CN104267477A - High-capacity and low-loss full-dry type optical cable - Google Patents
High-capacity and low-loss full-dry type optical cable Download PDFInfo
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- CN104267477A CN104267477A CN201410557161.0A CN201410557161A CN104267477A CN 104267477 A CN104267477 A CN 104267477A CN 201410557161 A CN201410557161 A CN 201410557161A CN 104267477 A CN104267477 A CN 104267477A
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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
- G02B6/443—Protective covering
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
-
- 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
- G02B6/4432—Protective covering with fibre reinforcements
-
- 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
- G02B6/4434—Central member to take up tensile loads
-
- 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
Abstract
The invention discloses a high-capacity and low-loss full-dry type optical cable. The high-capacity and low-loss full-dry type optical cable is characterized in that various fiber units are arranged around a center reinforcing part, the empty parts among the center reinforcing part and the fiber units are filled with waterproof ropes, then a cable core is formed, and an inner sheath, a metal armor layer and an outer sheath are arranged on the periphery of the cable core from interior to exterior in sequence, wherein each fiber unit is formed in the manner that a plurality of fibers are tightened through high-strength waterproof yarn and laid in a metal loose tube, and the fibers are rear-earth-doped single mode fibers. The high-capacity and low-loss full-dry type optical cable is compact in structure, transmission losses are effectively reduced through the rear-earth-doped single-mode fibers, and the transmission rate is increased; by means of the full-dry type design, the service life of the optical cable is prolonged, the weight of the optical cable is decreased, the performance of the optical cable is stable, the antijamming capability of the optical cable is high, and the optical cable has the wide application field.
Description
Technical field
The present invention relates to a kind of optical cable, particularly a kind of Large Copacity low-loss Full-dry optical cable, belongs to the communications field.
Background technology
Need in communication system to use optical fiber to communicate at a distance.Because the transmission range of netting twine limits, as common netting twine can only transmit more than 100 meter, CAT5E UTP cable namely 200 meters, this just constrains the long extended distance of LAN (Local Area Network) greatly.And optical fiber can transmit hundreds of kilometer, transmission frequency bandwidth, message capacity is large, good confidentiality, loss is low, compare relative to electromagnetic communication, disturb the plurality of advantages such as little and be applied to field of communication transmission by increasingly extensive, this is mainly based on advantages such as the reusability of optical fiber, the ability to work adapted under rugged surroundings, multi-functional, electromagnetism interference and high precision.Along with expanding economy, the development of network proposes new requirement to optical fiber.Transport network of future generation requires higher speed, larger capacity, lower loss, and the non-optical networking of such requirement does not belong to.
The performance of telecommunication optical fiber, mainly to three future developments, namely reduces fibre loss, improves transfer rate, expands bandwidth, reduces the non-linear of optical fiber.From fiber angle, high-speed transfer has very high requirement to dispersion, polarization mode, and present international fiber-optic transmission rate development is very fast, and 100G, 400G, even 1T, require that mating optical has more high-performance.
Solve current hypervelocity limited transmission awkward situation, the more excellent optical fiber of novel performance must be adopted, namely adopt the novel optical fiber of Insertion Loss less (promoting OSNR), useful area larger (reduction nonlinear loss), PMD value less (reducing PMD impact).
Research shows, in fibre core, the mode of doped with rare-earth elements germanium improves the refractive index of fibre core, thus and forms refringence between the clad material of pure silicon dioxide, to ensure the propagation of incident light in single-mode fiber.But owing to mixing the metal oxides such as GeO2 in sandwich layer, and Rayleigh scattering loss is increased.Theoretical and experiment shows, the loss in optical fiber mainly comes from Rayleigh scattering loss and absorption loss two parts of fiber optic materials.Mixing of simultaneous oxidation thing destroys the stability of optical fiber in protium and Y-x radiation x environment, and therefore the decay of germnium doped fiber cannot reduce further.
