CN212460140U - Layer-stranded ribbon optical cable - Google Patents
Layer-stranded ribbon optical cable Download PDFInfo
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- CN212460140U CN212460140U CN202021620819.5U CN202021620819U CN212460140U CN 212460140 U CN212460140 U CN 212460140U CN 202021620819 U CN202021620819 U CN 202021620819U CN 212460140 U CN212460140 U CN 212460140U
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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
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Abstract
The utility model belongs to the cable field, especially, relate to a layer stranded ribbon optical cable, have outer jacket, band layer, three piece at least first loose tube and first reinforcement, its characterized in that the inside second appearance chamber of a hourglass type that forms of first loose tube main part, the first loose tube main part left and right sides respectively is equipped with a adapting unit, the first loose tube main part upper and lower both sides respectively are equipped with a semicircular safe edge, two safe edges link to each other with the adapting unit of left and right sides respectively, the safe edge encloses first loose tube main part inside, and form two first appearance chambeies, two partial appearance chambeies of the second appearance chamber of hourglass type are equipped with the optical fiber tape and fold the area body; the utility model has the advantages of simple structure, strong compression resistance, strong tensile strength, large fiber core density, difficult deformation of the loose tube main body, no displacement of the optical fiber and the like; the utility model provides a single loose tube compressive property not strong problem of prior art middle level hank formula ribbon optical cable.
Description
Technical Field
The utility model belongs to the cable field especially relates to a layer stranded ribbon optical cable.
Background
The usage amount of the layer stranded ribbon optical cable serving as a connection carrier of a trunk network is increased year by year, and the requirement on the lateral pressure resistance of a loose tube is higher due to the high optical fiber density in the loose tube of the layer stranded ribbon optical cable.
In the prior art, for example, CN111175920A discloses a 5G network communication optical cable, which has a central reinforcement, a loose tube, a protective layer, an outer sheath, and an optical fiber, and is characterized in that the loose tube is composed of a first protective wall and a second protective wall, one end of the first protective wall is connected to one end of the second protective wall, the other end of the first protective wall is connected to the other end of the second protective wall, the loose tube is in a semi-cylindrical shape, a cavity is formed between the first protective wall and the second protective wall, the optical fiber is located in the cavity, two edges of the second protective wall are both tangent to the inner wall of the protective layer, a perpendicular bisector plane of the second protective wall of the loose tube passes through a top end straight line of the first protective wall of the loose tube and an axis of the central reinforcement, and a top end straight line of the first protective wall is attached to; adjacent loose tubes are tangent.
The above prior art has the following disadvantages: the loose tube main body is easily flattened under direct stress, thereby influencing the use of the optical cable.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, the present invention discloses a layer stranded optical ribbon cable, which is realized by the following technical solution.
A layer-stranded optical ribbon cable having an outer jacket, a tape layer, at least three first loose tubes, and first strength members, the first loose tube is twisted outside the first reinforcing piece, the wrapping layer is positioned outside the twisted layer formed by the loose tube, the outer protective layer is extruded outside the wrapping layer, the novel loose tube is characterized in that the first loose tube is composed of a first loose tube main body, a second hourglass-shaped containing cavity is formed in the first loose tube main body, the second containing cavity is composed of two capacity dividing cavities, connecting parts are respectively arranged on the left side and the right side of the first loose tube main body, semicircular protective edges are respectively arranged on the upper side and the lower side of the first loose tube main body, the left end of the upper protective edge is connected with the left connecting part, the right end of the lower protective edge is connected with the right connecting part, the protective edges enclose the first loose tube main body, and two first cavities are formed, and the two sub-cavities of the hourglass-shaped second cavity are provided with optical fiber ribbon laminated bodies.
The layer stranded ribbon optical cable is characterized in that the ribbon stack body is composed of at least two optical fiber ribbons, and the optical fiber ribbons are formed by combining at least two optical fibers.
The layer stranded ribbon cable is characterized in that the optical fiber type is G.652 type, G.653 type, G.654 type, G.655 type, G.656 type, G.657 type, A1a type, A1b type or A1c type.
