CN104459876B - Single-mode optical fiber with ultralow attenuation and large effective area - Google Patents
Single-mode optical fiber with ultralow attenuation and large effective area Download PDFInfo
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- CN104459876B CN104459876B CN201410759087.0A CN201410759087A CN104459876B CN 104459876 B CN104459876 B CN 104459876B CN 201410759087 A CN201410759087 A CN 201410759087A CN 104459876 B CN104459876 B CN 104459876B
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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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
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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
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
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- Optics & Photonics (AREA)
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Abstract
The invention relates to a single-mode optical fiber with ultralow attenuation and a large effective area. The single-mode optical fiber comprises a core layer and a wrapping layer and is characterized in that the core layer comprises a sinking core layer body and an outer core layer body from center to outside; the wrapping layer comprises an inner wrapping layer body, a sinking inner wrapping layer body, an auxiliary outer wrapping layer body and an outer wrapping layer body from inside to outside; the radius R1 of the sinking core layer body ranges from 1.5 Mum to 4 Mum, and the relative refractivity ranges from minus 0.10% to 0.02%; the radius R2 of the outer core layer body ranges from 4.5 Mum to 6.5 Mum, and the relative refractivity ranges from minus 0.08% to 0.10%; the radius R3 of the inner wrapping layer body ranges from 9 Mum to 15 Mum, and the relative refractivity ranges from minus 0.25% to minus 0.1%; the radius R4 of the sinking inner wrapping layer body ranges from 12 Mum to 20 Mum, and the relative refractivity ranges from minus 0.6% to minus 0.25%; the radius R5 of the auxiliary inner wrapping layer body ranges from 35 Mum to 50 Mum, and the relative refractivity ranges from minus 0.45% to minus 0.15%; the outer wrapping layer body is a pure silicon dioxide glass layer. The single-mode optical fiber has the large effective area and good bending loss and chromatic dispersion performance, the cabling cutoff wavelength is smaller than 1530 nm, and the production cost is low.
Description
Technical field
The present invention relates to fiber-optic transfer field, and in particular to a kind of single-mode fiber with ultralow attenuation large effective area,
For long range, Large Copacity, high rate communication Transmission system.
Background technology
With the appearance of coherent transfer technology, in fiber-optic transfer field, over long distances, Large Copacity and two-forty are passed for original restriction
Some defeated important indicators have no longer become restriction, the dispersion in following Transmission system（CD）And polarization mode dispersion（PMD）
Index further can relax.But the decay of optical fiber and effective area still become the important of restriction optical communication technology development
Problem.
Especially in the Transmission system of following 400G or higher, the reduction of decay is greatly reduced building for whole system
And if maintenance cost.By taking 400G systems as an example, if the 1550nm attenuation quotients of optical fiber are reduced to 0.18dB/km, by across
The increase of section transmission range, it is possible to reduce 20% regeneration base station;If further optical fiber attenuation reduces 0.16dB/km, can be with
Reduce by 40% or so regeneration base station.In the same manner, if by the effective area of increase optical fiber to 100um2Or it is higher, suppressing light
The condition of fine nonlinear effect, pump power is improved, and is reached with reduction optical fiber attenuation to 0.16dB/km same effect.
Therefore, exploitation is designed and manufactures a kind of ultralow attenuation large effective area optical fiber and becomes an important topic of optical fiber fabrication arts.
The main technique for preparing ultralow attenuating fiber at present is designed using pure silicon core, and this design does not have due to sandwich layer
Ge adulterates, it is possible to obtain low-down rayleigh scattering coefficient, so as to obtain the optical fiber attenuation of reduction.
And large effective area is obtained, from fibre profile design angle, main method is just to increase sandwich layer diameter and reduction
Fiber core layer refractive index.Because ultralow attenuating fiber adopts pure silicon core technique, the side of the refractive index of optical fiber is further reduced
There is restriction in method；Although and the core diameter of simple increase optical fiber can obtain larger effective area, will also result in optical fiber
Cutoff wavelength increase sharply, so as to cause optical fiber exceed index of correlation.Under traditional large effective area fiber is all adopted
Sunken auxiliary design method, sandwich layer are rectangular configuration, and the Energy distribution of such optical fiber is essentially Gauss distribution, if by specific
Sandwich layer is designed, and Energy distribution form is changed, is changed into non-gaussian distribution, then can effectively be increased fibre-optic mode field diameter, so as to
Improve the effective area of optical fiber.
