CN101788706A - Pressive bending resistance optical cable and manufacturing method thereof - Google Patents
Pressive bending resistance optical cable and manufacturing method thereof Download PDFInfo
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- CN101788706A CN101788706A CN 201010129909 CN201010129909A CN101788706A CN 101788706 A CN101788706 A CN 101788706A CN 201010129909 CN201010129909 CN 201010129909 CN 201010129909 A CN201010129909 A CN 201010129909A CN 101788706 A CN101788706 A CN 101788706A
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Abstract
The invention discloses a pressive bending resistance optical cable, which comprises an optical fiber, a first cladding layer, a second cladding layer, an aramid yarn and a sheath arranged front inside to outside in turn. The first cladding layer has flexible texture and the second cladding layer has hard texture. For the pressive bending resistance optical cable, the optical fiber capable of being bent in small radius and the cladding layers made of a special pressive bending resistance (PBR) material are adopted, and the pressive bending resistance optical cable allows small-radius bending and rigorous side pressure and has wider working temperature range than similar optical fibers. The pressive bending resistance optical cable can be arranged in small radius and even at a right angle, and is fearless of vehicle running and foot treading after the arrangement, can completely replace a copper wire to be arranged indoors on a national scale, is particularly suitable for an occasion that a great number of cables are arranged in a small space and in the small radius, such as right-angle bending arrangement, winding in a miniature cabinet, and arrangement and winding in a crowded pipe hole or a cabinet. The invention also discloses a method for manufacturing the pressive bending resistance optical cable.
Description
Technical field
The present invention relates to a kind of optical cable, the novel hard-pressed bale material of particularly a kind of employing PBR (Pressive BendingResistance), Pressive bending resistance optical cable with characteristics such as withstand voltage properties are strong, anti-bending strength good, temperature range is wide.The invention still further relates to the manufacture method of pressive bending resistance optical.
Background technology
Under the background of " light advances copper and moves back " and energy-saving and emission-reduction, adopting the alternative copper cabling of optical cable to enter building has become trend.Along with the developing rapidly of Fiber to the home (FTTH, Fiber To The Home) networking, require optical cable to possess higher withstand voltage and anti-bending strength.
The FTTH network can be with the video of past based on different circuits and equipment, the internet, services such as phone are melted into a whole, the integration of three networks, brought high flow for single circuit, demand to bandwidth is very high, and the cost of traditional copper wire and bandwidth capacity more and more can not satisfy day by day the needs that increase, therefore be suitable for indoor lay with casing in the optical cable that lays become main flow trend.Yet, the most indoor environment that lays all compares badly, such as, the turning of minor radius or even right-angled bend, crowd into the wiring of thickly dotted mutual winding, may push anywhere or anytime, big or the like the factor of temperature range that the national geography scope extensively causes, all may cause the decay of transmission signals, the capacity of channel, error code of system or the like, therefore require optical cable that enough guarantees must be provided, and the anti-extruding of optical cable, the temperature range of work etc. have been proposed requirements at the higher level.
In addition, the optical cable bending also can cause signal attenuation.The optical cable bending is divided into macrobend and little curved.Any bending intuitively all is considered as the optical cable macrobend.And the little curved generation of optical cable is because be subjected to differential pressure at random, thereby causes optical cable axially to produce small distortion, and amplitude generation micron order changes, and length the millimeter level takes place changes.The bending of optical cable may cause signal attenuation, even nonvolatil signal transmission ending.This shows that when the optical cable carrying signal, the optical cable bending can cause signal attenuation, influences mass of system.
Summary of the invention
In order to solve problem such as the crooked extrusion capability difference of prior art optical cable, be necessary to provide a kind of Pressive bending resistance optical cable.
Also be necessary to provide the manufacture method of pressive bending resistance optical.
