CN100412591C - New type of optical cable and its producing method - Google Patents
New type of optical cable and its producing method Download PDFInfo
- Publication number
- CN100412591C CN100412591C CNB031292887A CN03129288A CN100412591C CN 100412591 C CN100412591 C CN 100412591C CN B031292887 A CNB031292887 A CN B031292887A CN 03129288 A CN03129288 A CN 03129288A CN 100412591 C CN100412591 C CN 100412591C
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- optical fiber
- stress
- optical cable
- information transmission
- transmission medium
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Abstract
The present invention mainly relates to a structure of a novel optical cable and simultaneously provides a manufacturing method for the optical cable. The present invention is characterized in that an information transmission medium, a stress bearing component and a stress dispersing component which all extend in the same direction simultaneously penetrate a through hole of an extrusion mold; meanwhile, thermoplastic plastics are extruded and poured in the through hole to form an integral sheath which wraps the three components so as to form the optical cable, wherein the information transmission medium is an optical fiber bundle which is formed by a single optical fiber or a single optical fiber assembly. The components of the optical cable are in parallel to one another without intersection, stress is uniform so as to reduce internal stress produced by the self optical cable; thereby, the stress of the optical fiber can be effectively relieved, and the information transmission performance of the optical fiber can be guaranteed.
Description
[technical field]
The present invention relates to a kind of optical cable and manufacture method thereof of novel structure, particularly a kind of optical cable that can bear various external force effects and not influence its performance because of factor of environmental variation of living in, make it can be used for the groups of building sub-district, can be used for intelligent office block, market, hotel and residential building again.
[background technology]
Along with developing rapidly of Communication in China cause, the long-distance core net optical cable construction between province and between each big city basically forms, and net optical cables such as local loop network, loop network, cable television network have also more and more caused people's attention.Existing common have usually central beam tube type optical cable (is the utility model patent of CN2326969Y as notification number), layer-stranding cable (is the utility model patent of CN2458637Y as notification number) and slotted core cable several versions such as (are the utility model patent of CN2486980Y as notification number), the optical cable of these several structures, though guarantee the performance of optical cable respectively from different angles, but its optical fiber or fibre ribbon (bundle) are placed in tight sleeve pipe, loose sleeve pipe or the skeleton grooves, the manufacturing process complexity, cable outer diameter is big, the manufacturing cost height; Be applicable to the Access Network before the groups of building distributing box, from economical and easily the aspect consider, be not suitable for being used in the groups of building distributing box between the building distributing frame and indoor; And optical fiber ablation is come out when being not easy to connect.
And because the core of optical cable is to be the optical fiber that primary raw material is made with silicon dioxide, its matter is crisp; as information transmission medium, can not use separately, must adopt the method for protection layer by layer to it; could use after promptly making optical cable, this also is the common issue with that optical cable solved of above-mentioned several structures.Even so, when optical cable can be subjected to the effect of various external force when storing, transport, lay or moving, with the variation of optical cable environment temperature of living in and the different stress that produce optical fiber of thermal expansivity of forming each parts of optical cable, these factors all can produce adverse influence to the transmission performance of optical fiber simultaneously.Publication number provides a kind of technical scheme of optical fiber ribbon cable for the application for a patent for invention of CN1384379A, put on stress on the optical fiber with buffering, it comprises that the optical fiber, one of plurality of parallel alignment arranges a stress buffer structure and a protective seam of putting side by side with optical fiber, it is characterized in that protective seam is in aggregates with optical fiber and stress buffer construction packages; Wherein the stress buffer structure has at least one pair of reinforcing element, and this reinforcing element places the both sides of this optical fiber alignment arranged side by side, and this stress buffer structure is extended along the optical fiber longitudinally; And can being copper conductor or Kev, reinforcing element draws (Kevlar) element.Even so, still there are many defectives in this structure: at first, the fibre ribbon of this optical fiber ribbon cable is made of side by side some optical fiber, when being subjected to external force, this optical cable does the time spent, because fibre ribbon part broad, can make optical cable produce twisted phenomena, certainly will make optical fiber be subjected to bigger external force (distortion and extruding) and influence its transmission performance, and has a bigger message transmission capability, need optical fiber arranged side by side just many more, the width of optical cable is also just big more, and the different parts on its Width is stressed inhomogeneous more, not only the stress buffer structure is difficult to share the suffered external force of optical cable middle part optical fiber, also is easy to generate distortion simultaneously more.Secondly, draw (Kevlar) element to hold as the copper conductor or the Kev of reinforcing element and can't stand big external force effect, particularly under outdoor built on stilts situation, the effect that climatic factors such as the wind of external environment, ice cause to optical cable, be that copper conductor or Kev draw (Kevlar) element not bear, and then must have