In the layer stranded ribbon optical cable, optical fiber ribbons formed by combining different types of optical fibers can be arranged in the two capacity dividing cavities of the second cavity, and the different types of optical fibers can be placed in the two capacity dividing cavities; the protective edges on the upper side and the lower side increase the lateral pressure resistance of the optical cable, when the optical cable receives large pressure, the protective edges are extruded and deformed, and the first loose tube main body in the optical cable is not stressed, so that the transmission performance of the optical fiber in the optical cable is not influenced.
The layer stranded ribbon optical cable is characterized in that a second reinforcing piece is arranged in the first accommodating cavity, and the second reinforcing piece is made of a steel wire or a glass fiber rod.
In the layer stranded ribbon optical cable, the tensile property and the compressive property of the first loose tube are enhanced, so that the layer stranded ribbon optical cable can adapt to a more severe working environment.
The layer stranded ribbon optical cable is characterized in that a second supporting component is clamped between two sub-cavities of the second cavity, and the second supporting component is made of polypropylene.
Above-mentioned a layer stranded ribbon optical cable, the card has the second support component between two partial volumes that hold the chamber in the second, can further strengthen first loose sheathed tube compressive capacity, also can prevent simultaneously that first loose sheathed tube main part from holding the chamber deformation because of pressure is too big messenger second, influences the transmission performance of inside optic fibre, also can prevent that the second from holding the optical fiber ribbon in two partial volumes that hold the chamber and shifting each other, cause the pressure fibre, make the additional decay grow of optic fibre or disconnected fine scheduling problem.
The layer stranded ribbon optical cable is characterized in that a second loose tube is arranged in the first accommodating cavity, at least one optical fiber is arranged in the second loose tube, and the material of the second loose tube is polybutylene terephthalate or modified polypropylene.
Above-mentioned a layer stranded ribbon optical cable, make full use of the space in the loose sleeve, increased the fibre core density of optical cable, make the optical cable can have two kinds of modes of continuing of optic fibre area and optical cable simultaneously, satisfy different construction demands.
The layer stranded ribbon optical cable is characterized in that each top angle of the upper side and the lower side of the outer part of the first loose tube main body forms a first supporting part, and the first supporting parts are in contact with the inner wall of the protective edge, so that the pressure resistance of the loose tube is further enhanced.
The layer-stranded ribbon optical cable is characterized in that the outer protective layer material is low-density polyethylene or medium-density polyethylene or high-density polyethylene or flame-retardant polyolefin or polyvinyl chloride.
The layer stranded optical fiber ribbon cable is characterized in that the first reinforcing member is made of steel wires or glass fiber rods.
The layer stranded ribbon optical cable is characterized in that the first loose sleeve material is polybutylene terephthalate or modified polypropylene.
Therefore, the utility model has the beneficial effects of simple structure, compressive property are strong, tensile strength is strong, fibre core density is big, loose sleeve main part non-deformable, optic fibre does not shift.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a loose tube structure according to embodiments 1 to 4 of the present invention.
Fig. 3 is a schematic structural view of embodiment 2 of the present invention.
Fig. 4 is a schematic structural view of embodiment 3 of the present invention.
Fig. 5 is a schematic structural view of embodiment 4 of the present invention.
Fig. 6 is a schematic structural view of embodiment 5 of the present invention.
In the figure: 1. the optical fiber cable comprises an outer protection layer, 2 parts of a wrapping tape layer, 3 parts of a first loose tube, 31 parts of a protective edge, 32 parts of a first containing cavity, 33 parts of a first loose tube main body, 34 parts of a second containing cavity, 35 parts of a connecting part, 36 parts of a first supporting part, 4 parts of an optical fiber tape laminated body, 5 parts of a first reinforcing part, 6 parts of a second reinforcing part, 7 parts of a second supporting part and 8 parts of a second loose tube.
