WO2012131811A1 - 光ファイバテープ心線、光ファイバテープ心線の製造方法、および光ケーブル - Google Patents
光ファイバテープ心線、光ファイバテープ心線の製造方法、および光ケーブル Download PDFInfo
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- WO2012131811A1 WO2012131811A1 PCT/JP2011/005313 JP2011005313W WO2012131811A1 WO 2012131811 A1 WO2012131811 A1 WO 2012131811A1 JP 2011005313 W JP2011005313 W JP 2011005313W WO 2012131811 A1 WO2012131811 A1 WO 2012131811A1
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- optical fiber
- core coated
- fiber ribbon
- coated optical
- optical fibers
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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
- G02B6/4401—Optical cables
- G02B6/4403—Optical cables with ribbon structure
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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
-
- 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
- G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
-
- 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
- G02B6/4405—Optical cables with longitudinally spaced waveguide clamping
Definitions
- the present invention relates to an optical fiber ribbon, a method for manufacturing an optical fiber ribbon, and an optical cable.
- optical cables are required to ensure sufficient reliability, further reduce diameter and weight, increase density, and improve workability.
- Such an intermittently bonded optical fiber ribbon has a small bending anisotropy, it can be stored in a cable in a tubular shape or folded, and the cable can be reduced in diameter, weight, and density. . Moreover, it is easy to individually branch the optical fibers from the optical fiber ribbon, and when connecting the optical fibers, the optical fibers can be arranged in parallel in a predetermined arrangement, so that batch connection is also possible.
- Patent Document 1 discloses a thickness and length that can easily buckle the resin portion against an external force applied in the width direction of the optical fiber ribbon. What is made is described. However, the effect was limited and was not fully satisfactory.
- the present invention is an optical fiber ribbon capable of ensuring the reliability of an optical cable, reducing the diameter and weight, increasing the density, and further improving the workability, and a method for manufacturing such an optical fiber ribbon, And it aims at providing the optical cable using such an optical fiber tape cable core.
- an optical fiber ribbon having a coupling portion that couples only the coated optical fibers, and the interval P between the coupling portions that couple the same two single-core coated optical fibers is 20 mm or more and 90 mm or less, An optical fiber ribbon in which the length Q of each coupling portion is 1 mm or more and 10 mm or less is provided.
- a method of manufacturing an optical fiber ribbon having a coupling portion that couples only core-coated optical fibers, wherein four single-core coated optical fibers are arranged in parallel, and adjacent two single-core coated optical fibers Further, a method is provided in which an ultraviolet curable resin is discharged and applied from one side thereof by a discharge device having a plunger mechanism, then passed through a collecting die, and then irradiated with ultraviolet rays to be cured.
- an optical cable comprising the above optical fiber ribbon is provided.
- the strain applied to the single-core coated optical fiber when the optical cable is bent can be greatly reduced, and the optical cable can have sufficient long-term reliability. Moreover, collective connection is easy, and the connection workability of the optical cable can be improved.
- an optical fiber ribbon having such excellent characteristics can be efficiently manufactured.
- the optical cable according to another aspect of the present invention includes the optical fiber ribbon as described above, sufficient long-term reliability can be ensured and good connection workability can be achieved.
- FIG. 1 is a perspective view schematically showing an optical fiber ribbon according to an embodiment of the present invention.
- the optical fiber ribbon 10 of this embodiment four single-core coated optical fibers 11 are arranged in parallel on the same plane. And the coupling
- the single-core coated optical fiber 11 for example, an optical fiber provided with one or more protective coatings using an ultraviolet curable resin or the like, or a colored layer further provided on such a protective coating. used.
- an ultraviolet curable resin As the material of the coupling portion 12, an ultraviolet curable resin, a thermosetting resin, a thermoplastic resin, or the like that bonds the single-core coated optical fibers 11 to each other is used. From the viewpoint of improving the ease of formation and the distortion characteristics when bending an optical cable, an ultraviolet curable resin is preferable. An ultraviolet curable resin of s to 17000 mPa ⁇ s is preferred.
