CN115236813A - Reticular optical fiber ribbon and manufacturing method thereof - Google Patents

Reticular optical fiber ribbon and manufacturing method thereof Download PDF

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Publication number
CN115236813A
CN115236813A CN202210849190.9A CN202210849190A CN115236813A CN 115236813 A CN115236813 A CN 115236813A CN 202210849190 A CN202210849190 A CN 202210849190A CN 115236813 A CN115236813 A CN 115236813A
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optical fiber
resin
fiber ribbon
ribbon
bonding points
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CN202210849190.9A
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CN115236813B (en
Inventor
王小泉
李威
张广平
陈珠海
殷鹏翔
林海龙
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Nanjing Wasin Fujikura Optical Communication Ltd
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Nanjing Wasin Fujikura Optical Communication Ltd
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Priority to PCT/CN2022/110228 priority patent/WO2024016387A1/en
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401Optical cables
    • G02B6/4403Optical cables with ribbon structure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0245Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to a moving work of indefinite length, e.g. to a moving web
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05CAPPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C9/00Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
    • B05C9/04Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D28/00Producing nets or the like, e.g. meshes, lattices
    • B29D28/005Reticulated structure comprising reinforcements of substantial or continuous length
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/448Ribbon cables
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4479Manufacturing methods of optical cables
    • G02B6/4483Injection or filling devices

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

The invention relates to a reticular optical fiber ribbon which comprises a semi-regular structure and a completely irregular structure, wherein the semi-regular structure is formed by combining a plurality of single regular optical fibers together, the semi-regular structure comprises long bonding points and short bonding points, and the long bonding points and the short bonding points are alternately combined to form a reticular structure; the completely irregular structure is formed by a foaming technology, and the glue supply pressure fluctuates to form the completely irregular structure when the bubbles are broken; the individual bonds connecting the optical fiber ribbons in a completely irregular structure are of different sizes and distances. The semi-regular structure of the invention adopts a piezoelectric valve gluing mode to ensure that the cost is lower, adopts a long and short combination mode, has smaller attenuation of the optical fiber ribbon, dots are punched on the front side and the back side of the interval, and reduces the additional attenuation of the optical fiber ribbon; the complete irregular structure is formed by adopting a foaming technology, the additional attenuation is better, the one-step forming is realized, the existing banding process is adopted, and the investment cost is low.

