CN111175887A - Optical fiber ribbon, optical cable, and method for manufacturing optical fiber ribbon - Google Patents
Optical fiber ribbon, optical cable, and method for manufacturing optical fiber ribbon Download PDFInfo
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- CN111175887A CN111175887A CN202010086134.5A CN202010086134A CN111175887A CN 111175887 A CN111175887 A CN 111175887A CN 202010086134 A CN202010086134 A CN 202010086134A CN 111175887 A CN111175887 A CN 111175887A
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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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
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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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/441—Optical cables built up from sub-bundles
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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
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/448—Ribbon cables
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Abstract
The invention provides an optical fiber ribbon, an optical cable and a manufacturing method of the optical fiber ribbon, and relates to the technical field of communication optical cables. The optical fiber ribbon comprises a plurality of groups of core ribbon groups arranged in parallel, wherein the core ribbon groups are provided with gluing parts and separating parts; the gluing parts and the separating parts are arranged between any adjacent core belt groups at intervals and in a staggered manner along the first direction, and the gluing parts and the separating parts are also arranged between any adjacent core belt groups at intervals and in a staggered manner along the second direction; the first direction is the length direction of the core belt group, and the second direction forms an angle with the first direction, so that the technical problem that the optical fiber belt in the prior art cannot meet the manufacturing requirements of large core number, high density and small size at the same time is solved.
Description
Technical Field
The invention relates to the technical field of communication optical cables, in particular to an optical fiber ribbon, an optical cable and a manufacturing method of the optical fiber ribbon.
Background
With The rapid development of FTTH (Fiber To The Home) service, The pipeline resources for installing optical fibers are increasingly tense, and The requirements for optical cables with large core number, high density and small size are often great. When the existing optical fiber ribbon is used for manufacturing the optical fiber ribbon, a plurality of colored optical fibers are generally arranged according to a certain chromatographic order and are bonded together, and the core ribbons are arranged in parallel and cannot be crossed. Although the mode can meet the manufacturing requirement of the optical fiber ribbon with large core number, the formed optical fiber ribbon has larger size and lower density.
In view of the above, there is a need for an optical fiber ribbon, an optical cable and a method for manufacturing the optical fiber ribbon, which can solve the above problems.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
A first object of the present invention is to provide an optical fiber ribbon to alleviate the technical problem of the prior art that the optical fiber ribbon cannot simultaneously satisfy the manufacturing requirements of large core count, high density and small size.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an optical fiber ribbon which comprises a plurality of groups of core ribbon groups arranged in parallel, wherein each core ribbon group is provided with an adhesive part and a separating part;
the gluing parts and the separating parts are arranged between any adjacent core belt groups at intervals and in a staggered manner along a first direction, and the gluing parts and the separating parts are arranged between any adjacent core belt groups at intervals and in a staggered manner along a second direction;
the first direction is the length direction of the core belt group, and the second direction forms an angle with the first direction.
In any of the above technical solutions, further, each group of the core belt groups includes a plurality of core belts;
the core belts are arranged in parallel, and coating layers wrap the outer sides of the core belts in parallel.
In any one of the above technical solutions, further, each set of the core belt set includes one core belt, and the adhesive part and the separation part are arranged between any two adjacent core belts in a spaced and staggered manner.
In any of the above technical solutions, further, the plurality of sets of core bands are respectively a first core band set and a second core band set;
the first core belt group comprises a plurality of core belts, and the second core belt group comprises one core belt.
In any one of the above technical solutions, further, the first core band groups are respectively disposed on two sides of the second core band group along the second direction.
In any of the above technical solutions, further, the outer side of the single core belt is wrapped with a coloring layer.
In any of the above technical solutions, further, the outer diameter of each core band wrapping the colored layer is 185-215 μm or 240-260 μm.
In any of the above technical solutions, further, the length of the adhesive part is 5-30 mm, and/or the length of the separation part is 10-100 mm.
In any of the above embodiments, the adhesive portion is made of an adhesive resin, and the young's modulus of the adhesive resin is 1 to 200 MPa.
A second object of the present invention is to provide an optical cable to alleviate at least one of the above technical problems.
The invention also provides an optical cable which comprises a plurality of the optical fiber ribbons.