The present invention solves the problems of the technologies described above provides a kind of Pressive bending resistance optical cable, comprises the optical fiber, the first hard-pressed bale layer, the second hard-pressed bale layer, aramid yarn and the oversheath that set gradually from inside to outside.
In Pressive bending resistance optical cable of the present invention, described sheath is made of PVC, LSZH or the indoor fire proofing of TPU.
In Pressive bending resistance optical cable of the present invention, described aramid yarn is used to protect cable core, plays the tension effect.
In Pressive bending resistance optical cable of the present invention, the first hard-pressed bale layer material softness is used for isolating or the buffering external pressure, improves voltage endurance capability; The second hard-pressed bale layer material is harder, has broad construction and operating temperature range.
In Pressive bending resistance optical cable of the present invention, the first hard-pressed bale layer adopts the polyacrylic resin material, and the second hard-pressed bale layer adopts polyvinylidene fluoride material.
In Pressive bending resistance optical cable of the present invention, described optical fiber is optical fiber G.657A/B.
In Pressive bending resistance optical cable of the present invention, described fibre diameter is roughly 0.245 millimeter, and the described first hard-pressed bale layer diameter is roughly 0.4 millimeter, and the described second hard-pressed bale layer diameter is roughly 0.9 millimeter.
The present invention also provides a kind of Pressive bending resistance optical cable, it has round section, comprise the optical fiber, the first hard-pressed bale layer, the second hard-pressed bale layer, the 3rd hard-pressed bale layer, aramid yarn and the sheath that set gradually from the inside to the outside, the described first hard-pressed bale layer quality is softer, described the 3rd hard-pressed bale layer quality is harder, and the described second hard-pressed bale layer quality soft or hard degree is between described first hard-pressed bale layer and described the 3rd hard-pressed bale layer.
In pressive bending resistance optical, described first hard-pressed bale layer and the described second hard-pressed bale layer adopt ultraviolet curing process to form, and described the 3rd hard-pressed bale layer adopts extruder to extrude formation.
The present invention also provides a kind of Pressive bending resistance optical cable manufacture method, comprise the optical fiber unwrapping wire, form to apply the first hard-pressed bale layer, utilize the ultraviolet curing stove to the first hard-pressed bale layer be cured, the optical fiber preheating, utilize extruder to extrude the lining second hard-pressed bale layer, form the second hard-pressed bale layer, cooling, tightly overlap fine take-up, tightly overlap fine unwrapping wire, aramid fiber unwrapping wire, utilize extruder to extrude sheath, sheath cooling and optical cable take-up.
Compared to prior art, Pressive bending resistance optical cable of the present invention and manufacture method thereof have following beneficial effect with respect to common optical cable: 1, have the right-angle bending ability, efficiently solve the operating factor of memory space of optical cable in the equipment, reduce owing to optical cable line ball or the crooked optical communication signal weakening that causes of minor radius or the phenomenon of communication disruption.Small-bend radius optical fiber has remarkable bending resistance, and crooked added losses have significant the improvement (to work as bending radius: R=15mm, the bending loss of G652D optical fiber: 1.0dB/ circle than general single mode fiber; The bending loss of small-bend radius optical fiber: 0.01dB/ circle).2, better voltage endurance capability; The hard-pressed bale layer that optical cable adopts is multilayer and interior soft outer hard structure, makes optical cable when being subjected to the external force extruding, reduces and slow down the influence of external force extruding to optical fiber.Voltage endurance capability improves 2 times than ordinary optical cable.With respect to the 500N/100mm voltage endurance capability of common wire jumper cable, the PBR optical cable can reach 1000N/100mm.3, better temperature performance.The fine working temperature of tight cover that optical cable adopted can reach-50～+ 150 ℃ (fine working temperatures of common tight cover :-20-+70 ℃).4, oversheath employing PVC/LSZH/TPU fire protection flame retarding, the gas that produces when satisfying fire or smog transparency reach the requirement more than 50%.Adopt PVC/LSZH/TPU fire proofing (LSZH; meet environmental protection RoHS standard) make sheath; bending radius reaches the G.657A/B optical fiber of 15mm and 7.5mm; PBR process materials hard-pressed bale, the protection of wrapped aramid yarn; add sheath again and form the fiber unit cable, reached safety, softness, can vertically reach the requirement that little space lays.Pressive bending resistance optical cable of the present invention have with the same being easy to of copper cable install, coiling, can little installation radius, right-angled bend, in small box, loop.