Document US2010022533 proposes a kind of design of large effective area fiber, in order to obtain lower Rayleigh system
Number, which adopts the design of pure silicon core, does not carry out being co-doped with for germanium and fluorine in the core, and which is designed with the titanium dioxide of fluorine doped
Silicon is used as surrounding layer.For the design of this pure silicon core, which requires that inside of optical fibre must carry out the viscosity matching of complexity, and requires
Extremely low speed is adopted in drawing process, it is to avoid high-speed wire-drawing causes the decay that the defect of inside of optical fibre causes to increase, manufacture
Technique is extremely complex.
Document CN10232392 A describe a kind of optical fiber with more large effective area.The invention optical fiber it is effective
Although area has reached 150 um2More than, but because employ the sandwich layer design that conventional germanium fluorine is co-doped with mode, and by sacrificial
What the performance indications of domestic animal cutoff wavelength and decay were realized.Which allows cable cut-off wavelength in more than 1450nm, in its reality
Apply in example, cabled cutoff wavelength has been even up to more than 1800nm.In the middle of practical application, too high cutoff wavelength is difficult to ensure that
Optical fiber is ended in application band, just cannot ensure optical signal in transmission in single mode.Therefore, the type optical fiber is being answered
A series of practical problems may be faced with.Additionally, in embodiment cited by the invention, sink cladding outer diameter r3It is minimum
16.3um, it is equally bigger than normal.The invention does not have can be in optical fiber parameter（Such as, effective area, cutoff wavelength etc.）With optical fiber system
Optimum combination is obtained in causing this.
Document CN103257393A describes a kind of central core position the low attenuation optical fiber of sagging layer.Described in the invention
Although the effective area of optical fiber has reached 150 um2More than, decay is less than or equal to 0.175dB/km.But because employ routine
The design of fluorine surrounding layer, sandwich layer is still larger relative to fluorine surrounding layer viscosity, and defect is still easily produced in drawing process, limits
The further reduction of optical fiber attenuation performance, in addition using fluorine outsourcing Rotating fields, as Fluorin doped is relatively costly, and viscosity is very
Low, in the preparation and drawing process of preform, relative to pure silicon dioxide, surrounding layer prefabricated rods preparation technology is more multiple
Miscellaneous, technology controlling and process progress is higher, and cost is also higher, is not easy to prepare large size prefabricated rod reduces cost.
It is below the definition of some terms that is related in the present invention and explanation：
Refractive index contrast refractivity：Start to count from fiber core axis, according to the change of refractive index, be defined as
That layer near axis is core layer, and the outermost layer of optical fiber is that pure silicon dioxide layer is defined as optical fiber jacket.
Wherein, the distance between E is the electric field relevant with propagation, and r is axle center to Electric Field Distribution point.
Cable cut-off wavelength λcc：
Defined in IEC (International Electrotechnical Commission) standard 60793-1-44：Cable cut-off wavelength λccIt is optical signal in optical fiber
In have propagated 22 meters and be not re-used as the wavelength propagated by single mode signal afterwards.Test when need to by optical fiber around a radius
The circle of 14cm, the circle of two radius 4cm is obtaining data.
The content of the invention
It is big that the technical problem to be solved is intended to a kind of ultralow decay with relatively low fiber manufacturing cost of design
The single-mode fiber of effective area, its cabled cutoff wavelength are less than 1530nm, and have preferable bending loss, dispersion.
The present invention by solve the problems, such as the technical scheme for adopting set forth above for：Including sandwich layer and covering, its feature exists
Outwards include sink sandwich layer and outer sandwich layer from center in described sandwich layer, described covering includes inner cladding from inside to outside, sink
Inner cladding, auxiliary surrounding layer and surrounding layer, wherein, described sagging core radius R1For 1.5 ~ 4 μm, refractive index contrast
For -0.10% ~ 0.02%, described outer core radius R2For 4.5 ~ 6.5 μm, refractive index contrastFor -0.08% ~ 0.10%, institute
The inner cladding diameter R for stating3For 9 ~ 15 μm, refractive index contrastFor -0.25% ~ -0.1%, described sagging inner cladding diameter R4
For 12 ~ 20 μm, refractive index contrastFor -0.6% ~ -0.25%, described auxiliary inner cladding diameter R5It is for 35 ~ 50 μm, relative to roll over
Penetrate rate poorFor -0.45% ~ -0.15%, described surrounding layer is pure silicon dioxide glassy layer.
By such scheme, described surrounding layer radius R6For 62.5 μm.
By such scheme, described sagging sandwich layer is the silica glass layer that germanium fluorine is co-doped with, wherein the doping contribution of germanium
Measure as 0.02% ~ 0.10%
By such scheme, the optical fiber is 110 ~ 150 μm in the effective area of 1550nm wavelength2。
By such scheme, the cabled cutoff wavelength of the optical fiber is equal to or less than 1530nm.