It is a third object of the present invention to provide a method of manufacturing an optical fiber ribbon that alleviates at least one of the above-mentioned problems.
The invention also provides a method for manufacturing the optical fiber ribbon, which comprises the following steps:
a wrapping and coating step: arranging a plurality of core belts in parallel, enabling any two adjacent core belts to be tightly attached, and smearing coating layers on the outer sides of the plurality of core belts to form a core belt group;
bonding: and a plurality of groups of core belt groups are arranged in parallel, the adhesive is coated at intervals between two adjacent groups of core belt groups along the length direction of the core belt groups, and the adhesive is coated at intervals between two adjacent groups of core belt groups along the direction of the parallel arrangement of the core belt groups.
The invention has the beneficial effects that:
the invention provides an optical fiber ribbon which comprises a plurality of groups of core ribbon groups arranged in parallel, wherein gluing parts and separating parts which are arranged in a staggered mode at intervals along a first direction are arranged between any adjacent core ribbon groups arranged in parallel, and gluing parts and separating parts which are arranged in a staggered mode at intervals along a second direction are arranged between the plurality of groups of core ribbon groups arranged in parallel. The first direction is the length direction of the core belt groups, and the second direction is arranged at an angle with the first direction and is the arrangement direction of a plurality of groups of core belt groups which are parallel. Through the arrangement, a plurality of core belt groups arranged in parallel can form a grid shape, so that the winding is convenient, the density of the core belt groups is higher when the optical fiber ribbons formed by winding are in the same sectional area, the number of the core belt groups is also larger, and the manufacturing requirements of high density, small size and large core number are further met.
The optical cable provided by the invention comprises a plurality of optical fiber ribbons, and at least one technical effect can be realized.
The invention provides a method for manufacturing an optical fiber ribbon, which comprises the steps of arranging a plurality of core ribbons in parallel, and coating a coating layer on the outer sides of the plurality of core ribbons to form a core ribbon group; and arranging a plurality of groups of core belt groups in parallel, coating the adhesive between two adjacent groups of core belt groups at intervals along the length direction of the core belt groups, and coating the adhesive between two adjacent groups of core belt groups at intervals along the direction of the parallel arrangement of the plurality of groups of core belt groups to further form the optical fiber belt.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a partial schematic view of a fiber optic ribbon according to one embodiment of the present invention;
3 FIG. 3 2 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 1 3; 3
FIG. 3 is a partial schematic view of a fiber optic ribbon according to a second embodiment of the present invention;
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;
FIG. 5 is a partial schematic view of a fiber optic ribbon according to a third embodiment of the present invention;
FIG. 6 is a cross-sectional view of C-C-of FIG. 5;
FIG. 7 is a partial schematic view of a fiber optic ribbon as it is being wound according to one embodiment of the present invention;
fig. 8 is a schematic view of a fiber optic cable according to an embodiment of the present invention.
Icon: 10-core belt group; 20-a glue portion; 30-a separation section; 11-core tape; 12-a coloured layer; 13-a coating layer; 100-fiber ribbon; 200-fiber tube.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through an intermediate medium, or they may be connected internally or indirectly through two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
As shown in fig. 1, 2 and 7, the optical fiber ribbon provided by the present embodiment includes a plurality of sets of core ribbon groups 10 arranged side by side, wherein the core ribbon groups 10 are provided with an adhesive portion 20 and a separating portion 30; the adhesive parts 20 and the separating parts 30 are arranged between any adjacent core belt groups 10 at intervals and in a staggered manner along the first direction, and the adhesive parts 20 and the separating parts 30 are arranged between any adjacent core belt groups 10 at intervals and in a staggered manner along the second direction; the first direction is the length direction of the core band assembly 10 and the second direction is at an angle to the first direction.
In the present embodiment, the first direction and the length direction of a single core belt group 10, and the second direction are the direction in which a plurality of core belt groups 10 are arranged in parallel. Taking the formed optical fiber ribbon as an example of being laid flat on a horizontal plane, i.e., a plan view of the arrangement position of the core ribbon group 10 in fig. 1, the first direction is a horizontal transverse direction (hereinafter referred to as a transverse direction), i.e., a left-right direction, and the second direction is a horizontal longitudinal direction (hereinafter referred to as a longitudinal direction), i.e., an up-down direction. The adhesive portion 20 is formed by bonding two adjacent sets of core tape sets 10 with an adhesive, and the separation portion 30 is formed by separating the two sets of core tape sets 10.
