WO2010104132A1 - 接続部の補強方法及び補強構造 - Google Patents
接続部の補強方法及び補強構造 Download PDFInfo
- Publication number
- WO2010104132A1 WO2010104132A1 PCT/JP2010/054052 JP2010054052W WO2010104132A1 WO 2010104132 A1 WO2010104132 A1 WO 2010104132A1 JP 2010054052 W JP2010054052 W JP 2010054052W WO 2010104132 A1 WO2010104132 A1 WO 2010104132A1
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- WIPO (PCT)
- Prior art keywords
- reinforcing
- tube
- jacket
- optical fiber
- optical cable
- Prior art date
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Classifications
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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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2558—Reinforcement of splice joint
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3616—Holders, macro size fixtures for mechanically holding or positioning fibres, e.g. on an optical bench
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
- G02B6/3688—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier using laser ablation
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
- G02B6/3692—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier with surface micromachining involving etching, e.g. wet or dry etching steps
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
- G02B6/3684—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier
- G02B6/3696—Mechanical coupling means for mounting fibres to supporting carriers characterised by the manufacturing process of surface profiling of the supporting carrier by moulding, e.g. injection moulding, casting, embossing, stamping, stenciling, printing, or with metallic mould insert manufacturing using LIGA or MIGA techniques
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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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
- G02B6/3802—Assembly tools, e.g. crimping tool or pressing bench
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
- G02B6/3803—Adjustment or alignment devices for alignment prior to splicing
- G02B6/3805—Adjustment or alignment devices for alignment prior to splicing with a fibre-supporting member inclined to the bottom surface of the alignment means
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
- G02B6/3806—Semi-permanent connections, i.e. wherein the mechanical means keeping the fibres aligned allow for removal of the fibres
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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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
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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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
- G02B6/3846—Details of mounting fibres in ferrules; Assembly methods; Manufacture with fibre stubs
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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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3887—Anchoring optical cables to connector housings, e.g. strain relief features
- G02B6/3889—Anchoring optical cables to connector housings, e.g. strain relief features using encapsulation for protection, e.g. adhesive, molding or casting resin
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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
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
- G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
Definitions
- the present invention relates to a reinforcing method and a reinforcing structure for a connecting portion in which optical fiber core wires are connected to each other.
- a reinforcing member for an optical fiber fusion connection part in which a reinforcing rod and a heat-meltable tube are housed in a heat-shrinkable tube.
- a fusion splicing portion housing member having a structure in which a fusion splicing portion holding member capable of fixing the optical drop cable and fixing the splicing splicing portion between the optical fibers led to the tip of the optical drop cable is housed in the protective member.
- a fusion splicing portion holding member is known (for example, see Patent Document 2).
- the optical fiber core wire is weak to the pulling force. Therefore, simply pulling the optical fiber core wire part with a heat-shrinkable tube along the fusion spliced part and reinforcing it, the tensile force at the reinforcing part Insufficient strength of the optical fiber, there is a possibility that a problem occurs in the fusion splicing portion between the optical fiber core wires.
- FTTH Fiber To The Home
- an optical drop cable is drawn from an optical fiber cord of an optical communication network to a subscriber of optical communication through a repeater such as a closure. If a problem occurs in the fusion splicing part between the optical fiber cores in the part, all of the optical drop cable must be redrawn, resulting in waste of the optical drop cable and its drawing operation.
- An object of the present invention is to provide a connecting portion reinforcing method and a reinforcing structure capable of reinforcing a connecting portion between optical fiber core wires with sufficient strength.
- the method of reinforcing the connection part of the present invention that can solve the above-described problem is a method of reinforcing the connection part that connects the optical fiber core wires that are extended from the jacket of the pair of optical cables,
- the connecting portion is arranged along the reinforcing member so that both ends are applied to the outer sheath of each optical cable,
- the inner tube is covered and contracted so that both ends of the outer cover of each optical cable are covered,
- the outer tube is shrunk by covering the outer periphery of the inner tube so that both ends of the outer cover of each optical cable are covered and the inner tube protrudes outward in the longitudinal direction.
- a length in a longitudinal direction of a portion of the inner tube and the outer tube covering the jacket is 7 mm or more.
- the height of the jacket arrangement region in which the jacket portion is arranged is lower than the core wire arrangement region in which the optical fiber core portion of the reinforcing member is arranged. It is preferable to do.
- a groove portion that can accommodate the outer cover is formed in an outer cover arrangement region in which the outer cover portion of the reinforcing member is arranged.
- the groove portion of the reinforcing member has a cross-sectional shape along the outer shape of the outer jacket of the optical cable.
- connection portion in the method for reinforcing a connection portion according to the present invention, it is preferable that the outer periphery of the outer tube in the connection portion is covered with a weather resistant tube.
- the reinforcing structure of the connecting portion of the present invention is a reinforcing structure of the connecting portion in which the optical fiber core wires extending from the jacket of the pair of optical cables are connected to each other, Reinforcing members laid along both ends of the outer cover of each optical cable at the connection portion;
- An inner tube that is shrunk by covering the outer periphery of the connecting portion where the reinforcing member is disposed so that both ends of the outer cover of each optical cable are covered;
- the outer tube is provided with a contracted outer tube on the outer periphery of the inner tube so that both ends of the outer sheath of each optical cable are covered and the inner tube protrudes outward in the longitudinal direction.
- a length in a longitudinal direction of a portion of the inner tube and the outer tube covering the jacket is 7 mm or more.
- the reinforcing member has a height of a jacket arrangement region in which the jacket portion is arranged with respect to a core wire arrangement region in which the optical fiber core wire portion is arranged. It is preferable to be lowered.
- connection portion reinforcing structure of the present invention it is preferable that the reinforcing member is formed with a groove portion in which the outer cover can be accommodated in an outer cover arrangement region in which the outer cover portion is arranged.
