CN2746406Y

CN2746406Y - Optical cable structure

Info

Publication number: CN2746406Y
Application number: CN 200420057307
Authority: CN
Inventors: 林延信; 简培元; 许光邦
Original assignee: FITEK PHOTONICS CORP
Current assignee: FITEK PHOTONICS CORP
Priority date: 2004-11-16
Filing date: 2004-11-16
Publication date: 2005-12-14
Anticipated expiration: 2014-11-16

Abstract

The utility model discloses an optical cable structure, comprising an optical unit transmitting optical signals and a coating. The optical unit is coated on and outside the coating. Then an optical unit is deposed and coated by another coating. Repeated overlapping may form a multi-layer optical cable structure. Any layer or each layer is filled with high-intensity fillers. Or else, the optical cable structure is added with a center tensile member in order to strengthen tensile strength of the optical cable. The utility model, the optical cable structure, has high-tensile strength, great number of cores, and small core diameter, which can be produced by existing equipments, decrease equipments and simplify processes.

Description

Cable configuration

Technical field

The utility model relates to the cable configuration that Connectorized fiber optic cabling is produced, and it is little and hold the optical fiber of high core number to make cable configuration can reach the line footpath via different arrangement modes optical fiber.

Background technology

Since copper cash is found when being used for conduction current and voltage, after minimum loss and low price can be arranged, copper cash is just used in large quantities, continue into the present always, still, along with the progress of science and technology, the various advantages of copper cash is for this technology, do not apply already and use, use up the deficiency that remedies copper cash when the optical fiber of signal, cable configuration commonly used now below is described so just there is the scholar to develop.

See also Fig. 1, be depicted as the cable configuration of a single fiber bundle, by seeing among the figure at the many layers of the periphery of optical fiber 11 lining, at first utilize optical fibre core extrusion equipment, optical fiber 11 is added plastic packets coating 12 form optical fibre core, increase high strength fibre 14 again in these plastic packets coating 12 peripheries,, by extrusion equipment optical fibre core is covered a shell 15 and constitutes an optical cable 1 outside utilizing again at last to improve the tensile strength of optical fibre core; This kind structure is suitable for the less optical cable of core number.

See also Fig. 2, be depicted as the cable configuration of multicore number, by seeing among the figure by a bare fibre 21 through optical fibre core extrusion equipment, bare fibre 21 is added plastic overmold form an optical fibre core 22, then again several optical fibre cores 22 are utilized optical cable lining extrusion equipment that several optical fibre cores 22 are twisted into a fiber unit 23, and when twisting fibers unit 23, add high strength fibre 24 to increase the tensile strength of fiber unit 23, again a plurality of fiber units 23 are utilized the stranded equipment of optical cable to resist a body 25 stranded around a center fiber unit 23, at last, the optical cable that this is stranded is formed an optical cable 2 by a shell 26 lining that is covered of extrusion equipment again outside one, the inside cable of making a multicore number needs through an optical fibre core equipment, and extrusion equipment more then is covered optical cable, the stranded equipment of optical cable and outer by extrusion equipment a multicore count optical cable.

Prosperity along with science and technology, often an indoor optical cable institute tool fiber number also increases thereupon, therefore, how under the situation that does not increase cable outer diameter, and can increase fiber number that optical cable comprises, in fact be that everybody institute is deeply concerned, also need change, so how research and develop the optical cable of providing high core number and paid attention to by everybody according to existing equipment and technology but different one of them problems that cable configuration brought is an equipment of making optical cable.

The utility model content

When the general high core of inside cable tool commonly used of the utility model desire solution is counted, its cable outer diameter is excessive, cause and install and difficult wiring, and it is fiber optic cable plants of making low core number that existing fiber optic cable plant has many, there is no the compatible optical cable of making high core number on the normal direction, and the technology light requirement fibre core line equipment of existing structure, optical cable lining extrusion equipment, the stranded equipment of optical cable and outer by an extrusion equipment optical cable, very complexity is time-consuming again, increases cost on foot and lacks competitiveness again.

The utility model is the structure of improvement optical cable, is described as follows:

One smooth unit, this light unit is a transmitting optical signal, is optical fiber and be used for the best media of transmitting optical signal now; One filling material, this filling material must have high strength, and must bending have protection light unit again, therefore selects high-intensity high molecular polymer for use; One coating, this coating coat described smooth unit and filling material.

This light unit and filling material are to mix at random and coated by coating, and outside coating, put light unit and filling material again, and coated by another coating, and stack so repeatedly is to form the multi-level cable structure.

Specifically, the utility model provides a kind of cable configuration, and it comprises: the light unit of a transmitting optical signal; One coating, this coating coat described smooth unit; This light unit is coated by this coating forms a central core, and outside this lining central core, puts other light unit again, and coated by another coating, to form sandwich construction.