bigger external force to be applied on the optical fiber and influence the information transmission performance of optical fiber, thereby it is only applicable to not have the occasion of big external force effect.The 3rd, in use, be subjected to the variation of environmental factor, such as day and night temperature, the expansion that can make the different optical fiber of thermal expansivity, stress buffer structure and outside the two encapsulation protective seam together be produced the varying number level, make optical cable itself produce bigger internal stress, influence the information transmission performance of optical cable; And; in manufacture process, especially in the process that optical fiber, reinforcing element is packaged together with protective seam, can produce thermal stress equally; and tend to be bigger than the thermal expansion influence that the external environment factors vary is brought, this is that this optical fiber ribbon cable self is unvanquishable equally.The 4th, this optical fiber ribbon cable of being made up of side by side multifiber though have groove between the adjacent optical fiber, because the diameter of optical fiber has only 0.25 millimeter, makes to be difficult to optical fiber is peeled off out from protective seam when connecting, and has increased difficulty to construction; Simultaneously, a plurality of grooves make again and make complexity.In addition, in this technical scheme, be Polyvinylchloride for making the material that protective seam provided; owing to during the Polyvinylchloride burning, smog can take place, produce the hydrogen halides toxic gas; cause serious consequence, this also with in bigger indoor (office building etc.) use of crowd density hides some dangers for.
[summary of the invention]
The technical assignment of the technical problem to be solved in the present invention and proposition is to overcome the existing existing deficiency of optical cable product, provide a kind of simple in structure, be suitable for multiple place and use, and can effectively alleviate the novel optical cable of the internal stress of external force and the structural factor of self generation its Effect on Performance.For this reason, the present invention takes following technical proposals:
A kind of novel optical cable, comprise the information transmission medium that serves as by simple optical fiber or by the fibre bundle that simple optical fiber set forms and be coated on sheath on the information transmission medium, it is characterized in that also being coated with in the described sheath stress load bearing component and the stress discrete part of extending in the same way with information transmission medium, described stress discrete part is two and is positioned at the information transmission medium linear expansion coefficient and the same order of magnitude of optical fiber of both sides up and down, its young's modulus in tension, crooked Young modulus is at least the Fibreglass Reinforced Plastics spare of 50GPa, described stress load bearing component is the high-tensile steel wires that a young's modulus in tension that is positioned at the stress discrete part outside is at least 190GPa, and on the line of centres that is centered close to two stress discrete part of the center of described information transmission medium and stress load bearing component.
Described novel optical cable is characterized in that described fibre bundle is arranged according to the mode of linear array by simple optical fiber to form.
Described novel optical cable is characterized in that the position between stress load bearing component and stress discrete part is a neck on the described sheath, and the position corresponding with described information transmission medium, the left and right sides of described sheath is provided with " V " shape groove.
Described novel optical cable is characterized in that described sheath made by thermoplastics.
Characteristics of the present invention are:
(1), stress load bearing component that extends in the same way with information transmission medium, with information transmission medium with sheath and stress discrete part are coated togather and become the optical cable that extends to two orthogonal directions in its cross section, even thereby the message transmission capability of increase optical cable, the face size that also can not make optical cable only extends and causes its size on this direction wide and produce twisted phenomena to a direction, guarantees that it is stressed evenly.
(2), the stress load bearing component is a high-intensity steel wire of filming, its young's modulus in tension should be more than 190GPa, and has certain flexibility, good straightness degree; The stress discrete part is that two young's modulus in tension, crooked Young modulus are all greater than the Fibreglass Reinforced Plastics spare (GFRP) of 50GPa; When external force puts on this optical cable, bear jointly by high-intensity metal stresses load bearing component and nonmetal stress discrete part: the effect of external force such as the pulling force that the high stretch modulus of stress load bearing component is subjected in the time of making optical cable be enough to bear fiber cable laying, transportation, operation, pressure, impact, bending; When built on stilts out of doors, blast, ice slush, vibration, own wt major part are also born by this metal load bearing component, fraction is born by the stress discrete part, the stress discrete part is then more in order to bear the effect of wall pressure, thereby guarantee that this optical cable is under big external force effect, optical fiber does not stress as far as possible, and properties of optical fiber cable is unaffected.In addition, because stressed member has certain flexibility and high crooked Young modulus, thereby increased the pliability of optical cable.
(3), GFRP also because of having and the thermal expansivity (10-61/ ℃) of optical fiber with the order of magnitude, when optical cable variation of ambient temperature of living in, can reduce the internal stress that optical cable self is produced; Simultaneously can also bear the internal stress that optical cable self is produced in manufacture process, thereby can effectively alleviate the stressed of optical fiber, guarantee its information transmission performance.