By such scheme, attenuation of the optical fiber at wavelength 1550nm is equal to or less than 0.180dB/km；Optimum condition
It is equal to or less than down 0.170dB/km.
By such scheme, microbending loss of the optical fiber at wavelength 1700nm is equal to or less than 5dB/km.
The beneficial effects of the present invention is：1st, using the sandwich layer design for mixing germanium, reasonably devise the viscosity of inside of optical fibre
Matching, reduces defect in fiber preparation, reduces the attenuation quotient of optical fiber；2nd, the structure being sunk using central core, makes light
Fine internal energy distribution is changed into non-gaussian distribution from Gauss distribution, so as on the basis for ensureing fiber cut off wavelength and dispersion parameters
On, it is effectively increased the effective area of optical fiber；3rd, the sagging structure of rational Fluorin doped is devised, and by each fibre core of optical fiber
The appropriate design of layer section, makes optical fiber have equal to or more than 110 μm2Effective area, under preferable parameter area, Ke Yida
To equal to or more than 130 μm2Effective area；4th, the comprehensive performance parameter such as cutoff wavelength of the invention, bending loss, dispersion exists
Application band is good, sufficiently small cabled cutoff wavelength, to ensure that the type optical fiber transmits the list of optical signal in application in C-band
Mould state, wider sagging cladding structure have preferable improvement effect to the bending loss of optical fiber；5th, outermost surrounding layer
Structure employs the design of pure silicon dioxide, reduces Fluorin doped glass proportion in a fiber, so as to reduce fiber manufacturing life
Produce cost.
Description of the drawings
The refractive index profile structure distribution figure of Fig. 1 one embodiment of the invention.
Specific embodiment
Describe the present invention with reference to embodiments.
Including sandwich layer and covering, described sandwich layer outwards includes sink sandwich layer and outer sandwich layer from center, described covering from
It is interior that to inner cladding is included outward, sink inner cladding, aids in surrounding layer and surrounding layer, wherein, described sagging core radius are R1, phase
Refractive index difference is, described outer core radius are R2, refractive index contrast is, described inner cladding diameter is R3, phase
Refractive index difference is, described sagging inner cladding diameter is R4, refractive index contrast is, described auxiliary inner cladding is partly
Footpath is R5, refractive index contrast is, described surrounding layer is pure silicon dioxide glassy layer, surrounding layer radius R6For 62.5 μm.
The refractive index profile parameter of one the be classified as preferred embodiment of the invention of table, wherein Δ Ge are the doping of Ge in sandwich layer
Amount.Table two is the light-transfer characteristic described in table one corresponding to optical fiber.
The fibre profile parameter of the table one, embodiment of the present invention
The optical fiber parameter of the table two, embodiment of the present invention
Claims (7)
1. a kind of single-mode fiber of ultralow attenuation large effective area, including sandwich layer and covering, it is characterised in that including sandwich layer and bag
Layer, it is characterised in that described sandwich layer outwards includes sink sandwich layer and outer sandwich layer from center, described covering includes from inside to outside
Inner cladding, sink inner cladding, aids in surrounding layer and surrounding layer, wherein, described sagging core radius R1For 1.5～4 μm, relatively
Refractive indices1For -0.10%～0.02%, described outer core radius R2For 4.5～6.5 μm, refractive index contrast Δ2For-
0.08%～0.10%, described inner cladding diameter R3For 9～15 μm, refractive index contrast Δ3For -0.25%～-0.1%, institute
The sagging inner cladding diameter R for stating4For 12～20 μm, refractive index contrast Δ4For -0.6%～-0.25%, bag in described auxiliary
Layer radius R5For 35～50 μm, refractive index contrast Δ5For -0.45%～-0.15%, described surrounding layer is pure silicon dioxide
Glassy layer.
2. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1, it is characterised in that described surrounding layer half
Footpath R6For 62.5 μm.
3. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1 or 2, it is characterised in that described sagging core
The silica glass layer that layer is co-doped with for germanium fluorine, wherein the doping contribution amount Δ of germaniumGeFor 0.02%～0.10%, fiber core layer Ge
The contribution amount of doping is defined asWherein nGeDo not have other to adulterate for fiber glass part, by Ge
The refractive index that doping causes is raised, and ncFor the refractive index of cladding index, i.e. pure silicon dioxide.
4. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1 or 2, it is characterised in that the optical fiber exists
The effective area of 1550nm wavelength is 110～150 μm2。
5. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1 or 2, it is characterised in that the optical fiber into
Cable cutoff wavelength is equal to or less than 1530nm.
6. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1 or 2, it is characterised in that the optical fiber is in ripple
Attenuation at long 1550nm is equal to or less than 0.180dB/km.
