CN104261670A - Method for manufacturing optical fiber - Google Patents
Method for manufacturing optical fiber Download PDFInfo
- Publication number
- CN104261670A CN104261670A CN201410487664.5A CN201410487664A CN104261670A CN 104261670 A CN104261670 A CN 104261670A CN 201410487664 A CN201410487664 A CN 201410487664A CN 104261670 A CN104261670 A CN 104261670A
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- CN
- China
- Prior art keywords
- optical fiber
- fluorine
- layer
- core layer
- covering
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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
- C03B37/014—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
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
- C03B2201/10—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with boron
-
- 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
-
- 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
- C03C2213/00—Glass fibres or filaments
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Compositions (AREA)
Abstract
The invention discloses a method for manufacturing an optical fiber. The optical fiber comprises a fiber core layer and a cladding layer, wherein the cladding layer wraps the fiber core layer. The cladding layer is doped with fluorine and the fiber core layer is doped with F and Cl instead of Ge, wherein the doping concentrations of F and Cl are controlled at less than or equal to 50-500ppm; the cladding layer sequentially comprises an inner cladding layer, a depressed cladding layer and an outer cladding layer from inside to outside, wherein the depressed cladding layer is made of fluorine-doped substrate tubes and the outer cladding layer is made of fluorine-doped pure quartz sleeves. The fiber core layer and the inner cladding layer are prepared by fluorine-doped quartz tubes by virtue of a PCVD process in one time and then assembling with a low-refractive-index sleeve column and carrying out online RIC drawing. The fiber core layer is jointly doped with F and Cl; according to the cladding layer, C2F6 or SiF6 is adopted as a fluorine-doped starting material and subjected to gas-phase reaction on the inner wall of the fluorine-doped quartz tubes so as to deposit a fluorine-doped quartz layer and sequentially layer by layer form the inner cladding layer, the depressed cladding layer and the outer cladding layer.
Description
Technical field
The present invention relates to Optical Fiber Transmission field; particularly relate to a kind of production method of large effective area low loss fiber prefabricated rods; combined by PCVD+RIC; large effective area low loss fiber can not only be produced; adopt RIC method to be applicable to large-scale production simultaneously; more specifically, the present invention relates to a kind of manufacture method of optical fiber.
Background technology
Along with the development of international telecommunication service, the especially fast development of Internet technology and the technology such as 3G and EPON, the demand of communication system to fiber bandwidth presents very fast rising tendency.In the communication system of long distance, Large Copacity, high rate data transmission, usually need to use fiber optical amplifier technology and wavelength-division multiplex technique, especially in backbone network and submarine communication, have higher requirement to the unrepeatered transmission distance of optical fiber and transmission capacity.But the growth of transmission capacity and distance needs higher launched power and lower fibre loss to meet distinguishable signal to noise ratio demand.And along with the increase of launched power, the non-linear effect of optical fiber also increases greatly, so, in the transmission system of Large Copacity, two-forty, performance for Transmission Fibers proposes higher demand, is improved the object that can reach and reduce non-linear effect by optical fiber property.
Patent documentation publication number is " a kind of large effective area fiber " of CN103257393A, provides 5 layers of waveguiding structure design, comprises two-layer sandwich layer; three layers of covering, waveguide design is too complicated, controls difficulty large; because adopting PCVD directly rod processed, optical wand size is little, is difficult to be applicable to large-scale production.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of manufacture method of optical fiber, optical fiber meets or surmounts G.654ITU-T standard, uses tiretube process to be applicable to large-scale production.
The present invention realizes like this, a kind of manufacture method of optical fiber, described optical fiber comprises core layer and covering, covering described in described core layer outer cladding, the manufacture method of described optical fiber is: described doped cladding layer fluorine, described core layer does not mix germanium, and described core layer mixes fluorine and chlorine, and the doping content of fluorine and chlorine controls at≤50-500ppm; Described covering comprises inner cladding from inside to outside successively, sink covering and surrounding layer; Described sagging covering is made for mixing fluorine-based bottom tube, and described surrounding layer is made for mixing the pure quartz socket tube of fluorine; Described core layer, described inner cladding adopt fluorine-doped quartz pipe to be once prepared from by PCVD technique, and carry out online RIC wire drawing after then assembling with low-refraction sleeve column, wherein, described core layer is fluorine, chlorine co-doped; Described covering is with C
2f
6or SiF
6as mixing fluorine raw material, at described fluorine-doped quartz inside pipe wall gas-phase reaction deposition fluorine-doped quartz layer, successively form described inner cladding, described sagging covering and described surrounding layer successively.