Cable configuration according to above-mentioned conception also comprises: a high strength fibre filling material, combine with described smooth unit, and this coating coats described smooth unit and filling material; This light unit and this filling material are to mix at random and coated by coating, and outside this coating, put other light unit and filling material again, and coated by another coating.

According to the cable configuration of above-mentioned conception, this light unit is that multifiber is formed; This central core contains many light unit, and in the outer multifiber that centers on of this central core; This sandwich construction is two-layer; This sandwich construction is three layers; This sandwich construction is four layers.

Via improvement of the present utility model, its advantage can be summarized as follows:

1. via cable configuration of the present utility model, utilize light unit and filling material mixing bunchy, and then the coating that is covered, repeat same structure stack so again and form a sandwich construction, this structure can make optical cable have high core number and the cable line footpath is little, because fill many high-intensity filling materials in this structure, therefore, cable configuration of the present utility model has high-tensile, possess high core number and the cable line footpath is little.

2. cable configuration of the present utility model can utilize the existing optical cable of making the few high core number of optical cable extrusion device fabrication of core number, because structure of the present utility model utilizes existing equipment to make, do not need to buy more again in addition fiber optic cable manufacturing equipment, can be applied in the existing industry at once, do not have the empty window phase of transition, reduce cost.

3. cable configuration of the present utility model has been improved complicated optical cable technology commonly used, technology commonly used at first is covered into optical fibre core with bare fibre, next again optical fibre core is made the synthetic fiber unit of collocation high strength fibre skein silk, the anti-body of opening in the center of then more a plurality of fiber units being arranged in pairs or groups again gives stranded, the last shell that is covered again forms the optical cable of a high core number, and technology of the present utility model only at first with bare fibre earlier lining one deck plastic material to become optical fibre core, when utilizing several optical fibre cores optical cable lining extrusion equipment that optical fibre core is gathered bunchy, stranded and the plastic material that is covered of collocation high strength fibre forms a single layer optical fiber unit, utilize again with sampling technology optical fibre core along stranded another layer fiber unit that form of single layer optical fiber unit peripheral arrangement, so constantly repeat to be formed by stacking the optical cable of multicore number, therefore, the utility model can utilize identical technology and reach the optical cable of multicore number, has so reduced equipment that uses and the complexity that simplifies optical cable technology.

Description of drawings

Fig. 1 and Fig. 2 are the structures that shows fiber end face commonly used.

Fig. 3 shows two-layer cable configuration of the present utility model.

Fig. 4 shows three layers of cable configuration of the present utility model.

Fig. 5 shows four layers of cable configuration of the present utility model.

Fig. 6 shows the anti-cable configuration of opening body in the utility model tool center.

1: optical cable 11: single fiber bundle 12: the plastic packets coating

14: reinforcement 15: shell

2: optical cable 21: bare fibre 22: optical fibre core

23: fiber unit 24: high strength fibre 25: the anti-body of opening in center

26: shell

3: optical cable 31: light unit 32: filling material

35: the three coatings of 34: the second coatings of 33: the first coatings

Coating 37 in 36: the four: the anti-body of opening in center

Embodiment

Work as after following conjunction with figs. is described further embodiment of the present utility model and can understand.

Optical fiber of the present utility model is to use in indoor optical fiber, fiber optic network in the past is confined between a machine room and another machine room, use the optical cable of a high core number to count reportedly defeated, and still use cable with as data transmission from machine room to each user, so transmission speed just can be limited, and is more and more flourishing and ripe along with making optical fiber technology now, make optical fiber price par day by day, therefore, utilize optical fiber, become development trend gradually as the mode that each user is connected to machine room.

To build the number of users that thing can recognize that a building comprised quite a lot of and complicated with existing, if desire realizes each user or a small group all is to use optical fiber to be connected to individual main frame with the reportedly defeated words of counting, required backbone must can hold considerable optical fibre core, and the line of this backbone footpath can not be too big, can not account for and build the object space pipeline too much and increase the difficult wiring degree, thus the utility model be should this and develop the high core number of tool and the little cable configuration in line footpath.

See also Fig. 3, be depicted as cable configuration figure of the present utility model, a kind of cable configuration comprises:

One smooth unit 31, this light unit 31 is the media as transmitting optical signal, therefore, but best light unit 31 is transmitting optical signals and can not cause weakening of signal energy on the one hand, but, this kind media can not accomplished so situation in the world, can only reduce the number of its absorption, so present employed media is an optical fiber, and the material of optical fiber is divided into glass and plastics, wherein minimum with the energy loss of glass, so the light unit 31 of the utility model most preferred embodiment is formed by multifiber.

