CN106371167A - High-bandwidth multi-mode fiber - Google Patents
High-bandwidth multi-mode fiber Download PDFInfo
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- CN106371167A CN106371167A CN201611070307.4A CN201611070307A CN106371167A CN 106371167 A CN106371167 A CN 106371167A CN 201611070307 A CN201611070307 A CN 201611070307A CN 106371167 A CN106371167 A CN 106371167A
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- sandwich layer
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- mode fiber
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- 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
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
-
- 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
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0288—Multimode fibre, e.g. graded index core for compensating modal dispersion
-
- 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
- G02B6/03638—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 3 layers only
- G02B6/03644—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 3 layers only arranged - + -
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention relates to a high-bandwidth multi-mode fiber which comprises a core layer and a wrapping layer surrounding the core layer. The High-bandwidth multi-mode fiber is characterized in that a refractive index profile of the core layer is parabolic, the distribution index alpha ranges from 1.9 to 2.2, the radius R1 of the core layer ranges from 23 to 27 micron, the maximal relative refractive index difference delta1 of the central position of the core layer ranges from 0.9% to 1.2%, the wrapping layer comprises an inner wrapping layer, a recessed wrapping layer and an outer wrapping layer from inside to outside successively, the radius of the inner wrapping layer is R2, the single-side radial width (R2-R1) ranges from 1 to 3 micron, the relative refractive index difference delta2 ranges from -0.05 to 0.05%, the radius of the recessed wrapping layer is R3, the single-side radial width (R3-R2) ranges from 4 to 8 micron, the relative refractive index difference delta3 ranges from 0.7 to -0.3%, and the outer wrapping layer is a pure silica glass layer. According to the invention, the bandwidth performance of the fiber is further improved via special material component design and waveguide structure optimized design of the core layer of the fiber.
Description
Technical field
The present invention relates to a kind of multimode fibre with high bandwidth performance, belong to technical field of photo communication.
Background technology
Multimode fibre is with its less expensive system cost advantage, and is easy to the feature continuing, in short-distance transmission network
Widely use, such as in lan LAN.With the continuous growth to network capacity requirements for the user, high-property transmission network is to multimode
Bandwidth of an optical fiber proposes higher requirement.
In order to obtain the high-bandwidth multi-mode fiber with good stability, Refractive Index Profile of Optical, especially core refractive
Rate section must be with anticipated shape accurately mate.Generally the sandwich layer design in preform mixes certain density germanium to realize
The index distribution of desired fiber core layer.But preform is after high-temperature fusion draws and is cooled to optical fiber, in light
Under the influence of fine internal residual stress, index distribution can be distorted.Thus manage to reduce remaining answering in optical fiber production process
The impact of power refractive index distribution is critically important.In glass network structure, dopant such as germanium, fluorine, chlorine plasma are formed with network
Presented in body, intermediate or modified body, destroy the globality of legacy network structure, the viscous of glass can be reduced at high temperature
Degree.Dopant ion concentration directly affects the high temperature viscosity of optical fiber.The amount of multimode fibre sandwich layer center doped germanium is more than sandwich layer edge
The high temperature viscosity mismatch mixed germanium amount, lead to fiber optic materials component, exacerbate the formation of fiber core layer residual stress.
Chinese patent cn102654602 describes a kind of single-mode optics by method in pipe or the outer method alkali doped of pipe
Fibre, reduces optical fiber attenuation by the control of sandwich layer and clad doped component and doping content difference.Patent cn 103030269 carries
Go out the technique being combined with ovd and vad and prepare the multimode fibre mixing chlorine, but do not relate to fluorine doped and specific dopant
Concentration value.
Content of the invention
The technical problem to be solved is to provide a kind of core material for the deficiency that above-mentioned prior art exists
Rationally, structural design optimization is it is easy to the high-bandwidth multi-mode fiber of technology controlling and process for coupling.