As the further improvement of such scheme, described core layer radius r
1be 5 ~ 7um.
As the further improvement of such scheme, described inner cladding diameter r
2be 7 ~ 20um.
As the further improvement of such scheme, described sagging cladding radius r
3be 12 ~ 40um.
As the further improvement of such scheme, described surrounding layer radius r
4be 62.5 ± 0.5um.
As the further improvement of such scheme, the material of described core layer and the material at high temperature viscosity coupling of described covering: the viscosity of material of described core layer and the viscosity of material of described covering are at 2000 DEG C of high temperature; The viscosity ratio range of the viscosity of material of described core layer and the viscosity of material of described covering is 1 ~ 1.5.Preferably, the viscosity ratio range of the viscosity of material of described core layer and the viscosity of material of described covering is 1 ~ 1.3.
As the further improvement of such scheme, the scattering coefficient α≤0.85db/km.um^4 of described optical fiber.
As the further improvement of such scheme, described optical fiber is 110 ~ 150um^2 at the useful area at 1550nm wavelength place, at the pad value≤0.180db/km at 1550nm wavelength place.
As the further improvement of such scheme, the cable cut-off wavelength≤1530nm of described optical fiber.
The present invention is followed successively by the optical fiber structure of core layer, inner cladding, sink covering and surrounding layer from inside to outside by design, the employing of core layer, inner cladding is deeply mixed fluorine pipe and is once prepared from by PCVD technique, then online RIC wire drawing is carried out after assembling with low-refraction sleeve column, production technique and waveguiding structure simply, are highly suitable for large-scale production; When PCVD prepares this type of plug, be matched cladding viscosity, sandwich layer is F, Cl co-doped, and covering is with C
2f
6or SiF
6as mixing fluorine raw material, mixing fluorine inside pipe wall gas-phase reaction deposition fluorine-doped quartz layer, successively form covering, its specific refractory power is made to reach required target value, because not using Ge to adulterate in process, compared with conventional SMF, reduce the loss that Rayleigh scattering is brought fully, be conducive to the reduction of optical fiber attenuation; Introduce and deeply mix fluorine low-refraction quartz base tube, when useful area increases, good fibre-optical bending performance can be kept, improve the negative impact of the fibre-optical bending performance that the increase because of useful area brings, can reduce OH-penetrates into sandwich layer simultaneously, greatly reduces the water peak of optical fiber.
Accompanying drawing explanation
Fig. 1 is the process flow sheet that the present invention manufactures optical fiber.
Fig. 2 is the radial section structural representation of optical fiber in Fig. 1.
Fig. 3 is the refractive index profile structural representation of optical fiber in Fig. 1.
Fig. 4 is the refractive index profile structural representation of optical fiber in Fig. 1.
Fig. 5 be in Fig. 1 the online RIC of optical fiber assembled after schematic diagram.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
See also Fig. 1, Fig. 2, Fig. 3 and Fig. 4, optical fiber of the present invention comprises core layer 1 and covering, covering described in described core layer outer cladding.Described covering comprises inner cladding 2 from inside to outside successively, sink covering 3 and surrounding layer 4.
Core layer 1 does not mix Ge, but for avoiding core layer 1 to cause optical fiber attenuation to increase with the viscosity mismatch of inner cladding 2, core layer 1 can be mixed F and Cl on a small quantity and be carried out matched cladding viscosity, and core layer 1 doping content controls at≤50-500ppm, described core layer 1 refractive index n
1close to pure quartzy refractive index n
0, refractive index contrast Δ 1=n
1-n
0≈-0.05% ~ 0.05%, core layer 1 radius r
1be 5 ~ 7um.In below introducing, relative refractive index is all with pure quartzy refractive index n
0for reference.