- the groove portion of the reinforcing member has a cross-sectional shape along the outer shape of the outer jacket of the optical cable.
- connection portion reinforcing structure of the present invention it is preferable that an outer periphery of the outer tube in the connection portion is covered with a weather-resistant tube.
- the connecting member is reliably reinforced by placing the reinforcing member along the connecting portion between the optical fiber cores and covering the outer periphery with the inner tube and the outer tube. be able to.
- both ends of the reinforcing member are disposed so as to cover the outer sheath of the optical cable, and both ends of the inner tube and the outer tube are respectively covered so as to cover the outer sheath of the optical cable, the optical fiber including the connecting portion is contracted.
- the reinforcing portion of the core wire portion and the outer covering portions on both sides can be integrated and strongly reinforced. Thereby, sufficient intensity
- optical cable which consists of an optical drop cable to which the reinforcement method and reinforcement structure of the connection part which concern on embodiment of this invention are applied.
- It is a perspective view of a holder used for connection between optical fiber core wires. It is a perspective view of a holder in the state where each lid was closed. It is sectional drawing of the holder in a jacket holding lid part. It is a figure explaining the structure of a holder, (a) is a top view, (b) is a side view seen from one end side, (c) is a front view, (d) is a side view seen from the other end side. is there. It is a perspective view of the fusion splicer which melt-connects optical fiber core wires.
- FIG. 1 is a cross-sectional view of an optical cable composed of an optical drop cable to which a reinforcing method and a reinforcing structure of a connection portion according to the present embodiment are applied
- FIG. 2 is a perspective view of a holder used for connecting optical fiber core wires
- FIG. 4 is a cross-sectional view of the holder in the outer cover holding lid portion
- FIG. 5 is a diagram for explaining the configuration of the holder, (a) is a plan view, (b) ) Is a side view seen from one end side, (c) is a front view, and (d) is a side view seen from the other end side.
- An optical drop cable will be described as an example of an optical cable to which the reinforcing method and the reinforcing structure of the present embodiment are applied.
- an optical cable 11 made of an optical drop cable is composed of an optical fiber core 12 covered with a protective coating 15 and a tensile body 11d vertically attached to both sides of the optical fiber core 12.
- a cable portion 11a having a rectangular cross section is provided which is embedded in a resin jacket 16 and covered in a lump.
- a support wire portion 11b having a metal wire 18 is vertically attached to the cable portion 11a.
- the cable part 11a and the support line part 11b are connected via a thin part 11c, and the cable part 11a can be separated from the support line part 11b by cutting the thin part 11c so as to cut.
- the optical fiber core wire 12 is embedded in the central portion of the cross section of the cable portion 11a, and tensile strength members 11d are embedded on both sides thereof.
- the notch 11e is formed in the front and back of this cable part 11a, and the optical fiber core wire 12 can be exposed by tearing the cable part 11a by these notches 11e.
- the holder 21 of the present embodiment holds the optical cable 11 having only the cable portion 11a by cutting the thin portion 11c and separating it from the support wire portion 11b.
- a holder (optical fiber holder) 21 used for fusion splicing between the optical fiber cores 12 will be described with reference to FIGS.
- the optical cable 11 held by the holder 21 is led out at the end thereof, and the optical fiber core wire 12 is exposed.
- the optical fiber core wire 12 is obtained by covering the glass fiber 13 with a coating 14, and is subjected to a terminal treatment to remove the coating 14, and the glass fiber 13 is exposed. Further, the protective coating 15 covering the optical fiber core wire 12 is slightly exposed from the jacket 16.
- the holder 21 that holds the end portion of the optical cable 11 that has been subjected to terminal processing in this way has a holder main body 22.
- the holder main body 22 has a sheath housing groove 23 for housing a portion of the jacket 16 of the optical cable 11 and a core housing groove 24 for housing the optical fiber core wire 12 drawn from the end of the optical cable 11 on the upper surface thereof. Is formed.
- the sheath housing groove 23 is provided with a positioning surface 25 on the core wire housing groove 24 side, and the end surface 16a of the housing 16 of the optical cable 11 housed in the sheath housing groove 23 abuts the positioning surface 25. It is supposed to be.
- a clearance groove 26 is formed around the positioning surface 25.
- a protective covering receiving groove 27 for storing the protective covering 15 slightly exposed from the covering 16 is formed between the covering receiving groove 23 and the core wire receiving groove 24.
- the holder main body 22 is provided with a core wire holding lid 31, an intermediate holding lid 32, and a jacket holding lid 33 on one side thereof.
- the core wire holding lid 31 has a hinge portion 34, and the hinge portion 34 is disposed in a holding groove 35 formed in the holder main body 22.
- the intermediate holding lid 32 also has a hinge portion 36, and this hinge portion 36 is disposed in a holding groove 37 formed in the holder main body 22.
- the holder main body 22 is provided with a connecting pin 38 that penetrates the holding grooves 37 and 35, and the connecting pin 38 is inserted into an insertion hole (not shown) formed in the hinge portions 34 and 36.
- the core wire holding lid 31 and the intermediate holding lid 32 are rotatably connected to the holder body 22 around the axis of the connecting pin 38, and the core wire holding lid 31 and the intermediate holding lid 32 are rotated.
- the core wire holding lid 31 is arranged so as to cover the upper portions of the core wire housing groove 24 and the protective coating housing groove 27 by rotating toward the upper surface side of the holder body 22.
- the intermediate holding lid 32 is disposed so as to cover the upper portion on one end side of the outer casing receiving groove 23 by rotating toward the upper surface side of the holder main body 22.
- the core wire holding lid 31 and the intermediate holding lid 32 are provided with pressing plate portions 41 and 42 made of an elastic material such as rubber on the surface facing the holder body 22.
- the pressing plate portion 41 is disposed on the upper portion of the core wire housing groove 24, and the pressing plate 42 is disposed on the upper portion of the jacket housing groove 23.