(4), be a neck at the position between stress load bearing component and stress discrete part on the sheath, the left and right sides of sheath has " V " shape groove, separates optical fiber and steel wire easily when optical fiber cable termination is connected, and reduces difficulty of construction, improves operating efficiency.
(5), the information transmission medium of this optical cable can be selected single mode or multimode optical fiber for use, or with single core, twin-core fiber, or with individual layer two cores (or four-core) fibre bundle, double-deck two cores (or four-core) fibre bundle, combine with stress load bearing component, stress discrete part, neck etc. and make this optical cable become asymmetric structure; Fiber number adopts on two layer of 4 core fibre Shu Zaiqi thickness direction superimposed for a long time, the width of optical cable is diminished relatively, this has just significantly reduced the phenomenon that the optical cable distortion takes place owing to the excessive easy discontinuity of optical cable width, effectively alleviate and prevention optical fiber generation internal stress, guarantee that its transmission performance is unaffected.
(6), cable jacket of the present invention made by the thermoplastics of routine, be easy to draw materials; Have the heat-resisting oxygen effect of chemical substance burn into and the fire-retardant function of ultraviolet radiation resisting, anti-environment and in polyolefin base material, add content inorganic filling, silane catalyst, an amount of antioxidant and the low-smoke non-halogen flame-retardant vinyon of carbon black, and when burning, low smoke, zero halogen, nontoxic to human body, meet current indoor security requirement.
[description of drawings]
Fig. 1～4th, the schematic cross-section of four embodiment of optical cable of the present invention.
Fig. 5 is the process flow diagram of manufacture method of the present invention.
Fig. 6 is the structural representation of the extruded mould that adopted in the manufacture method of the present invention.
Fig. 7 is that E-E among Fig. 6 is to cut-open view.
[embodiment]
Embodiment one: optical cable shown in Figure 1, its manufacturing step is a (see figure 5): respectively through steel wire actinobacillus device 51, GFRP actinobacillus device 53, put steel wire, GFRP wire reinforcement and simple optical fiber that fine device 54 emits respectively by can line apparatus 55, the extruded mould (see figure 6) of extruding machine 56, bosh 57, traction wheel 58, batch (wherein steel wire also passes through decontamination coalignment 52) by Tension Control winding and arranging device 59 at last; Therebetween, steel wire, two GFRP reinforcement, optical fiber pass four pilot holes 61,62,63,64 on the internal mold 6 at first respectively, then make steel wire pass circular hole 71 on the external mold 7, two GFRP reinforcements and optical fiber more together and pass mounting hole 73 on the external mold, and make " V " shape projection 74 in optical fiber and the mounting hole corresponding; By annular channel 8 inwardly, squeeze note low-smoke non-halogen flame-retardant vinyon between outer mold, the extrusion temperature of extruding machine is controlled at about 140 ℃, with prevent fire retardant in extrusion decomposition and lose fire-retardant effect; Thereby comprise an optical fiber 1a through the optical cable (as shown in Figure 1) that this extruded mould extrudes out, a stress load bearing component 13, two stress discrete part 14, one sheath 15, wherein stress load bearing component 13 is positioned at a side of optical fiber 11, stress discrete part 14 is positioned at the both sides of optical fiber 11, the center of optical fiber 11 is at stress load bearing component 13, on the line of centres of stress discrete part 14, this line is the axial line of symmetry of this optical cable, and in sheath 15 is wrapped in each parts, at stress load bearing component 13 and by optical fiber 11, form neck 16 between the structure that stress discrete part 14 is formed, on the sheath 15 with external mold 7 on finedraw 72 corresponding positions form a V shaped channel 17.
Wherein sheath 15 adopts commercially available low-smoke non-halogen flame-retardant vinyon (trade mark as U.S.'s union carbide corporation production is the low-smoke non-halogen flame-retardant vinyon of 1642BK, and these plastics are to add content inorganic filling, silane catalyst, antioxidant and carbon black to form in polyolefin base material); And, at the characteristics of steel wire and protective cover material adhesion difference, can adopt surface treatment such as film to increase the adhesion of itself and sheath earlier to steel wire.