Description of drawings
Fig. 1 is the cross section structure synoptic diagram of a better embodiment of Pressive bending resistance optical cable of the present invention.
Fig. 2 is the cross section structure synoptic diagram of another better embodiment of Pressive bending resistance optical cable of the present invention.
Fig. 3-the 4th, the schematic diagram of fabrication technology of Pressive bending resistance optical cable of the present invention.
Fig. 5 is the manufacturing process synoptic diagram of Pressive bending resistance optical cable of the present invention.
Embodiment
Below in conjunction with diagram Pressive bending resistance optical cable of the present invention is specifically described.
Seeing also Fig. 1, is the cross section structure synoptic diagram of a better embodiment of Pressive bending resistance optical cable of the present invention.As shown in Figure 1, described Pressive bending resistance optical cable 100 has round section, comprises the optical fiber 101, the first hard-pressed bale layer 102, the second hard-pressed bale layer 103, aramid yarn 104 and the sheath 105 that set gradually from inside to outside.The described first hard-pressed bale layer 102, the second hard-pressed bale layer 103 constitute tight sleeve layer.Described optical fiber 101, the first hard-pressed bale layer 102 and the tight cover fine 106 of the second hard-pressed bale layer, 103 common formation.Wherein, described sheath 105 can be by PVC (Polyvinylchlorid, Polyvinylchloride), LSZH (Low Smoke Zero Halogen, low smoke and zero halogen) or TPU (Thermoplastic polyurethanes, the thermoplastic elastic body rubber) etc. fire proofing constitutes, and the gas fume transparency that produces when described sheath 105 is lighted is higher than more than 50%.Described aramid yarn 104 is used to protect cable core, plays the tension effect.The described first hard-pressed bale layer, 102 quality are softer, can produce miniature deformation when being under pressure, and can play absorption pressure and buffering effect.The described second hard-pressed bale layer, 103 quality are harder, have stronger voltage endurance capability.The described first hard-pressed bale layer 102 and the second hard-pressed bale layer 103 adopt pressure-resistant material PBR.Described fiber radius 101 is roughly 0.245mm (millimeter), and the described first hard-pressed bale layer, 102 thickness are roughly 0.4mm, and the described second hard-pressed bale layer, 103 thickness are roughly 0.9mm.The interior soft outer rigid structure that the described first hard-pressed bale layer 102 and the second hard-pressed bale layer 103 constitute, when being subjected to external pressure, the miniature deformation by the first hard-pressed bale layer 102 can be good at protecting optical fiber 101 to be without prejudice.
Concrete, the described first hard-pressed bale layer 102 can adopt acrylic materials.The described second hard-pressed bale layer 103 adopts polyvinylidene fluoride material.Described first hard-pressed bale layer 102 and the described second hard-pressed bale layer 103 can adopt ultraviolet curing process to form.Wherein, the described first hard-pressed bale layer, 102 material are softer, be used for isolating or the buffering external pressure, its material is transparent, easily to optical fiber ablation, be easy to adopt ultraviolet curing process to apply, it applies diameter can be from 300 μ m～400 μ m, and suitable operating temperature range broad can reach-50 degrees centigrade～80 degrees centigrade.The described second hard-pressed bale layer, 3 material are harder, have the physical strength height, wear-resisting, anti-cutting, high temperature resistant, corrosion-resistant, uvioresistant, radioresistance, excellent weatherability or the like, and its temperature adaptation scope can reach-50 degrees centigrade～+ 150 degrees centigrade.Described second hard-pressed bale layer 103 and the described first hard-pressed bale layer 102 have improved the withstand voltage properties and the temperature performance of described Pressive bending resistance optical cable 100 jointly, have improved the stability of the signal transmission of described Pressive bending resistance optical cable 100.After tested, Pressive bending resistance optical cable voltage endurance capability of the present invention can reach 1000N/100mm.
