CN101641626A - Optical cable - Google Patents
Optical cable Download PDFInfo
- Publication number
- CN101641626A CN101641626A CN200880009503A CN200880009503A CN101641626A CN 101641626 A CN101641626 A CN 101641626A CN 200880009503 A CN200880009503 A CN 200880009503A CN 200880009503 A CN200880009503 A CN 200880009503A CN 101641626 A CN101641626 A CN 101641626A
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- Prior art keywords
- cable
- optical
- trunk
- optical cable
- fiber
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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
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/4472—Manifolds
- G02B6/4475—Manifolds with provision for lateral branching
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Provided is an optical cable of which the branching operation at a site can be easily performed and which doesn't need a junction box. The optical cable comprises (1) line parts each having a main optical cable in which main line optical fibers are contained and a branched optical cable which is formed integrally with the main optical cable and in which one or more branched optical fibers are contained and (2) branched parts where the branched optical fiber and the desired one among the main line optical fibers are connected to each other. The line parts and the branched parts are arranged alternately to each other.
Description
Technical field
The present invention relates to a kind of optical cable, wherein trunk cable is provided with the branch line optical cable, and described branch line fiber optic cable configuration one-tenth is introduced cable with the user and is connected.
Background technology
Along with popularizing rapidly of the Internet, the information content increases gradually.Therefore, the speed of information communication improves gradually.In recent years, develop and have jumbo bi-directional light net.Especially, the service of having carried out that Fiber to the home (FTTH), this service provides high-speed communication service by via optical fiber common carrier directly being connected with each household., the demand of optical cable is increased gradually, trunk cable is provided with single core or multicore lateral fiber to realize being connected between the introducing cable with subscriber household in this optical cable for this reason.
The open No.7-128554 of the uncensored patented claim of Japan has disclosed a kind of optical cable example.In disclosed optical cable, with multicore cable (trunk cable) and few core cable together around the tension member twisted and with binding colligation integratedly together.The length of cable is corresponding to common distribution span in 100～300m scope.Tie point in terminal box links together many optical cables and arranges.In terminal box, low fiber-count cable links to each other with the optical fiber of trunk cable.
Yet in this optical cable, few core cable can't be introduced cable with the user and directly link to each other.Like this, link to each other, must from low fiber-count cable, pull out optical fiber and connect optical fiber in order to make low fiber-count cable and user introduce cable.Like this, separated time expends time in.In addition, must will take in the terminal box that is used for low fiber-count cable and introduces the optical fiber coupling part of cable and be connected to cable body, and then need be used for the installing space of terminal box.
The open No.7-128554 of [patent documentation 1] Japanese uncensored patented claim
Summary of the invention
The technical matters that solves
The purpose of this invention is to provide a kind of optical cable of being convenient to on-the-spot separated time and not needing terminal box.
Technical scheme
In order to achieve the above object, a kind of optical cable is provided, comprises: (1) circuit pack, it comprises trunk cable and branch line optical cable, described trunk cable has been taken in many trunk fiber, and described branch line optical cable and described trunk cable are provided with integratedly and have taken in single or many lateral fibers; And (2) component, state desired in lateral fiber and a described many trunk fiber trunk fiber in described component place and link together.Described circuit pack and described component are alternately arranged.
In optical cable of the present invention, preferably described component is coated with protective sleeve.Described protective sleeve can be following any: heat-shrinkable tube, the cable sheathing of making by plastic resin of splitting sheath and excising from described trunk cable.Preferably described component has the external diameter external diameter about equally with the main line cable, and described protective sleeve has extension, and described lateral fiber is drawn by described extension.
Preferably, except that described many trunk fiber, described trunk cable also comprises cushion and cable sheathing, and described cable sheathing coats described many trunk fiber and described cushion.Described component can be by compression or excise in the space that described cushion forms and take in the optical fiber coupling part.In described cable sheathing, can be embedded with tension member.
