WO2023176913A1 - ダイス、光ファイバテープ心線の製造方法及び光ファイバテープ心線の製造装置 - Google Patents

ダイス、光ファイバテープ心線の製造方法及び光ファイバテープ心線の製造装置 Download PDF

Info

Publication number
WO2023176913A1
WO2023176913A1 PCT/JP2023/010220 JP2023010220W WO2023176913A1 WO 2023176913 A1 WO2023176913 A1 WO 2023176913A1 JP 2023010220 W JP2023010220 W JP 2023010220W WO 2023176913 A1 WO2023176913 A1 WO 2023176913A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
die
outer diameter
cylindrical surfaces
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/010220
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
怜央 天野
慎 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP2023563329A priority Critical patent/JPWO2023176913A1/ja
Publication of WO2023176913A1 publication Critical patent/WO2023176913A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

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
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

Definitions

  • the present disclosure relates to a die, a method for manufacturing an optical fiber tape, and an apparatus for manufacturing an optical fiber tape.
  • Patent Document 1 discloses a method for manufacturing an optical fiber ribbon having an intermittent structure by forming cuts between adjacent optical fibers when creating an optical fiber ribbon, and a method for manufacturing an optical fiber having an intermittent structure.
  • a die suitable for manufacturing fiber tape cores is disclosed.
  • the present disclosure provides a die for forming an integrated optical fiber ribbon by coating a plurality of optical fibers lined up along a first direction with a resin, the die being compatible with each of the plurality of optical fibers.
  • a first surface in which a plurality of first cylindrical surfaces are arranged side by side along the first direction; and the first surface is a part of an inner circumferential surface, through which the plurality of optical fibers pass. an opening, and a distance along the first direction between central axes corresponding to adjacent first cylindrical surfaces among the plurality of first cylindrical surfaces is equal to the distance along the first direction.
  • the die is larger than the outer diameter and is less than or equal to the outer diameter plus 4 ⁇ m.
  • FIG. 1 is a perspective view schematically showing an optical fiber ribbon formed using a die according to this embodiment.
  • FIG. 2 is a cross-sectional view schematically showing an optical fiber ribbon formed using the die according to this embodiment.
  • FIG. 3 is a diagram schematically showing an optical fiber tape manufacturing apparatus using the die according to the present embodiment.
  • FIG. 4 is a diagram schematically showing a die according to this embodiment.
  • a multi-core optical fiber ribbon is known in which a plurality of optical fibers are integrated by a common coating layer and configured in an intermittent structure so that single cores can be easily separated.
  • a multi-core optical fiber tape is separated into, for example, four-core optical fiber tape, and then further separated into single-core optical fiber (intermediate branching).
  • separation becomes easier.
  • the present disclosure provides a die that can stably secure recesses in a common coating layer formed between adjacent optical fiber ribbons in a multi-core optical fiber ribbon.
  • the die of the present disclosure is a die that forms an integrated optical fiber ribbon by coating a plurality of optical fibers lined up along the first direction with resin. Further, the die of the present disclosure includes a first surface in which a plurality of first cylindrical surfaces provided corresponding to each of the plurality of optical fiber cores are arranged in line along the first direction; is a part of the inner peripheral surface, and has an opening through which the plurality of optical fibers pass.
  • a distance along the first direction between central axes corresponding to adjacent first cylindrical surfaces among the plurality of first cylindrical surfaces is a distance along the first direction of the optical fiber core wire. It is larger than the outer diameter and less than or equal to the outer diameter plus 4 ⁇ m.
  • the die of the present disclosure it is possible to stably secure the recesses of the common coating layer formed between adjacent optical fiber cores in a multi-core optical fiber tape core.
  • the outer diameter of the optical fiber coated wire referred to here may be the outer diameter of the optical fiber coated wire that is actually manufactured, but it is the outer diameter of the optical fiber coated wire based on the design of the die concerned. It's okay.
  • the die of the present disclosure may have a plane extending along the first direction between the adjacent first cylindrical surfaces. This is because by having a plane extending along the first direction, the flow of the resin is stabilized, so that the recesses of the coating can be more reliably secured.
