinet is begun to warm up, and keeps vapour pressure to be higher than 0.1kpa, average heating speed are 10 DEG C/min, until internal temperature is more than 900 DEG C, form vapour of an alkali metal, and oxygen is from heating Cabinet side air inlet enters heating cabinet, and is mixed into the vapour of an alkali metal that is formed after mixed gas from heating cabinet lateral flow orifices Into outlet pipe；
S2, sediment box is interior to be operated to form loose media by normal sedimentation flow；
S3, the first blowtorch in sediment box, which starts injection, includes silicon tetrachloride, oxygen, during the unstrpped gas of hydrogen, opening Vapour of an alkali metal valve, outlet speed of the mixed gas in the second blowtorch is adjusted, wherein, the injection of the first blowtorch and the second blowtorch Point is directed at loose media axis, and because loose media keeps rotating, alkali metal can enter whole loose body section.
S4, start normal sedimentation flow, vapour of an alkali metal valve is closed when being nearly completed.
A kind of deposition implantation equipment according to above-mentioned ultra-low-loss fiber preparation method, including sediment box, the deposition The lower section of case is provided with the heating cabinet with a placement alkali metal salt, and the side of the heating cabinet is provided with air inlet, and opposite side is provided with Gas outlet, the gas outlet are provided with vapour of an alkali metal valve；The same side of the sediment box is respectively equipped with sustained height For spraying the first blowtorch of unstrpped gas and the second blowtorch for spraying mixed gas, the gas outlet passes through outlet pipe Connected with second blowtorch.
The present invention protrusion effect be：A kind of ultra-low-loss fiber of the present invention, by adding in VAD deposition process Add alkali metal so that sandwich layer viscosity reduces, and more matches with inner cladding and surrounding layer, and internal stress reduces, and is made with this Make the ultra-low-loss fiber of low transmission decay.A kind of optical parametric such as mode field diameter of ultra-low-loss fiber of the present invention, cut-off Wavelength and optical fiber attenuation etc. meet ITU-T G.654 standard, and bending property is higher than G.654 standard.The one of the present invention The preparation method of kind ultra-low-loss fiber adulterates a small amount of alkali metal based on traditional VAD depositing operations in deposition process, and Doping is small, and throughput is small, and excessive influence will not be produced on normal deposition process, doping, Bu Huiyan are completed while deposition The long production cycle, therefore can guarantee that production is stable, production technology is uncomplicated, available for large-scale production.The present invention can be by light Fibre decay is optimized to ultra-low loss standard, can reduce relay station in the high-speed transfer of decay low over long distances, reduce cost, carry High-transmission quality.
Brief description of the drawings
Fig. 1 is 1-3 of embodiment of the present invention ultra-low-loss fiber sagittal plane schematic diagram；
Fig. 2 is the deposition implantation equipment structural representation of the embodiment of the present invention 1；
Fig. 3 is the deposition implantation equipment sectional view of the embodiment of the present invention 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.
Embodiment 1
As shown in figure 1, a kind of ultra-low-loss fiber of the present embodiment, including the sandwich layer 1 coated successively, inner cladding 2 and outer Covering 3, sandwich layer 1 are the pure silicon rod of alkali doped ion, and the alkali metal ion concentration adulterated in sandwich layer 1 is 200ppm, interior bag Layer 2 is fluorine-doped quartz sleeve pipe, and surrounding layer 3 is that OVD synthesizes surrounding layer；The ≈ of refractive index contrast Δ 1 of sandwich layer 1 and inner cladding 2 0.4%, the ≈ -0.3% of refractive index contrast Δ 2 of inner cladding 2 and surrounding layer 3.
The inside pipe wall of fluorine-doped quartz sleeve pipe deposits fluorine-doped quartz layer by gas phase reaction, is successively formed until refractive index meets The refractive index contrast of sandwich layer 1 and inner cladding 2.
The fluorine doped concentration of inner cladding 2 is 500ppm.
The diameter sum of a diameter of 7 μm of sandwich layer 1, surrounding layer 3 and inner cladding 2 is 124.5 μm.
Ratio range of the viscosity of material of sandwich layer 1 and inner cladding 2 at 1000 DEG C of high temperature is 1.
