CN108463756A - Multi fiber optical distribution cable for corridor installation - Google Patents

Multi fiber optical distribution cable for corridor installation Download PDF

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Publication number
CN108463756A
CN108463756A CN201680063115.2A CN201680063115A CN108463756A CN 108463756 A CN108463756 A CN 108463756A CN 201680063115 A CN201680063115 A CN 201680063115A CN 108463756 A CN108463756 A CN 108463756A
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CN
China
Prior art keywords
cable
optical fiber
fiber
oversheath
distribution
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Pending
Application number
CN201680063115.2A
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Chinese (zh)
Inventor
M·A·博克瑟
D·亨德瑞克森
P·A·威曼
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OFS Fitel LLC
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OFS Fitel LLC
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Filing date
Publication date
Application filed by OFS Fitel LLC filed Critical OFS Fitel LLC
Publication of CN108463756A publication Critical patent/CN108463756A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/47—Installation in buildings
    • G02B6/475—Mechanical aspects of installing cables in ducts or the like for buildings
    • 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
    • G02B6/441—Optical cables built up from sub-bundles
    • 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
    • G02B6/4436—Heat resistant
    • 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
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4482—Code or colour marking
    • 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
    • G02B6/4479—Manufacturing methods of optical cables
    • G02B6/4486—Protective covering

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

Fiber distribution or distribution cable of the one kind for serving multiple client places in multitenant unit (MDU) building.Cable includes more bend insensitive fibers, and every optical fiber has the coating of different colorings for identification.The sheath of flame-retardant polymer compound is pressed into around optical fiber.The sheath optical fiber for hiding coloured coating from the visual field at least part opaque enough, and the overall diameter of sheath is not greater than about 3.5mm.A kind of installation regulation of the cable by the corridor of MDU buildings is also disclosed, to reduce any negative visual impact of the installation to neighbouring observer.