The core refractive rate section of multimode graded-index optical fiber meets following power exponential function and is distributed:
Wherein, n1Refractive index for optical fiber axle center;R is the distance leaving optical fiber axle center;A is optical fiber core radius;α is distribution
Index;δ0Refractive index for core centre opposed cladding layers.
Relative index of refraction is δi:
δi%=[(ni 2-n0 2)/2ni 2] × 100%,
Wherein, niIt is the refractive index apart from core centre i position;n0For the minimum refractive index of fiber core layer, generally also light
The refractive index of fine covering.
The present invention by solving the problems, such as adopted technical scheme set forth above is: includes sandwich layer and the bag around sandwich layer
It is characterised in that described core refractive rate section parabolically shape, profile exponent α is 1.9~2.2 to layer, the radius r1 of sandwich layer
For 23~27 μm, sandwich layer centre bit maximum relative refractive index difference δ 1 is 0.9%~1.2%, and described covering is from inside to outside successively
For inner cladding, sink covering and surrounding layer, and the radius of described inner cladding is r2, and monolateral radial width (r2-r1) is 1~3 μm,
Refractive index contrast δ 2 is -0.05~0.05%;The radius of described sagging covering is r3, and monolateral radial width (r3-r2) is
4~8 μm, refractive index contrast δ 3 is -0.7~-0.3%;Described surrounding layer is pure silicon dioxide glassy layer.
The silica glass layer being co-doped with for germanium fluorine chlorine ge/f/cl by such scheme, described sandwich layer, wherein, in sandwich layer
Ge-doped amount is successively decreased along radial direction by mass, and Fluorin doped amount is incremented by or impartial, chlorine doping along radial direction by mass
It is incremented by or impartial along radial direction by mass.
By such scheme, doping c when sandwich layer margin location doping when described Fluorin doped amount is incremented by or equalizationf2For
3000~20000ppm, more excellent for 5000~12300ppm.
By such scheme, sandwich layer margin location Fluorin doped amount c when described Fluorin doped amount is incremented byf2Mix with sandwich layer centre bit fluorine
Miscellaneous amount cf1Ratio cf2/cf1For 5~40.
By such scheme, doping c when sandwich layer margin location doping when described chlorine doping is incremented by or equalizationcl2
For 200~8000ppm, more excellent for 1000~6000ppm.
By such scheme, sandwich layer margin location chlorine doping c when described chlorine doping is incremented bycl2With sandwich layer centre bit chlorine
Doping ccl1Ratio ccl2/ccl1For 1.5~15.
By such scheme, c in described sandwich layerf2+ccl2More than 6000ppm, more excellent for 8000~15000ppm.
By such scheme, the numerical aperture of described optical fiber is 0.185~0.215.
By such scheme, described optical fiber has 3500mhz-km or 3500mhz-km band above in 850nm wavelength,
950nm wavelength has 1850mhz-km or 1850mhz-km band above, 1300nm wavelength have 500mhz-km or
500mhz-km band above.
By such scheme, described optical fiber has effective mould of 4700mhz-km or more than 4700mhz-km in 850nm wavelength
Formula bandwidth (emb), has the effective model bandwidth (emb) of 2470mhz-km or more than 2470mhz-km in 953nm wavelength.
By such scheme, described optical fiber, at 850nm wavelength, is added with the bending that 7.5 millimeters of bending radius lead to around 2 circles
Loss is less than 0.2db;At 1300nm wavelength, it is less than with the bending added losses that 7.5 millimeters of bending radius lead to around 2 circles
0.5db.