- each connecting portion 12 is 1 mm or more and 10 mm or less, preferably 2 mm or more and 4 mm or less.
- the interval P between the coupling portions 12 that couples the same two adjacent single-core coated optical fibers (hereinafter, may be referred to as the interval P between the coupling portions 12 or the arrangement interval P of the coupling portions 12) is 20 mm or more. It is 90 mm or less, preferably 30 mm or more and 60 mm or less.
- the length Q exceeds 10 mm, the strain applied to the single-core coated optical fiber when the optical cable is bent becomes excessive, and the long-term reliability is likely to deteriorate.
- the distance P is less than 20 mm, the strain applied to the single-core coated optical fiber when the optical cable is bent becomes excessive, and the long-term reliability is likely to deteriorate.
- the distance P exceeds 90 mm, the connection workability of the optical fiber ribbon may be adversely affected. It is particularly preferable that the length Q of each coupling portion 12 is 3 mm, and the interval P between the coupling portions 12 in the length direction of the single-core coated optical fiber is 65 mm.
- the coupling portions 12 adjacent to each other in the width direction of the optical fiber ribbon 10 are spaced apart from each other in the longitudinal direction. That is, the coupling portion 12 is arranged so as to have a portion where the coupling portion 12 does not exist at all in the width direction of the optical fiber ribbon 10.
- the arrangement pattern is not particularly limited.
- FIG. 2 shows an example of the arrangement pattern of the coupling portion 12.
- a coupling portion 12 that couples the first (first core) single-core coated optical fiber 11A and the second (second core) single-core coated optical fiber 11B, and a third ( The coupling portion 12 that couples the third-core single-core coated optical fiber 11C and the fourth (fourth-core) single-core coated optical fiber 11D is substantially the same in the length direction of the optical fiber ribbon. Arranged at intervals.
- the coupling portion 12 that couples the second single-core coated optical fiber 11B and the third single-core coated optical fiber 11C is disposed so as to be positioned approximately in the middle in the length direction.
- the coupling unit 12 that couples the first single-core coated optical fiber 11A and the second single-core coated optical fiber 11B, the second single-core coated optical fiber 11B, and the first An optical fiber tape core includes a coupling portion 12 that couples the third single-core coated optical fiber 11C, and a coupling portion 12 that couples the third single-core coated optical fiber 11C and the fourth single-core coated optical fiber 11D. They are arranged at substantially the same interval in the length direction of the line.
- the length Q and the arrangement interval P of the coupling portion 12 that couples the first single-core coated optical fiber 11A and the second single-core coated optical fiber 11B may be the same or different.
- the length Q of the coupling portion 12 is the same, the coupling portion 12 that couples the second single-core coated optical fiber 11b and the third single-core coated optical fiber 11c.
- the arrangement interval P is different from the others.
- the length Q and the arrangement interval P of the coupling portion for coupling the same two single-core coated optical fibers may be the same or different.
- the interval P between the coupling portions 12 that couple the same two single-core coated optical fibers 11 is 20 mm or more and 90 mm or less, and the length Q of each coupling portion is 1 mm. It is 10 mm or less. Therefore, when a cable is formed, the strain applied to the single-core coated optical fiber when the optical cable is bent can be greatly reduced, and the optical cable can be provided with sufficient long-term reliability. Moreover, collective connection is easy, and the connection workability of the optical cable can be improved.
- FIG. 3 is a diagram schematically showing an example of an apparatus used for manufacturing the optical fiber ribbon of the present embodiment.
- an ultraviolet curable resin 22 as a bonding portion forming material is minutely applied to four single-core coated optical fibers 11 that are sent out in a state of being substantially in contact with each other in parallel from a core wire sending device (not shown).
- An ultraviolet irradiation device 25 that irradiates the single-core coated optical fiber 11 that has passed through the die 24 with ultraviolet rays, cures the ultraviolet curable resin 22 that has been injected and applied by the microdroplet ejection device 23, and forms a coupling portion;
- a winding device (not shown) that winds up the optical fiber ribbon 10 obtained by forming.