Description

Multi fiber optical distribution cable for corridor installation
Cross reference to related applications
Entitled " the Low Visual that the application requires to submit on April 9th, 2015 according to 35U.S.C. § 119 (e) The U.S. Provisional Patent Application No.62/145 of Impact Multi-Fiber Microcord ", 010 priority, this application Full content is incorporated herein by reference.
Technical field
The present invention relates to the communications cables, especially multiple and different in multitenant unit (MDU) building for serving The fiber distribution cable in customer lives unit or place.
Background technology
More and more fiber optic cables are installed every year, to meet the flat occupied during multitenant unit (MDU) is built Or demand of the client in other places to fiber to the home (FTTH) communication service.These services generally include TV, phone and mutually Networking access etc..Latest developments in optical fiber and cable technique promote this installation, especially super bend insensitive fiber (BIF) (such as, for example, can from OFS Fitel, what LLC was obtainedOptical fiber) exploitation.
Nevertheless, client is increasingly sensitive relative to the visual impact of ambient enviroment to fiber optic cable installation.In fact, latent In client's meeting merely because supplier's laying cable will produce negative visual impact and refuse to install.As high bandwidth wireless takes Business becomes increasingly popular, and cable service supplier is it is ensured that almost invisible for client when it is mounted on completion.
For with minimum (if any) negative visual impact and without adding expensive moulded parts (moldings) or trimming (trim) route multifiber optical fiber to stash from widening the vision by building corridor Or channel, however it remains challenge.Currently, usually using one kind in two kinds of regulations.
In a regulation, single point of multifiber is included in common oversheath (jacket) or sheath (sheath) Match or " separated time (breakout) " cable is waiting for adhering to beside each place by fiber optic service or on the path nearby advanced Corridor wall.Example include can from OFS Fitel, what LLC was obtainedWithCable.Once It is mounted, cable just allows for work 20 years or more, and abides by all applicable laws related with smog and inflammability and rule Model.Referring to United States Patent (USP) No.7,720,338 (on May 18th, 2010) and International Publication No.WO 2014/172285 (2014 October 23), it is incorporated herein by reference.By 3MTMThe peace that company is provided with " One Pass Pathways " name It fills in regulation, optical fiber is comprised in PVC conduits (duct) or pipe, and external adhesive item is provided above with along corridor wall Adhere to conduit.
In another regulation, a branch of individual buffered optical fibers or small fiber optic cable are in the length of fiber optic bundle with rule Interval bundlees each other, and is secured on corridor wall, regardless of whether it is slow to be hidden from the open visual field that special mold part is added Wash fine or cable off.Individual unit is usually encoded by color or is identified using printable character string.In this regulation, directly Diameter, which is typically about the individual glass optical fiber of 250 microns or bigger, to be included in buffer coat or small cable structure, with It protects relatively brittle glass and ensures compliance with related smog and flammable all applicable laws and specification.
But the two regulations are not optimal.Typical distribution cable compared to it includes the diameter of optical fiber can With relatively thick.For example, wherein every optical fiber has the overall diameter of the typical 12- fiber distribution cables of 900 microns of tight buffer layers (O.D.) in 5mm to 6mm or so.Including the O.D. of the distribution cable of 12 250 microns of colored optical fibers is still in 3mm to 4mm Left and right.Therefore, the cable of installation still can be noticed by neighbouring observer.
In addition, the fiber optic bundle of the binding respectively with as low as 900 microns or 1.2mm of O.D. is by along corridor wall road By when can also be noted.As mentioned, every optical fiber in fiber optic bundle usually has different colors, therefore installation personnel It can identify optical fiber and be connected on introducing (drop) optical fiber of specified flat.Therefore, in this case, optical fiber All colored optical fibers in beam will all keep visible and contribute the negative visual impact of installation, especially if fiber optic bundle is by road By on or near the wall, ceiling or moulded parts of light color.Even if the whole color having the same of unit in fiber optic bundle, it Also due to the uneven surface of fiber optic bundle and to installation generate negative visual impact, be blocked so as to cause some surfaces.