The technical scheme of methods for optical fiber manufacture of the present invention is: using pure quartz glass tube as substrate bushing pipe, using pcvd
Or mcvd technique prepares sandwich layer;In reacting gas Silicon chloride. (sicl4) and oxygen (o2) in, it is passed through germanium tetrachloride (gecl4) enter
Row is Ge-doped, is passed through fluoro-gas and carries out fluorine (f) doping, is passed through chloride gas and carries out chlorine (cl) doping, by microwave or hydrogen
The heating sources such as oxygen flame promote the mixed gas in bushing pipe that chemical reaction occurs, and are finally deposited in bushing pipe in the form of glass
Wall;During being somebody's turn to do, in control bushing pipe, mixture pressure is in 10~18mbar;Doping according to described fibre-optic waveguide structure will
Ask, successively change the flow of each component gas and reaction condition parameter in mixed gas, successively sink to center from the edge of sandwich layer
Long-pending;After the completion of deposition, with electric furnace, post-depositional bushing pipe collapsing is become solid mandrel;Using the pipe external sediment work such as ovd or vad
Skill is sequentially depositing out fluorine-containing sagging covering and pure quartz glass surrounding layer, prepared prefabricated rods;Or with fluorine doped glass pipe as sleeve pipe,
Carry out secondary collapsing with solid mandrel, gained solid bar is combined into rit (rod in pure quartz glass trocar sheath again after combining
Tube) prefabricated rods;Prefabricated rods are placed on fiber drawing tower and are drawn into optical fiber, two-layer ultra-violet curing inside and outside optical fiber surface coating
Polypropylene acid resin.
Another technical scheme of methods for optical fiber manufacture of the present invention is: using pure quartz glass tube as substrate bushing pipe, makes
Prepare sandwich layer, inner cladding and sagging covering with pcvd or mcvd technique;In reacting gas Silicon chloride. (sicl4) and oxygen (o2)
In, it is passed through fluoro-gas and carries out fluorine (f) doping, first in the sagging covering of bushing pipe inwall deposition fluorine doped;Redeposited inner cladding;Again to
It is passed through germanium tetrachloride (gecl in reacting gas4), carry out Ge-doped, be passed through fluoro-gas and carry out fluorine (f) doping, be passed through chloride
Gas carries out chlorine (cl) doping, goes out sandwich layer from edge to the center layer by layer deposition of sandwich layer;During being somebody's turn to do, control gaseous mixture in bushing pipe
Body pressure is in 10~18mbar;Doping according to described fibre-optic waveguide structure requires, and successively changes each component gas in mixed gas
The flow of body and reaction condition parameter;After the completion of deposition, with electric furnace, post-depositional bushing pipe collapsing is become solid mandrel;With pure
Quartz glass is obtained rit prefabricated rods for sleeve pipe;Prefabricated rods are placed on fiber drawing tower and are drawn into optical fiber, in optical fiber surface coating
The polypropylene acid resin of inside and outside two-layer ultra-violet curing.
The beneficial effects of the present invention is: 1, pass through the special material design of components of fiber core layer, common using germanium, fluorine, chlorine
The mode mixed, improves total doping content of sandwich layer edge fluorine and chlorine so as to be higher than the fluorine of sandwich layer core, chlorine doping content,
Core material high temperature viscosity is tried one's best mate, can reduce between sandwich layer marginal portion and core in terms of glass viscosity
Difference so that the fiber core layer residual stress during prefabricated stick drawn wire is reduced, make the folding of fiber core layer gradation type
Penetrate that rate distribution is precisely controlled, core refractive rate section and anticipated shape accurately mate, thus realize fiber bandwidth performance
Lifting.2nd, pass through sedimentation such as pcvd and mcvd preparation technology in pipe and just can preferably realize the distribution of core refractive rate and dopant
Component and the precise control of concentration.3rd, appropriate design waveguiding structure, waveguiding structure is further optimized, and so that bandwidth performance is entered
One step improves.
Brief description
Fig. 1 is the refractive index profile schematic diagram of one embodiment of the invention.
Fig. 2 is a kind of doping component distribution schematic diagram of fiber core layer of the present invention.
Fig. 3 is another kind of doping component distribution schematic diagram of fiber core layer of the present invention.