- the micro droplet ejecting device 23 may be any device that can inject and apply the ultraviolet curable resin 22 into micro droplets at predetermined positions of the four single-core coated optical fibers 11 arranged in parallel.
- An injection device having a plunger mechanism as shown in FIG. 4 can be used. As shown in FIG. 4, this plunger type injection device is for injecting an injection material (ultraviolet curable resin) in a cylinder 41 from an injection nozzle 44 by an injection plunger 43. By reciprocating, the ultraviolet curable resin 42 can be ejected from the ejection nozzle 44 as fine droplets. Examples of such a plunger type injection device include Cyberjet (trade name) manufactured by Musashi Engineering Co., Ltd.
- the micro droplet ejection device 23 is disposed immediately before the collecting die 24.
- the assembly die 24 is provided with the insertion hole having a cross-sectional tape shape, and by passing through this, the four single-core coated optical fibers 11 are arranged in parallel on the same plane and adjacent to each other.
- the coated optical fibers are gathered so as to be substantially in contact with each other, and the surface of the ultraviolet curable resin 22 in the form of microdroplets injected and applied by the microdroplet ejecting device 23 is formed flat.
- the four single-core coated optical fibers 11 delivered from the delivery device 1 are adjacent to each other by the microdroplet ejection device 23 immediately before being inserted into the collecting die 24.
- the ultraviolet curable resin 22 is applied across the coated optical fiber 11
- the coated optical fiber 11 is inserted into the assembly die 23.
- the four single-core coated optical fibers 11 exiting the assembly die 23 are then irradiated with ultraviolet rays by an ultraviolet irradiation device 25, and the ultraviolet curable resin 22 is cured, whereby two adjacent single-core coated light beams are cured.
- the optical fiber tape core wire 10 of the present embodiment is formed in which coupling portions that couple only the fibers 11 are formed at intervals in the length direction and the width direction, respectively. Thereafter, the optical fiber ribbon 10 is wound by a winding device (not shown).
- This device is basically a liquid chamber having a discharge port for discharging a liquid injection material (ultraviolet curable resin), and its tip and the periphery of the tip are not in contact with the inner wall of the liquid chamber.
- FIG. 5 shows a specific configuration thereof.
- 50 indicates the main body of this apparatus.
- the main body 50 includes a recess 51A that is a cylindrical space formed at the front end thereof, a small-diameter through hole 52A that is formed behind the recess 51A, a cylinder 53 that is a space communicating with the through hole 52A, a cylinder
- the piston chamber 54 is a space having a larger diameter than the cylinder 53 formed behind the cylinder 53
- the spring chamber 55 is a space having a smaller diameter than the piston chamber 54 formed behind the piston chamber 54.
- a discharge nozzle 56 is attached to the main body 50 so as to communicate with the recess 51A.
- the discharge nozzle 56 has a cylindrical recess 51B formed on the rear end side thereof, and a small-diameter discharge channel 57 communicating with the recess 51B is formed on the front end thereof.
- a discharge port 58 is opened in front of the discharge channel 57.
- the discharge nozzle 56 is mounted on the main body 50, and the recess 51A and the recess 51B constitute a liquid chamber 59.
- the pushing member 60 includes a plunger 62 positioned at the front, a rear abutting member 63 positioned at the rear, and an abutting portion 64 connecting them.
- the plunger 62 is a small-diameter, elongated columnar member provided in front of the pushing member 60, and is arranged so that the front end is located in the liquid chamber 59 and the rear end is located in the cylinder 53.
- a seal 65 ⁇ / b> A is provided on the inner wall of the through hole 52 ⁇ / b> A so as to be in close contact with the side surface of the plunger 62.
- the seal 65A seals the liquid chamber 59 and the cylinder 53 by sealing the plunger 62 so as to be slidable.
- a spring 66 through which the plunger 62 passes is provided in the cylinder 53.