In order to keep fibre core and the direct refringence of covering, need the refractive index reducing covering, this usually can be realized by units such as doped with fluorine in covering.The decay of silica fibre best at present can be reduced to theoretical minimum 0.15dB/km further.
After last century, the eighties developed rare-earth ion-doped single-mode fiber manufacturing technology mid-term, the research of rare-earth-doped fiber and device aspect achieves huge progress.Rear-earth-doped special optical fiber is easy to realize high density pumping at fiber laser, amplifier and sensor, make lasing threshold low, the advantage such as perfect heat-dissipating, high-level efficiency, narrow linewidth, tunable and high performance price ratio, its core diameter size is mated with telecommunication optical fiber very much, coupling capacity and efficiency high, the integrated of Transmission Fibers and Active Optical Fiber can be formed, it is the basis realizing all optical communication, be conducive to Large Copacity, long haul communication, be one of optical fiber developing direction, be subject to most attention and progressively commercialization.
But rare earth element is numerous, add in optical fiber not identical on the transmission of light wave impact, and along with its content in quartz different, performance also varies widely.
Yb dosed optical fiber is the study hotspot be concerned by people most in current rear-earth-doped special optical fiber field, is subject to people's attention as a kind of laser medium.Yb dosed optical fiber has very wide absorption line and the absorption coefficient of Geng Gao, therefore can adopt different pump modes; And it also has very wide gain spectral (980nm ~ 1200nm); Ytterbium ion has simple two level structures, the phenomenon such as Excited-state Absorption, concentration quenching not having other doped fibers to have in theory, but high-dopant concentration YDF exists lifetime of excited state quencher, cause strong non-saturable absorption, thus affect the efficiency of Laser Devices.
The splice-losses of the optical fiber of Er ions creates all time low.But all to need to add some co-dopant, add difficulty and the manufacturing cost of manufacture.
Rare earth doped fiber, meet the transmission conditions of single-mode fiber at fibre core and inner cladding, and between interior surrounding layer, define a multimode lightguide layer, considerably increase the receptor area of pump light like this, thus obtain the flashlight of larger power, the output power of fiber laser is increased substantially.Therefore, development of new high power, long-life, small size, large-power optical fiber have boundless potential application market.Thulium doped fiber has special performance, and foreign study is comparatively ripe, and because the domestic development at thulium doped fiber is started late, technology is still not mature enough, and up to the present, high-quality thulium doped fiber almost all relies on import, and its price is very expensive.
The low loss characteristic of low loss fiber, is highly suitable for the application of extra long distance, Large Copacity, two-forty Internet Transmission.So Large Copacity low-loss class optical cable will be realized, not only innovate in fiber optic materials, manufacturing process, in cable configuration design, innovate also can have effect simultaneously.
Summary of the invention
The present invention is for avoiding deficiency that above-mentioned prior art exists, providing a kind of Large Copacity low-loss Full-dry optical cable, to reduce loss, improve transfer rate, to increase the service life, and can alleviate the weight of optical cable, thus expand range of application.
The present invention is that technical solution problem adopts following technical scheme:
The version of Large Copacity low-loss Full-dry optical cable of the present invention is: arrange the central reinforce member being positioned at center, arrange each fiber unit around described central reinforce member and fill waterproofing rope and form cable core, in the periphery of described cable core, set gradually inner sheath, metal armor layers and external sheath layer from inside to outside;
Described central reinforce member is aramid fiber rope or Carbon fibe rope;
Described fiber unit is tightened by high strength water blocking yarn by multifiber and is laid in metal Loose tube; Described optical fiber adopts to mix rare earth single-mode fiber, set gradually the primary coating layer, the UV that are formed by heat curing by organic siliconresin on described surface of mixing rare earth single-mode fiber from inside to outside and solidify polyacrylic resin cushion, and to be heating and curing the secondary coat formed by polyimide; Described rare earth single-mode fiber of mixing has fiber cores, and the surface of fiber cores has inner cladding, and the surface of inner cladding has surrounding layer;
Described inner sheath is extruded by vinyon to form;
Described metal armor layers is dredged around being formed by seizing wire;
Described external sheath layer is extruded by wearing quality linear low density polyethylene LLPE to form, and thickness is 0.5-1.8mm;
The design feature of Large Copacity low-loss Full-dry optical cable of the present invention is also: described fiber cores is for material with the silicon dioxide doped with rare-earth compound and co-dopant.