Fig. 4 is the third doping component distribution schematic diagram of fiber core layer of the present invention.
Fig. 5 is a kind of doping component distribution schematic diagram of comparative example fiber core layer.
Specific embodiment
The present invention includes sandwich layer and the covering around sandwich layer, described core refractive rate section parabolically shape, and distribution refers to
Number is α, and the radius of sandwich layer is r1, and sandwich layer centre bit maximum relative refractive index difference is δ 1;Described covering is followed successively by from inside to outside
Inner cladding, sagging covering and surrounding layer, the radius of described inner cladding is r2, and monolateral radial width is (r2-r1), relative
Rate difference is δ 2;The radius of described sagging covering is r3, and monolateral radial width is (r3-r2), and refractive index contrast is δ 3;Institute
The surrounding layer stated is pure silicon dioxide glassy layer.The silica glass layer that described sandwich layer is co-doped with for germanium fluorine chlorine ge/f/cl, its
In, in sandwich layer, Ge-doped amount is successively decreased along radial direction by mass, and Fluorin doped amount is incremented by or impartial along radial direction by mass,
Chlorine doping is incremented by or impartial along radial direction by mass.
3 embodiments and 1 comparative example are given below, the present invention is further illustrated.Embodiment and comparative example light
The core structure parameter of fibre, sandwich layer doping content and Specifeca tion speeification are as shown in table 1.
Embodiment 1, fiber optic materials adopt pcvd technique to be obtained, and when starting deposition of core layer, open and control germanium tetrachloride gas
The effusion meter of flow, controls germanium tetrachloride flow to be gradually increased according to specific distribution curve by software.Open two points simultaneously
Not Kong Zhi fluoro-gas and chlorine-containing gas flow effusion meter, from during edge to the center layer by layer deposition of sandwich layer, keep
Chlorine-containing gas flow aperture is constant, and is gradually reduced fluoro-gas flow aperture, and keeps fluoro-gas flow aperture linearly to become
Change.
Embodiment 2, fiber optic materials adopt pcvd technique to be obtained, and when starting deposition of core layer, open and control germanium tetrachloride gas
The effusion meter of flow, controls germanium tetrachloride flow to be gradually increased according to specific distribution curve by software.Open two points simultaneously
Not Kong Zhi fluoro-gas and chlorine-containing gas flow effusion meter, from during edge to the center layer by layer deposition of sandwich layer, keep
Fluoro-gas flow aperture is constant, and is gradually reduced chlorine-containing gas flow aperture, by software control fluoro-gas flow according to
Doping design needs and change.
Embodiment 3, fiber optic materials adopt pcvd technique to be obtained, and when starting deposition of core layer, open and control germanium tetrachloride gas
The effusion meter of flow, controls germanium tetrachloride flow to be gradually increased according to specific distribution curve by software.Open two points simultaneously
Not Kong Zhi fluoro-gas and chlorine-containing gas flow effusion meter, from during edge to the center layer by layer deposition of sandwich layer, gradually
Reduce fluoro-gas flow aperture, be gradually reduced chlorine-containing gas flow aperture, control gas flow to set according to doping by software
Meter needs and change.
Comparative example 1, fiber optic materials adopt mcvd technique to be obtained, and when starting deposition of core layer, open and control germanium tetrachloride gas
The effusion meter of flow, controls germanium tetrachloride flow to be gradually increased according to specific distribution curve by software.Open two points simultaneously
Not Kong Zhi fluoro-gas and chlorine-containing gas flow effusion meter, from during edge to the center layer by layer deposition of sandwich layer, keep
Chlorine-containing gas flow aperture is constant, keeps fluoro-gas flow aperture constant.