Detailed Description
Example 1
Referring to fig. 1 and 2, a layer stranded optical fiber ribbon cable having an outer sheath 1, a tape layer 2, at least three first loose tubes 3, and first reinforcing members 5, wherein the first loose tube 3 is stranded outside the first reinforcing members 5, the tape layer 2 is disposed outside a stranded layer formed by the first loose tube 3, and the outer sheath 1 is extruded outside the tape layer 2, is characterized in that the first loose tube 3 is formed by a first loose tube main body 33, a second cavity 34 having a hourglass shape is formed inside the first loose tube main body 33, the second cavity 34 is formed by two sub-cavities, a connecting member 35 is disposed on each of left and right sides of the first loose tube main body 33, a semicircular protecting edge 31 is disposed on each of upper and lower sides of the first loose tube main body 33, a left end of the upper protecting edge 31 is connected to a left connecting member 35, a right end of the lower protecting edge 31 is connected to a right connecting member 35, the protecting edge 31 surrounds the first loose tube main body 33, and two first cavities 32 are formed, the two sub-cavities of the hourglass-shaped second cavity 34 are provided with the optical fiber ribbon tape body 4, the optical fiber ribbon tape body 4 is composed of at least two optical fiber ribbons, and the optical fiber ribbons are composed of at least two optical fibers.
In this embodiment, optical fiber ribbons formed by combining different types of optical fibers may be disposed in the two capacity dividing cavities of the second cavity 34, so that different types of optical fibers and types of optical fibers in the optical fiber ribbons can be placed; the protective edges 31 on the upper side and the lower side increase the lateral pressure resistance of the optical cable, when the optical cable receives larger pressure, the protective edges 31 are extruded and deformed, the first loose tube main body 33 in the optical cable is not stressed, and the transmission performance of the optical fiber in the optical cable is not affected.
Example 2
Referring to fig. 2 and 3, a layer stranded optical fiber ribbon cable having an outer sheath 1, a tape layer 2, at least three first loose tubes 3, and first reinforcing members 5, wherein the first loose tube 3 is stranded outside the first reinforcing members 5, the tape layer 2 is disposed outside a stranded layer formed by the first loose tube 3, and the outer sheath 1 is extruded outside the tape layer 2, is characterized in that the first loose tube 3 is formed by a first loose tube main body 33, a second cavity 34 having a hourglass shape is formed inside the first loose tube main body 33, the second cavity 34 is formed by two sub-cavities, a connecting member 35 is disposed on each of left and right sides of the first loose tube main body 33, a semicircular protecting edge 31 is disposed on each of upper and lower sides of the first loose tube main body 33, a left end of the upper protecting edge 31 is connected to a left connecting member 35, a right end of the lower protecting edge 31 is connected to a right connecting member 35, the protecting edge 31 surrounds the first loose tube main body 33, and two first cavities 32 are formed, two sub-cavities of the hourglass-shaped second cavity 34 are provided with the optical fiber ribbon tape body 4, the optical fiber ribbon tape body 4 is composed of at least two optical fiber ribbons, the optical fiber ribbons are composed of at least two optical fibers, and the first cavities 32 are internally provided with second reinforcing parts 6.
The layer stranded optical fiber ribbon cable according to the above embodiment is characterized in that the second strength member 6 is made of steel wire or glass fiber rod.
This embodiment enhances the tensile and compressive properties of the first loose tube 3 to enable it to be adapted to more severe working environments.
Example 3
Referring to fig. 2 and 4, a layer stranded optical fiber ribbon cable having an outer sheath 1, a tape layer 2, at least three first loose tubes 3, and first reinforcing members 5, wherein the first loose tube 3 is stranded outside the first reinforcing members 5, the tape layer 2 is disposed outside a stranded layer formed by the first loose tube 3, and the outer sheath 1 is extruded outside the tape layer 2, is characterized in that the first loose tube 3 is formed by a first loose tube main body 33, a second cavity 34 having a hourglass shape is formed inside the first loose tube main body 33, the second cavity 34 is formed by two sub-cavities, a connecting member 35 is disposed on each of left and right sides of the first loose tube main body 33, a semicircular protecting edge 31 is disposed on each of upper and lower sides of the first loose tube main body 33, a left end of the upper protecting edge 31 is connected to a left connecting member 35, a right end of the lower protecting edge 31 is connected to a right connecting member 35, the protecting edge 31 surrounds the first loose tube main body 33, two first cavities 32 are formed, the two sub-cavities of the hourglass-shaped second cavity 34 are provided with optical fiber ribbon tape bodies 4, each optical fiber ribbon tape body 4 is composed of at least two optical fiber ribbons, each optical fiber ribbon is composed of at least two optical fibers, a second reinforcing part 6 is arranged in each first cavity 32, and a second supporting part 7 is clamped between the two sub-cavities of the second cavity 34.