According to said process, (young's modulus in tension of stress load bearing component is more than 190Gpa to select for use external diameter to be respectively 1.0～1.4 millimeters, 0.3～0.6 millimeter stress load bearing component, stress discrete part and optical fiber, the young's modulus in tension of stress discrete part, crooked Young modulus are more than 50Gpa), and its tension force is controlled at respectively about 10 newton, 5 newton, 80 gram forces, the extrusion temperature of extruding machine is controlled at about 140 ℃, makes maximum outer profile size and be 3.8 millimeters * 2.0 millimeters optical cable.Through Performance Detection, its attenuation constant is: 1310nm window 0.32～0.40dB/km, 1550nm window 0.18～0.25dB/km, and under the flat pressure test condition of 660 newton's pulling force and 1000 newton/100 millimeter the attenuation change of optical fiber less than 0.03dB/km.
Embodiment two: according to the manufacturing step of embodiment one, information transmission medium is changed to two optical fiber 1b by an optical fiber, the optical fiber unwrapping wire adopts two pay off racks, can make optical cable as shown in Figure 2, and its maximum outer profile size is 4.0 millimeters * 2.0 millimeters.Through Performance Detection, the attenuation constant of this optical cable is: 1310nm window 0.32～0.40dB/km, 1550nm window 0.18～0.25dB/km, and under the flat pressure test condition of 660 newton's pulling force and 1000 newton/100 millimeter the attenuation change of optical fiber less than 0.03dB/km.
Embodiment three: according to the step of embodiment one, information transmission medium is changed to a four-core fibre bundle 1c (this fibre bundle is that the cross section is the pencil thing of rectangle), the fibre bundle unwrapping wire adopts single fibre bundle pay off rack, the laying tension of fibre bundle 1c is controlled at about 175 gram forces, can make optical cable as shown in Figure 3, its maximum outer profile size is 6.0 millimeters * 2.0 millimeters.Through Performance Detection, the attenuation constant of this optical cable is: 1310nm window 0.32～0.40dB/km, 1550nm window 0.18～0.25dB/km, and under the flat pressure test condition of 660 newton's pulling force and 1000 newton/100 millimeter the attenuation change of optical fiber less than 0.03dB/km.
Embodiment four: according to the step of embodiment one, information transmission medium is changed to two four-core fibre bundle 1d arranged side by side on thickness direction, the fibre bundle unwrapping wire adopts two fibre bundle pay off racks, the laying tension of fibre bundle 1d is controlled at about 175 gram forces, can make optical cable as shown in Figure 4, its maximum outer profile size is 6.0 millimeters * 2.5 millimeters.Through Performance Detection, the attenuation constant of this optical cable is: 1310nm window 0.32～0.40dB/km, 1550nm window 0.18～0.25dB/km, and under the flat pressure test condition of 660 newton's pulling force and 1000 newton/100 millimeter the attenuation change of optical fiber less than 0.03dB/km.
As the method for making this optical cable, it adopts a kind of brand-new design, optical fiber neither is placed on tight sleeve pipe, in pine sleeve pipe or the skeleton grooves, neither be circular, the pancake structure, but on a production line, the information transmission medium that adopts an extruded mould will arrange as requested and extend in the same way, the stress load bearing component, the stress buffer parts once extrude in by the sheath of thermoplastics as raw material, form a complete integral body, technology is simple, and can the guarantee information transmission medium, the stress load bearing component, the stress buffer parts are consistent at its length direction, each parts is parallel mutually, do not intersect, guarantee the information transmission performance of optical cable.
Claims (4)
1. novel optical cable, comprise the information transmission medium that serves as by simple optical fiber or by the fibre bundle that simple optical fiber set forms and be coated on sheath on the information transmission medium, it is characterized in that also being coated with in the described sheath stress load bearing component and the stress discrete part of extending in the same way with information transmission medium, described stress discrete part is two and is positioned at the information transmission medium linear expansion coefficient and the same order of magnitude of optical fiber of both sides up and down, its young's modulus in tension, crooked Young modulus is at least the Fibreglass Reinforced Plastics spare of 50GPa, described stress load bearing component is the high-tensile steel wires that a young's modulus in tension that is positioned at the stress discrete part outside is at least 190GPa, and on the line of centres that is centered close to two stress discrete part of the center of described information transmission medium and stress load bearing component.
2. novel optical cable according to claim 1 is characterized in that described fibre bundle is arranged according to the mode of linear array by simple optical fiber to form.
3. novel optical cable according to claim 1, it is characterized in that the position between stress load bearing component and stress discrete part is a neck on the described sheath, the position corresponding with described information transmission medium, the left and right sides of described sheath is provided with " V " shape groove.