Table 1: the core structure parameter of optical fiber, sandwich layer doping content and Specifeca tion speeification
Claims (9)
1. a kind of high-bandwidth multi-mode fiber, including sandwich layer and around sandwich layer covering it is characterised in that described core refractive rate
Section parabolically shape, profile exponent α is 1.9~2.2, and the radius r1 of sandwich layer is 23~27 μm, and sandwich layer centre bit is maximum relatively
Refractivity δ 1 is 0.9%~1.2%, and described covering is followed successively by inner cladding from inside to outside, sink covering and surrounding layer, institute
The radius of the inner cladding stated be r2, monolateral radial width (r2-r1) be 1~3 μm, refractive index contrast δ 2 be -0.05~
0.05%;The radius of described sagging covering is r3, and monolateral radial width (r3-r2) is 4~8 μm, refractive index contrast δ 3
For -0.7~-0.3%;Described surrounding layer is pure silicon dioxide glassy layer.
2. the high-bandwidth multi-mode fiber as described in claim 1 is it is characterised in that described sandwich layer is co-doped with for germanium fluorine chlorine ge/f/cl
Silica glass layer, wherein, in sandwich layer, Ge-doped amount is successively decreased along radial direction by mass, Fluorin doped amount edge by mass
Radial direction is incremented by or impartial, and chlorine doping is incremented by or impartial along radial direction by mass.
3. the high-bandwidth multi-mode fiber as described in claim 2 is it is characterised in that sandwich layer side when described Fluorin doped amount is incremented by
Doping c when edge position doping or equalizationf2For 3000~20000ppm.
4. the high-bandwidth multi-mode fiber as described in claim 3 is it is characterised in that sandwich layer side when described Fluorin doped amount is incremented by
Edge position Fluorin doped amount cf2With sandwich layer centre bit Fluorin doped amount cf1Ratio cf2/cf1For 5~40.
5. the high-bandwidth multi-mode fiber as described in claim 3 is it is characterised in that sandwich layer side when described chlorine doping is incremented by
Doping c when edge position doping or equalizationcl2For 200~8000ppm.
6. the high-bandwidth multi-mode fiber as described in claim 5 is it is characterised in that sandwich layer side when described chlorine doping is incremented by
Edge position chlorine doping ccl2With sandwich layer centre bit chlorine doping ccl1Ratio ccl2/ccl1For 1.5~15.
7. the high-bandwidth multi-mode fiber as described in claim 5 is it is characterised in that c in described sandwich layerf2+ccl2More than 6000ppm.
8. the high-bandwidth multi-mode fiber as described in claim 1 or 2 is it is characterised in that described optical fiber has in 850nm wavelength
3500mhz-km or 3500mhz-km band above, has 1850mhz-km or 1850mhz-km band above in 950nm wavelength,
In 1300nm wavelength, there is 500mhz-km or 500mhz-km band above.
9. the high-bandwidth multi-mode fiber as described in claim 1 or 2 is it is characterised in that described optical fiber has in 850nm wavelength
The effective model bandwidth of 4700mhz-km or more than 4700mhz-km, has 2470mhz-km or 2470mhz- in 953nm wavelength
The effective model bandwidth of more than km.