7. the single-mode fiber of the ultralow attenuation large effective area as described in claim 1 or 2, it is characterised in that the optical fiber is in ripple
Microbending loss at long 1700nm is equal to or less than 5dB/km.
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| CN201410759087.0A CN104459876B (en) | 2014-12-12 | 2014-12-12 | Single-mode optical fiber with ultralow attenuation and large effective area |
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| CN201410759087.0A CN104459876B (en) | 2014-12-12 | 2014-12-12 | Single-mode optical fiber with ultralow attenuation and large effective area |
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| CN104459876A CN104459876A (en) | 2015-03-25 |
| CN104459876B true CN104459876B (en) | 2017-04-12 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777551B (en) * | 2015-04-28 | 2018-03-16 | 长飞光纤光缆股份有限公司 | A kind of single-mode fiber of low attenuation large effective area |
| CN104749691B (en) * | 2015-04-28 | 2018-05-01 | 长飞光纤光缆股份有限公司 | A kind of ultralow attenuation bend-insensitive single-mode optical fiber |
| CN104765098B (en) * | 2015-04-28 | 2018-03-16 | 长飞光纤光缆股份有限公司 | A kind of single-mode fiber having compared with lower attenuation coefficient |
| CN104777553B (en) * | 2015-04-28 | 2017-12-29 | 长飞光纤光缆股份有限公司 | A kind of ultralow decay single-mode fiber |
| CN106338793B (en) * | 2016-10-20 | 2020-06-16 | 长飞光纤光缆股份有限公司 | Few-mode optical fiber |
| WO2018140278A1 (en) * | 2017-01-24 | 2018-08-02 | Corning Incorporated | Optical fibers and optical systems comprising the same |
| CN108680990A (en) * | 2018-04-25 | 2018-10-19 | 烽火通信科技股份有限公司 | A kind of low crosstalk orbital angular momentum Transmission Fibers and its manufacturing method |
| CN108469648B (en) * | 2018-05-14 | 2020-05-05 | 烽火通信科技股份有限公司 | Ultralow-loss large-effective-area single-mode fiber and manufacturing method thereof |
| CN109683233A (en) * | 2019-02-26 | 2019-04-26 | 长飞光纤光缆股份有限公司 | A kind of single mode optical fiber with ultralow attenuation large effective area |
| CN110045456B (en) * | 2019-03-01 | 2020-10-27 | 江苏永鼎股份有限公司 | Single-mode optical fiber with ultralow loss and large effective area and preparation method thereof |
| CN111694088B (en) * | 2019-09-29 | 2022-06-14 | 法尔胜泓昇集团有限公司 | Single-mode optical fiber and preparation method thereof |
| CN115047559B (en) * | 2022-06-15 | 2023-04-21 | 烽火通信科技股份有限公司 | Multiband attenuation flat optical fiber |
| CN116880003B (en) * | 2023-09-06 | 2023-12-15 | 江苏亨通光纤科技有限公司 | Anti-radiation ultra-low loss single mode fiber with double-mesa waveguide guide structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005195921A (en) * | 2004-01-08 | 2005-07-21 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber |
| CN1278150C (en) * | 2003-05-12 | 2006-10-04 | 菲特尔美国公司 | Super-large-effective-area (SLA) optical fiber and communication system incorporating the same |
| CN102043196A (en) * | 2009-10-13 | 2011-05-04 | 德雷卡通信技术公司 | Single mode optical fiber with depressed trench |
| CN102933996A (en) * | 2009-09-11 | 2013-02-13 | 康宁股份有限公司 | Low bend loss optical fiber |
| CN103380389A (en) * | 2010-12-23 | 2013-10-30 | 普睿司曼股份公司 | Low macrobending loss single-mode optical fibre |
-
2014
- 2014-12-12 CN CN201410759087.0A patent/CN104459876B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1278150C (en) * | 2003-05-12 | 2006-10-04 | 菲特尔美国公司 | Super-large-effective-area (SLA) optical fiber and communication system incorporating the same |
| JP2005195921A (en) * | 2004-01-08 | 2005-07-21 | Nippon Telegr & Teleph Corp <Ntt> | Single mode optical fiber |
| CN102933996A (en) * | 2009-09-11 | 2013-02-13 | 康宁股份有限公司 | Low bend loss optical fiber |
| CN102043196A (en) * | 2009-10-13 | 2011-05-04 | 德雷卡通信技术公司 | Single mode optical fiber with depressed trench |
| CN103380389A (en) * | 2010-12-23 | 2013-10-30 | 普睿司曼股份公司 | Low macrobending loss single-mode optical fibre |
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