The PFEP material that the described second hard-pressed bale layer 103 adopts can extrude by extrusion process and form.When this material is used for the optical cable coating, have temperature range widely, can be used for the working environment of multiple harshness and lay environment.Described optical fiber 101 can adopt anti-little curved small-bend radius optical fiber G657, and it has remarkable counter-bending ability, and bending radius can reach 15mm or 7.5mm.Crooked added losses are compared general single mode fiber and are had remarkable improvement, as radius of curvature R=15mm, and the bending loss 0.01dB/ of optical fiber 101 circle.
Seeing also Fig. 2, is the schematic cross-section of another better embodiment of Pressive bending resistance optical cable of the present invention.Described Pressive bending resistance optical cable 200 has round section, and it comprises optical fiber 201, the first hard-pressed bale layer 202, the second hard-pressed bale layer 203, the 3rd hard-pressed bale layer 204, aramid yarn 205 and the sheath 206 that from inside to outside sets gradually.The described first hard-pressed bale layer, 202 quality are softer, and described the 3rd hard-pressed bale layer 204 quality are harder, and the described second hard-pressed bale layer, 203 quality soft or hard degree are between described first hard-pressed bale layer 202 and described the 3rd hard-pressed bale layer 204.It is fine that described optical fiber 201, the first hard-pressed bale layer 202, the second hard-pressed bale layer 203 and the 3rd hard-pressed bale layer 204 constitute tight cover; the tight cover fibre of described Pressive bending resistance optical cable 200 has outer hard interior soft characteristics; miniature deformation by the first hard-pressed bale layer 202 and/or the second hard-pressed bale layer 203 can be good at ambient pressure is absorbed, thereby protection optical fiber 201 does not suffer damage.
Please consulting Fig. 3-4 simultaneously, is the schematic diagram of fabrication technology of Pressive bending resistance optical cable shown in Figure 1.Seeing also Fig. 5, is the manufacture method schematic flow sheet of Pressive bending resistance optical cable of the present invention.The manufacture method of described Pressive bending resistance optical cable comprises:
Compared to prior art, Pressive bending resistance optical cable of the present invention and manufacture method thereof have following beneficial effect with respect to common optical cable: 1, have the right-angle bending ability, efficiently solve the operating factor of memory space of optical cable in the equipment, reduce owing to optical cable line ball or the crooked optical communication signal weakening that causes of minor radius or the phenomenon of communication disruption.Small-bend radius optical fiber has remarkable bending resistance, and crooked added losses have significant the improvement (to work as bending radius: R=15mm, the bending loss of G652D optical fiber: 1.0dB/ circle than general single mode fiber; The bending loss of small-bend radius optical fiber: 0.01dB/ circle).2, better voltage endurance capability; The hard-pressed bale layer that optical cable adopts is multilayer and interior soft outer hard structure, makes optical cable when being subjected to the external force extruding, reduces and slow down the influence of external force extruding to optical fiber.Voltage endurance capability improves 2 times than ordinary optical cable.With respect to the 500N/100mm voltage endurance capability of common wire jumper cable, Pressive bending resistance optical cable can reach 1000N/100mm.3, better temperature performance.The fine working temperature of tight cover that optical cable adopted can reach-50～+ 150 ℃ (fine working temperatures of common tight cover :-20-+70 ℃).4, oversheath employing PVC/LSZH/TPU fire protection flame retarding, the gas that produces when satisfying fire or smog transparency reach the requirement more than 50%.Adopt PVC/LSZH/TPU fire proofing (the RoHS standard of compliance with environmental protection requirements) to make sheath; bending radius reaches the G.657A/B optical fiber of 15mm and 7.5mm; PBR process materials hard-pressed bale, wrapped/as directly to wrap aramid yarn protection; add the optical cable that sheath forms again, reached safety, softness, can vertically reach the requirement that little space lays.5,201.202 modes adopt UV to solidify, and 204 modes adopt extrusion process.Pressive bending resistance optical cable of the present invention have with the same being easy to of copper cable install, coiling, can minor radius installation, right-angled bend, in small box, loop.