- the spring 66 is disposed so as to be sandwiched between the inner wall surface in front of the cylinder 53 and the front end of the contact portion 64, and always urges the pushing member 60 backward. With this configuration, in a state where the contact portion 64 and the collision member 61 are not in contact with each other, the pushing member 60 is stopped in a state of being in contact with and urged by a rear stopper 67 described later.
- a cylindrical or disk-like contact portion 64 having a diameter larger than that of the plunger 62 is fixed to the rear end of the plunger 62.
- the contact part 64 is slidably disposed in the cylinder 53.
- a columnar rear contact member 63 having a smaller diameter than the contact portion 64 is fixed to the rear end of the contact portion 64.
- the rear contact member 63 passes through the circumference of the spring 69 and extends to the vicinity of the rear of the spring chamber 55.
- the spring 69 urges the collision member 61 forward.
- the spring 69 is configured to have such a strength and length that the pushing member 60 can be urged to the forward stop position against the urging of the spring 66 in a state where the space on the front side of the piston chamber 54 communicates with the atmosphere. Preferably it is.
- the collision member 61 is composed of a collision portion 68 located in the front and a piston 70 located in the rear, and has a through hole 52B on the central axis thereof.
- the collision portion 68 is a columnar member having a smaller diameter than the cylinder 53, is provided coaxially in front of the piston 70, and its tip is located in the cylinder 53.
- the cylinder 53 has a seal 65C and a guide 71 therein.
- the seal 65C seals the cylinder 53 and the space on the front side of the piston chamber 54 by slidably sealing the collision portion 68 in close contact with the cylinder 53.
- the guide 71 slidably supports the collision part 68 so that the collision part 68 does not shake in the lateral direction.
- the piston 70 is a cylindrical member and is disposed in the piston chamber 54, and divides the piston chamber 54 into a front space and a rear space.
- the piston 70 has a seal 65 ⁇ / b> B on the side peripheral surface, and the piston 70 is slidably sealed in a state of being in close contact with the piston chamber 54.
- the through hole 52 ⁇ / b> B penetrates from the front end of the collision portion 68 to the rear end of the piston 70.
- a rear abutting member 63 of the pushing member 60 is passed through the through hole 52B.
- the inner diameter of the through-hole 52 ⁇ / b> B is formed larger than the outer diameter of the rear abutting member 63 so as not to hinder the forward / backward movement of the pushing member 60.
- the piston chamber 54 is provided with an air passage 72A on the side thereof.
- the air passage 72 ⁇ / b> A is formed so as to communicate with the electromagnetic switching valve 73 provided outside the main body 50 from the side of the space on the front side of the piston chamber 54.
- the electromagnetic switching valve 73 has a port 53A communicating with the air supply source 74 and a port 53B opened to the atmosphere, and a first state in which the front side of the piston chamber 54 communicates with the air supply source 74. And a second state in which the front piston chamber 54 communicates with the atmosphere.
- the spring chamber 55 is provided with an air passage 72 ⁇ / b> B communicating with the outside on the side thereof.
- the air passage 72B always communicates the space behind the piston chamber 54 and the spring chamber 55 with the atmosphere.
- a spring 69 is disposed between the rear end of the piston 70 and the inner wall surface on the rear side of the spring chamber 55, and the piston 70 is biased forward by the spring 69.
- a rear stopper 67 that enters the spring chamber 55 is disposed at the rear end of the main body 50.
- the rear stopper 67 limits the rearward movement of the pushing member 60 by contacting the rear end portion of the rear contact member 63.
- the rear end of the rear stopper 67 is connected to a micrometer 75, and the front and rear positions of the rear stopper 67 can be adjusted by operating the micrometer 75.
- a syringe attachment member 76 is disposed on the front side of the main body 50.
- the syringe attachment member 76 has a syringe attachment portion 78 that can be connected to a syringe discharge port 77 that stores a liquid material.
- a liquid material supply channel 79 is formed in the syringe mounting member 76, one end of which is provided on the side surface near the rear end portion of the liquid chamber 59, and the other end is provided in the syringe mounting portion 78.