The design feature of Large Copacity low-loss Full-dry optical cable of the present invention is also: the rare-earth compound adulterated in described fiber cores is the halogenide of thulium, and the doping content of described rare-earth compound is 5000-20000ppm; Described co-dopant is germanium salt or aluminium salt, and the doping content of described co-dopant is 12000-20000ppm.
The design feature of Large Copacity low-loss Full-dry optical cable of the present invention is also: described inner cladding is the silicon dioxide covering being mixed with silicon tetrafluoride adulterant, and the content of fluorine is 10-38wt%.
The design feature of Large Copacity low-loss Full-dry optical cable of the present invention is also: described in mix rare earth single-mode fiber diameter be 8.2 ~ 9.6 microns.
Compared with the prior art, beneficial effect of the present invention is embodied in:
1, Large Copacity low-loss Full-dry optical cable of the present invention have employed and mixes rare earth fibre core and most up-to-date techniques, makes it have very wide absorption line and the absorption coefficient of Geng Gao, is beneficial to the loss realizing high power amplification He reduce transmitting procedure;
2, optical fiber secondary coat of the present invention have employed heat resistant poly acid imide material, improves the heat resistance of optical fiber, expands range of application and the field of optical fiber;
3, Large Copacity low-loss Full-dry optical cable of the present invention has fully taken into account the feature as backbone, long distance running in structural design, embodies the requirement of mechanical protection and adaptation complex environment;
4, Large Copacity low-loss Full-dry optical cable of the present invention and manufacture method thereof can adopt existing general manufacturing equipment automated production, improve work efficiency, reduce manufacturing cost.
5, Large Copacity low-loss Full-dry optical cable product minimum bending radius of the present invention is 270mm, and finished product optical fiber is at 1550nm attenuation coefficient≤0.170dB/km; 1625nm attenuation coefficient≤0.193dB/km, temperature range after stranding: install temperature-10 DEG C to+50 DEG C, transport and running temperature are-60 DEG C to+85 DEG C.
Accompanying drawing explanation
Fig. 1 is Large Copacity low-loss Full-dry optical cable structural representation of the present invention;
Fig. 2 is fiber unit structural representation in the present invention;
Fig. 3 is optical fiber structure schematic diagram in the present invention;
Number in the figure: 1 central reinforce member, 2 fiber units, 3 waterproofing rope, 4 inner sheaths, 5 metal armor layers, 6 external sheath layers; 21 optical fiber, 22 high strength water blocking yarns, 23 metal Loose tube, 211 mix rare earth single-mode fiber, 212 primary coating layers, 213 cushions, 214 2 coats, 211a fiber cores, 211b inner cladding, 211c surrounding layer.
Embodiment
See Fig. 1, in the present embodiment, the version of Large Copacity low-loss Full-dry optical cable is: arrange the central reinforce member 1 being positioned at center, arrange each fiber unit 2 around described central reinforce member 1 and fill waterproofing rope 3 and form cable core, in the periphery of described cable core, set gradually inner sheath 4, metal armor layers 5 and external sheath layer 6 from inside to outside;
Described central reinforce member 1 is aramid fiber rope or Carbon fibe rope;
Described inner sheath 4 is extruded by vinyon to form;
Described metal armor layers 5 is dredged around being formed by seizing wire;
Described external sheath layer 6 is extruded by wearing quality linear low density polyethylene LLPE to form, and thickness is 0.5-1.8mm;
As shown in Figures 2 and 3, in the present embodiment, fiber unit 2 is tightened by high strength water blocking yarn 22 by multifiber 21 and is laid in metal Loose tube 23; Described optical fiber 21 adopts to mix rare earth single-mode fiber 211, set gradually the primary coating layer 212, the UV that are formed by heat curing by organic siliconresin on described surface of mixing rare earth single-mode fiber 211 from inside to outside and solidify polyacrylic resin cushion 213, and to be heating and curing the secondary coat 214 formed by polyimide; Described rare earth single-mode fiber 211 of mixing has fiber cores 211a, and the surface of fiber cores 211a has inner cladding 211b, and the surface of inner cladding 211b has surrounding layer 211c;
In concrete enforcement, corresponding setting also comprises:
Fiber cores 211a is for material with the silicon dioxide doped with rare-earth compound and co-dopant.