A kind of preparation method of ultra-low-loss fiber, comprises the following steps：
Step 1, loose media is obtained with axial vapor deposition method deposition and alkali doped；
Step 2, to take out loose media and sintering is dehydrated into sintering furnace, alkali metal ion spreads in sandwich layer in sintering process, So as to obtain the plug of uniform doping；
Step 3, outside plug match fluorine-doped quartz sleeve pipe be used as inner cladding, collapsing and extend after obtain extension plug；
Step 4, prefabricated rods are made after increasing surrounding layer outside extension plug；
Step 5, prefabricated rods are subjected to wire drawing process.
Step 1 specifically includes following steps：
S1, alkali metal salt is placed in the heating cabinet below sediment box, heating cabinet is begun to warm up, and keeps vapour pressure to be higher than 0.1kpa, average heating speed are 10 DEG C/min, until internal temperature is more than 900 DEG C, form vapour of an alkali metal, and oxygen is from heating Cabinet side air inlet enters heating cabinet, and is mixed into the vapour of an alkali metal that is formed after mixed gas from heating cabinet lateral flow orifices Into outlet pipe；
S2, interior operated by normal sedimentation flow to heap ball of sediment box form loose media；
S3, the first blowtorch in sediment box, which starts injection, includes silicon tetrachloride, oxygen, during the unstrpped gas of hydrogen, opening Vapour of an alkali metal valve, outlet speed of the mixed gas in the second blowtorch is adjusted, wherein, the injection of the first blowtorch and the second blowtorch Point is directed at loose media axis, and because loose media keeps rotating, alkali metal can enter whole loose body section.
S4, start normal sedimentation flow, vapour of an alkali metal valve is closed when being nearly completed.
As Figure 2-3, a kind of deposition implantation equipment according to above-mentioned ultra-low-loss fiber preparation method, including deposition Case 21, the lower section of sediment box 21 are provided with the heating cabinet 22 with a placement alkali metal salt, and the side of heating cabinet 22 is provided with air inlet 23, opposite side is provided with gas outlet 24, and gas outlet 24 is provided with vapour of an alkali metal valve (not shown)；Sediment box 21 it is same Side is respectively equipped with the first blowtorch 25 for being used to spray unstrpped gas of sustained height and the second spray for spraying mixed gas The spray site of lamp 26, the first blowtorch 25 and the second blowtorch 26 is directed at the axis of loose media 27, and gas outlet 24 passes through outlet pipe 28 Connected with the second blowtorch 26.
The present embodiment is made Fiber Optical Parametric and carries out test confirmation by OTDR and other pertinent instruments, including refractive index is cutd open Face, 1550nm decay, 1383nm decay, cutoff wavelength, mode field diameter, macrobending loss etc..Ultra-low-loss fiber is in 1550nm ripples Pad value≤0.158db/km of strong point, pad value≤0.28db/km at 1383nm wavelength.After ultra-low-loss fiber stranding Cutoff wavelength≤1490nm, mode field diameter≤12.5 μm at 1550nm wavelength.
Embodiment 2
As shown in figure 1, a kind of ultra-low-loss fiber of the present embodiment, including the sandwich layer 1 coated successively, inner cladding 2 and outer Covering 3, sandwich layer 1 are the pure silicon rod of alkali doped ion, and the alkali metal ion concentration adulterated in sandwich layer 1 is 500ppm, interior bag Layer 2 is fluorine-doped quartz sleeve pipe, and surrounding layer 3 is that OVD synthesizes surrounding layer；The ≈ of refractive index contrast Δ 1 of sandwich layer 1 and inner cladding 2 0.6%, the ≈ -0.4% of refractive index contrast Δ 2 of inner cladding 2 and surrounding layer 3.
The inside pipe wall of fluorine-doped quartz sleeve pipe deposits fluorine-doped quartz layer by gas phase reaction, is successively formed until refractive index meets The refractive index contrast of sandwich layer 1 and inner cladding 2.
The fluorine doped concentration of inner cladding 2 is 800ppm.
The diameter sum of a diameter of 8 μm of sandwich layer 1, surrounding layer 3 and inner cladding 2 is 125.5 μm.
Ratio range of the viscosity of material of sandwich layer 1 and inner cladding 2 at 1000 DEG C of high temperature is 1.4.