Doped cladding layer fluorine, core layer 1 outer cladding inner cladding 2, described inner cladding 2 radius r
2be 7 ~ 20um, refractive index contrast Δ 2=n
2-n
0for-0.4% < Δ 2 <-0.2%; The covering 3 that sink is made for mixing fluorine-based bottom tube, described sagging covering 3 radius r
3be 12 ~ 40um, refractive index contrast Δ 3=n
3-n
0for-0.6% < Δ 3 <-0.3%; Outermost layer is surrounding layer 4, and described surrounding layer 4 is that high-purity fluorine-doped quartz sleeve pipe is made, surrounding layer 4 radius r
4be 62.5 ± 0.5um.Described surrounding layer 4 refractive index contrast Δ 4=n
4-n
0for-0.3% < Δ 3 <-0.1%.Wherein, n
2for the specific refractory power of described inner cladding 2; n
3for the specific refractory power of described sagging covering 3; n
4for the specific refractory power of described surrounding layer 4.
Core layer 1 material and clad material high temperature viscosity coupling, core layer 1 viscosity of material and clad material viscosity are near 2000 DEG C, and both ratio ranges are 1 ~ 1.5, and preferably 1 ~ 1.3.
Adopt the optical fiber of structure of the present invention, scattering coefficient α≤the 0.85db/km.um^4 of described optical fiber, described optical fiber is 110 ~ 150um^2 at the useful area at 1550nm wavelength place, at the pad value≤0.180db/km at 1550nm wavelength place, cable cut-off wavelength≤the 1530nm of described optical fiber, described optical fiber macrobending loss meets ITU-T G.657A1 standard.As Fig. 3, according to the technological process of production to drawing optical fibers, prepared optical fiber uses the refractive index profile structural representation of S14 testing of equipment.
See also Fig. 4 and Fig. 5, wherein, Fig. 4 is before this type optical fiber of exploitation, uses Fiber CAD software design fibre-optic waveguide structure, makes the optical parametric designing optical fiber meet standard by analog simulation; In Fig. 5, non-wire drawing is front has assembled rear preform, low-refraction sleeve column 11, plug 12 (PCVD preparation), quartz glass bar 13, the large tail pipe 14 of recyclable quartz, the little tail pipe 15 of recyclable quartz.Consider that end wire drawing utilization ratio is very low, therefore directly substitute with the quartz glass bar (13) of 100mm, while economizing on the use of funds, also carry out energy-saving and emission-reduction.
Described core layer 1, described inner cladding 2 adopt fluorine-doped quartz pipe to be once prepared from by PCVD technique, carry out online RIC wire drawing after then assembling with low-refraction sleeve column, and wherein, described core layer 1 is F, Cl co-doped; Described covering is with C
2f
6or SiF
6as mixing fluorine raw material, at described fluorine-doped quartz inside pipe wall gas-phase reaction deposition fluorine-doped quartz layer, successively form described inner cladding 2, described sagging covering 3 and described surrounding layer 4 successively and make the specific refractory power of described inner cladding 2, described sagging covering 3 and described surrounding layer 4 reach n successively simultaneously
2, n
3, n
4.Plug prepared by the corresponding PCVD technique of core layer 1, inner cladding 2; Fluorine thin skin pipe is mixed in the corresponding outsourcing of covering 3 of sinking; Surrounding layer 4 corresponding outsourcing low-refraction sleeve column.
Core layer 1, inner cladding 2 and sagging covering 3 adopt the manufacture of PCVD method, adopt fluorine-doped quartz pipe as chemical gas phase reaction deposited tube, adopt SiCl
4as SiO
2raw material, C
2f
6or SiF
4as mixing fluorine raw material, first at deposited tube inwall gas-phase reaction deposition fluorine-doped quartz layer, successively form covering; Change the flow of chemical reaction gas, that reduces settled layer mixes Funing tablet, meanwhile, regulates the ratio of reactant gases and the translational speed of reaction zone, can improve the concentration of mixing chlorine, obtained core layer 1 of mixing fluorine chlorine altogether; Finally, high temperature melting is shortened into after plug (band inner cladding and sagging covering) is assembled with high-purity fluorine-doped quartz sleeve column and directly carry out high temperature wire drawing (being commonly called as " online RIC method ").