- the holder main body 22 is provided with a magnet 44 on the upper surface on the side opposite to the one side where the core wire holding lid 31 and the intermediate holding lid 32 are connected.
- the core wire holding lid 31 and the intermediate holding lid 32 come into contact with the magnet 44.
- the core wire holding lid 31 and the intermediate holding lid 32 are made of a magnetic material such as iron, so that the core wire holding lid 31 and the intermediate holding lid 32 are arranged on the upper surface of the holder body 22.
- the magnet 44 is attracted by the magnetic force.
- the jacket holding lid 33 has a hinge portion 51, and the hinge portion 51 is disposed between a pair of support protrusions 52 formed on the holder main body 22.
- An insertion hole (not shown) is formed in the hinge portion 51 of the jacket holding lid 33.
- a connection pin 53 is stretched over the support protrusion 52 of the holder body 22, and the connection pin 53 is inserted through the insertion hole of the hinge portion 51.
- the outer cover holding lid 33 is rotatably connected to the holder main body 22 around the axis of the connecting pin 53, and the upper surface of the holder main body 22 is rotated by rotating the outer cover holding lid 33. Is opened and closed.
- the jacket holding lid 33 is arranged so as to cover the upper part of the jacket housing groove 23 by rotating toward the upper surface side of the holder main body 22.
- the jacket holding lid 33 is provided with a cable pressing portion 61.
- the cable pressing portion 61 includes a pressing member 63 that is biased toward the holder main body 22 by a compression spring 62 and a pressing plate portion 64 that is attached to the surface of the pressing member 63.
- the presser plate portion 64 is formed of, for example, an elastic material such as rubber, and the presser plate portion 64 is turned into the outer cover receiving groove by rotating the outer cover holding lid 33 toward the upper surface side of the holder body 22. 23 is arranged at the top.
- the outer jacket holding lid 33 has a locking plate 71 on the side opposite to the connection side with the holder main body 22.
- the locking plate 71 is disposed between a pair of support portions 72 formed on the jacket holding lid 33, and is rotatably supported by support pins 73.
- the locking plate 71 is formed with a claw portion 74 that protrudes toward the connection side between the holder main body 22 and the outer cover holding lid 33 on the front side in the rotation direction toward the holder main body 22.
- the claw portion 74 has a taper surface 74a on the front surface in the rotational direction toward the holder body 22.
- a compression spring 75 is provided between the locking plate 71 and the outer cover holding lid 33 on the rear side in the rotation direction from the support pin 73 toward the holder main body 22.
- the stop plate 71 is urged in a direction to rotate toward the protruding direction of the claw portion 74.
- the holder main body 22 is formed with a locking claw 77 that can lock the claw portion 74 of the locking plate 71.
- the locking claw 77 has a tapered surface 77a that is gradually inclined downward in the protruding direction.
- the outer cover holding lid 33 is locked in a closed state with respect to the holder body 22 by engaging the claw portion 74 of the locking plate 71 with the locking claw 77.
- the holder 21 having the above structure is attracted to the holder main body 22 by the magnetic force of the magnet 44 to hold the portions of the optical fiber core wire 12 and the jacket 16 of the optical cable 11 and the intermediate holding lid 32.
- a jacket holding lid 33 that holds a portion of the jacket 16 of the optical cable 11 by a pressing force formed by a biasing force of the compression spring 62 stronger than the core wire holding lid 31 and the intermediate holding lid 32.
- the optical cable 11 is subjected to terminal processing. Specifically, the outer sheath 16 is removed to expose the optical fiber core wire 12 covered with the protective coating 15, and the optical fiber core wire 12 is exposed by removing the protective coating 15 while leaving a slight amount. . Then, the coating 14 of the optical fiber core wire 12 is removed by a predetermined length to expose the glass fiber 13.
- the optical cable 11 subjected to the terminal processing in this way is accommodated in the holder main body 22.
- the outer sheath 16 is accommodated in the outer sheath housing groove 23
- the protective coating 15 is accommodated in the protective sheath housing groove 27
- the optical fiber core wire 12 is accommodated in the core wire housing groove 24.
- the optical cable 11 is moved in the direction of the end, and the end surface 16 a of the outer cover 16 is abutted against the positioning surface 25. If it does in this way, optical cable 11 in which terminal processing was performed will be stored in the state where it was positioned to holder main part 22.
- a burr or the like may be formed on the edge of the end surface 16a of the outer cover 16 at the time of cutting.
- the burr formed on the end surface 16 a enters the escape groove 26 around the positioning surface 25. Therefore, the optical cable 11 can be accommodated in the holder body 22 without being affected by the burrs formed on the end surface 16 a of the outer cover 16.
- the core wire holding lid 31, the intermediate holding lid 32, and the jacket holding lid 33 are rotated and closed.
- the core wire holding lid 31 and the intermediate holding lid 32 are attracted by the magnet 44 while being arranged on the upper surface of the holder body 22.
- the optical fiber core wire 12 and the covering 14 portion are pressed and held by the pressing plate 41 of the core wire holding lid 31, and the outer jacket 16 portion is pressed by the pressing plate 42 of the intermediate holding lid 32.
- the taper surface 74 a of the claw portion 74 of the locking plate 71 comes into contact with the taper surface 77 a of the locking claw 77 of the holder main body 22 by rotating to the holder main body 22 side.
- the locking plate 71 rotates against the urging force of the compression spring 75.
- the claw portion 74 of the locking plate 71 gets over the locking claw 77, and the locking plate 71 is rotated in the reverse direction by the urging force of the compression spring 75.
- the claw portion 74 is engaged with the engagement claw 77, and the jacket holding lid 33 is locked with respect to the holder main body 22.
- the pressing plate 64 is pressed against the outer cover 16 of the optical cable 11 by the pressing member 63 biased toward the holder main body 22 by the compression spring 62. Thereby, the part of the jacket 16 of the optical cable 11 is firmly held.