Embodiment 3
As shown in figure 1, a kind of ultra-low-loss fiber of the present embodiment, including the sandwich layer 1 coated successively, inner cladding 2 and outer Covering 3, sandwich layer 1 are the pure silicon rod of alkali doped ion, and the alkali metal ion concentration adulterated in sandwich layer 1 is 400ppm, interior bag Layer 2 is fluorine-doped quartz sleeve pipe, and surrounding layer 3 is that OVD synthesizes surrounding layer；The ≈ of refractive index contrast Δ 1 of sandwich layer 1 and inner cladding 2 0.5%, the ≈ -0.4% of refractive index contrast Δ 2 of inner cladding 2 and surrounding layer 3.
The inside pipe wall of fluorine-doped quartz sleeve pipe deposits fluorine-doped quartz layer by gas phase reaction, is successively formed until refractive index meets The refractive index contrast of sandwich layer 1 and inner cladding 2.
The fluorine doped concentration of inner cladding 2 is 600ppm.
The diameter sum of a diameter of 7 μm of sandwich layer 1, surrounding layer 3 and inner cladding 2 is 125 μm.
Ratio range of the viscosity of material of sandwich layer 1 and inner cladding 2 at 1000 DEG C of high temperature is 1.2.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (10)

  1. A kind of 1. ultra-low-loss fiber, it is characterised in that：Including the sandwich layer coated successively, inner cladding and surrounding layer, the sandwich layer For the pure silicon rod of alkali doped ion, the alkali metal ion concentration adulterated in the sandwich layer is 200ppm-500ppm, it is described in Covering is fluorine-doped quartz sleeve pipe, and the surrounding layer is that OVD synthesizes surrounding layer；The relative index of refraction of the sandwich layer and the inner cladding The poor ≈ 0.4%-0.6% of Δ 1, the ≈ -0.3%--0.4% of refractive index contrast Δ 2 of the inner cladding and the surrounding layer.
  2. A kind of 2. ultra-low-loss fiber according to claim 1, it is characterised in that：The inside pipe wall of the fluorine-doped quartz sleeve pipe Fluorine-doped quartz layer is deposited by gas phase reaction, successively formed until refractive index meets the relative folding of the sandwich layer and the inner cladding It is poor to penetrate rate.
  3. A kind of 3. ultra-low-loss fiber according to claim 1, it is characterised in that：The fluorine doped concentration of the inner cladding is 500ppm-800ppm。
  4. A kind of 4. ultra-low-loss fiber according to claim 1, it is characterised in that：A diameter of 7 μm of 1 μ of the sandwich layer The diameter sum of m, the surrounding layer and the inner cladding is 124.5 μm -125.5 μm.
  5. A kind of 5. ultra-low-loss fiber according to claim 1, it is characterised in that：The material of the sandwich layer and the inner cladding Expect that ratio range of the viscosity at 1000 DEG C of high temperature is 1-1.4.
  6. A kind of 6. ultra-low-loss fiber according to claim 1, it is characterised in that：The ultra-low-loss fiber is in 1550nm Pad value≤0.158db/km at wavelength, pad value≤0.28db/km at 1383nm wavelength.
  7. A kind of 7. ultra-low-loss fiber according to claim 1, it is characterised in that：After the ultra-low-loss fiber stranding Cutoff wavelength≤1490nm, mode field diameter≤12.5 μm at 1550nm wavelength.
  8. 8. a kind of preparation method of ultra-low-loss fiber, it is characterised in that comprise the following steps：
    Step 1, loose media is obtained with axial vapor deposition method deposition and alkali doped；
    Step 2, to take out loose media and sintering is dehydrated into sintering furnace, alkali metal ion spreads in sandwich layer in sintering process, so as to Obtain the plug of uniform doping；
    Step 3, outside plug match fluorine-doped quartz sleeve pipe be used as inner cladding, collapsing and extend after obtain extension plug；
    Step 4, prefabricated rods are made after increasing surrounding layer outside extension plug；
    Step 5, prefabricated rods are subjected to wire drawing process.