The rare-earth compound adulterated in fiber cores 211a is the halogenide of thulium, and the doping content of described rare-earth compound is 5000-20000ppm; Described co-dopant is germanium salt or aluminium salt, and the doping content of described co-dopant is 12000-20000ppm.
Inner cladding 211b is the silicon dioxide covering being mixed with silicon tetrafluoride adulterant, and the content of fluorine is 10-38wt%.
The diameter mixing rare earth single-mode fiber 211 is 8.2 ~ 9.6 microns.
In the present embodiment, the manufacture method of Large Copacity low-loss Full-dry optical cable is carried out according to the following procedure:
Step one, make optical fiber according to the following procedure
A, purity oxygen is utilized to import in quartz glass bushing pipe by heat vaporized silicon tetrachloride saturated vapor and adulterant sulfur hexafluoride saturated vapor, rotate quartz glass bushing pipe and with the outer wall of the heating temperatures quartz glass bushing pipe of 1300-1800 DEG C, make the powder generated by the gaseous oxidation reaction in quartz glass bushing pipe be deposited on described quartz glass bushing pipe inwall;
B, by heat vaporized to silicon tetrachloride, rare earth compound tri-chlorination thulium, co-dopant germanium tetrachloride or aluminium choride be saturated vapor, and obtain mixed gas with the purity oxygen Homogeneous phase mixing that flow is 600-1000sccm, be passed into by described mixed gas in the quartz glass bushing pipe prepared through step a, at the temperature of 1200-1700 DEG C, oxidation reaction formation powdery deposits is attached to quartz glass bushing pipe inwall and obtains deposited tube; Described deposited tube is obtained solid rare earth doped preform through molten contraction on shrinking bar equipment; Described preform is heated to 1900-2100 DEG C, carries out wire drawing by the speed of 150-450 m/min, then mix rare earth single-mode fiber 211 through naturally cooling namely to obtain; Described rare earth single-mode fiber 211 of mixing refers to have inner cladding 211b on the surface of fiber cores 211a, has surrounding layer 211c on the surface of described inner cladding 211b;
C, mix rare earth single-mode fiber 211 for described, first the primary coating layer 212 formed by heat curing by organic siliconresin, solidify polyacrylic resin with UV again and form cushion 213 drawing, namely obtain optical fiber 21 by the polyimide secondary coat 214 formed that is heating and curing subsequently;
Step 2, making fiber unit 2
Multifiber 21 and high strength water blocking yarn 22 are imported seamed metal tube; Carry out multiple tracks drawing by drawing mould subsequently, then obtain fiber unit 2 through the traction of jaw type traction engine; Described fiber unit 2 delivers to take-up stand through traction engine, and is wound on drum; Described seamed metal tube is by the vertical bag of metal tape, then by longitudinal sealing metal Loose tube 23 of being formed of laser bonding under nitrogen protection; The die diameter of described multiple tracks drawing is φ 1.6-1.0mm; The tractive force of described jaw type traction engine is 90 ~ 110N;
Step 3, stranding
Adopt strand winder by lay ratio, multiply aramid fiber yarn or carbon fiber are that 7-12 carries out stranded, obtained central reinforce member 1; Centered by center reinforcing element 1, stranding is carried out around described central reinforce member 1 by multifiber unit 2, the pitch of stranding is than being 14-28 times of external diameter, stranding direction is left-hand, stranding gap waterproofing rope 3 fills rounding, tighten with waterstop is wrapped, the rate of putting up of waterstop is 45% ~ 50% again, obtained cable core;
Step 4, making inner sheath, metal armor layers and external sheath layer
Adopt in the periphery of described cable core inner sheath squash type extruder to extrude vinyon, and at the temperature of 60-70 DEG C, dry formation inner sheath 4; Dredge around formation metal armor layers 5 at the periphery seizing wire of described inner sheath 4, armouring direction is left-hand, and the monofilament laying tension of seizing wire controls to be 6 ~ 8kg; To adopt in the periphery of metal armor layers 5 external sheath layer squash type extruder to extrude wearing quality linear low density polyethylene LLPE and form external sheath layer 6.