Optical connector can be seated in the end of the branch line optical cable in the described component outside.Described optical connector can be detachably fixed on the described trunk cable.Can protect member so that described optical connector extends along described trunk cable by twining, thereby protect described optical connector around described optical connector.Preferably, the optical fiber of the optical fiber of described trunk cable and described branch line optical cable links together by cross connection in described branching portion office.
Beneficial effect
According to the present invention, be useful on the component that the user introduces cable owing on described optical cable, set in advance, therefore need not the on-the-spot described branch line optical cable of from described optical cable, pulling out.Can shorten the activity duration that is used for described introducing cable is connected to user terminal significantly.In addition, according to the present invention,, therefore can reduce the size of described component owing to need not terminal box in the space that the optical fiber coupling part is accommodated in the described trunk cable.Therefore, can be convenient to cable installs.
Description of drawings
Fig. 1 is the side view that illustrates according to the optical cable of first embodiment of the invention.
Fig. 2 is the sectional view that illustrates according to the circuit pack of the optical cable of first embodiment.
Fig. 3 is the side view that illustrates according to the modified example of the circuit pack of the optical cable of first embodiment.
Fig. 4 is the sectional view that illustrates according to the modified example of the circuit pack of the optical cable of first embodiment.
Fig. 5 is the partial section that illustrates according to the component of the optical cable of first embodiment.
Fig. 6 is the partial section that illustrates according to the modified example of the component of the optical cable of first embodiment.
Fig. 7 is the partial section that illustrates according to another modified example of the component of the optical cable of first embodiment.
The part of Fig. 8 (A), partly (B) and part (C) are the concept maps of example of optical fiber type of attachment that the branching portion office of optical cable of the present invention is shown.
Fig. 9 is the side view that illustrates according to the optical cable of second embodiment of the invention.
Figure 10 illustrates the concept map that comprises according to the light distribution that is used for custom system of the optical cable of second embodiment.
Figure 11 is the concept map that illustrates according to the preferred embodiment of the optical cable of second embodiment of the invention.
Figure 12 is the diagram of first modified example that the component of optical cable of the present invention is shown, and wherein part (A) is the partial section along the axial intercepting of optical cable, partly (B) be along with the sectional view of the axial vertical planar interception of optical cable.
Figure 13 is the side view of second modified example that the component of optical cable of the present invention is shown.
Embodiment
Various embodiments of the present invention are described below with reference to the accompanying drawings.Accompanying drawing provides for purposes of illustration, does not limit the scope of the invention.In the accompanying drawings, identical symbolic representation components identical and omit repeat specification.Dimension scale among the figure may not be accurate.
Fig. 1 is the side view that illustrates according to the optical cable of first embodiment of the invention.Optical cable 24 comprises the circuit pack 23 and the component 10 (10a, 10b, 10c, 10d) of arranged alternate.
Fig. 2 is the sectional view of the circuit pack 23 of optical cable 24.Circuit pack 23 comprises trunk cable 1 and branch line optical cable 6, and this trunk cable 1 has been taken in many trunk fiber 3, and this branch line optical cable 6 is provided with integratedly with trunk cable 1 and has taken in single or many lateral fibers 7.In trunk cable 1, many trunk fiber 3 and cushion 4 are coated with the cable sheathing 2 of trunk cable 1.Tension member 5 is embedded in the cable sheathing 2.In branch line optical cable 6, lateral fiber 7 and anti-position member 8 are coated with cable sheathing 9.
Select as another kind, optical cable can be accommodated in many trunk fiber 3 in the cable sheathing and not fill cushion 4 therein according to the desired specification of trunk cable.In addition, can omit tension member 5.
Fig. 3 and Fig. 4 are side view and the sectional views that the modified example of the circuit pack in the optical cable 24 is shown.Optical cable 24 can be by binding 22 trunk cable 1 and branch line optical cable 6 to be interfixed and then incorporate optical cable.Select as another kind, can many branch line optical cable 6a～6c be fixed on the trunk cable 1 and then integrated by binding 22.
