CN114895417A - Optical fiber ribbon cable - Google Patents
Optical fiber ribbon cable Download PDFInfo
- Publication number
- CN114895417A CN114895417A CN202210494309.5A CN202210494309A CN114895417A CN 114895417 A CN114895417 A CN 114895417A CN 202210494309 A CN202210494309 A CN 202210494309A CN 114895417 A CN114895417 A CN 114895417A
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- China
- Prior art keywords
- optical fiber
- tube
- optical
- cable
- fiber ribbon
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000013307 optical fiber Substances 0.000 title claims abstract description 95
- 230000003287 optical effect Effects 0.000 claims abstract description 41
- 239000012792 core layer Substances 0.000 claims abstract description 18
- 239000010410 layer Substances 0.000 claims abstract description 9
- 238000010030 laminating Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Images
Classifications
-
- 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
- G02B6/4403—Optical cables with ribbon structure
-
- 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
-
- 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
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
-
- 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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The invention belongs to the field of optical cables, and particularly relates to an optical fiber ribbon optical cable. It comprises the following steps: the mandrel pipe, the core layer and the sheath layer are sequentially arranged from inside to outside; a plurality of optical fiber wire groups are uniformly arranged in the core layer in the circumferential direction around the axis of the optical cable, and the optical fiber wire groups contain optical fiber ribbons; the axial center tube is a hollow tube and is arranged at the axial center of the optical cable along the axial direction; the optical fiber line set comprises splayed bundle tubes on the cross section of the optical cable, an inner tube and an outer tube are sequentially arranged in each splayed bundle tube from inside to outside along the radial direction of the optical cable, the inner tube, the outer tube and the splayed bundle tube inner wall form a 8-shaped cavity on the radial cross section of the optical cable, an optical fiber ribbon is arranged in the cavity, and the optical fiber ribbon laminating inner tube and the optical fiber ribbon laminating outer tube are S-shaped and are laminated with the inner walls of the splayed bundle tubes. According to the invention, through the special S-shaped arrangement, the twisting difference of the two ends of the width of the optical fiber ribbon is reduced in the twisting process, and the tearing acting force generated to the optical fiber ribbon when the optical cable is twisted is reduced.
Description
Technical Field
The invention belongs to the field of optical cables, and particularly relates to an optical fiber ribbon optical cable.
Background
The optical fiber ribbon cable is a special optical cable, and the inside thereof is different from a conventional optical cable in that the optical fiber bundle is replaced by the optical fiber ribbon. It is often used in situations where distribution lines are required and where identification of the source of each fiber line access is required.
However, the existing optical fiber ribbon cables generally have the problem that the optical fiber ribbon is easily torn during the twisting process of the optical fiber ribbon cables, so that the internal part of the optical fiber ribbon cables is damaged.
Therefore, the optical fiber ribbon cable generally has the defect of poor torsion resistance.
Disclosure of Invention
The invention provides an optical fiber ribbon cable, aiming at solving the problems that the existing optical fiber ribbon cable has poor torsion resistance, needs to keep the optical fiber ribbon cable untwisted when in use, and is very easy to cause damage to an internal optical fiber ribbon after being twisted.
The invention aims to:
firstly, the anti-distortion performance of the optical cable is improved;
and secondly, the damage of the optical cable to the optical fiber tape in the twisting process is reduced.
In order to achieve the above object, the present invention provides the following technical solutions.
A fiber optic ribbon cable comprising:
the mandrel pipe, the core layer and the sheath layer are sequentially arranged from inside to outside;
a plurality of optical fiber wire groups are uniformly arranged in the core layer in the circumferential direction around the axis of the optical cable, and the optical fiber wire groups contain optical fiber ribbons;
the axial center tube is a hollow tube and is arranged at the axial center of the optical cable along the axial direction;
the optical fiber line set comprises splayed beam tubes on the cross section of the optical cable, an inner tube and an outer tube are sequentially arranged in each splayed beam tube along the radial direction from inside to outside of the optical cable, the inner walls of the inner tube, the outer tube and the splayed beam tubes form an 8-shaped cavity on the radial cross section of the optical cable, an optical fiber ribbon is arranged in the cavity, and the optical fiber ribbon laminating inner tube and the optical fiber ribbon laminating outer tube are S-shaped and are laminated with the inner walls of the splayed beam tubes.