The manufacture method of described Large Copacity low-loss Full-dry optical cable, is characterized in that:
Described inner sheath squash type extruder is followed successively by each district of die orifice from charging aperture: machine barrel three district that machine barrel two district that machine barrel one district that the charging aperture that temperature is 90 ± 5 DEG C, temperature are 120 ± 5 DEG C, temperature are 140 ± 5 DEG C, temperature are 160 ± 5 DEG C, temperature to be machine barrel four district, the temperature of 180 ± 5 DEG C the be machine neck of 185 ± 5 DEG C and temperature are the die orifice of 180 ± 5 DEG C; The first bosh being in die exit position adopts temperature to be the warm water cooling of 50 ± 5 DEG C, and all the other boshes are normal-temperature water cooling;
Described external sheath layer squash type extruder is followed successively by each district of die orifice from charging aperture: machine barrel three district that machine barrel two district that machine barrel one district that the charging aperture that temperature is 110 ± 5 DEG C, temperature are 140 ± 5 DEG C, temperature are 160 ± 5 DEG C, temperature are 180 ± 5 DEG C, temperature to be machine barrel four district, the temperature of 200 ± 5 DEG C the be machine neck of 200 ± 5 DEG C and temperature are the die orifice of 210 ± 5 DEG C; The first bosh being in die orifice position adopts temperature to be the warm water cooling of 50 ± 5 DEG C, and all the other boshes are normal-temperature water cooling.
Cable configuration of the present invention and performance index are as listed in table 1
Table 1
Large Copacity low-loss Full-dry optical cable of the present invention, as can be seen from the numerical value such as physical dimension, performance index of upper table, compared with optical cable of the same type, it has less physical dimension and good performance index, thus substantially increase the transmission capacity of optical cable and ensure that the stability of Signal transmissions, in structural design and in the selection of material, expand range of operation of the present invention.
Claims (5)
1. a Large Copacity low-loss Full-dry optical cable, it is characterized in that: the central reinforce member (1) being positioned at center is set, arrange each fiber unit (2) around described central reinforce member (1) and fill waterproofing rope (3) and form cable core, in the periphery of described cable core, set gradually inner sheath (4), metal armor layers (5) and external sheath layer (6) from inside to outside;
Described central reinforce member (1) is aramid fiber rope or Carbon fibe rope;
Described fiber unit (2) is tightened by high strength water blocking yarn (22) by multifiber (21) and is laid in metal Loose tube (23); Described optical fiber (21) adopts to mix rare earth single-mode fiber (211), set gradually the primary coating layer (212), the UV that are formed by heat curing by organic siliconresin from inside to outside to solidify polyacrylic resin cushion (213) on described surface of mixing rare earth single-mode fiber (211), and to be heating and curing the secondary coat (214) formed by polyimide; Described rare earth single-mode fiber (211) of mixing has fiber cores (211a), and the surface of fiber cores (211a) has inner cladding (211b), the surface of inner cladding (211b) has surrounding layer (211c);
Described inner sheath (4) is extruded by vinyon to form;
Described metal armor layers (5) is dredged around being formed by seizing wire;
Described external sheath layer (6) is extruded by wearing quality linear low density polyethylene LLPE to form, and thickness is 0.5-1.8mm.
