CN111913261A - Sea optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof - Google Patents
Sea optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof Download PDFInfo
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- CN111913261A CN111913261A CN202010870525.6A CN202010870525A CN111913261A CN 111913261 A CN111913261 A CN 111913261A CN 202010870525 A CN202010870525 A CN 202010870525A CN 111913261 A CN111913261 A CN 111913261A
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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
- G02B6/4415—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
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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
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- 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
-
- 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
- G02B6/4483—Injection or filling devices
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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Abstract
The invention discloses a sea optical cable with an optical unit longitudinally wrapped copper strip structure and a preparation method thereof, wherein the sea optical cable comprises the following steps: the light unit, the copper strip, the sheath, the outer armor steel wire, the first PP rope, the asphalt spacing layer and the second PP rope are longitudinally wrapped on the surface of the light unit by the copper strip, the sheath is arranged on the outer surface of the copper strip, the partial or whole inner surface of the copper strip is covered with the glue film, glue is arranged between the outer surface of the light unit and the inner surface of the copper strip or between the glue films for bonding, and the edge part of the copper strip is overlapped for lap joint and fixation. Through the mode, the sea optical cable with the optical unit longitudinal copper strip wrapping structure and the preparation method thereof optimize the traditional feed type submarine optical cable structure, reduce the self weight and the material cost without argon arc welding, realize the longitudinal wrapping fixation and sealing of the copper strip on the surface of the optical unit through the matching of the glue film and the glue, ensure the strength and the sealing performance of the lap joint, and reduce the repair difficulty and the construction risk of the copper strip.
Description
Technical Field
The invention relates to the technical field of submarine optical cables, in particular to a submarine optical cable with an optical unit longitudinally-wrapped copper strip structure and a preparation method thereof.
Background
The submarine optical cable is used as a link for transoceanic communication and island communication transmission, has the characteristics of high capacity, high reliability, strong anti-interference performance and the like, and plays an extremely important role in international communication. Most submarine optical cables contain feed structures, and at the present stage, cable factories use copper wires or copper strips as main feed conductors, so that large-length transmission of submarine optical fiber communication is realized, and fault early warning and positioning functions are better realized. The main structure of the current common feed submarine optical cable is as follows:
1. stainless steel tube light unit + inner layer steel wire armor + welding copper strip + inner protection layer + possible outer layer steel wire armor and outer protection layer;
2. stainless steel pipe light unit + inlayer copper wire + interior sheath + outer steel wire armor and the outer jacket that probably exists.
In fact, the submarine optical cable has high requirements on mechanical strength, water permeability, corrosion resistance and the like of the submarine cable, so that the outer layer of the copper pipe of the traditional submarine optical cable needs to be additionally provided with steel wire armoring to increase the mechanical property and the corrosion resistance of the submarine cable, and the outer diameter and the weight of the optical cable are increased by multiple times of armoring and copper pipe argon arc welding.
In addition, the steel wire armor of the traditional submarine optical cable on the optical unit may crush the optical unit in the process, the armor steel wire needs to be uniformly coated with water-blocking glue to ensure the water-blocking performance, the coating uniformity of the water-blocking glue is difficult to control, and the coating of the water-blocking glue also affects the welding quality of the subsequent copper pipe argon arc welding. The complex and various processes increase the difficulty of the quality control process of the product, the process stability becomes poor, and a series of complex process flows of coating water-blocking glue on the steel wire armor and welding a copper pipe by argon arc welding increase the manufacturing cost of the sea-water cable, so that the yield is low and needs to be improved.
Disclosure of Invention
The invention mainly solves the technical problem of providing the sea optical cable with the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof, abandons argon arc welding fixation of the copper strip, reduces production difficulty and dead weight, and improves yield.
In order to solve the technical problems, the invention adopts a technical scheme that: the sea optical cable with the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof are provided, and the method comprises the following steps: the copper strip is longitudinally wrapped on the surface of the light unit, the protective sleeve is arranged on the outer surface of the copper strip, the partial or whole of the inner surface of the copper strip is covered with an adhesive film, glue is arranged between the outer surface of the light unit and the inner surface of the copper strip or between the adhesive films for bonding, and the edge part of the copper strip is overlapped for lap joint and fixation.
In a preferred embodiment of the present invention, the adhesive film covers at least one side edge of the inner surface of the copper strip, so that after the edges of the copper strip are overlapped, the adhesive film is located between the overlapping gaps.