Specifically, the plurality of sets of core belt sets 10 are sequentially arranged in the longitudinal direction, and the adhesive part 20 or the separation part 30 is provided between any two adjacent sets of core belt sets 10 in the longitudinal direction. The gluing part 20 is arranged between the first group and the second group, the separation part 30 is arranged between the third group and the fourth group, the gluing part 20 is arranged between the fourth group and the fifth group, and the like are repeated to connect the core belt groups 10 which are arranged in parallel. Meanwhile, in the multiple sets of core band sets 10, the glue portion 20 and the separation portion 30 are arranged between any two adjacent sets of core band sets 10 at intervals and in an intersecting manner in the transverse direction. When the first core band group 10 and the second core band group 10 are connected by the adhesive to form the adhesive part 20, one adhesive part 20 is further disposed at a distance along the length direction of the core band group 10, and the distance between the two adhesive parts 20 is the separation part 30. That is, the adhesive sections 20 and the separating sections 30 are arranged in a rectangular array, and are disposed alternately across between the sets of core tape sets 10.
By arranging the adhesive part 20 and the separating part 30 between the multiple groups of core ribbon groups 10, the formed optical fiber ribbon is of a net-shaped structure, and then the net-shaped optical fiber ribbon is wound in the longitudinal direction to form a strand, and then the strand can be tied and bound by using a tying band or a tying line. Meanwhile, just because the optical fiber ribbon with a mesh structure can be formed, under the condition of the same cross section, the number of the core ribbon groups 10 for forming the optical fiber ribbon can be increased, and the optical fiber ribbon is tightly wound, namely, the size of the cross section for forming the optical fiber ribbon is not changed, and meanwhile, the density of the optical fiber ribbon is also improved, so that the manufacturing requirements of large core number, high density and small size are met simultaneously.
With continued reference to fig. 1, 2 and 7, preferably, each core band set 10 includes a plurality of core bands 11; the plurality of core belts 11 are arranged in parallel, and coating layers 13 are wrapped on the outer sides of the plurality of parallel core belts 11.
In the present embodiment, a set of core belt sets 10 includes two core belts 11, that is, the two core belts 11 are first arranged side by side, and a coating layer 13 is coated on the outer sides of the two core belt sets 10, so as to integrate the two core belts 11 into a whole, that is, to form a set of core belt sets 10. Then, a plurality of core belts 11 are combined pairwise to form a core belt group 10, then the formed core belt groups 10 are arranged in parallel along the longitudinal direction, and then the adhesive part 20 and the separating part 30 are arranged among the core belt groups 10 in the above manner, so that the reticular optical fiber belt is formed.
Of course, a set of core ribbon groups 10 may also include two core ribbons 11 and three core ribbons 11, or a set of core ribbon groups 10 may include one core ribbon 11, as long as it can form a mesh-shaped optical fiber ribbon and satisfy the manufacturing requirements of large core count, high density and small size.
The coating layer 13 is made of resin, that is, the two core belts 11 are coated with resin to form the resin coating layer 13, and the core belt assembly 10 having the two core belts 11 is formed after the resin is cured.
With continued reference to fig. 1, 2 and 7, the individual core bands 11 are preferably surrounded on the outside by a colored layer 12. Specifically, the outer side of each core tape 11 is colored with an acrylic-based ink material to form a colored layer 12 of the core tape 11. The colored layer 12 can be set according to a certain color spectrum, so when the optical fiber ribbon is formed by the plurality of core ribbons 11, the plurality of core ribbons 11 can be arranged in order according to a certain color spectrum according to the color of the colored layer 12, and then the optical fiber ribbon is formed. The surface of the core ribbon 11 with the colored layer 12 is bright and smooth, and the optical fiber can be identified more favorably in the production and construction of the optical cable.