  9. A kind of 9. preparation method of ultra-low-loss fiber according to claim 8, it is characterised in that：The step 1 is specific Comprise the following steps：
    S1, alkali metal salt is placed in the heating cabinet below sediment box, heating cabinet is begun to warm up, and keeps vapour pressure to be higher than 0.1kpa, Average heating speed is 10 DEG C/min, until internal temperature is more than 900 DEG C, forms vapour of an alkali metal, and oxygen is from heating cabinet side Air inlet enters heating cabinet, and is mixed into the vapour of an alkali metal formed after mixed gas and enters from heating cabinet lateral flow orifices Feed channel；
    S2, sediment box is interior to be operated to form loose media by normal sedimentation flow；
    S3, the first blowtorch in sediment box, which starts injection, includes silicon tetrachloride, oxygen, and during the unstrpped gas of hydrogen, it is golden to open alkali Belong to steam valve, adjust outlet speed of the mixed gas in the second blowtorch, wherein, the spray site of the first blowtorch and the second blowtorch is equal Loose media axis is directed at, because loose media keeps rotating, alkali metal can enter whole loose body section.
    S4, start normal sedimentation flow, vapour of an alkali metal valve is closed when being nearly completed.
  10. A kind of 10. deposition implantation equipment of ultra-low-loss fiber preparation method according to claim 9, it is characterised in that： Including sediment box, the lower section of the sediment box is provided with the heating cabinet with a placement alkali metal salt, and the side of the heating cabinet is set There is air inlet, opposite side is provided with gas outlet, and the gas outlet is provided with vapour of an alkali metal valve；The same side of the sediment box point It She You not be used to spray the first blowtorch of unstrpped gas and the second blowtorch for spraying mixed gas in sustained height, it is described Gas outlet is connected by outlet pipe with second blowtorch.
CN201711060762.0A 2017-11-01 2017-11-01 Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber Pending CN107721149A (en)

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CN201711060762.0A CN107721149A (en) 2017-11-01 2017-11-01 Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber
RU2019107678A RU2718453C1 (en) 2017-11-01 2018-09-26 Billet for ultra-low loss fiber and fiber obtained by a vapor phase axial deposition method
PCT/CN2018/107462 WO2019085693A1 (en) 2017-11-01 2018-09-26 Preparation of ultra-low loss optical fiber preform and optical fiber by means of axial vapor deposition

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CN109553295A (en) * 2018-12-25 2019-04-02 江苏通鼎光棒有限公司 A kind of low-loss preform of large scale and its manufacturing method
WO2019085693A1 (en) * 2017-11-01 2019-05-09 江苏亨通光导新材料有限公司 Preparation of ultra-low loss optical fiber preform and optical fiber by means of axial vapor deposition
CN110395900A (en) * 2019-08-02 2019-11-01 长飞光纤光缆股份有限公司 A kind of outer method of pipe prepares the precipitation equipment and method of low transmission loss optical fiber prefabricated rods
WO2020098186A1 (en) * 2018-11-14 2020-05-22 江苏亨通光导新材料有限公司 Optical fiber preform rod and preparation method thereof, and optical fiber and preparation method thereof
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CN111807699A (en) * 2020-08-06 2020-10-23 江苏亨通光导新材料有限公司 Manufacturing method of bending-resistant optical fiber and optical fiber corresponding to manufacturing method
CN111847869A (en) * 2020-08-06 2020-10-30 江苏亨通光导新材料有限公司 Preparation method of ultralow-loss optical fiber and optical fiber corresponding to preparation method
WO2020248552A1 (en) * 2019-06-12 2020-12-17 烽火通信科技股份有限公司 Ultra-low attenuation large effective area single-mode optical fibre
CN113213752A (en) * 2021-03-18 2021-08-06 山东富通光导科技有限公司 Method for preparing ultralow-loss optical fiber preform and optical fiber by external gas phase deposition method
CN113912279A (en) * 2020-07-10 2022-01-11 中天科技精密材料有限公司 Axial deposition doping device and preparation method of powder rod