In a preferred embodiment of the present invention, when the glue is coated on the surface of the glue film, a non-coating area with a certain width is reserved at the edge of the glue film.
In a preferred embodiment of the present invention, the sheath is a PE sheath.
In a preferred embodiment of the invention, the cable further comprises an outer armor steel wire, a first PP rope, an asphalt spacing layer and a second PP rope, wherein the outer armor steel wire is stranded outside the sheath, the first PP rope is wrapped on the surface of the outer armor steel wire, the asphalt spacing layer is arranged outside the first PP rope, and the second PP rope is wrapped on the surface of the asphalt spacing layer.
In a preferred embodiment of the invention, the outer armor steel wires and the first PP ropes are coated with asphalt.
In a preferred embodiment of the present invention, the light unit includes a fiber paste, a stainless steel tube, and an optical fiber, the optical fiber and the fiber paste being disposed in the stainless steel tube.
In order to solve the technical problem, the invention adopts another technical scheme that: the preparation method of the sea cable comprises the following steps: .
Processing the optical unit, wrapping the optical fiber in a stainless steel band and rolling the optical fiber into a stainless steel tube, injecting fiber paste into the stainless steel tube, welding and fixing the optical fiber paste, and drawing the optical fiber paste through a drawing die to improve the strength of the optical unit;
longitudinally wrapping a copper strip, compounding an adhesive film on the inner surface of the copper strip, then coating glue on the surface of the adhesive film or the surface of the stainless steel tube, rolling and wrapping the copper strip on the surface of the stainless steel tube, arranging an overlapping region at the edge of the copper strip to form an overlapping structure, connecting and sealing the overlapping part by using the adhesive film and the glue, and tightening and straightening by using a sizing die;
shaping, namely performing rolling shaping through a roller to improve the roundness of the copper strip after being rolled;
measuring the diameter for the first time, and measuring the outer diameter of the longitudinally-wrapped and molded copper strip by using a diameter measuring instrument to ensure the roundness and the uniformity of the outer diameter size;
heating, namely heating the longitudinally-wrapped and molded copper strip to ensure that the adhesive film is hot-melted to improve the sealing performance of the lap joint;
extruding, namely, forming a sheath on the surface of the longitudinally-wrapped copper strip by using an extruding machine;
measuring the diameter for the second time, and measuring the outer diameter of the extruded sheath by using a diameter measuring instrument to ensure the roundness and the uniformity of the outer diameter size;
stranding the outer armor steel wires, namely orderly stranding the outer armor steel wires to the sheath by using a cage stranding machine, and spraying asphalt on the outer armor steel wires in the stranding process of the outer armor steel wires to completely coat and wrap the outer armor steel wires with the asphalt;
wrapping the first PP rope, wrapping the first PP rope to the surface of the outer armor steel wire by using a wrapping machine, and spraying asphalt to the first PP rope in the wrapping process;
and (3) constructing an asphalt spacing layer, namely coating asphalt on the wrapped first PP rope to form a circle of asphalt spacing layer.
In a preferred embodiment of the invention, in the shaping step, a hammering device is added to hammer the lap joint, so as to ensure the thickness uniformity and lap joint reliability of the lap joint of the copper strip.
In a preferred embodiment of the invention, the asphalt interlayer further comprises a wrapping machine for wrapping the second PP rope on the surface of the asphalt interlayer.
The invention has the beneficial effects that: the invention provides a sea optical cable with an optical unit longitudinally-wrapped copper strip structure and a preparation method thereof, which optimize the structure of the traditional feed type submarine optical cable, reduce the self weight and the material cost without argon arc welding, realize the longitudinal wrapping fixation and sealing of the copper strip on the surface of the optical unit through the matching of an adhesive film and glue, ensure the strength and the sealing property of a lap joint, and achieve the purposes of reducing the material cost, reducing the repair difficulty of a feed layer and reducing the construction and joint risks.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a preferred embodiment of an optical unit longitudinally wrapped copper strip structured marine optical cable and a method for manufacturing the same according to the present invention;
fig. 2 is a schematic structural view of the copper strip of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 2, an embodiment of the present invention includes:
the sea optical cable with the optical unit longitudinally wrapped copper strip structure as shown in fig. 1 comprises: light unit, copper strips 1, sheath 4, outer armour steel wire 5, first PP rope 7, pitch wall 6 and second PP rope 8, in this embodiment, light unit is including fine cream, stainless steel pipe 3 and optic fibre 2, and optic fibre 2 sets up in stainless steel pipe 3 with fine cream, carries out optic fibre 2's protection through stainless steel pipe 3, and anti extrusion is effectual.