The layer stranded optical fiber ribbon cable according to the above embodiment is characterized in that the second supporting member 7 is made of polypropylene.
In this embodiment, the second supporting member 7 is clamped between the two sub-cavities of the second cavity 34, so that the compression resistance of the first loose tube 3 can be further enhanced, and meanwhile, the second cavity 34 can be prevented from being deformed due to too large pressure of the first loose tube main body 33, which affects the transmission performance of the internal optical fiber, and the problems that the optical fiber ribbons in the two sub-cavities of the second cavity 34 are displaced from each other, which causes fiber compression, and the additional attenuation of the optical fiber is increased or the optical fiber is broken are also prevented.
Example 4
Referring to fig. 2 and 5, a layer stranded optical fiber ribbon cable having an outer sheath 1, a tape layer 2, at least three first loose tubes 3, and first reinforcing members 5, wherein the first loose tube 3 is stranded outside the first reinforcing members 5, the tape layer 2 is disposed outside a stranded layer formed by the first loose tube 3, and the outer sheath 1 is extruded outside the tape layer 2, is characterized in that the first loose tube 3 is formed by a first loose tube main body 33, a second cavity 34 having a hourglass shape is formed inside the first loose tube main body 33, the second cavity 34 is formed by two sub-cavities, a connecting member 35 is disposed on each of left and right sides of the first loose tube main body 33, a semicircular protecting edge 31 is disposed on each of upper and lower sides of the first loose tube main body 33, a left end of the upper protecting edge 31 is connected to a left connecting member 35, a right end of the lower protecting edge 31 is connected to a right connecting member 35, the protecting edge 31 surrounds the first loose tube main body 33, and two first cavities 32 are formed, two sub-cavities of the hourglass-shaped second cavity 34 are provided with the optical fiber ribbon tape body 4, the optical fiber ribbon tape body 4 is composed of at least two optical fiber ribbons, each optical fiber ribbon is composed of at least two optical fibers, a second loose tube 8 is arranged in the first cavity 32, and at least one optical fiber is arranged in the second loose tube 8.
The layer stranded optical fiber ribbon cable according to the above embodiment is characterized in that the second loose tube 8 is made of polybutylene terephthalate or modified polypropylene.
In this embodiment, make full use of the space in the loose tube, increased the fibre core density of optical cable, made the optical cable can have two kinds of modes of continuing of optic fibre area and optical cable simultaneously, satisfied different construction demands.
Example 5
Referring to fig. 2 and 6, a layer stranded optical fiber ribbon cable having an outer sheath 1, a covering layer 2, at least three first loose tubes 3, and first reinforcing members 5, wherein the first loose tube 3 is stranded outside the first reinforcing members 5, the covering layer 2 is disposed outside a stranded layer formed by the first loose tube 3, and the outer sheath 1 is extruded outside the covering layer 2, is characterized in that the first loose tube 3 is formed by a first loose tube main body 33, each of upper and lower corners of the outside of the first loose tube main body 33 is formed with a first supporting member 36, an hourglass-shaped second receiving chamber 34 is formed inside the first loose tube main body 33, the second receiving chamber 34 is formed by two sub-chambers, the left and right sides of the first loose tube main body 33 are respectively provided with a connecting member 35, the upper and lower sides of the first loose tube main body 33 are respectively provided with a semicircular protecting edge 31, and the left end of the upper protecting edge 31 is connected with the left connecting member 35, the right-hand member and the right side adapting unit 35 of downside safe edge 31 link to each other, and safe edge 31 encloses first loose sleeve main part 33 inside to form two first chambeies 32, first supporting part 36 contacts with the inner wall of safe edge 31, two partial chambeies that the second of hourglass type holds chamber 34 are equipped with the optical fiber ribbon and fold the area body 4, the optical fiber ribbon folds the area body 4 and comprises two piece at least optical fiber ribbons, the optical fiber ribbon is formed by two piece at least optic fibers and takes, first intracavity is equipped with the loose sleeve pipe 8 of second in holding, is equipped with an optic fiber in the loose sleeve pipe 8 of second at least.