- the holder 21 securely holds the optical cable 11 not only in the optical fiber core wire 12 portion but also in the outer sheath 16 portion.
- the core wire holding lid 31, the intermediate holding lid 32, and the jacket holding lid 33 are rotated in the opposite directions to open the upper surface of the holder body 22 and release the holding of the optical cable 11. good.
- the core wire holding lid 31 and the intermediate holding lid 32 are rotated in the opposite direction against the magnetic force of the magnet 44. Further, the outer cover holding lid 33 reverses after the locking state of the claw portion 74 to the locking claw 77 is released by rotating the locking plate 71 against the urging force of the compression spring 75. Rotate in the direction.
- FIG. 6 is a perspective view of the fusion splicer as viewed obliquely from above.
- the fusion splicer 101 is a device that fusion-connects the optical fiber cores 12 of the optical cable 11 at a site where construction of the optical fiber facility is performed, for example.
- the fusion splicer 101 includes a fusion processing unit 104 equipped with a pair of holder mounting units 103 to which a holder 21 holding the end of the optical cable 11 is detachably attached. Then, by attaching the holder 21 to the holder attaching portion 103, the optical fiber core wire 12 of the optical cable 11 held by each holder 21 is positioned at the fusion position.
- Each holder mounting portion 103 is mounted with a symmetrical holder 21.
- the fusion processing unit 104 includes a pair of V-groove members 109 for positioning the tip positions of the optical fiber core wires 12 extending from the holders 21 attached to the respective holder mounting portions 103, and a pair of V-groove members 109. And an electrode 113 for fusing the end faces of the glass fibers 13 of the optical fiber cores 12 that are abutted to each other by electric discharge. And in the fusion process part 104, the optical fiber core wires 12 positioned in the fusion
- the V-groove member 109 for positioning the optical fiber core 12 is dimensioned to support and position the optical fiber core wires 12 connected to each other in a straight line.
- the holder mounting portion 103 may be mounted with the holder 21 in advance. In that case, the optical cable 11 subjected to terminal processing is held in the holder 21 mounted on the holder mounting portion 103.
- the fusion processing unit 104 is opened and closed by an opening / closing cover (not shown).
- the fusion splicer 101 is a heat shrink processing unit that heats and shrinks an adhesive tube 134 and a protective tube 135, which will be described later, placed on the outer periphery of the fusion splicing portion S (see FIG. 7) between the optical fiber cores 12 with a heater. 116 is provided.
- the heat shrink processing unit 116 includes a dedicated opening / closing cover 118 and is provided adjacent to the fusion processing unit 104.
- the heat shrink processing section 116 also includes a holder mounting section 121 to which the holder 21 that holds the end of the optical cable 11 is detachably mounted. Then, by attaching the holder 21 to the holder attaching portion 121, the fusion splicing portion S between the optical fiber core wires 12 is positioned and arranged in the heat shrink processing portion 116.
- the heat shrink processing unit 116 is equipped with a heater (not shown) that heats and shrinks the adhesive tube 134 and the protective tube 135.
- the heat shrink processing unit 116 provides a heating temperature distribution to the heater so that the central portion of the adhesive tube 134 and the protective tube 135 is heated and shrunk at a high temperature and the end portion is shrunk thereafter. Thereby, bubbles generated in the adhesive tube 134 and the protective tube 135 during heating are easily removed from both ends.
- the fusion splicer 101 includes an operation unit 119 that operates the fusion processing unit 104 and the heat shrinkage processing unit 116.
- the end portions of the optical cables 11 are held by the holder 21 (see FIGS. 2 and 3).
- the adhesive tube 134 and the protective tube 135 are passed through one of the optical cables 11.
- the glass fiber 13 is cut into a predetermined length by a cutting machine to form an end face, and each holder 21 is attached to the holder attachment portion 103 of the fusion splicer 101 (FIG. 6). reference).
- the glass fiber 13 of the optical fiber core wire 12 extended from the holder 21 will be positioned by the V-groove member 109 of the fusion process part 104, and the edge part of the glass fiber 13 will be a fusion position by the electrode 113 At the end.
- the operation unit 119 of the fusion splicer 101 is operated to cause the electrode 113 to discharge, and the end faces of the glass fibers 13 of the optical fiber core wire 12 are fusion-connected.
- the core wire holding lid 31, the intermediate holding lid 32, and the outer sheath holding lid 33 of each holder 21 are opened, and the optical cable 11 is removed.
- the reinforcing member 131 is placed along the fusion splicing portion (connecting portion) S between the optical cables 11.
- the reinforcing member 131 is made of, for example, a metal such as stainless steel, glass, or ceramics.
- the reinforcing member 131 has a flat surface portion 132 and a curved surface portion 133 having an arcuate cross section. is doing.
- the flat surface portion 132 of the reinforcing member 131 has both end sides made lower than the central portion by denting both end sides toward the curved surface portion 133 with respect to the central portion.
- the central portion is a core wire placement region 132a where the optical fiber core wire 12 portion is placed, and the recessed portions on both ends are the sheath placement region 132b where the jacket 16 of the optical cable 11 is placed. Yes.
- the optical fiber core wire 12 portion including the fusion splicing portion S is disposed in the core wire arrangement region 132a of the flat portion 132 of the reinforcing member 131, and the outer sheath 16 portion is disposed in the jacket arrangement region 132b.
- an adhesive tube (inner tube) 134 made of heat-shrinkable resin having adhesiveness is slid, and as shown in FIG. 9, the adhesive tube 134 is put on the fusion splicing portion S along the reinforcing member 131. .
- the adhesive tube 134 has a length dimension L2 that is longer than the length dimension L1 of the portion of the optical fiber core wire 12 including the fusion splicing portion S. Therefore, when the adhesive tube 134 is put on the fusion splicing portion S along with the reinforcing member 131, both ends of the adhesive tube 134 are disposed over the portion of the jacket 16 of each optical cable 11.