The copper strip 1 is longitudinally wrapped on the surface of the optical unit, the partial or whole inner surface of the copper strip 1 is covered with the glue film 10, the glue 9 is arranged between the outer surface of the optical unit and the inner surface of the copper strip 1 or the glue film 10 for bonding, argon arc welding is not needed, as shown in figure 2, the edge parts of the copper strip 1 are overlapped for lap joint and fixation, and the process difficulty is reduced. In addition, the copper strip 1 does not need argon arc welding, so that the copper strip 1 can be made of thinner materials, and the input cost of raw materials is reduced on the basis of ensuring the feed performance.
When the glue is coated on the surface of the glue film, a non-coating area with a certain width is reserved at the edge of the glue film, so that the subsequent hot melting sealing is facilitated. In this embodiment, the adhesive film 10 covers at least one side edge of the inner surface of the copper tape 1, as shown in fig. 2, the adhesive film 10 completely covers the inner surface of the copper tape 1 and extends to the edge of the copper tape, but a blank area is left at the edge of the adhesive film 10 by the glue 9, so that after the edges of the copper tape 1 are overlapped, the adhesive film 10 is located between overlapped gaps, which is beneficial to hot-melt sealing connection after subsequent heating, and the adhesive film 10 is located at the outer part of the overlapped gap, and the glue 9 is located at the inner part of the overlapped gap, so that double sealing is achieved, and the water.
As shown in figure 1, the sheath 4 is arranged on the outer surface of the copper strip 1, the sheath 4 is a PE sheath, and can be made of HDPE materials through extrusion molding, so that the copper strip 1 has good heat resistance, cold resistance and toughness, good chemical stability and high mechanical strength, and the protection of the copper strip 1 is enhanced.
In this embodiment, 5 transposition of outer armour steel wire are in the 4 outsides of sheath, carry out the tensile protection, with first PP rope 7 around the package 5 surfaces of outer armour steel wire, pitch spacer 6 sets up in the first PP rope 7 outside, second PP rope 8 is around the package on pitch spacer surface, and the surface coating of outer armour steel wire 5 and first PP rope 7 has pitch moreover, forms multilayer protection system, adapts to the complicated service environment in seabed.
Example (b):
a preparation method of a sea cable comprises the following steps:
processing the optical unit, wrapping the optical fiber 2 in a stainless steel band and coiling the stainless steel band into a stainless steel tube 3, simultaneously injecting fiber paste into the stainless steel tube 3, and performing drawing treatment through a drawing die after welding and fixing to improve the strength of the optical unit;
longitudinally wrapping the copper strip, compositing an adhesive film on the inner surface of the copper strip 1 to form a copper-plastic composite strip, spraying glue 9 on the surface of the adhesive film 10 or the surface of the stainless steel tube 3 (the glue 9 avoids the edge of the adhesive film 10), rolling and wrapping the copper strip 1 on the surface of the stainless steel tube 3 through a die, arranging an overlapping area on the edge of the copper strip 1 to form an overlapping structure, connecting and sealing the overlapping part by using the adhesive film 10 and the glue 9, and tightening and straightening by using a sizing die;
shaping, namely performing rolling shaping through a roller of a rolling shaping device to improve the roundness of the rolled copper strip 1, wherein the roller is made of iron and is plated with chrome on the surface to improve the surface smoothness and reduce the bonding;
the diameter is measured for the first time, the outer diameter of the longitudinally-wrapped and molded copper strip 1 is measured through a diameter measuring instrument, and the copper strip is found to be bad and repaired, so that the roundness and the uniformity of the outer diameter dimension are ensured, and the subsequent extrusion molding is facilitated;
heating, namely heating the longitudinally-wrapped and molded copper strip 1 to ensure that the adhesive film 10 is hot-melted to improve the sealing performance of the lap joint;
extruding, namely, molding the sheath 4 on the surface of the heated copper strip by using an extruding machine, preheating the copper strip in the previous heating step, reducing the temperature difference between the metal surface and the extruded PE material, and ensuring that the adhesive force between the sheath 4 and the surface of the copper strip 1 after extrusion molding is better;
measuring the diameter for the second time, and measuring the outer diameter of the extruded sheath 4 by a diameter measuring instrument to ensure the roundness and the uniformity of the outer diameter size;
stranding the outer armor steel wires, namely orderly stranding the outer armor steel wires 5 to the sheath 4 by using a cage stranding machine, spraying asphalt on the outer armor steel wires in the stranding process of the outer armor steel wires 5 to completely coat and wrap the outer armor steel wires 5 by the asphalt, and changing the natural stranding point and the fitting angle of the outer armor steel wires 5 through the design of a stranding die and the adjustment of process parameters to avoid the problem that the copper strip 1 is twisted and rotated by the outer armor steel wires 5 in the stranding process;
wrapping the first PP rope 7, wrapping the first PP rope 7 to the surface of the outer armor steel wire 5 by using a wrapping machine, spraying asphalt on the first PP rope 7 in the wrapping process, and protecting the first PP rope 7 and the outer armor steel wire 5;
constructing an asphalt spacing layer 6, namely coating asphalt on the wrapped first PP rope to form a circle of asphalt spacing layer, so that the anti-corrosion effect is improved;
the second PP rope 8 is around the package, utilizes around the package machine with second PP rope 8 around the package to pitch spacer layer 6 surfaces, promotes anticorrosive and protection effect, and the structure is more stable.