  • the die of the present disclosure has a second surface that faces the first surface and has a plurality of second cylindrical surfaces provided corresponding to each of the plurality of optical fiber cores arranged in line along the first direction. It is good to have. This is because by having the second surface opposite to the first surface, depressions of the common coating layer can be formed on both sides of the optical fiber ribbon in the thickness direction.
  • a method for manufacturing an optical fiber ribbon according to the present disclosure includes a step of passing a plurality of optical fiber cores while supplying an ultraviolet curable resin to the opening of a die according to the present disclosure, and curing the ultraviolet curable resin. and a step of causing.
  • an optical fiber ribbon of the present disclosure it is possible to stably secure the recesses of the common coating layer formed between adjacent optical fibers in a multi-core optical fiber ribbon. can.
  • the optical fiber ribbon manufacturing apparatus of the present disclosure includes the die of the present disclosure, a resin storage section that supplies an ultraviolet curable resin to the die, and an ultraviolet irradiation section that cures the ultraviolet curable resin.
  • optical fiber ribbon manufacturing apparatus of the present disclosure it is possible to stably secure the recesses of the common coating layer formed between adjacent optical fiber ribbons in a multi-core optical fiber ribbon. can.
  • Shifts in parallel, perpendicular, orthogonal, horizontal, vertical, etc. directions are allowed to an extent that does not impair the effects of the embodiment.
  • the shape of the corner portion is not limited to a right angle, but may be rounded in an arcuate shape.
  • Parallel, right angle, perpendicular, horizontal, and perpendicular may include substantially parallel, substantially perpendicular, substantially orthogonal, substantially horizontal, and substantially perpendicular.
  • substantially parallel means that even if two lines or two planes are not completely parallel to each other, they can be treated as parallel to each other within the range permitted by manufacturing.
  • Other terms such as substantially right angle, substantially perpendicular, substantially horizontal, and substantially perpendicular also apply to each of them as long as the mutual positional relationship between the two lines or two surfaces is within the range allowed for manufacturing, as in the case of substantially parallel. It is intended that
  • an XYZ orthogonal coordinate system may be shown in the figures for convenience of explanation.
  • coordinate axes perpendicular to the plane of the drawing if a cross is shown inside a circle on the coordinate axis, this indicates that the direction toward the back of the plane of the drawing is the positive region of the coordinate axis.
  • a black circle is shown inside the circle of the coordinate axis, this indicates that the near side with respect to the plane of the drawing is the positive region of the coordinate axis.
  • the coordinate system mainly indicates directions for the purpose of explanation, and does not limit the coordinates and postures of the optical fiber core wire, dice, etc. of the present disclosure.
  • FIG. 1 is a perspective view schematically showing an optical fiber ribbon 10 formed using a die according to this embodiment.
  • FIG. 2 is a cross-sectional view schematically showing the optical fiber ribbon 10 formed using the die according to this embodiment.
  • the X axis is the direction in which the optical fibers 11 are lined up
  • the Z axis is the direction in which the optical fibers 11 extend
  • the Y axis is the direction perpendicular to the X and Z axes.
  • the optical fiber cores 11 are lined up along the X-axis direction.
  • the optical fiber core 11 extends along the Z-axis direction.
  • the Y-axis direction may be referred to as the thickness direction of the optical fiber ribbon 10.
  • the optical fiber ribbon 10 includes 12 optical fibers 11a to 11l arranged in a row along the X-axis direction.
  • each of the optical fiber coated wires 11a to 11l may be collectively referred to as the optical fiber coated wires 11.
  • the optical fiber ribbon 10 also includes a common coating layer 12 that covers the entire length of the outer surface of the twelve optical fibers 11, including the upper and lower parallel surfaces in the Y-axis direction.
  • the optical fiber ribbon 10 has a tape-like form in which twelve optical fibers 11 are integrated over the entire length.
  • adjacent optical fiber core wires 11 are preferably in contact with each other, but may be separated without contacting each other.
  • Each of the coated optical fibers 11, that is, the coated optical fibers 11a to 11l, includes a glass fiber 13, a protective coating 14, and a colored layer 15.
  • the glass fiber 13 includes a core 13a and a cladding 13b provided around the core 13a.
  • the core 13a and the cladding 13b are made of glass.