- the opening / closing cover 118 of the heat shrink processing unit 116 is opened, and the respective optical cables 11 are held in the respective holders 21 of the heat shrink processing unit 116. If it does in this way, the fusion splicing part S of the optical fiber core wire 12 which covered the adhesion tube 134 will be positioned and arrange
- the heater is heated by operating the operation unit 119 of the fusion splicer 101. If it does in this way, the adhesion tube 134 will heat-shrink in order from the center part with a heater, and the adhesion tube 134 will closely_contact
- the optical cable 11 is removed from the holder 21 and a protective tube (outer tube) 135 made of heat-shrinkable resin is slid, and the protective tube 135 is attached to the fusion splicing portion S covered by the adhesive tube 134. Put on.
- the protective tube 135 also has a length dimension L3 that is longer than the length dimension L1 of the optical fiber core wire 12 including the fusion splicing portion S. Therefore, when the protective tube 135 is put on the fusion splicing portion S covered by the adhesive tube 134, both ends of the protective tube 135 are arranged over the outer cover 16 of each optical cable 11.
- the length L2 of the adhesive tube 134 is longer than the length L3 of the protective tube 135. Therefore, if the fusion connecting portion S covered by the adhesive tube 134 is covered with the protective tube 135, the adhesive tube 134 is bonded. Both end portions of the tube 134 protrude from the both end portions of the protective tube 135 to the outside in the longitudinal direction. Note that the projecting dimension of both ends of the adhesive tube 134 from both ends of the protective tube 135 is preferably about 0.5 to 1.0 mm.
- the heater is heated by operating the operation unit 119 of the fusion splicer 101. If it does in this way, the protection tube 135 will heat-shrink in order from the center part with a heater, and the protection tube 135 will closely_contact
- FIG. Accordingly, as shown in FIG. 11, the fusion splicing portion S between the optical fiber cores 12 of the optical cable 11 is provided with the reinforcing member 131, and is further covered and reinforced by the adhesive tube 134 and the protective tube 135 that are in close contact with each other. Is done.
- the dimension L4 that covers the jacket 16 of the adhesive tube 134 and the protective tube 135 in the longitudinal direction is as follows. 7 mm or more. That is, the lengths L2 and L3 of the adhesive tube 134 and the protective tube 135 are 7 mm in the longitudinal direction with respect to the jacket 16 of each optical cable 11 when the adhesive tube 134 and the protective tube 135 are heat-shrinked and closely adhered to the fusion splicing portion S. It is preset so as to cover the above.
- the fusion splicing portion S reinforced as described above is installed outdoors, as shown in FIG. 12, the fusion splicing portion S is covered with a weather-resistant tube 136 and thermally contracted, so that the fusion splicing portion S is provided.
- Protect S As the weather-resistant tube 136, for example, a tube made of an electron beam cross-linked soft polyolefin resin is suitable, and the fusion splicing portion S can be further well protected by the weather-resistant tube 136.
- the adhesive tube 134 and the protective tube 135 are formed of a transparent resin so that the fusion splicing portion S can be seen, the influence of ultraviolet rays can be suppressed.
- the fusion splicing portion S may be protected by wrapping a tape made of an electron beam cross-linked soft polyolefin resin to cause heat shrinkage. Further, the fusion splicing portion S may be covered with a metal cylinder or the like, and in this way, the fusion splicing portion S can be further reinforced.
- the reinforcing member 131 is placed along the fusion splicing portion S between the optical fiber cores 12, and the outer periphery thereof is bonded to the bonding tube 134 and By covering with the protective tube 135, the fusion splicing portion S can be reliably reinforced.
- both ends of the reinforcing member 131 are disposed so as to cover the outer cover 16 of the optical cable 11, and both ends of the adhesive tube 134 and the protective tube 135 are respectively covered so as to cover the outer cover 16 of the optical cable 11 and contracted.
- the reinforcing portion of the optical fiber core wire 12 including the fusion splicing portion S and the portions of the outer jacket 16 on both sides can be integrated and strongly reinforced. Thereby, sufficient intensity
- the adhesive tube 134 and the protective tube 135 can be sufficiently secured to the outer cover 16 by securing the length in the longitudinal direction of the portion of the adhesive tube 134 and the protective tube 135 covering the outer cover 16 to 7 mm or more. it can.
- the height of the jacket arrangement region 132b in which the portion of the outer jacket 16 is arranged is lower than the core wire arrangement region 132a in which the optical fiber core wire 12 portion in the reinforcing member 131 is arranged,
- the step due to the difference in the outer shape of the outer sheath 16 and the optical fiber core wire 12 in the vicinity of the end face 16a of the outer sheath 16 due to the thickness of 16 can be eliminated.
- step difference can be suppressed as much as possible.
- an optical drop cable having a rectangular cross section is described as an example of the optical cable 11 to be connected.
- the applicable optical cable 11 is not limited to the optical drop cable.
- the present invention can be applied to the case where the optical fiber core wires 12 of the optical cable 11 made of an optical fiber cord having a circular cross section are connected.
- the reinforcing member 131 used for the optical cable 11 made of an optical drop cable having a rectangular cross section conforms to the outer shape of the outer cover 16 portion of the optical cable 11 made of the optical drop cable in the outer cover placement region 132 b. It is preferable to form a groove 132c having a cross-sectional shape.
- the groove part 132c which can accommodate the part of the jacket 16 is formed in the jacket arrangement
- the mounting property of the reinforcing member 131 to the outer jacket 16 can be improved, and it can be integrated more satisfactorily.
- the positioning of the reinforcing member 131 to the fusion splicing part S can be facilitated, and the working efficiency can be improved.
- each holder 21 is detachable, but the holder 21 may be fixed to the fusion splicer 101.