In sum, but Pressive bending resistance optical cable of the present invention adopts the optical fiber of minor radius bending and special Pressive bending resistance (PBR) tight sleeve layer, has good bending resistance, withstand voltage properties and temperature performance.Pressive bending resistance optical cable of the present invention can substitute copper cash fully and be used for indoor laying, has the characteristic that good resistance to pressure and small-bend radius lay, can minor radius installation, right-angled bend, in small box, loop etc. and to install and to coil as copper cable, do not fear car and grind the foot-operated pressure that produces that waits.
In the change embodiment of Pressive bending resistance optical cable of the present invention; the number of plies of tight cover bag can have multiple variation; and 2 layers and 3-tier architecture being not limited to disclose in the above-mentioned embodiment; only need satisfy its quality is interior soft outer hard characteristics; effective absorption pressure when being subjected to external pressure; play buffer action, thereby protection optical fiber can not damage.
The above only is a preferable case study on implementation of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. Pressive bending resistance optical cable, it is characterized in that: comprise the optical fiber, the first hard-pressed bale layer, the second hard-pressed bale layer, aramid yarn and the sheath that set gradually from inside to outside, the described first hard-pressed bale layer quality is softer than the described second hard-pressed bale layer quality.
2. Pressive bending resistance optical cable according to claim 1 is characterized in that: described sheath is made of the fire proofing of PVC, LSZH or TPU.
3. Pressive bending resistance optical cable according to claim 1 is characterized in that: described aramid yarn is used to protect cable core, plays the tension effect.
4. Pressive bending resistance optical cable according to claim 1 is characterized in that: the described first hard-pressed bale layer material softness, be used for isolating or the buffering external pressure, and improve voltage endurance capability; The second hard-pressed bale layer material is harder, has broad construction and operating temperature range.
5. Pressive bending resistance optical cable according to claim 4 is characterized in that: the first hard-pressed bale layer adopts multi-functional acrylic materials, and the second hard-pressed bale layer adopts polyvinylidene fluoride material.
6. Pressive bending resistance optical cable according to claim 1 is characterized in that: described optical fiber is optical fiber G.657A/B.
7. Pressive bending resistance optical cable according to claim 1 is characterized in that: described fibre diameter is roughly 0.245 millimeter, and the described first hard-pressed bale layer diameter is roughly 0.4 millimeter, and the described second hard-pressed bale layer diameter is roughly 0.9 millimeter.
8. Pressive bending resistance optical cable, it is characterized in that: it has round section, comprise the optical fiber, the first hard-pressed bale layer, the second hard-pressed bale layer, the 3rd hard-pressed bale layer, aramid yarn and the sheath that set gradually from the inside to the outside, the described first hard-pressed bale layer quality is softer, described the 3rd hard-pressed bale layer quality is harder, and the described second hard-pressed bale layer quality soft or hard degree is between described first hard-pressed bale layer and described the 3rd hard-pressed bale layer.
9. Pressive bending resistance optical cable according to claim 7 is characterized in that: described first hard-pressed bale layer and the described second hard-pressed bale layer adopt ultraviolet curing process to form, and described the 3rd hard-pressed bale layer adopts extruder to extrude formation.