  • the glass fiber 13 has an outer diameter of 100 ⁇ m, for example.
  • the optical fiber core 11 includes a protective coating 14 that covers the outer periphery of the glass fiber 13.
  • the protective coating 14 is made of, for example, acrylate resin.
  • the optical fiber core 11 includes a colored layer 15 covering the outer periphery of the protective coating 14.
  • the colored layer 15 covers the protective coating 14 and identifies each of the optical fiber cores 11.
  • the optical fiber core 11 has an outer diameter of, for example, around 200 ⁇ m.
  • the optical fiber core wire 11 is a single-core optical fiber.
  • the outer diameter of the glass fiber 13 and the outer diameter of the optical fiber core 11 are not limited to 100 ⁇ m and 200 ⁇ m, respectively.
  • the outer diameter of the glass fiber 13 and the outer diameter of the optical fiber core 11 may be larger, approximately 125 ⁇ m and 255 ⁇ m, respectively.
  • the outer diameter of the optical fiber coated wire 11 may differ from 200 ⁇ m due to manufacturing tolerances and the like.
  • the outer diameter (core wire diameter) of the optical fiber coated wire 11 used in the optical fiber tape coated wire 10 according to the present embodiment was one having an average outer diameter of 202 ⁇ m.
  • the common coating layer 12 is formed of an ultraviolet curing resin or the like.
  • the common covering layer 12 may be formed of thermoplastic resin, thermosetting resin, or the like.
  • the protective coating 14 may be composed of two layers.
  • the optical fiber tape core 10 periodically has cuts 17 penetrating in the thickness direction in the common coating layer 12 between two or more predetermined number of optical fiber cores 11. That is, the optical fiber ribbon 10 is an optical fiber ribbon having an intermittent structure.
  • the connecting portion 18 made of the common coating layer 12 and the common coating layer 12 are penetrated in the thickness direction over the longitudinal direction (Z-axis direction) of the optical fiber tape coated wire 10. Unconnected parts with cuts 17 are formed alternately.
  • the space between the optical fiber cores 11 in which connected portions 18 and non-connected portions are alternately formed is referred to as an intermittent connected portion 31.
  • a continuous coupling portion 32 is formed in which the coupling portions 19 made of the common coating layer 12 are continuously formed over the longitudinal direction of the optical fiber tape coated wire 10.
  • the optical fiber ribbon 10 has a cut 17 between every two optical fibers 11. More specifically, the optical fiber ribbon 10 has a cut 17 in the common coating layer 12 between the optical fibers 11b and 11c. Similarly, the optical fiber ribbon 10 is arranged between the optical fibers 11d and 11e, between the optical fibers 11f and 11g, between the optical fibers 11h and 11i, and between the optical fibers 11j and 11j. A notch 17 is provided in the common covering layer 12 between the common covering layer 11k and the common covering layer 11k.
  • the optical fiber tape core 10 has an intermittent connection portion 31 between the optical fiber cores 11b and 11c.
  • the optical fiber ribbon 10 is arranged between the optical fibers 11d and 11e, between the optical fibers 11f and 11g, between the optical fibers 11h and 11i, and between the optical fibers 11j and 11j. 11k, each having an intermittent connection portion 31.
  • the optical fiber ribbon 10 has a continuous connection portion 32 between the optical fibers 11a and 11b.
  • the optical fiber ribbon 10 is arranged between the optical fibers 11c and 11d, between the optical fibers 11e and 11f, between the optical fibers 11g and 11h, and between the optical fibers 11i. 11j and between the optical fiber cores 11k and 11l, there are continuous connecting portions 32, respectively.
  • the optical fiber tape core 10 has a recess 16 a formed by recessing the common coating layer 12 in the intermittent connection portion 31 . Furthermore, the optical fiber ribbon 10 has a concave portion 16b formed by recessing the common coating layer 12 in the continuous connection portion 32. Further, the optical fiber ribbon 10 has a concave portion 16c formed by recessing the common coating layer 12 in the continuous connecting portion 32 between the cores located on both sides of the center of the optical fiber ribbon 10.