4. novel optical cable according to claim 1 is characterized in that described sheath made by thermoplastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031292887A CN100412591C (en) | 2003-06-10 | 2003-06-10 | New type of optical cable and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031292887A CN100412591C (en) | 2003-06-10 | 2003-06-10 | New type of optical cable and its producing method |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100843987A Division CN100419483C (en) | 2003-06-10 | 2003-06-10 | Production of optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458541A CN1458541A (en) | 2003-11-26 |
| CN100412591C true CN100412591C (en) | 2008-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031292887A Expired - Lifetime CN100412591C (en) | 2003-06-10 | 2003-06-10 | New type of optical cable and its producing method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833152A (en) * | 2010-04-28 | 2010-09-15 | 吴江市胜信光电科技有限公司 | Circulated cooling system of optical cable jacket |
| CN105988160A (en) * | 2015-02-10 | 2016-10-05 | 华为技术有限公司 | Fiber and manufacture system and method thereof |
| CN105866908A (en) * | 2016-06-08 | 2016-08-17 | 沈阳亨通光通信有限公司 | Side-slot-reinforced leading-in optical cable and production process |
| CN105929507B (en) * | 2016-06-29 | 2018-04-03 | 深圳长飞智连技术有限公司 | A kind of steel wire reinforcing element and its manufacture method with bonding coat |
| CN106199865B (en) * | 2016-07-15 | 2019-04-16 | 杭州富通通信技术股份有限公司 | Butterfly optical cable |
| JP6782112B2 (en) * | 2016-07-27 | 2020-11-11 | 古河電気工業株式会社 | How to manufacture optical fiber cable |
| CN107894638A (en) * | 2017-12-14 | 2018-04-10 | 江苏亨通光电股份有限公司 | A kind of anti-biological closed type butterfly leading in cable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6366517A (en) * | 1986-09-09 | 1988-03-25 | Sumitomo Electric Ind Ltd | Production of optical cable |
| JPH01210911A (en) * | 1988-02-19 | 1989-08-24 | Nec Corp | Polarization plane maintaining fiber |
| JPH1010384A (en) * | 1996-06-27 | 1998-01-16 | Sumitomo Electric Ind Ltd | Optical cable for subscriber |
| JPH1036715A (en) * | 1996-07-26 | 1998-02-10 | Bridgestone Corp | Cover composition for preventing pollution of color rubber for tire and its protection film |
| JP2000028877A (en) * | 1998-07-09 | 2000-01-28 | Hitachi Cable Ltd | Optical fiber drop and its production |
| JP2000113742A (en) * | 1998-10-08 | 2000-04-21 | Hitachi Cable Ltd | Metal wire composite optical fiber drop |
| JP2001311859A (en) * | 2000-04-28 | 2001-11-09 | Sumitomo Electric Ind Ltd | Self-supporting cable and its aerial wire extending method |
| CN1384379A (en) * | 2001-05-09 | 2002-12-11 | 富士康(昆山)电脑接插件有限公司 | Tape optical cable |
| CN1412589A (en) * | 2001-10-18 | 2003-04-23 | 住友电气工业株式会社 | Fibre-optical cable |
| CN2685904Y (en) * | 2003-06-17 | 2005-03-16 | 杭州富通通信技术股份有限公司 | Optical cable |
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2003
- 2003-06-10 CN CNB031292887A patent/CN100412591C/en not_active Expired - Lifetime
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6366517A (en) * | 1986-09-09 | 1988-03-25 | Sumitomo Electric Ind Ltd | Production of optical cable |
| JPH01210911A (en) * | 1988-02-19 | 1989-08-24 | Nec Corp | Polarization plane maintaining fiber |
| JPH1010384A (en) * | 1996-06-27 | 1998-01-16 | Sumitomo Electric Ind Ltd | Optical cable for subscriber |
| JPH1036715A (en) * | 1996-07-26 | 1998-02-10 | Bridgestone Corp | Cover composition for preventing pollution of color rubber for tire and its protection film |
| JP2000028877A (en) * | 1998-07-09 | 2000-01-28 | Hitachi Cable Ltd | Optical fiber drop and its production |
| JP2000113742A (en) * | 1998-10-08 | 2000-04-21 | Hitachi Cable Ltd | Metal wire composite optical fiber drop |
| JP2001311859A (en) * | 2000-04-28 | 2001-11-09 | Sumitomo Electric Ind Ltd | Self-supporting cable and its aerial wire extending method |
| CN1384379A (en) * | 2001-05-09 | 2002-12-11 | 富士康(昆山)电脑接插件有限公司 | Tape optical cable |
| CN1412589A (en) * | 2001-10-18 | 2003-04-23 | 住友电气工业株式会社 | Fibre-optical cable |
| CN2685904Y (en) * | 2003-06-17 | 2005-03-16 | 杭州富通通信技术股份有限公司 | Optical cable |
Also Published As
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| CN1458541A (en) | 2003-11-26 |
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