Can be from OFS Fitel, what LLC was obtained is referred to as EZ-Bend InvisiLightTMSystem allow by using Along at place existing moulded parts, inside turning in ceiling and between the walls and between wall and moulded parts The tool of 900 micron optical fibers of routing and adherency flame-retardant plastic coating is single mounted on living by single introducing optical fiber inside turning It is first internal, it is not almost seen to make entirely to install.Referring to U.S. Patent Application Publication No.US2012/0020635 (2012 1 Months 26 days), open No.US 2012/006987 (on March 22nd, 2012) and No.US is disclosed 2012/0138214 (2012 6 The moon 7), it is all these to be all incorporated herein by reference in their entirety.
In view of the foregoing, it is still desirable to following fiber distribution or distribution cable：Including with different colours in order to knowing Other optical fiber, but route and installed through building corridor or channel in cable to provide clothes for the client in building Almost without negative visual impact after business.
Invention content
According to the present invention, one kind is for serving multiple customer units or place in multitenant unit (MDU) building Fiber distribution or distribution cable, include the bend insensitive fibers of more coatings, every optical fiber has the coating of different colours To identify optical fiber.The oversheath of flame-retardant polymer compound is suppressed with the optical fiber comprising coating, and the sheath is opaque enough The optical fiber of coloring is hidden from the visual field at least partly.The overall diameter of sheath is not more than approximation 3.5mm, is mounted to work as cable When on the routed path including corridor wall to serve customer unit or the place in MDU buildings, any of cable bears Facial vision influence is reduced or eliminated.
According to another aspect of the present invention, a kind of for installing fiber distribution or the regulation of distribution cable, the fiber distribution Or distribution cable includes providing packet for serving customer unit or place in multitenant unit (MDU) building, the regulation Distribution containing more colored optical fibers or distribution cable, wherein every optical fiber be assigned to by cable service flat or Institute, cable have diameter be not greater than about 3.5mm opaque oversheath, identification along building corridor will be by cable service Each flat or place, and link block is installed at or near each unit.Routed path is determined for cable, the road Diameter includes the wall in corridor, and cable is pasted to (tape) temporarily and stays in peace on routed path, and by the coil section of cable At the link block of dress.Apply adhesive pearl (adhesive bead) on routed path, and cable is pressed into pearl.
The cable section of coiling is placed in each link block, and the oversheath on each cable section is opened, and And the Cable fiber for being assigned to corresponding flat is identified by the color of optical fiber.One section of removal of the optical fiber that will identify that And it is terminated with the first connector.It inserts the connector into the adapter in link block, it will be from flat The one end for being introduced into cable is transmitted in link block, and the second connector in the end for introducing cable is inserted into adapter.
For a better understanding of the present invention, it is described below in conjunction with attached drawing and appended claims reference.
Description of the drawings
In figure：
Fig. 1 is the cross-sectional profiles of fiber distribution according to the present invention or distribution cable；And
The flow chart for the step of Fig. 2 is the building corridor erection code for showing the cable according to the present invention for Fig. 1.
Specific implementation mode
Fig. 1 is the cross-sectional profiles of fiber distribution according to the present invention or distribution cable 10.As described below, cable 10 is especially Suitable for being route along building corridor to serve multiple flats or the place multitenant unit (MDU) building, Without generating negative vision or aesthetics influences to neighbouring observer.Those skilled in the art can be found that cable 10 is also right Other application is particularly useful.
In the disclosed embodiment, cable 10 includes 12 coated fibers 12a, 12b ..., 12I, wherein every light Fibre can be assigned for serving the specific flat in MDU buildings.Optical fiber may include for example before one or more What face was mentioned Optical fiber, everyOptical fiber all clad and meaning with 125 micron diameters For indoor and MDU building applications.Clad be coated with by can ultraviolet light (UV) cured acrylate oligomer be made Thermosetting polymer coating 20, overall diameter (O.D.) is approximately 240 microns, and the coating is usually coloured, in light Fibre identifies every optical fiber when being comprised in multi-fiber cable (such as cable 10).IncludingThe cable of optical fiber can be with It route in corner vicinities and is disposed using traditional copper wire wiring technique.It can also be used in cable 10 unwise to being bent Feel and can be to other optical fiber of provided communication service at client.