One filling material 32; this filling material 32 is filled in described smooth unit 31 and has an effect of protection light unit 31; also provide optical cable higher tensile strength on the other hand; so filling material 32 must possess softness characteristics; and also must possess high-tensile; because optical cable is when arranging; often need bending; especially be used in when indoor; this kind situation is easy to generate especially; therefore filling material 32 must be the material of bending easily; and the tensile strength that the optical fiber bare wire generally can bear is low; so must twist together or link together by other tension material to increase tensile strength; therefore; the material that can meet above-mentioned condition is the high tenacity fibre silk; because this high tenacity fibre silk possesses the soft pliable song and has high-tensile again; therefore; the filling material 32 of high tenacity fibre silk for being adopted now; this tuftlet high tenacity fibre silk filling is in each light unit 31 and form a filling material 32 (because this assembly is not essential; but use equally among the embodiment; therefore explanation earlier can emphasize not to be to add filling material in the combination of back).

One coating is as first coating 33, second coating 34, this coating is the interface for protection, this first coating 33 is used to coat described light unit that combines 31 and filling material 32, and provide an accommodation space to hold other filling material 32 between first and

second coating

33,34, in addition, still utilize coating that light unit 31 and filling material 32 can closely be arranged, and the profile of coating is a tubulose, and this coating protection light unit 31 and filling material 32 are not subjected to the influence of external environment; And the profile of coating is to be to allow the user connect up in pipeline easily for circular or oval-shaped purpose; and for the function of protection intraware is provided; possesses intensity to provide support the plastic covering layer with defencive function so select for use; as Polyvinylchloride (polyvinyl chloride; PVC) or tygon (polyethylene, PE) low smoke and zero halogen element or Polyurethane plastic materials such as (PU) all can become the coating material of extrusion.

See also Fig. 3, Fig. 4 and Fig. 5, be depicted as the cable configuration figure of the different numbers of plies of the utility model, when system cable configuration of the present utility model, at first bare fibre is covered one deck plastic material earlier to become optical fibre core, several optical fibre cores are assembled a smooth unit 31, again a plurality of smooth unit 31 set bunchys, the coated again technology optical cable 3 of first coating 33 that be covered to form a little core number, arrange a plurality of smooth unit 31 again in these first coating, 33 peripheries, then coated again technology second coating 34 that is covered, another layer optical cable 3 structures, structure can be according to same process according to this, constantly increase the number of plies according to demand, if outside second coating 33, arrange one deck light unit 31 again, and form the 3rd layer, one deck coating that then is covered again becomes the 3rd coating 35, and become three layers optical cable 3 structures, as Fig. 4, if in the periphery of the 3rd layer of coil serving is that the 3rd coating 35 is arranged one deck light unit 31 again, and form the 4th layer, one deck coating that then is covered again becomes the 4th coating 36, and become four layers optical cable 3 structures, as Fig. 5, if structure can be folded many layers according to this, and constantly stretch out, count optical cable, and above-mentioned first coating 33 or second coating 34 can separate each layer light unit 31 and form multicore.

In order to strengthen the tensile strength of optical cable, reenter a filling material 32 therein in the structure of one deck, to strengthen the tensile strength of optical cable, also can in each layer structure, all add filling material 32 to improve the tensile strength of optical cable, be available for users to required different occasion and select for use, in addition, see also Fig. 6, can be in the ground floor structure, add the anti-body 37 of opening in a center, and open that body 37 distributes and outer again first coating 33 that is covered with fiber unit 31 is anti-round this center, then utilize above-mentioned sandwich construction to form the high-intensity multicore of a tool again and count optical cable.

Optical cable 3 structures of the present utility model can utilize the fiber plant of making few core number to make the optical fiber of high core number, optical cable 3 structures that the equipment that promptly utilizes existing equipment to make the high core number of general need just can be made, and, optical cable 3 structures of the present utility model can effectively reduce the external diameter of high core number, with the optical cable 3 that reaches the little and high core number of tool of external diameter and reduce technology.

The above only is in order to explain preferable enforcement of the present utility model; be not that attempt is done any pro forma restriction to the utility model according to this; be all have in that identical utility model spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Claims

1. cable configuration is characterized in that comprising:

The light unit of one transmitting optical signal;

One coating, this coating coat described smooth unit;

This light unit is coated by this coating forms a central core, and outside this lining central core, puts other light unit again, and coated by another coating, to form sandwich construction.

2. cable configuration as claimed in claim 1 is characterized in that also comprising:

One high strength fibre filling material combines with described smooth unit, and this coating coats described smooth unit and filling material;

This light unit and this filling material are to mix at random and coated by coating, and outside this coating, put other light unit and filling material again, and coated by another coating.

3. according to claim 1 or 2 described cable configurations, it is characterized in that this light unit is that multifiber is formed.

4. according to claim 1 or 2 described cable configurations, it is characterized in that this central core contains many light unit, and in the outer multifiber that centers on of this central core.

6. according to claim 1 or 2 described cable configurations, it is characterized in that this sandwich construction is two-layer.

7. according to claim 1 or 2 described cable configurations, it is characterized in that this sandwich construction is three layers.

8. according to claim 1 or 2 described cable configurations, it is characterized in that this sandwich construction is four layers.