The layer stranded optical fiber ribbon cable according to the above embodiment is characterized in that the second loose tube 8 is made of polybutylene terephthalate or modified polypropylene.
This embodiment further enhances the compression resistance of the first loose tube 3.
The layer-stranded optical ribbon cable according to any of the embodiments above, characterized in that the material of the outer sheath 1 is low density polyethylene or medium density polyethylene or high density polyethylene or flame retardant polyolefin or polyvinyl chloride.
A layer stranded optical ribbon cable according to any of the above embodiments, wherein the optical fiber type is g.652 type, g.653 type, g.654 type, g.655 type, g.656 type, g.657 type, A1a type, A1b type, or A1c type.
A layer stranded optical ribbon according to any of the above embodiments, wherein the first strength member 5 is made of steel wire or glass fiber rod.
A layer stranded optical ribbon cable according to any of the above embodiments, wherein the first loose tube 3 is made of polybutylene terephthalate or modified polypropylene.
The utility model provides a first loose sleeve 3 is different from prior art's shape, is convenient for open and shells, does not need professional instrument, makes the operating efficiency improve by a wide margin.
The utility model provides a single loose tube compressive property not strong problem of prior art middle level hank formula ribbon optical cable.
The above-mentioned embodiments are merely preferred technical solutions of the present invention, and should not be construed as limitations of the present invention. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (10)
1. A layer stranded ribbon optical cable is provided with an outer protective layer (1), a wrapping layer (2), at least three first loose tubes (3) and a first reinforcing member (5), wherein the first loose tubes (3) are stranded outside the first reinforcing member (5), the wrapping layer (2) is positioned outside a stranded layer formed by the first loose tubes (3), the outer protective layer (1) is extruded outside the wrapping layer (2), the layer stranded ribbon optical cable is characterized in that the first loose tubes (3) are composed of first loose tube main bodies (33), a second accommodating cavity (34) in a hourglass shape is formed inside the first loose tube main bodies (33), the second accommodating cavity (34) is composed of two sub-accommodating cavities, connecting members (35) are respectively arranged on the left side and the right side of the first loose tube main bodies (33), semicircular protecting edges (31) are respectively arranged on the upper side and the lower side of the first loose tube main bodies (33), and the left end of the upper protecting edge (31) is connected with the left connecting member (35), the right end of downside safe edge (31) links to each other with right side adapting unit (35), and safe edge (31) enclose first pine sleeve pipe main part (33) inside to form two first chambeies (32), two partial volumes of hourglass shape second chamber (34) are equipped with optical fiber tape and fold area body (4).
2. A stranded optical ribbon according to claim 1, wherein said first cavity (32) is provided with a second strength member (6), and said second strength member (6) is made of steel wire or glass fiber rod.
3. A stranded optical fiber ribbon cable according to claim 1, wherein a second supporting member (7) is clamped between two sub-cavities of the second cavity (34), and the second supporting member (7) is made of polypropylene.
4. The stranded optical ribbon cable of claim 1, wherein a second loose tube (8) is disposed in the first cavity (32), at least one optical fiber is disposed in the second loose tube (8), and the second loose tube (8) is made of polybutylene terephthalate or modified polypropylene.
5. A layer stranded optical fiber ribbon according to claim 1, wherein each of the upper and lower corners of the outer portion of said first loose tube main body (33) is formed with a first supporting part (36), and the first supporting part (36) is in contact with the inner wall of the protective edge (31).