- the fusion splicer 101 includes the heat shrink processing unit 116 having one heater, and the heat shrink processing unit 116 heat-shrinks the adhesive tube 134 and the protection tube 135, respectively. Two heaters may be provided at 116, and the adhesive tube 134 and the protective tube 135 may be thermally contracted by the respective heaters.
- Optical cable 12: Optical fiber core wire
- 16 Outer sheath
- 132a Core wire placement region
- 132b Outer sheath placement region
- 132c Groove
- 135 Protective tube (outer tube)
- 136 Weather-resistant tube
- S Fusion splicer (connector)
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Description
また、光ドロップケーブルの固定と光ドロップケーブル先端に口出しされた光ファイバ同士の融着接続部の固定とを行える融着接続部保持部材を保護部材内に収納した構造の融着接続部収容部材、融着接続部保持部材が知られている(例えば、特許文献2参照)。
例えば、FTTH(Fiber To The Home)などでは、光通信網の光ファイバコードからクロージャー等の中継器を介して光通信の加入者宅へ光ドロップケーブルによって引き込むこととなるが、光ドロップケーブルの端部における光ファイバ心線同士の融着接続部に不具合が生じてしまうと、光ドロップケーブルを全て引き直さなくてはならず、光ドロップケーブル及びその引き込み作業の無駄を生じてしまう。
前記接続部に、それぞれの光ケーブルの外被に両端がかかるように補強部材を沿わせて配設し、
前記補強部材を配設した前記接続部の外周に、それぞれの光ケーブルの外被に両端がかかるように内側チューブを被せて収縮させ、
前記内側チューブの外周に、それぞれの光ケーブルの外被に両端がかかるようにかつ前記内側チューブが長手方向の外側に突出するように外側チューブを被せて収縮させることを特徴とする。
前記接続部に、それぞれの光ケーブルの外被に両端がかかるように沿わされた補強部材と、
前記補強部材が配設された前記接続部の外周に、それぞれの光ケーブルの外被に両端がかかるように被せられて収縮された内側チューブと、
前記内側チューブの外周に、それぞれの光ケーブルの外被に両端がかかるようにかつ前記内側チューブが長手方向の外側に突出するように被せられて収縮された外側チューブとを備えていることを特徴とする。
特に、補強部材の両端を光ケーブルの外被にかかるように配設し、また、内側チューブ及び外側チューブの両端をそれぞれ光ケーブルの外被にかかるように被せて収縮させるので、接続部を含む光ファイバ心線部分の補強部分と両側の外被部分とを一体化させて強固に補強することができる。これにより、引っ張り力に対しても十分な強度を確保することができる。
また、内側チューブを外側チューブの長手方向の外側に突出させることにより、内側チューブの両端における外被との固着力を高めることができ、補強強度を高めることができる。
図1は本実施形態に係る接続部の補強方法及び補強構造が適用される光ドロップケーブルからなる光ケーブルの断面図、図2は光ファイバ心線同士の接続に用いられるホルダの斜視図、図3は各蓋を閉じた状態のホルダの斜視図、図4は外被保持蓋部分におけるホルダの断面図、図5はホルダの構成を説明する図であって、(a)は平面図、(b)は一端側から視た側面図、(c)は正面図、(d)は他端側から視た側面図である。
本実施形態のホルダ21は、薄肉部11cを切断して支持線部11bから分離させてケーブル部11aのみとした光ケーブル11を保持するものである。
このホルダ21に保持される光ケーブル11は、その端部において口出しされ、光ファイバ心線12が露出されている。また、光ファイバ心線12は、ガラスファイバ13を被覆14によって覆ったもので、端末処理が施されて被覆14が除去され、ガラスファイバ13が露出されている。また、光ファイバ心線12を覆う保護被覆15が外被16から僅かに露出されている。
ホルダ本体22は、その上面に、光ケーブル11の外被16の部分を収容する外被収容溝23及び光ケーブル11の端部から引き出されている光ファイバ心線12を収容する心線収容溝24が形成されている。
また、外被収容溝23と心線収容溝24との間には、外被16から僅かに露出された保護被覆15を収容する保護被覆収容溝27が形成されている。
心線保持蓋31は、ヒンジ部34を有しており、このヒンジ部34が、ホルダ本体22に形成された保持溝35に配設されている。また、中間保持蓋32も、ヒンジ部36を有しており、このヒンジ部36が、ホルダ本体22に形成された保持溝37に配設されている。
心線保持蓋31及び中間保持蓋32は、鉄などの磁性体から形成されており、これにより、心線保持蓋31及び中間保持蓋32は、ホルダ本体22の上面に配置された状態にて、磁石44の磁力によって吸着される。
このようにすると、心線保持蓋31及び中間保持蓋32は、ホルダ本体22の上面に配置された状態にて、磁石44によって吸着される。これにより、光ファイバ心線12及び被覆14部分が心線保持蓋31の押さえ板41によって押さえ付けられて保持され、また、外被16の部分が中間保持蓋32の押さえ板42によって押さえ付けられて保持される。
このとき、圧縮バネ62によってホルダ本体22側へ向かって付勢された押圧部材63によって押さえ板部64が光ケーブル11の外被16の部分に押し付けられる。これにより、光ケーブル11の外被16の部分が強固に保持される。
なお、光ケーブル11を取り外す場合は、心線保持蓋31、中間保持蓋32及び外被保持蓋33をそれぞれ逆方向へ回動させてホルダ本体22の上面を開き、光ケーブル11の保持を解除すれば良い。
図6は融着接続機の斜め上方から見た斜視図である。
図6に示すように、融着接続機101は、例えば、光ファイバ設備の工事が行われる現地にて光ケーブル11の光ファイバ心線12同士を融着接続する装置である。
この融着接続機101は、光ケーブル11の端部を保持したホルダ21が着脱可能に取り付けられる一対のホルダ装着部103を装備した融着処理部104を備えている。そして、ホルダ装着部103にホルダ21を装着することにより、それぞれのホルダ21に保持された光ケーブル11の光ファイバ心線12が融着位置に位置決めされる。なお、各ホルダ装着部103には、対称構造のホルダ21が装着される。
そして、融着処理部104では、融着位置に位置決めされた光ファイバ心線12同士を、そのガラスファイバ13部分にて熱融着して接続する。
ホルダ装着部103は、予めホルダ21を装着しておいても良い。その場合は、ホルダ装着部103に装着されているホルダ21に、端末処理を施した光ケーブル11を保持させる。