Fig. 5 is the partial section of the component 10 of optical cable 24.Alternately arrange component 10 and circuit pack 23 with predetermined length.In component 10, the cable sheathing 2 of excision trunk cable 1 and the cable sheathing 9 of branch line optical cable 6.For example optical fiber 3a (corresponding optical fiber 3a in the many trunk fiber 3) desired in lateral fiber 7 and the many trunk fiber 3 is linked together by welding.Whole component 10 is by protective sleeve 12 protections.Twine band 13 around the composition surface between protective sleeve 12 and cable sheathing, water resistance is provided thus.
When connecting optical fiber 3a and lateral fiber 7, utilize and protect optical fiber coupling part 11 such as protection members such as fiber boots by fusion.This protective sleeve comprises glass ceramics or steel wire as stiffener.The length of fiber boot is usually in the scope of 20～40mm.Because it is flexible that the fiber boot with stiffener does not have, therefore can not free bend at this place, protective sleeve place cable.When cable is crooked with small curve, will break down (for example optical fiber disconnection).For this reason, preferably the length of protective sleeve is little of being about 20mm.
When in trunk cable 1, filling cushion 4, optical fiber coupling part 11 can be accommodated in such space: promptly, can or excise the space that cushion 4 forms by compression.Thereby, can protect optical fiber coupling part 11 avoid such as in the cable installation process owing to compression or the crooked external force that causes.Select as another kind, can omit the stiffener in the fiber boot.There is not under the situation of stiffener this protective sleeve bending of can taking advantage of a situation when cable is crooked.Therefore, when cable is crooked, can break down hardly.In addition, preferably utilize belt that optical fiber coupling part 11 is fixed on tension member 5 or the cushion 4, be along the longitudinal movement with the vibration that prevents that optical fiber coupling part 11 is along the longitudinal movement or after cable is installed, cause in the cable installation process owing to gentle breeze.
The tension member 5 that can not cut off in the cable sheathing 2 that is embedded in optical cable 2 at component 10 places uses this tension member 5.Like this, even at component 10 places excisions cable sheathing or such as internals such as cushions, required tensile strength also remains unchanged.
By pulling out optical fiber 3a desired in the many trunk fiber 3, and the optical fiber 3a that is pulled out is set to carries out trunk cable 1 on welder or the mechanical connection instrument and be connected with optical fiber between the branch line optical cable 6.Therefore, preferably make optical fiber 3a in the trunk cable 1 at component 10 places, connect required length so that optical fiber 3a is pulled out optical fiber at component 10 places lax (residue length).
Fig. 6 and Fig. 7 are the partial sections of modified example that the component of optical cable 24 is shown.If the optical fiber connection failure certain number of times, and then residue length deficiency (Fig. 6) then prolongs residue length by connecting another optical fiber 14.In this case, except that cable, also need prepare optical fiber to be connected 14.Optical fiber coupling part 11 comprises tie point 11a and two points of 11b.If for optical fiber connects long (Fig. 7), then will having the optical fiber of residue length, residue length takes on every side and then with this optical fiber along the trunk cable 1 that circumferentially is wrapped in of trunk cable 1.
Fig. 8 comprises the concept map of the example of the component 10 place's trunk cables that are illustrated in optical cable 24 and the optical fiber type of attachment between the branch line optical cable.In Fig. 6, partly (A) shows the example of common connection, and partly (B) and part (C) show cross connection respectively.When using cross connection, no longer need under the situation of branch line optical cable, can be at component 10c place the upstream trunk cable be connected with the downstream trunk cable (partly (C)), and then the downstream cable can be used for another purpose at certain some place.