The present invention utilizes PK2200 to carry out test confirmation to Fiber Optical Parametric, and the added losses of measuring fiber under the differently curved radius of 1550nm and 1625nm wavelength; Utilize OTDR to measure optical fiber attenuation, the S14 equipment of recycling PK company is tested Refractive Index Profile of Optical.
From above embodiment, can illustrate that the requirement of ITU-T G.654 standard can be accomplished to meet completely in the optical parametric of optical fiber of the present invention such as the aspects such as mode field diameter, cutoff wavelength and fibre loss, and bending property is better than the requirement of G.654 standard greatly, on this basis, useful area can reach more than 120 square microns, and this operational path is ripe, stable, is very easy to carry out mass production.Useful area and the important performance index of bending loss these two can reach simultaneously optimize as much as possible by the present invention.This is extremely important apart from jumbo high-speed transfer for long, there is outstanding bending property simultaneously, not only can save the laid down cost of opticfiber communication cable, also reduce in laying work the detrimentally affect that communication system performance causes, there is important using value.
The present invention is by a kind of optical fiber structure new temporarily of design: be followed successively by core layer, inner cladding from inside to outside, sink covering and surrounding layer, the employing of core layer, inner cladding is deeply mixed fluorine pipe and is once prepared from by PCVD technique, then online RIC wire drawing is carried out after assembling with low-refraction sleeve column, production technique and waveguiding structure simply, are highly suitable for large-scale production; When PCVD prepares this type of plug, be matched cladding viscosity, sandwich layer is F, Cl co-doped, and covering is with C
2f
6or SiF
6as mixing fluorine raw material, mixing fluorine inside pipe wall gas-phase reaction deposition fluorine-doped quartz layer, successively form covering, its specific refractory power is made to reach required target value, because not using Ge to adulterate in process, compared with conventional SMF, reduce the loss that Rayleigh scattering is brought fully, be conducive to the reduction of optical fiber attenuation; Introduce and deeply mix fluorine low-refraction quartz base tube, when useful area increases, good fibre-optical bending performance can be kept, improve the negative impact of the fibre-optical bending performance that the increase because of useful area brings, can reduce OH-penetrates into sandwich layer simultaneously, greatly reduces the water peak of optical fiber.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. the manufacture method of an optical fiber, described optical fiber comprises core layer and covering, covering described in described core layer outer cladding, it is characterized in that: the manufacture method of described optical fiber is: described doped cladding layer fluorine, described core layer does not mix germanium, described core layer mixes fluorine and chlorine, and the doping content of fluorine and chlorine controls at≤50-500ppm; Described covering comprises inner cladding from inside to outside successively, sink covering and surrounding layer; Described sagging covering is made for mixing fluorine-based bottom tube, and described surrounding layer is made for mixing the pure quartz socket tube of fluorine; Described core layer, described inner cladding adopt fluorine-doped quartz pipe to be once prepared from by PCVD technique, and carry out online RIC wire drawing after then assembling with low-refraction sleeve column, wherein, described core layer is fluorine, chlorine co-doped; Described covering is with C
2f
6or SiF
6as mixing fluorine raw material, at described fluorine-doped quartz inside pipe wall gas-phase reaction deposition fluorine-doped quartz layer, successively form described inner cladding, described sagging covering and described surrounding layer successively.
2. the manufacture method of optical fiber according to claim 1, is characterized in that: described core layer radius r
1be 5 ~ 7um.
3. the manufacture method of optical fiber according to claim 1, is characterized in that: described inner cladding diameter r
2be 7 ~ 20um.
4. the manufacture method of optical fiber according to claim 1, is characterized in that: described sagging cladding radius r
3be 12 ~ 40um.
5. the manufacture method of optical fiber according to claim 1, is characterized in that: described surrounding layer radius r
4be 62.5 ± 0.5um.
6. the manufacture method of optical fiber according to claim 1, is characterized in that: the material of described core layer and the material at high temperature viscosity coupling of described covering: the viscosity of material of described core layer and the viscosity of material of described covering are at 2000 DEG C of high temperature; The viscosity ratio range of the viscosity of material of described core layer and the viscosity of material of described covering is 1 ~ 1.5.
7. the manufacture method of optical fiber according to claim 6, is characterized in that: the viscosity ratio range of the viscosity of material of described core layer and the viscosity of material of described covering is 1 ~ 1.3.