As a preference, the first and second liquid crystal compositions are,
the inner pipe is a solid pipe, and the outer pipe is a hollow pipe.
As a preference, the first and second liquid crystal compositions are,
and a diaphragm is arranged between the core layer and the sheath layer.
As a preference, the first and second liquid crystal compositions are,
the dynamic friction coefficient of the diaphragm is less than or equal to 20.
As a preference, the first and second liquid crystal compositions are,
and a plurality of buffer cavities are arranged in the core layer.
As a preference, the first and second liquid crystal compositions are,
the number of the buffer cavities is equal to the number of the optical fiber wire groups.
As a preference, the first and second liquid crystal compositions are,
the buffer cavity and the optical fiber line group are arranged at intervals.
As a matter of preference,
the buffer cavity is hollow and fan-shaped, and the tip of the buffer cavity faces the axis.
The invention has the beneficial effects that:
1) through the special S-shaped arrangement, the twisting difference of the two ends of the width of the optical fiber ribbon is reduced in the twisting process, and the tearing acting force generated on the optical fiber ribbon when the optical cable is twisted is reduced;
2) through the cooperation of hollow tube and solid tubular structure, can further avoid the optic fibre area to twist reverse the extrusion effort that the in-process received at the optical cable, produce good protection effect to the optic fibre area in the optical cable.
Description of the drawings:
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of the torsion stress of the local optical fiber group of the optical cable according to the present invention;
FIG. 3 is a schematic view of a torsional deformation of a local group of optical fibers of the fiber optic cable of the present invention;
in the figure: 100-axis tube, 200 core layers, 201 buffer cavity, 300 sheath layers, 400 optical fiber line group, 401 splayed tube, 402 inner tube, 403 outer tube, 404 optical fiber ribbon and 500 diaphragm.
The specific implementation mode is as follows:
the invention is described in further detail below with reference to specific embodiments and the attached drawing figures. Those skilled in the art will be able to practice the invention based on these descriptions. Moreover, the embodiments of the present invention described in the following description are generally only some embodiments of the present invention, and not all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Unless otherwise specified, the raw materials used in the examples of the present invention are all commercially available or available to those skilled in the art; unless otherwise specified, the methods used in the examples of the present invention are all those known to those skilled in the art.
Examples
An optical fiber ribbon cable as shown in fig. 1, comprising:
the optical fiber cable comprises an axial core tube 100, a core layer 200 and a sheath layer 300 which are sequentially arranged from inside to outside, wherein a plurality of optical fiber wire groups 400 are uniformly arranged in the core layer 200 around the circumference of the axis of the optical cable, and the optical fiber wire groups 400 contain optical fiber ribbons 404;
the axial center tube 100 is a hollow tube, is arranged at the axial center of the optical cable along the axial direction, is made of elastic plastic, and mainly plays roles of axial guiding and shaping and internal deformation buffering, so that the optical fiber ribbon 404 is prevented from being damaged due to extrusion deformation of the core layer 200 after the core layer 200 is subjected to external acting force, and the optical signal transmission effect is prevented from being influenced;
the optical fiber line group 400 comprises splayed bundle tubes 401 on the cross section of the optical cable, an inner tube 402 and an outer tube 403 are sequentially arranged in each splayed bundle tube 401 from inside to outside along the radial direction of the optical cable, the inner tube 402 is a solid tube, and the outer tube 403 is a hollow tube;
the inner tube 402, the outer tube 403 and the inner wall of the splayed beam tube form an 8-shaped cavity on the radial section of the optical cable, an optical fiber ribbon 404 is arranged in the cavity, and the optical fiber ribbon 404 is attached to the inner tube 402 and the outer tube 403, wound in an S shape and attached to the inner wall of the splayed beam tube 401;