- the liquid supply channel 79 allows the syringe 80 attached to the syringe mounting portion 78 to communicate with the liquid chamber 59.
- An air tube 82 is connected above the syringe 80 via an adapter 81, and the other end of the air tube 82 is connected to an air supply device 83.
- the air supply device 83 supplies air into the syringe 80 via the air tube 82 to bring the inside of the syringe 80 to a desired pressure, and transfers the liquid material in the syringe 80 to the liquid chamber 59.
- the air supply device 83 and the electromagnetic switching valve 73 are connected to the control unit 84, and switching of the electromagnetic switching valve 73 and supply of air into the syringe are controlled by a signal from the control unit 84.
- FIG. 6 is a cross-sectional view showing an example of an optical cable using the optical fiber tape of the present invention.
- a plurality of, for example, five optical fiber tape cores 10 are assembled, and a colored rough wound yarn for identification or a colored rough wound tape 31 is wound around the outer circumference in one direction.
- the optical fiber unit 32 is formed.
- a plurality of, for example, 10 optical fiber units 32 are gathered, and the outer cover 34 is covered on the outer periphery of the optical fiber unit 32 via a presser wound layer 33 made of, for example, a protective tape having a water stop function.
- a presser wound layer 33 made of, for example, a protective tape having a water stop function.
- a high-density polyethylene stretched tape or the like is used for example.
- polyester tape polyethylene terephthalate
- PET polyethylene terephthalate
- Tape polyester nonwoven fabric, etc.
- a synthetic resin such as polyethylene or polyvinyl chloride is used for the outer cover 34.
- Strength members 35 and 35 made of two steel wires or FRP (fiber reinforced plastic) are vertically embedded in the jacket 34 so as to be symmetrical with respect to the center of the cable.
- tear strings 36 and 36 made of two polyesters or the like are vertically attached and embedded at positions rotated by approximately 90 ° in the circumferential direction from these strength members 35, respectively. That is, these two tear strings 36, 36 are also embedded in positions symmetrical to each other with respect to the center of the cable, like the two strength members 35, 35.
- convex portions 37, 37 are provided on the outer periphery of the jacket 34 in which the tear strings 36, 36 are embedded, so that the positions where the tear strings 36, 36 are embedded can be seen from the outside.
- a cable support line 38 made of a steel wire or the like is attached to the outer jacket 34 along the length direction of the cable.
- a coating 39 made of a synthetic resin such as polyethylene or polyvinyl chloride is provided on the outer periphery of the cable support line 38, and the coating 39 is integrally coupled to the jacket 34 via the neck 40.
- the optical cable may have a structure that does not have such a cable support line 38.
- the optical fiber ribbon 10 having the above-described characteristics is used, it is possible to store the optical fiber ribbon 10 in the optical cable with high density, and to reduce the diameter of the optical cable. it can. That is, since the optical fiber ribbon 10 can greatly reduce the strain applied to the single-core coated optical fiber when the optical cable is bent, it can be stored in the optical cable with high density.
- Example 1 The optical fiber tape core wire shown in FIG. 1 in which the length Q of the coupling portion that couples only two adjacent single-core coated optical fibers and the arrangement interval P thereof are 3 mm and 65 mm, respectively, was produced.
- the single-core coated optical fiber has a primary coating made of a urethane acrylate UV curable resin having a Young's modulus of 5 MPa at 23 ° C. on a quartz glass-based SM optical fiber having an outer diameter of 125 ⁇ m, and a Young's modulus at 23 ° C. of about
- a single-core coated optical fiber having an outer diameter (D) of 250 ⁇ m and a secondary coating made of a 700 MPa urethane acrylate UV curable resin was used.
- an acrylic ultraviolet curable resin having a viscosity of 14000 mPa ⁇ s measured by a cone plate viscometer at 25 ° C. measured in accordance with JIS K 6833 was used for forming the bonding portion.