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950038A (en) * 1982-09-10 1984-03-22 Sumitomo Electric Ind Ltd Manufacture of optical fiber containing tio2
CN103619767A (en) * 2011-11-21 2014-03-05 住友电气工业株式会社 Optical fiber preform, method for producing optical fiber, and optical fiber
CN106219962A (en) * 2016-07-22 2016-12-14 长飞光纤光缆股份有限公司 A kind of method preparing preform

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6246934A (en) * 1985-08-22 1987-02-28 Kokusai Denshin Denwa Co Ltd <Kdd> Method and apparatus for producing base material for fluoride glass fiber
JPH0717735A (en) * 1993-06-30 1995-01-20 Fujikura Ltd High dispersion optical fiber and manufacture thereof
US6970630B2 (en) * 2002-05-23 2005-11-29 Rutgers, The State University Of New Jersey Fiber optic cable and process for manufacturing
US7088900B1 (en) * 2005-04-14 2006-08-08 Corning Incorporated Alkali and fluorine doped optical fiber
WO2009034413A1 (en) * 2007-09-14 2009-03-19 Draka Comteq B.V. Optical fiber and method for manufacturing
JP2012162410A (en) * 2011-02-03 2012-08-30 Sumitomo Electric Ind Ltd Method for producing optical fiber preform
JP5545236B2 (en) * 2011-02-03 2014-07-09 住友電気工業株式会社 Optical fiber preform manufacturing method
JP6136261B2 (en) * 2012-01-23 2017-05-31 住友電気工業株式会社 Optical fiber
JP5625037B2 (en) * 2012-03-23 2014-11-12 株式会社フジクラ Manufacturing method of glass base material
JP6551109B2 (en) * 2014-11-20 2019-07-31 住友電気工業株式会社 Optical fiber
CN107721149A (en) * 2017-11-01 2018-02-23 江苏亨通光导新材料有限公司 Axial vapor deposition method prepares ultra-low-loss fiber prefabricated rods and optical fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950038A (en) * 1982-09-10 1984-03-22 Sumitomo Electric Ind Ltd Manufacture of optical fiber containing tio2
CN103619767A (en) * 2011-11-21 2014-03-05 住友电气工业株式会社 Optical fiber preform, method for producing optical fiber, and optical fiber
CN106219962A (en) * 2016-07-22 2016-12-14 长飞光纤光缆股份有限公司 A kind of method preparing preform

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019085693A1 (en) * 2017-11-01 2019-05-09 江苏亨通光导新材料有限公司 Preparation of ultra-low loss optical fiber preform and optical fiber by means of axial vapor deposition
CN109100827A (en) * 2018-07-13 2018-12-28 上海大学 A kind of optical fiber and preparation method thereof kept for vortex beams transmission
WO2020098186A1 (en) * 2018-11-14 2020-05-22 江苏亨通光导新材料有限公司 Optical fiber preform rod and preparation method thereof, and optical fiber and preparation method thereof
CN111320376A (en) * 2018-12-15 2020-06-23 中天科技精密材料有限公司 Optical fiber preform and method for manufacturing the same
CN111320376B (en) * 2018-12-15 2023-09-12 中天科技精密材料有限公司 Optical fiber preform and method for manufacturing the same
CN109553295A (en) * 2018-12-25 2019-04-02 江苏通鼎光棒有限公司 A kind of low-loss preform of large scale and its manufacturing method
CN109553295B (en) * 2018-12-25 2021-09-10 江苏通鼎光棒有限公司 Large-size low-loss optical fiber preform and manufacturing method thereof
WO2020248552A1 (en) * 2019-06-12 2020-12-17 烽火通信科技股份有限公司 Ultra-low attenuation large effective area single-mode optical fibre
CN110395900A (en) * 2019-08-02 2019-11-01 长飞光纤光缆股份有限公司 A kind of outer method of pipe prepares the precipitation equipment and method of low transmission loss optical fiber prefabricated rods
CN113912279A (en) * 2020-07-10 2022-01-11 中天科技精密材料有限公司 Axial deposition doping device and preparation method of powder rod
CN113912279B (en) * 2020-07-10 2023-03-31 中天科技精密材料有限公司 Axial deposition doping device and preparation method of powder rod
CN111807699A (en) * 2020-08-06 2020-10-23 江苏亨通光导新材料有限公司 Manufacturing method of bending-resistant optical fiber and optical fiber corresponding to manufacturing method
WO2022027796A1 (en) * 2020-08-06 2022-02-10 江苏亨通光导新材料有限公司 Bend-resistant optical fiber manufacturing method and optical fiber corresponding thereto
CN111847869A (en) * 2020-08-06 2020-10-30 江苏亨通光导新材料有限公司 Preparation method of ultralow-loss optical fiber and optical fiber corresponding to preparation method
CN113213752A (en) * 2021-03-18 2021-08-06 山东富通光导科技有限公司 Method for preparing ultralow-loss optical fiber preform and optical fiber by external gas phase deposition method

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