Cable 10 have around coated fiber 12a-12I relatively soft curable internal layer 14 and around internal layer 14 compared with Hard curable outer layer 16.If layer 14, layer 16 are by UV photocurings, layer is preferably transparent (clear) or translucent, To allow enough UV energy to pass through them for solidification during manufacture cable 10.The O.D. of outer layer 16 in cable 10 It is approximately 1.35mm.The United States Patent (USP) No.7 being previously mentioned discloses the further details of layer 14, layer 16 in 720,338, should Patent is incorporated by reference into.
As mentioned, all coatings 20 with different colours, therefore setter of each in Cable fiber 12a to 12I It can identify optical fiber, be subsequently attached to the flat that the optical fiber has been assigned to.The face of coating on 12 optical fiber Color should meet industry color standard (such as TIA-598), i.e.,：It is blue, orange, green, brown, dark blue ash (slate), it is white, red, black, yellow, Purple, rose, light green (aqua).
If layer 14, layer 16 are for receiving luminous energy so that the cured purpose of layer but transparent or semitransparent, optical fiber The colouring coating 20 of 12a to 12I will be visible by outer layer 16.Therefore, according to the present invention, cable 10 be provided with it is mineral-filled, The oversheath 22 of at least partly opaque flame-retardant polymer compound, for example, by above cured transparent outer layer 16 with close Carry out the layer of the compound of pressure compacting 0.35mm thickness like 350 °F of melting temperatures.Sheath 22 not only conceals cable light from the visual field Colouring coating 20 on fine 12a-12I, so that cable 10 is fire-retardant to meet every country about the material in the communications cable Expect the regulation of composition.
Selection meets the fire safety standard of locality for the polymer compound of sheath 22, for example, the OFN in the U.S. is non- Conductivity type, OFNG be non-conductive universal or the non-conductive hoist types of OFNR or the EN 13501-6Euroclass E of European Union.It is full The example of the compound of sufficient current US standard is SmokeGuard IV 1320, it is by being located at U.S. MA, Leominster AlphaGary companies manufacture the low-smoke PVC compound comprising aluminum trihydrate.It can meet what current Euroclass was required The example of low smoke and zero halogen material is Megolon8142-NT, this is also to be filled out comprising magnesium hydroxide by what AlphaGary companies manufactured The compound of material.
It has been found that the thickness of the only 0.2mm of the sheath 22 of 12- fiber optic cables 10 will make cable disclosure satisfy that OFN types Fire safety demands, to allow cable 12 that there is the only O.D. of about 1.75mm.But in order to meet OFNR or FT-4 types peace Complete to require, it is about 2.85mm that can require the jacket thickness of approximate 0.75mm, cable O.D..Can also provide only includes four The cable of the small diameter of root, the six roots of sensation or eight optical fiber.
Other possible PVC compounds for cable jacket 22 include AlphaGary SmokeGuardTM III 1011E (being considered comprising the aluminum trihydrate filler for accounting for weight 15% to 25%) and Teknor Apex FireGuardTM 910A18 (is recognized as comprising the aluminum trihydrate filler for accounting for weight 15% to 25%).
Other low smoke and zero halogen compounds for sheath 22 include AlphaGary MegolonTM8142NT (be considered includes Account for the magnesium hydroxide of weight 60%-70%) and PolyOne ECCOHTM6638 (are recognized as including to account for weight 60%-70%'s Magnesium hydroxide).
Hydrate mineral filler (such as aluminum trihydrate Al (OH)3Or magnesium hydroxide Mg (OH)2) to account for weight approximation 10% Concentration to 70% is used, to increase the anti-flammability of plastic material.When being exposed to fire, mineral filler is released water and is steamed Gas.It can also be using other mineral fillers (such as calcium carbonate or clay) to reduce cost.The additional benefit of mineral filler is it Provide opacity for cable jacket 22.Other pigment can be added to assign specific color, for example, titanium oxide TiO2It will It assigns the bright white of cable jacket 22 and cable 10 is allowed to be merged with the surface of the Similar color of routing cable above or face Colour matching.Other pigment or colorant can be used to reduce or eliminate cable 10 the corridor wall for being incorporated into coloring or its It discloses any negative visual impact when visible interior building surface.