  • the recess 16a of the intermittent connection part 31, in which the notch 17 is formed is formed deeper than each of the recesses 16b and 16c. Further, by making the recess 16c shallower, the recess 16b at the center position can be made deeper, so the recess 16b is preferably formed to be deeper than the recess 16c. Therefore, the thickness d1 of the intermittent connection part 31 is preferably thinner than the thickness d2 and the thickness d3 of the continuous connection part 32. Moreover, the thickness d2 of the continuous connection part 32 is preferably thinner than the thickness d3 of the continuous connection part 32.
  • the difference between the thickness d1 of the intermittent connection portion 31 and the thickness d2 of the continuous connection portion 32 is at least 20 ⁇ m or more, it becomes easier to reliably cut between the optical fiber cores 11.
  • FIG. 3 is a diagram schematically showing an apparatus 1 for manufacturing an optical fiber ribbon 10 using a die according to this embodiment. A method for manufacturing an optical fiber ribbon according to this embodiment will be explained while explaining the manufacturing apparatus 1.
  • the manufacturing apparatus 1 for the optical fiber tape core 10 includes a supply section 100, a coating section 200, a transport section 300, an intermittent processing section 400, and a winding section 500.
  • the supply unit 100 supplies the optical fiber coated wire 11 that constitutes the optical fiber tape coated wire 10.
  • the supply unit 100 includes 12 reels 101 to 112 corresponding to the number of fibers in the optical fiber tape 10, 12 dancer rollers 121 to 132, and a guide roller 140.
  • An optical fiber core 11 is wound on each of the reels 101 to 112, respectively.
  • the optical fiber core 11 is unwound from each of the reels 101 to 112.
  • Each of the optical fiber cores 11 unwound from the reel 101 is given a tension of approximately 9.8 ⁇ 10 ⁇ 2 to 9.8 ⁇ 10 ⁇ 1 N by dancer rollers 121 to 132, respectively.
  • each of the optical fiber core wires 11 is arranged on one arrangement surface when passing through the guide roller 140.
  • the optical fiber core wire 11 is further concentrated by a guide roller 150 and a guide roller 160, and sent to the coating section 200.
  • the application section 200 includes a nipple 210, a die 220, a resin storage section 230, and an ultraviolet irradiation section 240.
  • the nipple 210 arranges the optical fiber cores 11 in a predetermined array.
  • the nipple 210 includes a hole through which the optical fiber core 11 passes.
  • the optical fibers 11 are arranged in a predetermined array.
  • the arranged optical fiber cores 11 are then sent from the nipple 210 to the die 220.
  • the die 220 applies the ultraviolet curing resin stored in the resin storage section 230 around the arranged optical fiber cores 11.
  • FIG. 4 is a diagram schematically showing the die 220 according to this embodiment.
  • the X axis is the direction in which the optical fibers 11 passing through the die 220 are lined up
  • the Z axis is the direction in which the optical fibers 11 passing through the die 220 are extended
  • the Y axis is perpendicular to the X and Z axes. direction.
  • the optical fiber cores 11 passing through the die 220 are lined up along the X-axis direction. Further, the optical fiber core 11 passing through the die 220 extends along the Z-axis direction.
  • the die 220 has an opening 224 in the center of a rectangular parallelepiped block 220a formed of metal, through which the optical fiber core 11 sent from the nipple 210 passes.
  • the opening 224 passes through the block 220a along the direction in which the optical fiber core 11 passes, that is, the Z-axis direction.
  • the opening 224 has a substantially rectangular shape that is long in the direction in which the optical fibers 11 are lined up, that is, in the X-axis direction when viewed from the Z-axis direction. Note that the opening 224 may have an inclined surface in the Z-axis direction on the side into which the optical fiber 11 enters in order to stably introduce the optical fiber 11 into the opening 224.
  • the opening 224 is formed by a space surrounded by an upper surface 224a, a lower surface 224b, and a side surface 224c and a side surface 224d that connect the upper surface 224a and the lower surface 224b.
  • the lower surface 224b faces the upper surface 224a.
  • the upper surface 224a is a surface provided on the +Y side of the opening 224 in the Y-axis direction.
  • the upper surface 224a has a plurality of cylindrical surfaces provided corresponding to the optical fiber cores 11. Note that the cylindrical surface here corresponds to a portion of the cylindrical surface, not the entire circumference.