Description

Reticular optical fiber ribbon and manufacturing method thereof
Technical Field
The invention relates to the technical field of optical fiber ribbons, in particular to a reticular optical fiber ribbon and a manufacturing method thereof.
Background
The net wound optical fiber band is a small optical fiber band capable of realizing large core number of optical fiber. In recent years, FTTX has been used in various forms and environments, and there is an increasing demand for optical cables for access networks. The domestic optical cable with large core number and ultra-large core number has more and more demand and more complex and various application environments, so that the optical cable with the optical fiber ribbon has more and more applications. In order to realize the high-density large-core-number optical cable, the reelable reticular optical fiber ribbon can be produced at the same time, compared with the conventional optical fiber ribbon, the optical fiber ribbon has good flexibility, can be used after being reeled without influencing the optical performance of the optical fiber, and can realize the development of the high-density optical cable under the same volume.
From the existing literature and patent search results, the earliest optical fiber ribbon in net shape was proposed by NTT in japan, and successively proposed are sumitomo in japan, and japanese rattan houses basically have a spider-net-like structure, and the structure is a spider-net-like structure having a regular arrangement of net-like structures, which has high requirements for equipment, and a complicated processing environment, resulting in a substantial production cost, and is hardly accepted by the market.
In addition, in the prior art, if the short bonding point mesh optical fiber ribbon is used, the windability performance of the optical fiber ribbon is good, and the additional attenuation of the optical fiber ribbon is small, but if the optical fiber shakes in the point processing process, some bonding points are not firmly bonded, and the phenomenon of loose fibers is easily formed in the production and subsequent processing processes. The use of long bond points altogether results in a more robust ribbon structure, but poor windability and may also increase additional attenuation of the ribbon.
Disclosure of Invention
In view of the above problems, the present invention provides a mesh optical fiber ribbon and a method for manufacturing the same, which has a mesh structure but an arrangement that is not very regular, and thus has better performance and lower processing cost.
A reticular optical fiber ribbon comprises an optical fiber ribbon, wherein the optical fiber ribbon comprises a semi-regular structure and a completely irregular structure, the semi-regular structure is formed by combining a plurality of single regular optical fibers together, the semi-regular structure comprises long bonding points and short bonding points, and the long bonding points and the short bonding points are alternately combined to form a reticular structure; the completely irregular structure is formed by a foaming technology, and the glue supply pressure fluctuates to form the completely irregular structure when the bubbles are broken; the size and distance of each bond point of the optical fiber ribbon connection in the completely irregular structure can be different.
Preferably, the length of the long bond points of the semi-regular structure is in the range of 10mm to 15mm and the length of the short bond points is in the range of 5mm to 13mm.
Preferably, the distance between two adjacent bonding points is 40mm-60mm.
Preferably, the front and back sides of the optical fiber ribbon with interval are dotted and coated with glue.
Preferably, the optical fiber ribbon is coated with resin on the aligned optical fibers by a piezo valve coating method or an intermittent connection optical fiber ribbon coating method.
A manufacturing method of a reticular optical fiber ribbon with complete irregularity adopts a foaming technology, and is characterized by comprising the following steps:
the method comprises the following steps: putting the resin into a 35-degree heat preservation device, filling a certain amount of nitrogen from the bottom of a resin tank according to the calculated foaming degree, and stirring for 10min by using a special stirrer to form the resin with uniform bubbles;
step two: releasing the optical fiber from an optical fiber pay-off rack, arranging the optical fiber according to a set color, and placing the optical fiber into a coating die 1 after static electricity removal;
step three: filling the resin in the resin tank into the coating die 1 by pressure;
step four: after the optical fiber comes out of the coating die 1, the optical fiber passes through the coating die 2, a certain negative pressure is applied to the interior of the coating die 2, bubbles in the resin are removed, and redundant resin is removed to finish optical fiber shaping;
step five: after the optical fiber comes out of the coating die 2, the optical fiber is cured through a UV curing furnace and then taken up to form the optical fiber ribbon.
Preferably, the temperature of the resin in step one is 35 ℃. + -. 1 ℃ and the viscosity orientation of the resin is from 2500mpa.s to 4000mpa.s.
Preferably, the number of cores of the optical fiber in the second step is 8 to 24 cores.
Preferably, the foaming degree of the resin in the third step is 35 to 65 percent.
Preferably, the size of the bubbles within the resin is in the range of 15-18 mm.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
1. the semi-regular structure reticular optical fiber ribbon adopts a piezoelectric valve gluing mode or an intermittent connection optical fiber ribbon coating method, so that the cost can be ensured to be lower;
2. the semi-regular structure reticular optical fiber ribbon adopts a long section of long and short bonding points, adopts a long and short combination mode, and breaks through the mode of the original regular design to ensure that the comprehensive performance of the optical fiber ribbon of the technology is optimal, the attenuation of the optical fiber ribbon is smaller, the bonding points have no cracking phenomenon and the optical fibers cannot be damaged when the bonding points are separated;
3. the optical fiber ribbon is subjected to dotting and gluing on the front side and the back side at intervals, so that the minimum stress received by the optical fiber ribbon can be ensured, and the additional attenuation of the optical fiber ribbon is reduced;
4. the distance between the bonding points is 40mm-60mm, the designed length is comprehensively considered according to the length of the bonding points, the short length affects the additional attenuation of the optical fiber ribbon, and the long length affects the subsequent welding;
5. the completely irregular structure reticular optical fiber is mainly formed by adopting a foaming technology, although the foaming technology which is as stable as possible is adopted, the adhesive supply pressure fluctuates when the bubbles break, and a regular completely regular reticular structure cannot be formed, so that the completely irregular reticular structure can be formed, bonding points connected by the completely irregular structure optical fiber ribbon are different in size and distance, but the bonding points are bonded at intervals by resin formed by the broken resin bubbles, the density of the bonding points is larger, the distance of the bonding points is smaller, the flexibility is better, the stress is smaller compared with a dispensing mode, and the additional attenuation is better;