10. according to the manufacture method of the arbitrary described Pressive bending resistance optical cable of claim 1～7, comprising: the optical fiber unwrapping wire; Apply the first hard-pressed bale layer; Utilizing the ultraviolet curing stove to carry out the first hard-pressed bale layer solidifies; Utilize extruding machine to extrude the second hard-pressed bale layer; The fine cooling of tight cover; The fine take-up of tight cover; The fine unwrapping wire of tight cover; The aramid yarn unwrapping wire; Utilize extruding machine to extrude sheath; The sheath cooling; The optical cable take-up.
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| CN102243346A (en) * | 2011-07-13 | 2011-11-16 | 中天日立光缆有限公司 | Ultra-low loss and ultra-low temperature OPGW (optical fiber composite overhead ground wire) and production method thereof |
| CN102411182A (en) * | 2011-12-15 | 2012-04-11 | 湖北凯乐科技股份有限公司 | Dry-type optical fiber loose tube water-blocking yarn passive winding and unwinding filling device and winding and unwinding process |
| CN102590967A (en) * | 2012-04-07 | 2012-07-18 | 常熟市谷雷特机械产品设计有限公司 | Leading-in optical cable |
| CN102654614A (en) * | 2012-04-20 | 2012-09-05 | 苏州洲通光电科技有限公司 | Device for manufacturing ultra-high-strength reinforced core optical cable |
| CN103698865A (en) * | 2013-11-14 | 2014-04-02 | 江苏南方通信科技有限公司 | Production line and production technology for bonding central pipe type optical cable sleeve |
| CN113031180A (en) * | 2021-03-24 | 2021-06-25 | 武汉宏绅耀贸易有限公司 | Manufacturing and shaping processing technology of high-temperature-resistant flame-retardant optical fiber cable |
| CN114397737A (en) * | 2022-01-28 | 2022-04-26 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Aerospace optical cable assembly bending-resistant reinforcing method, optical cable assembly and verification method |
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| CN101344626A (en) * | 2007-07-09 | 2009-01-14 | 上海新时达电线电缆有限公司 | Optical fiber communication cable of following synthetic cable for elevator |
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| CN102243346A (en) * | 2011-07-13 | 2011-11-16 | 中天日立光缆有限公司 | Ultra-low loss and ultra-low temperature OPGW (optical fiber composite overhead ground wire) and production method thereof |
| CN102243346B (en) * | 2011-07-13 | 2013-06-19 | 中天日立光缆有限公司 | Ultra-low loss and ultra-low temperature OPGW (optical fiber composite overhead ground wire) and production method thereof |
| CN102411182A (en) * | 2011-12-15 | 2012-04-11 | 湖北凯乐科技股份有限公司 | Dry-type optical fiber loose tube water-blocking yarn passive winding and unwinding filling device and winding and unwinding process |
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| CN102590967A (en) * | 2012-04-07 | 2012-07-18 | 常熟市谷雷特机械产品设计有限公司 | Leading-in optical cable |
| CN102654614A (en) * | 2012-04-20 | 2012-09-05 | 苏州洲通光电科技有限公司 | Device for manufacturing ultra-high-strength reinforced core optical cable |
| CN103698865A (en) * | 2013-11-14 | 2014-04-02 | 江苏南方通信科技有限公司 | Production line and production technology for bonding central pipe type optical cable sleeve |
| CN113031180A (en) * | 2021-03-24 | 2021-06-25 | 武汉宏绅耀贸易有限公司 | Manufacturing and shaping processing technology of high-temperature-resistant flame-retardant optical fiber cable |
| CN114397737A (en) * | 2022-01-28 | 2022-04-26 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Aerospace optical cable assembly bending-resistant reinforcing method, optical cable assembly and verification method |
| CN114397737B (en) * | 2022-01-28 | 2024-05-28 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Bending-resistant reinforcement method for aerospace optical cable assembly, optical cable assembly and verification method |
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Application publication date: 20100728 |