Preferably, the outer diameter of each core tape 11 after being wrapped with the coloring layer 12 is 185 to 215 μm, which is light in weight, easy to bend, and suitable for aerial or pipeline laying. Alternatively, the outer diameter of each core tape 11 after being wrapped with the coloring layer 12 is 240 to 260 μm, which has good mechanical properties.
Preferably, the length of the adhesive part 20 is 5 to 30mm, and the length of the separation part 30 is 10 to 100 mm. Specifically, the ratio of the length of the adhesive part 20 to the length of the separating part 30 is 1: 3, not only ensuring the good reliability of the connection part of the multi-group core-band groups 10, but also ensuring the good winding performance of the formed optical fiber band, and further being capable of winding and bundling, thereby simultaneously meeting the manufacturing requirements of large core number, high density and small size. For example, when the length of the adhesive part 20 is 5mm, the length of the separation part 30 is 15 mm.
Preferably, the adhesive part 20 is made of adhesive resin, and the Young's modulus of the adhesive resin is 1 to 200 MPa. The adhesive resin is an epoxy resin adhesive, is prepared from an epoxy resin base material, a curing agent, a diluent, an accelerant and a filler, and is an engineering adhesive. The adhesive resin has good adhesive property and low price. Meanwhile, the Young modulus of the bonding resin is within 1-200 MPa, so that the bonding resin has low deformation resistance, and can be deformed adaptively along with the winding of the optical fiber ribbon when the optical fiber ribbon is wound, so that the optical fiber ribbon can be wound conveniently.
The method for manufacturing the optical fiber ribbon provided by the embodiment comprises the following steps:
a wrapping and coating step: arranging a plurality of core belts 11 in parallel, enabling any two adjacent core belts 11 to be tightly attached, and coating a coating layer 13 on the outer sides of the plurality of core belts 11 to form a core belt group 10;
bonding: the multiple sets of core belt groups 10 are arranged in parallel, and the adhesive is coated at intervals between two adjacent sets of core belt groups 10 along the length direction of the core belt groups 10, and the adhesive is coated at intervals between two adjacent sets of core belt groups 10 along the direction in which the multiple sets of core belt groups 10 are arranged in parallel.
Specifically, in the case of manufacturing an optical fiber ribbon, the colored layers 12 are applied to the outer sides of a plurality of single core ribbons 11 in a predetermined color spectrum order, and the colored core ribbons 11 are formed. And then combining a plurality of core belts 11 in pairs in parallel according to a color spectrum, coating resin on the outer sides of the two core belts 11 to form a coating layer 13, and curing the coated resin to form a core belt group 10. The formed core band groups 10 are arranged according to the spectrum sequence by the color of the coloring layer 12, and the bonding resin is intermittently coated between any two adjacent core band groups 10, after the bonding resin is cured, a plurality of adhesive parts 20 which are arranged between the core band groups 10 at intervals are formed, wherein the part which is not coated with the bonding resin is a separation part 30, and then the reticular optical fiber band is formed.
As shown in fig. 8, the present embodiment provides an optical cable including a plurality of optical fiber ribbons 100 as described above. One of the optical fiber ribbons 100 is wound in a strand and bundled with a ribbon. Then, a plurality of optical fiber ribbons 100 are bundled into a whole, and an optical fiber tube 200 is sleeved on the outside of the whole, thereby forming an optical cable.
Example two
With continued reference to fig. 3 and 4, each core band set 10 preferably includes a core band 11, and the glue portion 20 and the separation portion 30 are spaced and staggered between any two adjacent core bands 11.
In the present embodiment, the set of core bands 10 includes one core band 11, and the plurality of core bands 11 are arranged in a predetermined spectral order by the colored layers 12 outside the core band 11. The plurality of core ribbons 11 are arranged in the longitudinal direction as described in the first embodiment in the order of spectrum, and the adhesive resin is intermittently applied between any adjacent two of the core ribbons 11, thereby forming a net-shaped optical fiber ribbon.
EXAMPLE III
With continued reference to fig. 5 and 6, preferably, the plurality of core strip sets 10 are a first core strip set and a second core strip set, respectively; the first core band set comprises a plurality of core bands 11, and the second core band set comprises one core band 11. The two sides of the second core band group along the second direction are respectively provided with a first core band group.