なお、融着処理部104は、不図示の開閉カバーによって開閉されるようになっている。
また、融着接続機101には、融着処理部104及び熱収縮処理部116を作動させる操作部119を備えている。
まず、互いに接続するそれぞれの光ケーブル11に端末処理を施し、光ファイバ心線12及びガラスファイバ13を露出させる。
ホルダ21に光ケーブル11を保持させたら、ガラスファイバ13を切断機で所定長さにカットして端面を成形し、それぞれのホルダ21を融着接続機101のホルダ装着部103に装着する(図6参照)。
この状態にて、融着接続機101の操作部119を操作して電極113にて放電させ、光ファイバ心線12のガラスファイバ13の端面同士を融着接続させる。
光ファイバ心線12同士を融着接続させたら、それぞれのホルダ21の心線保持蓋31、中間保持蓋32及び外被保持蓋33を開いて光ケーブル11を取り外す。
ここで、この補強部材131は、例えば、ステンレスなどの金属、あるいはガラスやセラミックスから形成されたもので、図8に示すように、平面部132と、断面視円弧状の曲面部133とを有している。この補強部材131の平面部132は、その中央部分に対して両端側を曲面部133側へ凹ませることにより、両端側が中央部分よりも低くされている。そして、中央部分は、光ファイバ心線12部分が配置される心線配置領域132aとされ、両端側の凹んだ部分は、光ケーブル11の外被16が配置される外被配置領域132bとされている。
このようにすると、接着チューブ134を被せた光ファイバ心線12の融着接続部Sが熱収縮処理部116に位置決めされて配置される。
このようにすると、保護チューブ135を被せた光ファイバ心線12の融着接続部Sが熱収縮処理部116に位置決めされて配置される。
つまり、接着チューブ134及び保護チューブ135の長さ寸法L2,L3は、熱収縮させて融着接続部Sに密着させたときに、それぞれの光ケーブル11の外被16に対して、長手方向に7mm以上被るように予め設定されている。
特に、接着チューブ134及び保護チューブ135を、融着接続部Sを目視可能とすべく透明な樹脂から形成した場合は、紫外線の影響を抑えることができる。
また、融着接続部Sを金属製の円筒などによって覆っても良く、このようにすると、より一層、融着接続部Sを強固に補強することができる。
特に、補強部材131の両端を光ケーブル11の外被16にかかるように配設し、また、接着チューブ134及び保護チューブ135の両端をそれぞれ光ケーブル11の外被16にかかるように被せて収縮させるので、融着接続部Sを含む光ファイバ心線12部分の補強部分と両側の外被16の部分とを一体化させて強固に補強することができる。これにより、引っ張り力に対しても十分な強度を確保することができる。
特に、接着チューブ134及び保護チューブ135の外被16にかかる部分の長手方向の長さを7mm以上とすることにより、外被16に対する接着チューブ134及び保護チューブ135の固着力を十分確保することができる。
また、このような溝部132cを形成することにより、融着接続部Sへの補強部材131の位置決めの容易化を図ることができ、作業効率を高めることができる。
また、上記融着接続機101では、一つのヒータを有する熱収縮処理部116を備え、この熱収縮処理部116によって、接着チューブ134及び保護チューブ135をそれぞれ熱収縮させたが、熱収縮処理部116に二つのヒータを設け、それぞれのヒータにて接着チューブ134及び保護チューブ135をそれぞれ熱収縮させても良い。
Claims (12)
- 一対の光ケーブルの外被から延出された光ファイバ心線同士を接続した接続部の補強方法であって、
前記接続部に、それぞれの光ケーブルの外被に両端がかかるように補強部材を沿わせて配設し、
前記補強部材を配設した前記接続部の外周に、それぞれの光ケーブルの外被に両端がかかるように内側チューブを被せて収縮させ、
前記内側チューブの外周に、それぞれの光ケーブルの外被に両端がかかるようにかつ前記内側チューブが長手方向の外側に突出するように外側チューブを被せて収縮させることを特徴とする接続部の補強方法。 - 請求項1に記載の接続部の補強方法であって、
前記内側チューブ及び前記外側チューブの前記外被にかかる部分の長手方向の長さを7mm以上とすることを特徴とする接続部の補強方法。 - 請求項1または2に記載の接続部の補強方法であって、
前記補強部材における前記光ファイバ心線部分が配置される心線配置領域に対して前記外被部分が配置される外被配置領域の高さを低くすることを特徴とする接続部の補強方法。 - 請求項1から3の何れか一項に記載の接続部の補強方法であって、
前記補強部材における前記外被部分が配置される外被配置領域に、前記外被が収容可能な溝部を形成することを特徴とする接続部の補強方法。 - 請求項4に記載の接続部の補強方法であって、
前記補強部材の前記溝部を、前記光ケーブルの外被の外形に沿う断面形状とすることを特徴とする接続部の補強方法。 - 請求項1から5の何れか一項に記載の接続部の補強方法であって、
前記接続部における前記外側チューブの外周を耐候性チューブによって覆うことを特徴とする接続部の補強方法。 - 一対の光ケーブルの外被から延出された光ファイバ心線同士を接続した接続部の補強構造であって、
前記接続部に、それぞれの光ケーブルの外被に両端がかかるように沿わされた補強部材と、
前記補強部材が配設された前記接続部の外周に、それぞれの光ケーブルの外被に両端がかかるように被せられて収縮された内側チューブと、
前記内側チューブの外周に、それぞれの光ケーブルの外被に両端がかかるようにかつ前記内側チューブが長手方向の外側に突出するように被せられて収縮された外側チューブとを備えていることを特徴とする接続部の補強構造。 - 請求項7に記載の接続部の補強構造であって、
前記内側チューブ及び前記外側チューブの前記外被にかかる部分の長手方向の長さが7mm以上であることを特徴とする接続部の補強構造。 - 請求項7または8に記載の接続部の補強構造であって、
前記補強部材は、前記光ファイバ心線部分が配置される心線配置領域に対して前記外被部分が配置される外被配置領域の高さが低くされていることを特徴とする接続部の補強構造。 - 請求項7から9の何れか一項に記載の接続部の補強構造であって、
前記補強部材は、前記外被部分が配置される外被配置領域に、前記外被が収容可能な溝部が形成されていることを特徴とする接続部の補強構造。 - 請求項10に記載の接続部の補強構造であって、
前記補強部材の前記溝部は、前記光ケーブルの外被の外形に沿う断面形状とされていることを特徴とする接続部の補強構造。 - 請求項7から11の何れか一項に記載の接続部の補強構造であって、
前記接続部における前記外側チューブの外周が耐候性チューブによって覆われていることを特徴とする接続部の補強構造。
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EP10750885.5A EP2407808A4 (en) | 2009-03-11 | 2010-03-10 | Method for reinforcing connection part and reinforcing structure |
US13/255,359 US9004781B2 (en) | 2009-03-11 | 2010-03-10 | Method for reinforcing a splice part and reinforcing structure |