Fig. 9 is the side view that illustrates according to the optical cable of second embodiment of the invention.Figure 10 illustrates the concept map that comprises according to the light distribution that is used for custom system of the optical cable of second embodiment.Figure 11 is the concept map that illustrates according to the preferred embodiment of the optical cable of second embodiment of the invention.Can in advance optical connector 15 be installed to the end of branch line optical cable 6, this branch line optical cable 6 extends to the outside (Fig. 9) from each component 10 (10a, 10b, 10c, 10d).In this case, can use connector cover 20 that branch line optical cable 6 is linked to each other and non-contacting fiber (Figure 10) with introducing cable 21.When being installed to optical connector 15 on the branch line optical cable 6 in advance, thereby preferably can coat optical connector 15 (Figure 11) with screening glass 16 by around optical connector 15, twining screening glass 16.This can be for optical connector 15 provides water resistance, and can prevent that in the cable installation process optical connector 15 is hooked on the barrier and is damaged.
Figure 12 is the diagram of first modified example that the component of optical cable of the present invention is shown, and wherein part (A) is the partial section along the axial intercepting of optical cable, partly (B) be along with the sectional view of the axial vertical planar interception of optical cable.In this modified example, split sheath 17a and 17b and serve as protective sleeve 17.Split sheath 17a and the 17b that are divided into parts up and down have a plurality of kicks (coarse cut member) 18 at it respectively on respect to the composition surface of cable sheathing, thus when sheath 17a and 17b are split in installation kick 18 cable sheathing 2 of nipping.Thereby,, split sheath 17a and 17b and also can not move with respect to the cable sheathing 2 of trunk cable 1 even split sheath 17a and 17b is subjected to external force in the cable installation process.In addition, downside cover 17b is provided with the branch line optical cable and therefrom passes through to allow branch line optical cable 6 by groove 19.The band (not shown) provides water resistance to the composition surface of splitting between sheath 17a and 17b and cable sheathing 2 and 9.
Figure 13 is the side view of second modified example that the component of optical cable of the present invention is shown.In second modified example, protective sleeve 17 is of similar shape with cable sheathing 2.For connecting cut a part of cable sheathing 2 (cable sheathing 2 '), optical fiber can be used as protective sleeve 17 again.Twine the band (not shown) so that water resistance to be provided around the border between protective sleeve 17 and trunk cable 1.In addition, protective sleeve 17 has the extension (not shown), draws branch line optical cable 6 by this extension.Band seals to provide water resistance to it extension.
Industrial applicibility
Above-mentioned optical cable suitably can be applied to the light distribution of the custom system of optical communication system Employed optical cable.
Claims (12)
1. optical cable comprises:
Circuit pack, it comprises trunk cable and branch line optical cable, and described trunk cable has been taken in many trunk fiber, and described branch line optical cable and described trunk cable are provided with integratedly and have taken in single or many lateral fibers; And
Component is stated desired in lateral fiber and a described many trunk fiber trunk fiber in described component place and is linked together,
Wherein, described circuit pack and described component are alternately arranged.
2. optical cable as claimed in claim 1, wherein,
Described component is coated with protective sleeve.
3. optical cable as claimed in claim 2, wherein,
Described protective sleeve is a heat-shrinkable tube.
4. optical cable as claimed in claim 2, wherein,
Described protective sleeve is to split sheath by what plastic resin was made.
5. optical cable as claimed in claim 2, wherein,
Described protective sleeve uses the cable sheathing that excises from described trunk cable.
6. as each described optical cable in the claim 2～5, wherein,
Described component has the external diameter external diameter about equally with the main line cable, and described protective sleeve has extension, and described lateral fiber is drawn by described extension.
7. as each described optical cable in the claim 1～6, wherein,
Except that described many trunk fiber, described trunk cable also comprises cushion and cable sheathing, and described cable sheathing coats described many trunk fiber and described cushion.
8. optical cable as claimed in claim 7, wherein,
Described component is by compression or excise in the space that described cushion forms and take in the optical fiber coupling part.
9. optical cable as claimed in claim 7, wherein,
Be embedded with tension member in the described cable sheathing.
10. as each described optical cable in the claim 1～9, wherein,
Optical connector is seated in the end of the branch line optical cable in the described component outside, and described optical connector is detachably fixed on the described trunk cable.