  • the cylindrical surface is provided extending along the Z-axis direction.
  • the upper surface 224a has 12 cylindrical surfaces 221a to 221l.
  • the cylindrical surfaces 221a to 221l are arranged sequentially in the +X direction along the X-axis direction starting from the cylindrical surface 221a.
  • the cylindrical surfaces 221a to 221l correspond to the optical fibers 11a to 11l of the optical fiber ribbon 10, respectively.
  • the upper surface 224a has a connecting surface 225a, which is a plane parallel to the X-axis direction, between the cylindrical surface 221a and the cylindrical surface 221b.
  • the connection surface 225a is a plane extending along the X-axis direction.
  • the connecting surface 225a connects the cylindrical surface 221a and the cylindrical surface 221b and extends along the Z-axis direction.
  • the upper surface 224a has connecting surfaces 225b to 225k between adjacent cylindrical surfaces.
  • the lower surface 224b is a surface provided on the ⁇ Y side of the opening 224 in the Y-axis direction.
  • the lower surface 224b is provided opposite the upper surface 224a. Further, the lower surface 224b is provided apart from the upper surface 224a in the ⁇ Y direction of the Y-axis direction.
  • the lower surface 224b has a plurality of cylindrical surfaces provided corresponding to the optical fiber cores 11. Note that the cylindrical surface here corresponds to a portion of the cylindrical surface, not the entire circumference.
  • the cylindrical surface is provided extending along the Z-axis direction. Specifically, the lower surface 224b has 222 l of cylindrical surfaces from the 12 cylindrical surfaces 222a.
  • the cylindrical surfaces 222a to 222l are arranged sequentially in the +X direction along the X-axis direction starting from the cylindrical surface 222a.
  • the cylindrical surfaces 222a to 222l correspond to the optical fibers 11a to 11l of the optical fiber ribbon 10, respectively.
  • the lower surface 224b has a connecting surface 226a, which is a surface parallel to the X-axis direction, between the cylindrical surface 222a and the cylindrical surface 222b.
  • the connecting surface 226a is provided to connect the cylindrical surface 222a and the cylindrical surface 222b and extend along the Z-axis direction.
  • lower surface 224b has connecting surfaces 226b to 226k between adjacent cylindrical surfaces.
  • each of the upper surface 224a and the lower surface 224b is the same, and the respective cylindrical surfaces disposed at opposing positions have a common central axis.
  • the central axis is provided to extend along the Z-axis direction.
  • the cylindrical surface 221a and the cylindrical surface 222a have the same central axis 223a.
  • each of the cylindrical surface 221a and the cylindrical surface 222a is composed of a cylindrical surface whose central axis is the central axis 223a.
  • the side surface 224c is also constituted by a cylindrical surface having the central axis 223a as the central axis.
  • each of the cylindrical surface 221b and the cylindrical surface 222b is composed of a cylindrical surface whose central axis is the central axis 223b.
  • the side surface 224d is constituted by a cylindrical surface having the central axis 223l as the central axis.
  • the die 220 can form depressions (concave portions) in the common coating layer 12 on both sides of the optical fiber ribbon 10 in the thickness direction (Y-axis direction).
  • the diameters corresponding to each of the cylindrical surfaces formed on the upper surface 224a and the lower surface 224b are equal to each other.
  • the diameter of the cylindrical surface of the die 220 is, for example, 240 ⁇ m.
  • the diameter corresponding to the cylindrical surface of the die 220 is determined based on, for example, the outer diameter of the optical fiber core 11 and the thickness of the common coating layer 12.
  • connection surface 225b and the connection surface 226b form a recess 16a.
  • the connection surface 225b and the connection surface 226b that form the recess 16a are separated by a distance D1 along the Y-axis direction. The same applies to each of the connection surfaces 225d and 226d, the connection surfaces 225f and 226f, the connection surfaces 225h, and the connection surfaces 225j and 226j that form the recess 16a.
  • connection surface 225a and the connection surface 226a form a recess 16b.
  • the connection surface 225a and the connection surface 226a that form the recess 16b are separated by a distance D2 along the Y-axis direction. The same applies to each of the connection surfaces 225c and 226c, the connection surfaces 225i and 226i, and the connection surfaces 225k and 226k that form the recess 16b.