- a 200-core optical cable as shown in FIG. 6 was manufactured using each of these optical fiber ribbons.
- Five optical fiber ribbons were assembled, and a 2.0 mm wide high-density polyethylene stretched tape was wound around the outer periphery as a colored rough winding tape in one direction to produce an optical fiber unit.
- Ten optical fiber units were twisted in one direction, and a protective tape made of a polyester nonwoven fabric having a thickness of 0.2 mm was wound around the optical fiber unit. Thereafter, the two tensile strength members and the two tear strings were placed around the periphery, and the cable support line was sent to an extruder, and low density polyethylene was extrusion coated on the outer periphery to produce an optical cable.
- a galvanized hard steel wire having a diameter of 0.7 mm was used as the tensile body, and a 1000 denier triple twisted polyester string was used as the tear string.
- As the cable support wire a steel stranded wire (element diameter: 1.40 mm) having 7 strands was used.
- Each size of the optical cable is as follows. Outer diameter of outer casing measured at a portion other than the convex portion: 9.5 mm Inner diameter of jacket: 5.5mm Thickness of the jacket measured at the part other than the convex part: 2.0 mm
- Example 2 Comparative Examples 1 to 7
- a core wire was prepared.
- the optical cable was produced like Example 1 using each obtained optical fiber tape core wire.
- optical cables obtained in each of the above examples and comparative examples were examined for distortion characteristics when the optical cable was bent and the connection workability of the optical fiber ribbon was evaluated.
- the strain characteristics when bending an optical cable were determined by bending the optical cable at a radius of 120 mm, 300 mm, and 500 mm, measuring the strain of the single-core coated optical fiber that occurred at that time, and obtaining the maximum value.
- the strain was measured with a BOTDA measurement type high resolution strain measuring instrument (manufactured by Newplex Co., Ltd., model number NBX-6020A; measurement wavelength 1550 ⁇ 2 nm, distance resolution 20 mm).
- connection workability of the optical fiber ribbon was measured by actually performing the fusion splicing work using a commercially available fusing holder (length: 50 mm) and measuring the time required for the work (average fusing time).
- Fig. 7 shows the measurement results of the distortion characteristics when the optical cable is bent.
- the measurement result of the connection workability of the optical fiber ribbon is the average fusion in the case of the conventional type optical fiber ribbon, that is, the optical fiber tape with the outer periphery of the four single-core coated optical fibers collectively coated.
- Table 1 shows the relative values when the wearing time is 1.00.
- FIG. 7 except that a conventional type optical fiber ribbon, that is, an optical fiber ribbon in which the outer periphery of four single-core coated optical fibers is collectively coated is used as the optical fiber ribbon.
- the optical fiber tape cores of the examples had good distortion characteristics and connection workability when bending the optical cable.
- those having good distortion characteristics when bending an optical cable have poor connection workability, and those having good connection workability have poor distortion characteristics when bending an optical cable.
- SYMBOLS 10 Optical fiber ribbon, 11, 11A-11D ... Single core coated optical fiber, 12 ... Coupling part, 22 ... Ultraviolet curable resin, 23 ... Micro droplet ejection apparatus, 24 ... Collecting die, 25 ... Ultraviolet irradiation apparatus 31 ... Colored coarsely wound tape, 32 ... Optical fiber unit, 33 ... Presser wound layer, 34 ... Jacket, 41 ... Cylinder, 43 ... Injection plunger, 44 ... Injection nozzle.