In conclusion, the sea optical cable with the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof, disclosed by the invention, abandon argon arc welding sealing welding of the copper strip 1 and inner and outer double-layer steel wire armoring in the traditional process, reduce the production difficulty, the outer diameter and the self weight, ensure the process stability and the yield of the production process, are beneficial to later maintenance, and have the characteristics of high strength and light weight, so that the storage, transportation, laying and other costs of the sea optical cable can be reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, or direct or indirect applications in other related fields, which are made by the contents of the present specification, are included in the scope of the present invention.
Claims (10)
1. A sea optical cable with an optical unit longitudinally wrapped copper strip structure comprises: the copper strip is longitudinally wrapped on the surface of the light unit, and the protective sleeve is arranged on the outer surface of the copper strip.
2. The optical unit marine cable of longitudinal copper clad strip structure as claimed in claim 1, wherein the adhesive film covers at least one side edge of the inner surface of the copper strip, so that after the edges of the copper strip are overlapped, the adhesive film is located between the overlapping gaps.
3. The optical unit marine cable with longitudinal copper strip-clad structure according to claim 1, wherein the glue is coated on the surface of the glue film, and an uncoated area with a certain width is reserved at the edge of the glue film.
4. The optical unit copper tape structured marine cable of claim 1, wherein said jacket is a PE jacket.
5. The optical unit longitudinally-wrapped copper strip structured marine optical cable according to claim 1, further comprising an outer armor steel wire, a first PP rope, an asphalt spacer layer and a second PP rope, wherein the outer armor steel wire is stranded outside the sheath, the first PP rope is wrapped on the surface of the outer armor steel wire, the asphalt spacer layer is disposed outside the first PP rope, and the second PP rope is wrapped on the surface of the asphalt spacer layer.
6. The optical unit longitudinal copper clad ribbon structured marine optical cable of claim 5, wherein the outer armor wires and the first PP cords are surface-coated with asphalt.
7. The optical unit of the marine cable of longitudinal copper clad strip structure according to claim 1, wherein the optical unit comprises a fiber paste, a stainless steel tube and an optical fiber, the optical fiber and the fiber paste being disposed in the stainless steel tube.