through the matching arrangement of the structures, the structural characteristics of the optical fiber ribbon type optical cable can be guaranteed, meanwhile, the tearing resistance of the optical fiber ribbon 404 can be improved, and the situation that the optical fiber ribbon 404 is torn due to the twisting of the optical cable in the process of transporting and using the optical cable is avoided;
in a conventional optical fiber ribbon cable, two ends of the width of the optical fiber ribbon 404 are respectively located at two sides of the radial direction of the optical fiber ribbon cable, and the optical fiber ribbon 404 is mostly fixed in a straight arrangement manner, but actually, the conventional arrangement manner can cause the two ends of the width of the optical fiber ribbon 404 to have a larger difference of the twisting linear velocity when the optical fiber cable is twisted, so that the optical fiber ribbon 404 is obviously torn, and compared with the optical fiber bundle, the optical fiber ribbon 404 has the advantages that the optical fiber ribbon is in an extremely thin ribbon shape and is easy to tear and strip, but this also has the disadvantage of extremely poor tearing resistance;
however, in the present invention, as shown in fig. 2 and 3, the optical fiber ribbon 404 is disposed in an S-shape on the radial cross section of the optical cable, and both ends of the width of the optical fiber ribbon 404 are close to the middle of the S-shape, that is, close to the position where the inner tube 402 and the outer tube 403 are opposite, so when the optical cable is twisted, the difference in the linear twisting speed between both ends of the width of the optical fiber ribbon 404 is reduced under the condition of the same twisting angular velocity, but there is still a risk that the optical fiber ribbon 404 is torn and damaged due to such simple disposition, and therefore, the outer tube 403 is further disposed as a hollow tube, and the inner tube 402 is disposed as a solid tube, because the optical cable is easily compressed during twisting, the solid inner tube 402 and the solid outer tube 403 are close to each other and crushed, and the middle of the optical fiber ribbon 404 is damaged, and in addition, the twisting easily causes the difference in the linear twisting velocity between the inner tube 402 and the outer tube 403, which causes the optical fiber ribbon 404 attached to the surfaces of the inner tube 402 and the outer tube 403 at the non-end portion to move poorly, the middle of the optical fiber ribbon 404 is also torn, and under the condition that the outer tube 403 is a hollow tube, the extrusion effect of the inner tube 402 and the outer tube 403 on the optical fiber ribbon 404 can be relieved in a manner that the inner tube 403 and the outer tube 403 are relatively easy to compress and deform, meanwhile, the difference of the torsional linear velocity generated between the inner tube 402 and the outer tube 403 is reduced, and the optical fiber ribbon 404 is further protected from torsion, specifically, as shown in fig. 3, the relative torsional difference between the outer end and the inner end of the optical fiber ribbon 404 is remarkably reduced, the actual two ends are folded towards the middle, at the moment, a margin space is generated due to the torsional difference generated between the outer tube 403 and the inner tube 402, and the tearing force borne by the optical fiber ribbon 404 is weakened through the torsional deformation in the form, so that the optical fiber ribbon 404 is not easy to tear and damage;
in the above configuration, the optical fiber ribbon 404 still retains its original advantageous features, i.e., facilitates separation, routing, and identification of individual optical fibers within the optical fiber ribbon 404 by color.
Further, in the above-mentioned case,
a diaphragm 500 is arranged between the core layer 200 and the sheath layer 300, and the diaphragm 500 is made of a material with a dynamic friction coefficient less than or equal to 20 so as to reduce the torsion force conducted inwards when the optical cable is twisted;
in addition, the core layer 200 is further provided with a plurality of buffer cavities 201, the number of the buffer cavities 201 is equal to the number of the optical fiber groups 400, the buffer cavities are arranged at intervals with the optical fiber groups 400, the buffer cavities 201 are fan-shaped, the tips of the buffer cavities face the axis, the buffer cavities 201 are of hollow structures and have no internal support, and compared with the optical fiber groups 400, the buffer cavities are easier to be compressed by twisting.