8. the manufacture method of optical fiber according to claim 1, is characterized in that: the scattering coefficient α≤0.85db/km.um^4 of described optical fiber.
9. the manufacture method of optical fiber according to claim 1, is characterized in that: described optical fiber is 110 ~ 150um^2 at the useful area at 1550nm wavelength place, at the pad value≤0.180db/km at 1550nm wavelength place.
10. the manufacture method of optical fiber according to claim 1, is characterized in that: the cable cut-off wavelength≤1530nm of described optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487664.5A CN104261670A (en) | 2014-09-22 | 2014-09-22 | Method for manufacturing optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410487664.5A CN104261670A (en) | 2014-09-22 | 2014-09-22 | Method for manufacturing optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104261670A true CN104261670A (en) | 2015-01-07 |
Family
ID=52153295
Family Applications (1)
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|---|---|---|---|
| CN201410487664.5A Pending CN104261670A (en) | 2014-09-22 | 2014-09-22 | Method for manufacturing optical fiber |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223645A (en) * | 2015-11-03 | 2016-01-06 | 江苏亨通光电股份有限公司 | A kind of low loss fiber and preparation method thereof |
| CN106495463A (en) * | 2016-10-11 | 2017-03-15 | 中国科学院上海光学精密机械研究所 | The composite fiber preparation method that covering made by core material quartz made by optical crystal and pottery |
| CN112086850A (en) * | 2020-08-17 | 2020-12-15 | 江苏永鼎光纤科技有限公司 | Inner cladding chlorine-doped three-clad quartz optical fiber |
| CN112679087A (en) * | 2020-12-25 | 2021-04-20 | 中国建筑材料科学研究总院有限公司 | Optical fiber panel and preparation method and application thereof |
| CN113917609A (en) * | 2021-10-12 | 2022-01-11 | 桂林电子科技大学 | Large-core-diameter coaxial double-waveguide optical fiber fan-in fan-out device for reflection spectrum measurement |
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| US7903918B1 (en) * | 2010-02-22 | 2011-03-08 | Corning Incorporated | Large numerical aperture bend resistant multimode optical fiber |
| CN103323908A (en) * | 2013-06-19 | 2013-09-25 | 长飞光纤光缆有限公司 | Single mode fiber and manufacturing method thereof |
| CN103543491A (en) * | 2013-11-08 | 2014-01-29 | 烽火通信科技股份有限公司 | Ultralow-loss high-bandwidth irradiation-resistance multimode fiber and manufacturing method thereof |
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| CN101281275A (en) * | 2007-04-06 | 2008-10-08 | 德雷卡通信技术公司 | Transmission optical fiber having large effective area |
| US7903918B1 (en) * | 2010-02-22 | 2011-03-08 | Corning Incorporated | Large numerical aperture bend resistant multimode optical fiber |
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| CN103543491A (en) * | 2013-11-08 | 2014-01-29 | 烽火通信科技股份有限公司 | Ultralow-loss high-bandwidth irradiation-resistance multimode fiber and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223645A (en) * | 2015-11-03 | 2016-01-06 | 江苏亨通光电股份有限公司 | A kind of low loss fiber and preparation method thereof |
| CN106495463A (en) * | 2016-10-11 | 2017-03-15 | 中国科学院上海光学精密机械研究所 | The composite fiber preparation method that covering made by core material quartz made by optical crystal and pottery |
| CN106495463B (en) * | 2016-10-11 | 2019-12-20 | 中国科学院上海光学精密机械研究所 | Method for preparing composite optical fiber with optical crystal or ceramic as core material and quartz as cladding |
| CN112086850A (en) * | 2020-08-17 | 2020-12-15 | 江苏永鼎光纤科技有限公司 | Inner cladding chlorine-doped three-clad quartz optical fiber |
| CN112679087A (en) * | 2020-12-25 | 2021-04-20 | 中国建筑材料科学研究总院有限公司 | Optical fiber panel and preparation method and application thereof |
| CN113917609A (en) * | 2021-10-12 | 2022-01-11 | 桂林电子科技大学 | Large-core-diameter coaxial double-waveguide optical fiber fan-in fan-out device for reflection spectrum measurement |
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Application publication date: 20150107 |