In addition, local fire safety regulations often require that cable is labeled with printing legend, to indicate its fire-protection rating. But any printing on cable jacket 22 can be such that cable becomes apparent from when mounted.Thus, in a preferred embodiment, line Cable sheath 22 is marked with height no more than about 1.34mm and the inking text string of shallow coloring (for example, silver color or grey).Cause This, text string can only be seen and read when relatively closely being checked by Chief Fire Officer, and a long way off without noticing of.
Cable sheathing 22 should can be attached to common wall or other internal structure tables via suitable nonpoisonous adhesive Face, for example, japanning or unvarnished timber, panelling (paneling), plasterboard (sheetrock), lath and gypsum (plaster), concrete block, brick, plaster (stucco), wallpaper and texture (texturing).Moreover, being combined in cable 10 In preceding 10-20 minutes after to pad face, installation personnel allows for repositioning cable if necessary, so as to correct mistake or Adapt to the variation with originally determined routed path.
Example
Fig. 2 shows incited somebody to action for the example of the corridor erection code of cable 10, including along corridor in MDU interior of building The correspondence flat or place that Cable fiber is connected to.
1. identification will be by all flats that cable 10 services or place.For each place, determine on corridor wall Can beside the place or neighbouring position of installation link block, and by module fix in position.Module should be as close to walking Corridor ceiling installation, and it is located at opening, one end of the introducing optical fiber of termination can be entered by the opening inside place should Module.Link block may be mounted at the top of in corridor, flat door, alternatively, it is single to may alternatively be mounted on inhabitation Near in member, door.It being penetrated for the ease of safety and quick wall, module should not be installed near wall pillar, or It is present in known to person in the wiring in wall.
2. identification cable 10 by be either permanently mounted above, routed path along corridor wall, be used in combination totally Cloth wipes path.Turning protector should be mounted on along on each turning in path.In order to merge and reduce visible with environment Degree, cable 10 can be in ceiling and wall, ceiling and apical cap (crown) moulded parts, wall and apical cap moulded parts and wall It is route in the turning of wall and door moulded parts.The path can also include the perpendicular corners formed by adjacent wall.
3. if it is necessary, then by can preassembled rising microguide pull and/or blow cable 10.
4. the free end for the cable 10 supplied is fixed on spool, and release and along the routed path identified It is interim to paste cable.The cable 10 of one meter (three feet approximate) is reserved at the determination position of each link block along the path Coil section.
5. since the end closer to fiber optic network of routed path, apply the globule of engineering adhesive along path, and And cable 10 is pressed into bead of adhesive.It alternatively, can be from the place in path if than being easier from network-side End starts cable 10 being pressed into adhesive.For those of being mounted on corridor wall link block, the cable section of coiling It is placed directly in the link block at each flat.For the module in flat, associated line Cable section, which is wound into, to be enclosed and across preassembled pipe to enter flat, and the section is placed on there in module. Repetition is noted earlier, until all coiling sections of cable 10 are placed at the link block of all units to be serviced In.
6. in the opaque cable jacket 22 of the coiling cable section in the link block by cutting unit and exposing Every Cable fiber is connected to its flat being assigned by hyaline layer 14,16, by hyaline layer 14,16, different colorings Each in optical fiber 12a to 12I will be seen that.It identifies the Cable fiber being assigned, one section of optical fiber is removed from cable section, and (splice) connector is connected in the free end of optical fiber.Optical fiber connector is inserted into the one of the adapter that can be supplied together with module It holds, and the connector of the introducing cable of the unit being located at end is inserted into the other end of adapter.
7. whole for acceptable optical signal power level and insertion loss test using known testing standard and equipment A installation.Once it is determined that whole installment works are normal, all link blocks should just remain turned-off.
Although the above indicates the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that not carrying on the back In the case of from the spirit and scope of the present invention, various changes, modification and addition can be carried out.For example, as disclosed herein, Cable 10 includes 12 optical fiber.The other embodiments of cable can have higher or lower optical fiber to count, various to adapt to The installation of scale and routing configuration.Therefore, the present invention include all this changes, modifications within the scope of following following claims and Addition.