Under the cooperation of the structure, the transmission of the sheath layer 300 to the core layer 200 during torsion can be further weakened, the influence of the torsion on the optical fiber ribbon 404 is reduced, the optical fiber ribbon cable can still ensure the optical fiber ribbon 404 to be intact after 90-degree torsion, and the optical fiber ribbon 404 can be damaged after the conventional optical fiber ribbon cable is twisted by about 60 degrees.
Claims (8)
1. A fiber optic ribbon cable, comprising:
the mandrel pipe, the core layer and the sheath layer are sequentially arranged from inside to outside;
a plurality of optical fiber wire groups are uniformly arranged in the core layer in the circumferential direction around the axis of the optical cable, and the optical fiber wire groups contain optical fiber ribbons;
the axial center tube is a hollow tube and is arranged at the axial center of the optical cable along the axial direction;
the optical fiber line set comprises splayed bundle tubes on the cross section of the optical cable, an inner tube and an outer tube are sequentially arranged in each splayed bundle tube from inside to outside along the radial direction of the optical cable, the inner tube, the outer tube and the splayed bundle tube inner wall form a 8-shaped cavity on the radial cross section of the optical cable, an optical fiber ribbon is arranged in the cavity, and the optical fiber ribbon laminating inner tube and the optical fiber ribbon laminating outer tube are S-shaped and are laminated with the inner walls of the splayed bundle tubes.
2. The fiber optic ribbon cable of claim 1,
the inner pipe is a solid pipe, and the outer pipe is a hollow pipe.
3. The fiber optic ribbon cable of claim 1,
and a diaphragm is arranged between the core layer and the sheath layer.
4. The fiber optic ribbon cable of claim 3,
the dynamic friction coefficient of the diaphragm is less than or equal to 20.
5. The fiber optic ribbon cable of claim 1,
and a plurality of buffer cavities are arranged in the core layer.
6. The fiber optic ribbon cable of claim 5,
the number of the buffer cavities is equal to the number of the optical fiber wire groups.
7. The fiber optic ribbon cable of claim 6,
the buffer cavity and the optical fiber line group are arranged at intervals.
8. The fiber optic ribbon cable of claim 5, 6 or 7,
the buffer cavity is hollow and fan-shaped, and the tip of the buffer cavity faces the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210494309.5A CN114895417A (en) | 2022-05-07 | 2022-05-07 | Optical fiber ribbon cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210494309.5A CN114895417A (en) | 2022-05-07 | 2022-05-07 | Optical fiber ribbon cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114895417A true CN114895417A (en) | 2022-08-12 |
Family
ID=82722784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210494309.5A Withdrawn CN114895417A (en) | 2022-05-07 | 2022-05-07 | Optical fiber ribbon cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114895417A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07134229A (en) * | 1993-11-11 | 1995-05-23 | Mitsubishi Cable Ind Ltd | Optical fiber unit and its production |
| CN1203373A (en) * | 1997-05-29 | 1998-12-30 | 住友电气工业株式会社 | Optical fiber cable |
| US6295401B1 (en) * | 1999-12-21 | 2001-09-25 | Siecor Operations, Llc | Optical fiber ribbon cables |
| JP2004109491A (en) * | 2002-09-18 | 2004-04-08 | Fujikura Ltd | Optical drop cable |
| JP2007272098A (en) * | 2006-03-31 | 2007-10-18 | Swcc Showa Cable Systems Co Ltd | Fiber optic cable |