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107102400A (en) * | 2017-06-28 | 2017-08-29 | 长飞光纤光缆股份有限公司 | A kind of high bandwidth bend-insensitive multimode fibre |
CN107193082A (en) * | 2017-05-04 | 2017-09-22 | 长飞光纤光缆股份有限公司 | A kind of ultralow decay single-mode fiber |
CN107390316A (en) * | 2017-08-11 | 2017-11-24 | 长飞光纤光缆股份有限公司 | Multimode fibre with high bandwidth performance |
CN107479129A (en) * | 2017-08-11 | 2017-12-15 | 长飞光纤光缆股份有限公司 | A kind of high-bandwidth multi-mode fiber |
CN108333671A (en) * | 2018-02-01 | 2018-07-27 | 烽火通信科技股份有限公司 | Anti-bending multimode fiber |
WO2020108141A1 (en) * | 2018-11-30 | 2020-06-04 | 中天科技精密材料有限公司 | Bending-resistant wide band multimode optical fiber |
WO2024119527A1 (en) * | 2022-12-09 | 2024-06-13 | 江苏亨通光纤科技有限公司 | Bend-insensitive high-bandwidth multi-mode optical fiber |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0948629A (en) * | 1995-08-01 | 1997-02-18 | Sumitomo Electric Ind Ltd | Optical fiber and its production |
CN1628080A (en) * | 2001-05-30 | 2005-06-15 | 3M创新有限公司 | Optical waveguide article including a fluorine-containing zone |
CN102243336A (en) * | 2011-07-25 | 2011-11-16 | 长飞光纤光缆有限公司 | Dispersion compensation fiber |
CN103030269A (en) * | 2011-10-05 | 2013-04-10 | 住友电气工业株式会社 | Multi-mode optical fiber |
CN104391351A (en) * | 2014-11-25 | 2015-03-04 | 长飞光纤光缆股份有限公司 | Bending resistant multimode optical fiber |
CN105334569A (en) * | 2015-12-17 | 2016-02-17 | 长飞光纤光缆股份有限公司 | High-bandwidth anti-bending multimode fiber |
-
2016
- 2016-11-26 CN CN201611070307.4A patent/CN106371167A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0948629A (en) * | 1995-08-01 | 1997-02-18 | Sumitomo Electric Ind Ltd | Optical fiber and its production |
CN1628080A (en) * | 2001-05-30 | 2005-06-15 | 3M创新有限公司 | Optical waveguide article including a fluorine-containing zone |
CN102243336A (en) * | 2011-07-25 | 2011-11-16 | 长飞光纤光缆有限公司 | Dispersion compensation fiber |
CN103030269A (en) * | 2011-10-05 | 2013-04-10 | 住友电气工业株式会社 | Multi-mode optical fiber |
CN104391351A (en) * | 2014-11-25 | 2015-03-04 | 长飞光纤光缆股份有限公司 | Bending resistant multimode optical fiber |
CN105334569A (en) * | 2015-12-17 | 2016-02-17 | 长飞光纤光缆股份有限公司 | High-bandwidth anti-bending multimode fiber |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107193082A (en) * | 2017-05-04 | 2017-09-22 | 长飞光纤光缆股份有限公司 | A kind of ultralow decay single-mode fiber |
CN107102400A (en) * | 2017-06-28 | 2017-08-29 | 长飞光纤光缆股份有限公司 | A kind of high bandwidth bend-insensitive multimode fibre |
CN107102400B (en) * | 2017-06-28 | 2020-01-14 | 长飞光纤光缆股份有限公司 | High-bandwidth bending insensitive multimode optical fiber |
CN107390316A (en) * | 2017-08-11 | 2017-11-24 | 长飞光纤光缆股份有限公司 | Multimode fibre with high bandwidth performance |
CN107479129A (en) * | 2017-08-11 | 2017-12-15 | 长飞光纤光缆股份有限公司 | A kind of high-bandwidth multi-mode fiber |
CN108333671A (en) * | 2018-02-01 | 2018-07-27 | 烽火通信科技股份有限公司 | Anti-bending multimode fiber |
WO2019148822A1 (en) * | 2018-02-01 | 2019-08-08 | 烽火通信科技股份有限公司 | Bend-resistant multi-mode optical fiber |
CN108333671B (en) * | 2018-02-01 | 2019-12-03 | 烽火通信科技股份有限公司 | Anti-bending multimode fiber |
WO2020108141A1 (en) * | 2018-11-30 | 2020-06-04 | 中天科技精密材料有限公司 | Bending-resistant wide band multimode optical fiber |
WO2024119527A1 (en) * | 2022-12-09 | 2024-06-13 | 江苏亨通光纤科技有限公司 | Bend-insensitive high-bandwidth multi-mode optical fiber |
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