SG2011065026A SG174310A1 (en) | 2009-03-11 | 2010-03-10 | Method for reinforcing connection part and reinforcing structure |
CN201080011906.3A CN102349012B (zh) | 2009-03-11 | 2010-03-10 | 连接部的加强方法以及加强构造 |
KR1020117021078A KR101699563B1 (ko) | 2009-03-11 | 2010-03-10 | 접속부의 보강 방법 및 보강 구조 |
AU2010222066A AU2010222066B2 (en) | 2009-03-11 | 2010-03-10 | Method for reinforcing connection part and reinforcing structure |
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JP2009058617A JP5276483B2 (ja) | 2009-03-11 | 2009-03-11 | 接続部の補強方法及び補強構造 |
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AU (1) | AU2010222066B2 (ja) |
MY (1) | MY154267A (ja) |
SG (1) | SG174310A1 (ja) |
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JP5857889B2 (ja) * | 2012-06-26 | 2016-02-10 | 住友電気工業株式会社 | 保護スリーブ |
CN202870340U (zh) * | 2012-08-30 | 2013-04-10 | 一诺仪器(威海)有限公司 | 可方便拆卸的加热槽固定夹具 |
JP5702507B2 (ja) | 2013-03-25 | 2015-04-15 | 株式会社フジクラ | 光ファイバ接続部補強加熱装置 |
US10663666B2 (en) * | 2013-12-05 | 2020-05-26 | United States Of America As Represented By The Secretary Of The Navy | Flexible, low profile kink resistant fiber optic splice tension sleeve |
JP6219518B2 (ja) * | 2014-06-30 | 2017-10-25 | 富士フイルム株式会社 | 光ファイバケーブル及びその製造方法並びにそれを備えた光源モジュール |
JP6381591B2 (ja) | 2016-08-01 | 2018-08-29 | 株式会社フジクラ | 補強構造 |
US10712519B2 (en) | 2017-06-28 | 2020-07-14 | Corning Research & Development Corporation | High fiber count pre-terminated optical distribution assembly |
US11565378B2 (en) | 2019-07-02 | 2023-01-31 | Us Conec Ltd. | Fiber handling tool with spring loaded doors |
US11086075B2 (en) * | 2019-10-30 | 2021-08-10 | Alliance Fiber Optic Products, Inc. | Fiber array units with mode-field diameter conversion, and fabrication method |
WO2021133737A1 (en) * | 2019-12-23 | 2021-07-01 | Commscope Technologies Llc | Fiber optic processing systems and methods |
CN113655571A (zh) * | 2020-05-12 | 2021-11-16 | 富晋精密工业(晋城)有限公司 | 光缆治具、光纤连接器制作方法及光纤连接器 |
WO2023227384A1 (en) * | 2022-05-26 | 2023-11-30 | Emtelle Uk Limited | Accessory for protecting spliced optical fibres, optical fibre cable assemblies, kits of parts, methods of manufacture and installation thereof |
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- 2010-03-10 WO PCT/JP2010/054052 patent/WO2010104132A1/ja active Application Filing
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- 2010-03-10 CN CN201080011906.3A patent/CN102349012B/zh active Active
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JP2009058617A (ja) | 2007-08-30 | 2009-03-19 | Kyocera Mita Corp | 現像剤補給装置及び画像形成装置 |
Also Published As
Publication number | Publication date |
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KR20110124769A (ko) | 2011-11-17 |
MY154267A (en) | 2015-05-29 |
AU2010222066B2 (en) | 2014-06-26 |
CN102349012A (zh) | 2012-02-08 |
US20120170899A1 (en) | 2012-07-05 |
JP2010211067A (ja) | 2010-09-24 |
KR101699563B1 (ko) | 2017-01-24 |
EP2407808A4 (en) | 2017-11-29 |
SG174310A1 (en) | 2011-10-28 |
CN102349012B (zh) | 2015-11-25 |
AU2010222066A1 (en) | 2011-10-06 |
JP5276483B2 (ja) | 2013-08-28 |
EP2407808A1 (en) | 2012-01-18 |
US9004781B2 (en) | 2015-04-14 |
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