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- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
Description
隣接する2本の単心被覆光ファイバ同士のみを結合する結合部の長さQ、およびその配置間隔Pがそれぞれ3mm、および65mmの図1に示す光ファイバテープ心線を作製した。単心被覆光ファイバには、外径125μmの石英ガラス系SM光ファイバ上に、23℃におけるヤング率が5MPaのウレタンアクリレート系紫外線硬化型樹脂からなる1次被覆、および23℃におけるヤング率が約700MPaのウレタンアクリレート系紫外線硬化型樹脂からなる2次被覆を施した外径(D)250μmの単心被覆光ファイバを用いた。また、結合部の形成には、JIS K 6833に準拠して測定される25℃におけるコーンプレート型粘度計による粘度が14000mPa・sのアクリル系紫外線硬化型樹脂を用いた。
凸部以外の部分で測定される外被の外径:9.5mm
外被の内径:5.5mm
凸部以外の部分で測定される外被の厚さ:2.0mm
隣接する2本の単心被覆光ファイバ同士のみを結合する結合部の長さQおよびその配置間隔Pの少なくとも一方を表1に示すように変えた以外は実施例1と同様にして光ファイバテープ心線を作製した。また、得られた各光ファイバテープ心線を用いて、実施例1と同様にして光ケーブルを作製した。
Claims (7)
- 同一平面上に並列配置された4本の単心被覆光ファイバと、長さ方向および幅方向にそれぞれ間隔をおいて配置された、隣接する2本の単心被覆光ファイバ同士のみを結合する結合部とを備えた光ファイバテープ心線であって、
同一の前記2本の単心被覆光ファイバ同士を結合する結合部の間隔Pが20mm以上90mm以下で、前記各結合部の長さQが1mm以上10mm以下であることを特徴とする光ファイバテープ心線。 - 幅方向に隣り合う前記結合部同士は、長手方向に離間して配置されていることを特徴とする請求項1記載の光ファイバテープ心線。
- 前記結合部は、JIS K 6833に準拠して測定される25℃におけるコーンプレート型粘度計による粘度が11000mPa・s以上17000mPa・s以下の紫外線硬化型樹脂からなる請求項1または2記載の光ファイバテープ心線。
- 前記結合部は、前記隣接する2本の単心被覆光ファイバ間に一方の側より塗布した樹脂からなることを特徴とする請求項1乃至3のいずれか1項記載の光ファイバテープ心線。
- 半径300mmで曲げたときの最大曲げ歪みが0.05%以下である請求項1乃至4のいずれか1項記載の光ファイバテープ心線。
- 同一平面上に並列配置された4本の単心被覆光ファイバと、長さ方向および幅方向にそれぞれ間隔をおいて配置された、隣接する2本の単心被覆光ファイバ同士のみを結合する結合部とを備えた光ファイバテープ心線の製造方法であって、
4本の単心被覆光ファイバを並列させ、隣接する2本の単心被覆光ファイバ間にその一方の側より、プランジャ機構を有する吐出装置により紫外線硬化型樹脂を吐出塗布した後、集合ダイスに通し、次いで、前記紫外線硬化型樹脂に紫外線を照射して硬化させることを特徴とする光ファイバテープ心線の製造方法。 - 請求項1乃至5のいずれか1項記載の光ファイバテープ心線を備えたことを特徴とする光ケーブル。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US13/577,775 US8787718B2 (en) | 2011-03-30 | 2011-09-21 | Optical fiber ribbon, method of manufacturing optical fiber ribbon, and optical cable |
KR1020127019728A KR101218021B1 (ko) | 2011-03-30 | 2011-09-21 | 광파이버 테이프 심선, 광파이버 테이프 심선의 제조 방법 및 광케이블 |
CN201180008860.4A CN102822711B (zh) | 2011-03-30 | 2011-09-21 | 光纤带芯线、光纤带芯线的制造方法及光缆 |
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JP (1) | JP4968754B1 (ja) |
KR (1) | KR101218021B1 (ja) |
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JP4968754B1 (ja) | 2012-07-04 |
KR101218021B1 (ko) | 2013-01-02 |
CN102822711B (zh) | 2014-04-16 |
CN102822711A (zh) | 2012-12-12 |
JP2012208443A (ja) | 2012-10-25 |
TWI383185B (zh) | 2013-01-21 |
KR20120125609A (ko) | 2012-11-16 |
US20140016905A1 (en) | 2014-01-16 |
TW201239437A (en) | 2012-10-01 |
US8787718B2 (en) | 2014-07-22 |
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