Claims (18)

1. a kind of fiber distribution or distribution cable for serving multiple customer units or place, including：
The optical fiber of more bend-insensitives, every optical fiber have the coating of different colours to identify the optical fiber；And
The oversheath of flame-retardant polymer compound, is pressed into around optical fiber, wherein the sheath is opaque enough at least portion Divide ground from the colouring coating hidden in the visual field on optical fiber, and the overall diameter of the sheath is not more than approximation 3.5mm so as to work as institute It states cable to be route when on internal building surface to serve customer unit or place, any negative visual of the cable Influence is reduced or eliminated.
2. fiber optic cable as described in claim 1, wherein each in coated optical fiber has the outer of 240 microns of approximation Diameter.
3. fiber optic cable as described in claim 1, include around coated optical fiber, relatively soft curable internal layer and Around the harder curable outer layer of the internal layer.
4. optical fiber cable as claimed in claim 3, wherein the internal layer and the outer layer are all transparent or semitransparent, with Enough luminous energy is allowed to pass through the layer to cure the layer during the manufacture of the cable.
5. fiber optic cable as described in claim 1, wherein forming the compound of the oversheath and being used for the cable ties The nonpoisonous adhesive for closing building walls or other structures surface is compatible, and the body structure surface includes japanning or unvarnished wood At least one of material, panelling, plasterboard, gypsum, concrete block, brick, plaster, wallpaper and texture.
6. optical fiber cable as described in claim 1, wherein the oversheath includes low-smoke PVC compound.
7. optical fiber cable as described in claim 1, wherein the oversheath includes low smoke and zero halogen material.
8. fiber optic cable as described in claim 1, wherein the thickness of the oversheath is not greater than about 0.35mm.
9. fiber optic cable as described in claim 1, wherein the oversheath includes concentration range be account for weight approximation 10% to 70%, be selected from magnesium hydroxide Mg (OH)2With aluminum trihydrate Al (OH)3Mineral filler in the middle.
10. fiber optic cable as described in claim 1, wherein the oversheath includes the mineral in calcium carbonate and clay Filler.
11. fiber optic cable as described in claim 1 is used for wherein the oversheath includes pigment or colorant by the line Cable with the cable is along the wall of installation or other surfaces are merged or color-match.
12. fiber optic cable as described in claim 1, wherein the oversheath is labeled with printing legend, to indicate the line The fire safety grade of cable.
13. fiber optic cable as claimed in claim 12, wherein the printing legend include height no more than about 1.34mm Black light color text string so that only can just see when being watched at relatively near distance and read the text string.
14. a kind of for installing fiber distribution or distribution cable by the corridor in building with multiple into the building Flat or place provide the regulation of communication service, including：
The distribution comprising more colored optical fibers or distribution cable are provided, every colored optical fiber is assigned to will be by the cable service Flat or place, the cable have outer diameter be not more than approximation 3.5mm opaque sheath；
Identification will be by each flat of the cable service or place along corridor, and is installed at or near each unit Link block；
Routed path of the cable on the wall in the corridor is determined in such a way, is pacified to work as the cable Any negative visual impact of the cable to neighbouring observer is reduced when on the path；
It pastes the cable temporarily on the routed path, and leaves the coiling area of cable at the position for the module installed Section；
Apply adhesive pearl along the pad face of identified routed path, and the cable is pressed into the pearl, so that described Cable is attached to the pad face；
The cable section is placed in each link block at or near each unit；
The opaque sheath of the cable section in each link block is opened, and corresponding list is assigned to identify by color The Cable fiber of member；
One section of removal of the optical fiber that will identify that terminates the optical fiber with connector, and the connector is inserted into mounted on described In adapter in link block；And
So that one end of introducing cable is passed into the link block from the unit, and the introducing cable is in the end Connector be inserted into the adapter.
15. regulation as claimed in claim 14, including the oversheath of the cable is made to colour, with the routed path The pad face matching or fusion.
16. regulation as claimed in claim 14 is included in corner's installation cable bend protection of identified routed path Device.
17. regulation as claimed in claim 14 is included in test signal power level and insertion loss in entire installation.
18. regulation as claimed in claim 17 includes the peace when the completion cable passes through the corridor of the building All link blocks are closed when dress.
CN201680063115.2A 2016-08-31 2016-08-31 Multi fiber optical distribution cable for corridor installation Pending CN108463756A (en)

Applications Claiming Priority (1)

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PCT/US2016/049555 WO2018044284A1 (en) 2016-08-31 2016-08-31 Multi-fiber optical distribution cable for hallway installations

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CN108463756A true CN108463756A (en) 2018-08-28

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CN (1) CN108463756A (en)
CA (1) CA3023296C (en)
WO (1) WO2018044284A1 (en)

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