6. A layer stranded optical ribbon cable according to claim 1, wherein the outer sheath (1) is made of low density polyethylene or medium density polyethylene or high density polyethylene or flame retardant polyolefin or polyvinyl chloride.
7. A layer stranded optical ribbon according to claim 1, wherein said first strength member (5) material is a steel wire or a glass fiber rod.
8. A layer stranded optical ribbon according to claim 1, wherein said first loose tube (3) material is polybutylene terephthalate or modified polypropylene.
9. A stranded optical ribbon cable according to claim 1, wherein said ribbon stack (4) is formed of at least two optical fiber ribbons, said optical fiber ribbons being formed of at least two optical fibers in ribbon.
10. The stranded optical ribbon of claim 9, wherein said optical fibers are of the type g.652, g.653, g.654, g.655, g.656, g.657, A1a, A1b, or A1 c.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620819.5U CN212460140U (en) | 2020-08-07 | 2020-08-07 | Layer-stranded ribbon optical cable |
| PCT/CN2020/133728 WO2022027885A1 (en) | 2020-08-07 | 2020-12-04 | Layer-stranded ribbon optical fiber cable having special-shaped structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021620819.5U CN212460140U (en) | 2020-08-07 | 2020-08-07 | Layer-stranded ribbon optical cable |
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| Publication Number | Publication Date |
|---|---|
| CN212460140U true CN212460140U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021620819.5U Active CN212460140U (en) | 2020-08-07 | 2020-08-07 | Layer-stranded ribbon optical cable |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN212460140U (en) |
| WO (1) | WO2022027885A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590540A (en) * | 2024-01-18 | 2024-02-23 | 江苏南方通信科技有限公司 | Reinforced protection type optical cable |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759782A (en) * | 2011-04-27 | 2012-10-31 | 宏安集团有限公司 | Optical fiber cable |
| US10107980B1 (en) * | 2017-12-08 | 2018-10-23 | Ofs Fitel, Llc | Optical fiber cable with rollable ribbons contained in a central tube without intended stranding |
| CN108387987B (en) * | 2018-05-03 | 2024-05-03 | 西安西古光通信有限公司 | Layer stranded type ribbon optical cable |
| CN110286455A (en) * | 2019-07-26 | 2019-09-27 | 常熟市邦知光电科技有限公司 | A kind of optical cable with special-shaped Loose tube |
| CN110853817A (en) * | 2019-12-23 | 2020-02-28 | 常熟共益信息科技有限公司 | Photoelectric composite cable with novel structure for 5G network |
| CN111308627A (en) * | 2020-04-26 | 2020-06-19 | 常熟虞通光电科技有限公司 | High-fiber-core-density optical cable with higher space utilization rate |
| CN111751946A (en) * | 2020-08-07 | 2020-10-09 | 江苏长飞中利光纤光缆有限公司 | Layer-stranded ribbon optical cable with special-shaped structure |
-
2020
- 2020-08-07 CN CN202021620819.5U patent/CN212460140U/en active Active
- 2020-12-04 WO PCT/CN2020/133728 patent/WO2022027885A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117590540A (en) * | 2024-01-18 | 2024-02-23 | 江苏南方通信科技有限公司 | Reinforced protection type optical cable |
| CN117590540B (en) * | 2024-01-18 | 2024-04-02 | 江苏南方通信科技有限公司 | Reinforced protection type optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022027885A1 (en) | 2022-02-10 |
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Address after: 215542 No.1 Zhongli Road, Changkun Industrial Park, Shajiabang Town, Changshu City, Suzhou City, Jiangsu Province Patentee after: Changfei photoelectric cable (Suzhou) Co.,Ltd. Address before: 215542 No.1 Zhongli Road, Changkun Industrial Park, Shajiabang Town, Changshu City, Suzhou City, Jiangsu Province Patentee before: YANGTZE ZHONGLI OPTICAL FIBRE AND CABLE (JIANGSU) Co.,Ltd. |