6. the manufacturing method of the completely irregular structure reticular optical fiber ribbon adopts a foaming technology, and the size of bubbles is 15-8 mm; the method is mainly used for the optical fiber ribbons with large core number, such as 8-core, 12-core, 24-core optical fiber ribbons and the like. The method is formed in one step, adopts the existing banding process and has low input cost.
Drawings
FIG. 1 is a simplified schematic diagram of a semi-regular structured ribbon of mesh fibers of the present invention;
FIG. 2 is a schematic view of a totally irregular structured ribbon of mesh fibers according to the present invention;
fig. 3 is a flow chart of a method for manufacturing a completely irregular structured reticulated optical fiber ribbon in accordance with the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a mesh optical fiber ribbon, including an optical fiber ribbon, the optical fiber ribbon includes a semi-regular structure and a completely irregular structure, the semi-regular structure is formed by combining a plurality of single regular optical fibers, the semi-regular structure includes long bonding points and short bonding points, and the long bonding points and the short bonding points are alternately combined to form a mesh structure; the completely irregular structure is formed by a foaming technology, and the glue supply pressure fluctuates to form the completely irregular structure when the bubbles are broken; the sizes and distances of all bonding points connected by the optical fiber belts in the completely irregular structure can be different, and the density of the bonding points is higher because the bonding points are bonded at intervals by resin formed by the broken resin bubbles. The semi-regular structure reticular optical fiber ribbon can reduce the optical fiber attenuation through experimental tests, the phenomenon of cracking of a plurality of bonding points is avoided, and the optical fiber is not damaged when the bonding points are separated.
Furthermore, the length range of the long bonding points of the semi-regular structure is 10mm-15mm, and the length range of the short bonding points is 5mm-13mm; the method of combining the length and the length is adopted, and the original rule design mode is broken through to ensure that the comprehensive performance of the optical fiber ribbon is optimal.
Further, the distance between two adjacent bonding points is 40mm-60mm; the design length is considered comprehensively according to the length of the bonding points, and the design length is too short to influence the additional attenuation of the optical fiber ribbon and too long to influence the subsequent welding.
Furthermore, the front and back sides of the interval of the optical fiber ribbon are dotted and coated with glue, so that the minimum stress received by the optical fiber ribbon can be ensured, and the additional attenuation of the optical fiber ribbon is reduced.
Furthermore, the optical fiber ribbon is coated with resin on the arranged optical fibers by a piezoelectric valve gluing method or an intermittent connection optical fiber ribbon coating method, so that the cost can be ensured to be lower.
A manufacturing method of a reticular optical fiber ribbon with complete irregularity adopts a foaming technology, and is characterized by comprising the following steps:
the method comprises the following steps: putting the resin into a 35-degree heat preservation device, filling a certain amount of nitrogen from the bottom of a resin tank according to the calculated foaming degree, and stirring for 10min by using a special stirrer to form the resin with uniform bubbles;
step two: releasing the optical fiber from an optical fiber pay-off rack, arranging the optical fiber according to a set color, and placing the optical fiber into a coating die 1 after static electricity removal;
step three: filling the resin in the resin tank into the coating die 1 by pressure;
step four: after the optical fiber comes out of the coating die 1, the optical fiber passes through the coating die 2, a certain negative pressure is applied to the interior of the coating die 2, bubbles in the resin are removed, and redundant resin is removed to finish optical fiber shaping;
step five: after the optical fiber comes out of the coating die 2, the optical fiber is cured through a UV curing furnace and then taken up to form an optical fiber ribbon;
further, the temperature of the resin in the first step is 35 ℃ +/-1 ℃, and the viscosity orientation of the resin is 2500mpa.s-4000mpa.s.
Furthermore, the number of the optical fiber cores in the second step is 8-24.
Furthermore, the foaming degree of the resin in the third step is 35-65%.
Further, the size of the resin inner bubble ranges from 15mm to 18mm, and the method is mainly used for the optical fiber ribbons with large core number, such as 8-core, 12-core, 24-core optical fiber ribbons and the like. The one-time forming adopts the prior banding process, and the investment cost is low.
The manufacturing method of the completely irregular reticular optical fiber ribbon mainly adopts the foaming technology, although the foaming technology which is as stable as possible is adopted, the adhesive supply pressure fluctuates when the bubbles break, and the regular completely regular reticular structure cannot be formed, so the completely irregular reticular structure can be formed, the bonding points connected with the completely irregular optical fiber ribbon have different sizes and different distances, but the resin formed by the broken resin bubbles is bonded at intervals, the density of the bonding points is larger, the distance of the bonding points is smaller, the flexibility is better, the stress is smaller compared with the adhesive dispensing mode, and the additional attenuation is better.
To better illustrate the beneficial effects of the present invention, the following experiments were performed
1) Attenuation of the optical fiber ribbon:
the attenuation data of the optical fibers with front and back bands in the embodiment of the invention is detected as shown in the following table 1: it can be seen that the attenuation of the fiber is significantly reduced after banding.
Figure BDA0003752622350000071
Figure BDA0003752622350000081
TABLE 1 front and rear fiber attenuation data
(2) Torsion test:
the requirement of the industry standard is met, namely the optical fiber rotates 180 degrees clockwise in the length of 30cm, returns to the initial position, rotates 180 degrees anticlockwise, and then returns to the initial position to form a cycle, the number of the twisting cycles is not less than 20, and the result shows that the bonding point of the optical fiber has no cracking phenomenon.
(3) Isolation test:
the optical fiber is separated, and the optical fiber is not damaged when the bonding point of the optical fiber is separated through detection.
Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can make modifications and equivalents to the embodiments of the present invention without departing from the spirit and scope of the present invention, which is set forth in the claims of the present application.