8. A preparation method of a submarine optical cable used for preparing the submarine optical cable with an optical unit longitudinally-wrapped copper strip structure according to any one of claims 1 to 7 is characterized by comprising the following steps:
processing the optical unit, wrapping the optical fiber in a stainless steel band and rolling the optical fiber into a stainless steel tube, injecting fiber paste into the stainless steel tube, welding and fixing the optical fiber paste, and drawing the optical fiber paste through a drawing die to improve the strength of the optical unit;
longitudinally wrapping a copper strip, compounding an adhesive film on the inner surface of the copper strip, then coating glue on the surface of the adhesive film or the surface of the stainless steel tube, rolling and wrapping the copper strip on the surface of the stainless steel tube, arranging an overlapping region at the edge of the copper strip to form an overlapping structure, connecting and sealing the overlapping part by using the adhesive film and the glue, and tightening and straightening by using a sizing die;
shaping, namely performing rolling shaping through a roller to improve the roundness of the copper strip after being rolled;
measuring the diameter for the first time, and measuring the outer diameter of the longitudinally-wrapped and molded copper strip by using a diameter measuring instrument to ensure the roundness and the uniformity of the outer diameter size;
heating, namely heating the longitudinally-wrapped and molded copper strip to ensure that the adhesive film is hot-melted to improve the sealing performance of the lap joint;
extruding, namely, forming a sheath on the surface of the longitudinally-wrapped copper strip by using an extruding machine;
measuring the diameter for the second time, and measuring the outer diameter of the extruded sheath by using a diameter measuring instrument to ensure the roundness and the uniformity of the outer diameter size;
stranding the outer armor steel wires, namely orderly stranding the outer armor steel wires to the sheath by using a cage stranding machine, and spraying asphalt on the outer armor steel wires in the stranding process of the outer armor steel wires to completely coat and wrap the outer armor steel wires with the asphalt;
wrapping the first PP rope, wrapping the first PP rope to the surface of the outer armor steel wire by using a wrapping machine, and spraying asphalt to the first PP rope in the wrapping process;
and (3) constructing an asphalt spacing layer, namely coating asphalt on the wrapped first PP rope to form a circle of asphalt spacing layer.
9. The method for preparing the sea cable according to claim 8, wherein in the shaping step, a hammering device is added to hammer the lap joint, so that the thickness uniformity and the lap joint reliability of the lap joint of the copper strip are ensured.
10. The method for preparing the sea-cable according to claim 8, further comprising wrapping a second PP rope, wherein the second PP rope is wrapped to the surface of the asphalt spacer layer by using a wrapping machine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870525.6A CN111913261A (en) | 2020-08-26 | 2020-08-26 | Sea optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof |
| PCT/CN2020/131910 WO2022041527A1 (en) | 2020-08-26 | 2020-11-26 | Submarine optical cable having optical-unit longitudinal cladding copper strip structure, and method for fabrication thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870525.6A CN111913261A (en) | 2020-08-26 | 2020-08-26 | Sea optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof |
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| Publication Number | Publication Date |
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| CN111913261A true CN111913261A (en) | 2020-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010870525.6A Pending CN111913261A (en) | 2020-08-26 | 2020-08-26 | Sea optical cable with optical unit longitudinally-wrapped copper strip structure and preparation method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111913261A (en) |
| WO (1) | WO2022041527A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113671646A (en) * | 2021-08-04 | 2021-11-19 | 富通集团（嘉善）通信技术有限公司 | Submarine optical cable |
| CN113835175A (en) * | 2021-10-20 | 2021-12-24 | 中英海底系统有限公司 | Eco-friendly submarine optical cable abrasion damage-resistant protective equipment |
| WO2022041527A1 (en) * | 2020-08-26 | 2022-03-03 | 江苏亨通海洋光网系统有限公司 | Submarine optical cable having optical-unit longitudinal cladding copper strip structure, and method for fabrication thereof |
| FR3118205A1 (en) * | 2020-12-22 | 2022-06-24 | Centre National De La Recherche Scientifique | Hybrid telecommunication cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115014727B (en) * | 2022-07-20 | 2023-12-15 | 江苏亨通海洋光网系统有限公司 | Submarine optical cable torsional rigidity test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041527A1 (en) * | 2020-08-26 | 2022-03-03 | 江苏亨通海洋光网系统有限公司 | Submarine optical cable having optical-unit longitudinal cladding copper strip structure, and method for fabrication thereof |
| FR3118205A1 (en) * | 2020-12-22 | 2022-06-24 | Centre National De La Recherche Scientifique | Hybrid telecommunication cable |
| WO2022136217A1 (en) * | 2020-12-22 | 2022-06-30 | Centre National De La Recherche Scientifique | Hybrid telecommunication cable |
| CN113671646A (en) * | 2021-08-04 | 2021-11-19 | 富通集团（嘉善）通信技术有限公司 | Submarine optical cable |
| CN113671646B (en) * | 2021-08-04 | 2023-10-24 | 富通集团（嘉善）通信技术有限公司 | Submarine optical cable |
| CN113835175A (en) * | 2021-10-20 | 2021-12-24 | 中英海底系统有限公司 | Eco-friendly submarine optical cable abrasion damage-resistant protective equipment |
| CN113835175B (en) * | 2021-10-20 | 2023-09-22 | 中英海底系统有限公司 | Protection equipment for abrasion resistance and damage of ecological friendly submarine optical cable |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2022041527A1 (en) | 2022-03-03 |
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