| JP2013205501A (en) * | 2012-03-27 | 2013-10-07 | Sumitomo Electric Ind Ltd | Optical fiber ribbon and optical fiber cable including optical fiber ribbon |
| CN105637397A (en) * | 2013-09-27 | 2016-06-01 | 康宁光电通信有限责任公司 | Optical communication cable |
| WO2016163190A1 (en) * | 2015-04-07 | 2016-10-13 | 株式会社フジクラ | Loose tube, loose tube type optical fiber cable, single fiber isolation method for loose tube optical fiber tape, loose tube manufacturing method, and method for gathering together a plurality of optical fibers |
| US20200142144A1 (en) * | 2017-07-05 | 2020-05-07 | Corning Research & Development Corporation | High fiber density ribbon cable |
| CN111768916A (en) * | 2020-08-05 | 2020-10-13 | 常熟梁方智能技术有限公司 | Novel structure cable, photoelectric composite cable, composite optical cable and shell |
| CN112037979A (en) * | 2020-08-25 | 2020-12-04 | 杭州富通通信技术股份有限公司 | 5G is with mixed cable of resistance to compression photoelectricity |
| CN212392037U (en) * | 2020-08-06 | 2021-01-22 | 常熟梁方智能技术有限公司 | Special-shaped structure cable, photoelectric composite cable and optical cable |
| CN112835164A (en) * | 2021-02-22 | 2021-05-25 | 杭州富通通信技术股份有限公司 | A compression type ribbon optical cable |
| CN113075771A (en) * | 2021-03-31 | 2021-07-06 | 富通集团（嘉善）通信技术有限公司 | Deformation-resistant ribbon optical cable |
-
2022
- 2022-05-07 CN CN202210494309.5A patent/CN114895417A/en not_active Withdrawn
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07134229A (en) * | 1993-11-11 | 1995-05-23 | Mitsubishi Cable Ind Ltd | Optical fiber unit and its production |
| CN1203373A (en) * | 1997-05-29 | 1998-12-30 | 住友电气工业株式会社 | Optical fiber cable |
| US6295401B1 (en) * | 1999-12-21 | 2001-09-25 | Siecor Operations, Llc | Optical fiber ribbon cables |
| JP2004109491A (en) * | 2002-09-18 | 2004-04-08 | Fujikura Ltd | Optical drop cable |
| JP2007272098A (en) * | 2006-03-31 | 2007-10-18 | Swcc Showa Cable Systems Co Ltd | Fiber optic cable |
| JP2013205501A (en) * | 2012-03-27 | 2013-10-07 | Sumitomo Electric Ind Ltd | Optical fiber ribbon and optical fiber cable including optical fiber ribbon |
| CN105637397A (en) * | 2013-09-27 | 2016-06-01 | 康宁光电通信有限责任公司 | Optical communication cable |
| WO2016163190A1 (en) * | 2015-04-07 | 2016-10-13 | 株式会社フジクラ | Loose tube, loose tube type optical fiber cable, single fiber isolation method for loose tube optical fiber tape, loose tube manufacturing method, and method for gathering together a plurality of optical fibers |
| CN107209337A (en) * | 2015-04-07 | 2017-09-26 | 株式会社藤仓 | Loose tube, Loose tube type fiber optic cables, the single separation method of the fibre ribbon of Loose tube, the collection line method of the manufacture method of Loose tube and multifiber |
| US20200142144A1 (en) * | 2017-07-05 | 2020-05-07 | Corning Research & Development Corporation | High fiber density ribbon cable |
| CN111768916A (en) * | 2020-08-05 | 2020-10-13 | 常熟梁方智能技术有限公司 | Novel structure cable, photoelectric composite cable, composite optical cable and shell |
| CN212392037U (en) * | 2020-08-06 | 2021-01-22 | 常熟梁方智能技术有限公司 | Special-shaped structure cable, photoelectric composite cable and optical cable |
| CN112037979A (en) * | 2020-08-25 | 2020-12-04 | 杭州富通通信技术股份有限公司 | 5G is with mixed cable of resistance to compression photoelectricity |
| CN112835164A (en) * | 2021-02-22 | 2021-05-25 | 杭州富通通信技术股份有限公司 | A compression type ribbon optical cable |
| CN113075771A (en) * | 2021-03-31 | 2021-07-06 | 富通集团（嘉善）通信技术有限公司 | Deformation-resistant ribbon optical cable |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20220812 |
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| WW01 | Invention patent application withdrawn after publication |