Claims (10)

1. A ribbon of mesh optical fiber, comprising: the optical fiber ribbon comprises a semi-regular structure and a completely irregular structure, wherein the semi-regular structure is formed by combining a plurality of single regular optical fibers together, the semi-regular structure comprises long bonding points and short bonding points, and the long bonding points and the short bonding points are alternately combined to form a net structure; the completely irregular structure is formed by a foaming technology, and the glue supply pressure fluctuates to form the completely irregular structure when the bubbles are broken; the individual bonds connecting the ribbons in the completely irregular structure are of different sizes and distances.
2. The ribbon of reticulated optical fibers of claim 1, wherein: the length range of the long bonding points of the semi-regular structure is 10mm-15mm, and the length range of the short bonding points is 5mm-13mm.
3. The ribbon of reticulated optical fibers of claim 1, wherein: the distance between two adjacent bonding points is 40mm-60mm.
4. The reticulated optical fiber ribbon of claim 1, wherein: and dotting and gluing the front surface and the back surface of the interval of the optical fiber ribbon.
5. The ribbon of reticulated optical fibers of claim 1, wherein: the optical fiber ribbon is coated with resin on the arranged optical fibers by a piezo valve coating method or an intermittent connection optical fiber ribbon coating method.
6. A method of manufacturing a reticulated optical fiber ribbon, as defined in claim 1, the method of manufacturing a substantially irregular reticulated optical fiber ribbon using a foaming technique, comprising the steps of:
the method comprises the following steps: putting the resin into a 35-degree heat preservation device, filling a certain amount of nitrogen from the bottom of a resin tank according to the calculated foaming degree, and stirring for 10min by using a special stirrer to form the resin with uniform bubbles;
step two: releasing the optical fiber from an optical fiber pay-off rack, arranging the optical fiber according to a set color, and placing the optical fiber into a coating die 1 after static electricity removal;
step three: filling the resin in the resin tank into the coating die 1 by pressure;
step four: after the optical fiber comes out of the coating die 1, the optical fiber passes through the coating die 2, a certain negative pressure is applied to the interior of the coating die 2, air bubbles in the resin are removed, and redundant resin is removed to finish optical fiber shaping;
step five: after the optical fiber comes out of the coating die 2, the optical fiber is cured through a UV curing furnace and then taken up to form the optical fiber ribbon.
7. The method of manufacturing a reticulated optical fiber ribbon of claim 6, wherein: in the first step, the temperature of the resin is 35 +/-1 ℃, and the viscosity orientation of the resin is 2500mpa.s-4000mpa.s.
8. The method of manufacturing a reticulated optical fiber ribbon of claim 6, wherein: and the number of the optical fibers in the second step is 8-24.
9. The method of manufacturing a reticulated optical fiber ribbon of claim 6, wherein: the foaming degree of the resin in the third step is 35-65%.
10. The method of manufacturing a reticulated optical fiber ribbon of claim 6, wherein: the size range of the inner bubble of the resin is between 15 and 18 mm.
CN202210849190.9A 2022-07-19 2022-07-19 Net-shaped optical fiber ribbon and manufacturing method thereof Active CN115236813B (en)

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PCT/CN2022/110228 WO2024016387A1 (en) 2022-07-19 2022-08-04 Net-shaped optical fiber ribbon and manufacturing method therefor

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CN1316656A (en) * 2000-04-06 2001-10-10 阿尔卡塔尔公司 Edge joined separatable optical fibre belt
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CN109716193A (en) * 2016-08-08 2019-05-03 康宁光电通信有限责任公司 Flexible optical fibre band with the polymeric layer discontinuously combined
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TW202119074A (en) * 2019-11-04 2021-05-16 日商藤倉股份有限公司 Intermittent connection type optical fiber tape, and method of manufacturing intermittent connection type optical fiber tape can suppress tiny curving consumption of optical fibers
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CN110989115A (en) * 2019-12-13 2020-04-10 南京华信藤仓光通信有限公司 Windable optical fiber ribbon and method of manufacturing the same
CN111175887A (en) * 2020-02-13 2020-05-19 江苏亨通光电股份有限公司 Optical fiber ribbon, optical cable, and method for manufacturing optical fiber ribbon
CN112570199A (en) * 2020-12-16 2021-03-30 南京华信藤仓光通信有限公司 Intermittent connection optical fiber ribbon coating method

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