In this embodiment, the number of the first core band groups is two, the number of the second core band groups is multiple, and the multiple second core band groups are arranged between the two first core band groups in parallel. Each second core band group comprises a second core band, and the connection mode of the single core bands 11 in the second embodiment is adopted. Each first core band group comprises two first core bands, and the first core bands 11 are connected in the first embodiment. Then, a first core belt arranged along the longitudinal direction in the plurality of second core belts is fixedly connected with one group of the first core belt groups through the gluing parts 20 arranged at intervals. And fixedly connecting the last second core belt which is arranged along the longitudinal direction in the second core belts with the other second core belt group through gluing parts 20 which are arranged at intervals.
It should be added that the number of the first core band groups is not limited to two, but may also be three, four, etc., and the first core band groups and the second core band groups may also be arranged in parallel at intervals, so long as it is ensured that the formed optical fiber ribbon can simultaneously meet the manufacturing requirements of large core number, high density, and small size.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (11)
1. An optical fiber ribbon is characterized by comprising a plurality of core ribbon groups (10) which are arranged in parallel, wherein the core ribbon groups (10) are provided with gluing parts (20) and separating parts (30);
the gluing parts (20) and the separating parts (30) are arranged between any adjacent core belt groups (10) at intervals and in a staggered manner along a first direction, and the gluing parts (20) and the separating parts (30) are also arranged between any adjacent core belt groups (10) at intervals and in a staggered manner along a second direction;
the first direction is the length direction of the core belt group (10), and the second direction forms an angle with the first direction.
2. The optical fiber ribbon according to claim 1, wherein each group of said ribbon groups (10) comprises a plurality of ribbons (11);
the core belts (11) are arranged in parallel, and coating layers (13) are wrapped on the outer sides of the parallel core belts (11).
3. The optical fiber ribbon according to claim 1, wherein each group of said core ribbon groups (10) comprises one core ribbon (11), said adhesive portion (20) and said separating portion (30) being spaced and staggered between any two adjacent core ribbons (11).
4. The optical fiber ribbon according to claim 1, wherein a plurality of said sets of ribbons (10) are a first set of ribbons and a second set of ribbons, respectively;
the first core belt group comprises a plurality of core belts (11), and the second core belt group comprises one core belt (11).
5. The fiber optic ribbon of claim 4, wherein the second ribbon group is provided with the first ribbon group on both sides of the second direction, respectively.
6. Optical fiber ribbon according to any one of claims 2 to 5, wherein the outer side of the individual core ribbons (11) is coated with a coloring layer (12).
7. The optical fiber ribbon according to claim 6, wherein each of the core ribbons (11) has an outer diameter of 185-215 μm or 240-260 μm surrounding the colored layer (12).
8. Optical fiber ribbon according to any one of claims 1 to 5, wherein the length of the adhesive portion (20) is 5-30 mm and/or the length of the separating portion (30) is 10-100 mm.
9. The optical fiber ribbon according to any one of claims 1 to 5, wherein said adhesive portion (20) employs an adhesive resin, and the Young's modulus of said adhesive resin is 1 to 200 MPa.
10. An optical cable, characterized in that it comprises a plurality of optical fiber ribbons (100) according to any one of claims 1 to 9.
11. A method of manufacturing an optical fiber ribbon comprising the steps of:
a wrapping and coating step: arranging a plurality of core belts (11) in parallel, enabling any two adjacent core belts (11) to be tightly attached, and coating layers (13) on the outer sides of the plurality of core belts (11) to form a core belt group (10);
bonding: the core belt sets (10) are arranged in parallel, adhesive is coated at intervals between two adjacent core belt sets (10) along the length direction of the core belt sets (10), and adhesive is coated at intervals between two adjacent core belt sets (10) along the direction in which the core belt sets (10) are arranged in parallel.
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| CN202010086134.5A CN111175887A (en) | 2020-02-13 | 2020-02-13 | Optical fiber ribbon, optical cable, and method for manufacturing optical fiber ribbon |
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| CN202010086134.5A CN111175887A (en) | 2020-02-13 | 2020-02-13 | Optical fiber ribbon, optical cable, and method for manufacturing optical fiber ribbon |
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Application publication date: 20200519 |