2. Large Copacity low-loss Full-dry optical cable according to claim 1, is characterized in that: described fiber cores (211a) is for material with the silicon dioxide doped with rare-earth compound and co-dopant.
3. Large Copacity low-loss Full-dry optical cable according to claim 2, is characterized in that: in described fiber cores (211a), the rare-earth compound of doping is the halogenide of thulium, and the doping content of described rare-earth compound is 5000-20000ppm; Described co-dopant is germanium salt or aluminium salt, and the doping content of described co-dopant is 12000-20000ppm.
4. Large Copacity low-loss Full-dry optical cable according to claim 1, is characterized in that: described inner cladding (211b) is for being mixed with the silicon dioxide covering of silicon tetrafluoride adulterant, and the content of fluorine is 10-38wt%.
5. Large Copacity low-loss Full-dry optical cable according to claim 1, is characterized in that: described in mix rare earth single-mode fiber (211) diameter be 8.2 ~ 9.6 microns.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410557161.0A CN104267477A (en) | 2014-10-20 | 2014-10-20 | High-capacity and low-loss full-dry type optical cable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410557161.0A CN104267477A (en) | 2014-10-20 | 2014-10-20 | High-capacity and low-loss full-dry type optical cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114706178A (en) * | 2022-02-25 | 2022-07-05 | 宏安集团有限公司 | Light and safe all-dielectric self-supporting overhead leading-in optical cable |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026910A (en) * | 1983-07-23 | 1985-02-09 | Sumitomo Electric Ind Ltd | Optical fiber core |
| JPS6110044A (en) * | 1984-06-25 | 1986-01-17 | Sumitomo Electric Ind Ltd | Production of fiber for optical transmission |
| CN1564033A (en) * | 2004-03-29 | 2005-01-12 | 烽火通信科技股份有限公司 | Double cladding rare-earth doped optical fiber and its mfg. method |
| CN202159168U (en) * | 2011-07-25 | 2012-03-07 | 长飞光纤光缆有限公司 | Netted armored optical cable |
| CN102662220A (en) * | 2012-05-15 | 2012-09-12 | 珠海汉胜科技股份有限公司 | Loosely sleeved layer-stranded full-dry optical cable and manufacturing method thereof |
| EP2767520A2 (en) * | 2013-02-19 | 2014-08-20 | Teldor Cables & Systems Ltd | Dual-color coating of optical fibers with uv curable inks |
-
2014
- 2014-10-20 CN CN201410557161.0A patent/CN104267477A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026910A (en) * | 1983-07-23 | 1985-02-09 | Sumitomo Electric Ind Ltd | Optical fiber core |
| JPS6110044A (en) * | 1984-06-25 | 1986-01-17 | Sumitomo Electric Ind Ltd | Production of fiber for optical transmission |
| CN1564033A (en) * | 2004-03-29 | 2005-01-12 | 烽火通信科技股份有限公司 | Double cladding rare-earth doped optical fiber and its mfg. method |
| CN202159168U (en) * | 2011-07-25 | 2012-03-07 | 长飞光纤光缆有限公司 | Netted armored optical cable |
| CN102662220A (en) * | 2012-05-15 | 2012-09-12 | 珠海汉胜科技股份有限公司 | Loosely sleeved layer-stranded full-dry optical cable and manufacturing method thereof |
| EP2767520A2 (en) * | 2013-02-19 | 2014-08-20 | Teldor Cables & Systems Ltd | Dual-color coating of optical fibers with uv curable inks |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114706178A (en) * | 2022-02-25 | 2022-07-05 | 宏安集团有限公司 | Light and safe all-dielectric self-supporting overhead leading-in optical cable |
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Application publication date: 20150107 |