11. optical cable as claimed in claim 10, wherein,
So that extending along described trunk cable, described optical connector protects described optical connector by twine the protection member around described optical connector.
12. as each described optical cable in the claim 1～11, wherein,
The optical fiber of the optical fiber of described trunk cable and described branch line optical cable links together by cross connection in described branching portion office.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007088131A JP2008249824A (en) | 2007-03-29 | 2007-03-29 | Optical cable |
| JP088131/2007 | 2007-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101641626A true CN101641626A (en) | 2010-02-03 |
Family
ID=39808205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880009503A Pending CN101641626A (en) | 2007-03-29 | 2008-03-26 | Optical cable |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2008249824A (en) |
| CN (1) | CN101641626A (en) |
| TW (1) | TW200842421A (en) |
| WO (1) | WO2008120623A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI682206B (en) * | 2018-12-26 | 2020-01-11 | 美商安費諾公司 | Optical cable system with branch and manufacturing method thereof |
| CN111522106A (en) * | 2019-02-01 | 2020-08-11 | 美商安费诺公司 | Optical cable system with branch and manufacturing method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108459381A (en) * | 2018-05-02 | 2018-08-28 | 浙江中特互联科技有限公司 | A kind of interior multicore MPO connects optical patchcord soon |
| WO2021178134A1 (en) * | 2020-03-06 | 2021-09-10 | Corning Research & Development Corporation | Preconnectorized distribution cable assemblies and methods of making by jacket segmentation |
| WO2022094277A1 (en) * | 2020-10-30 | 2022-05-05 | Commscope Technologies Llc | Compact cable assembly |
| US11886029B2 (en) | 2021-03-10 | 2024-01-30 | Afl Telecommunications Llc | Systems and methods of managing cables in telecommunication systems |
| WO2022226895A1 (en) | 2021-04-29 | 2022-11-03 | Corning Research & Development Corporation | Preconnectorized optical distribution cable assemblies and corresponding methods of deployment |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07128554A (en) * | 1993-10-29 | 1995-05-19 | Sumitomo Electric Ind Ltd | Optical cable |
| JPH09274122A (en) * | 1996-04-03 | 1997-10-21 | Japan Riicom:Kk | Optical cable closure |
| JPH10206706A (en) * | 1997-01-20 | 1998-08-07 | Furukawa Electric Co Ltd:The | Optical cable and optical cable line using the same |
| JPH11242144A (en) * | 1997-10-06 | 1999-09-07 | Furukawa Electric Co Ltd:The | Optical fiber cable |
| JP2003202427A (en) * | 2002-01-09 | 2003-07-18 | Furukawa Electric Co Ltd:The | Closure for drop cable connection |
| JP2003207700A (en) * | 2002-01-11 | 2003-07-25 | Fujikura Ltd | Optical cable |
| US7330621B2 (en) * | 2004-05-24 | 2008-02-12 | Corning Cable Systems Llc | Flexible optical closure and other flexible optical assemblies |
| WO2006134668A1 (en) * | 2005-06-17 | 2006-12-21 | Toyokuni Electric Cable Co., Ltd. | Fiber ribbon slotted core optical fiber trunk cable and optical communication cable regional connection method |
-
2007
- 2007-03-29 JP JP2007088131A patent/JP2008249824A/en active Pending
-
2008
- 2008-03-26 WO PCT/JP2008/055661 patent/WO2008120623A1/en active Application Filing
- 2008-03-26 CN CN200880009503A patent/CN101641626A/en active Pending
- 2008-03-28 TW TW97111531A patent/TW200842421A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI682206B (en) * | 2018-12-26 | 2020-01-11 | 美商安費諾公司 | Optical cable system with branch and manufacturing method thereof |
| CN111522106A (en) * | 2019-02-01 | 2020-08-11 | 美商安费诺公司 | Optical cable system with branch and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008249824A (en) | 2008-10-16 |
| WO2008120623A1 (en) | 2008-10-09 |
| TW200842421A (en) | 2008-11-01 |
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