  • connection surface 225e and the connection surface 226e form a recess 16c.
  • the connection surface 225e and the connection surface 226e that form the recess 16c are separated by a distance D3 along the Y-axis direction. The same applies to the connecting surfaces 225g and 226g forming the recessed portion 16c.
  • the distance D3 is longer than the distance D1 and the distance D2, and the distance D2 is longer than the distance D1.
  • the distance D1 is preferably 50 ⁇ m or more shorter than each of the distances D2 and D3.
  • the die 220 has a connection surface 225k from the connection surface 225a and a connection surface 226k from the connection surface 226a, thereby stabilizing the flow of the resin, so that the recess of the common coating layer 12 can be more reliably secured.
  • the distance P1 between adjacent central axes is equal.
  • the interval P1 is larger than the outer diameter of the optical fiber coated wire 11 and is less than or equal to the outer diameter of the optical fiber coated wire 11 plus 4 ⁇ m.
  • the optical fiber core 11 passes through the opening 224. Furthermore, ultraviolet curable resin is supplied to the opening 224 from the resin storage section 230. That is, the coating section 200 supplies the ultraviolet curable resin to the opening 224 of the die 220 while passing the plurality of optical fiber cores 11 through the opening 224 . An ultraviolet curable resin that becomes the common coating layer 12 is applied around the optical fiber core 11 that has passed through the opening 224 .
  • the X-axis direction is an example of the first direction
  • the upper surface 224a is an example of the first surface
  • the lower surface 224b is an example of the second surface
  • each of the cylindrical surfaces 221a to 221l is an example of the first cylindrical surface
  • the cylindrical surface 222a is an example of the first direction.
  • Each of the cylindrical surfaces 222l is an example of a second cylindrical surface.
  • the resin storage section 230 is a pressurized tank.
  • the resin storage section 230 supplies ultraviolet curable resin to the die 220.
  • the ultraviolet irradiation unit 240 irradiates the ultraviolet curable resin coated on the optical fiber core 11 with ultraviolet rays.
  • the ultraviolet curable resin is cured by being irradiated with ultraviolet rays. That is, the ultraviolet ray irradiation section 240 of the application section 200 cures the ultraviolet curable resin.
  • the 12 optical fiber cores 11 coated with ultraviolet curable resin are irradiated with ultraviolet light in the ultraviolet irradiation section 240 .
  • the cured ultraviolet curable resin becomes a common coating layer 12, and a 12-core optical fiber tape core 10 is formed.
  • the optical fiber tape core 10 that has been cured by being irradiated with ultraviolet rays by the ultraviolet irradiation section 240 is sent out to the conveyance section 300 through the guide rollers 250.
  • a step is performed in which a plurality of optical fiber cores are passed through the die 220 of the coating section 200 while supplying an ultraviolet curable resin to the opening 224. Further, in the ultraviolet irradiation section 240 of the application section 200, a step of curing the ultraviolet curable resin is performed.
  • the conveyance unit 300 includes a delivery capstan 310 and a winding tension control dancer roller 320.
  • the delivery capstan 310 sends out the optical fiber ribbon 10 at a predetermined speed.
  • the winding tension control dancer roller 320 controls the optical fiber tape core 10 to be wound to a predetermined tension.
  • the intermittent processing section 400 forms the intermittent connection section 31 of the optical fiber ribbon core 10.
  • the intermittent processing section 400 uses, for example, a cutting roller to make periodic incisions that penetrate in the thickness direction in a portion of the common coating layer 12 that becomes the intermittent connection section 31 of the optical fiber tape core 10.
  • the winding unit 500 winds up the optical fiber tape core 10 .
  • the winding unit 500 sets the tension at the time of winding the entire optical fiber ribbon to, for example, about 9.8 ⁇ 10 ⁇ 2 to 9.8 N.
  • the application section 200 is configured to include an extrusion section that extrudes the thermoplastic resin and a cooling section that cools the extruded resin. In either case, it is effective to harden the resin as soon as possible after passing through the die 220 in order to maintain the shape of the optical fiber tape core 10.
  • an optical fiber ribbon 10 was created from the optical fiber 11 having an outer diameter of 202 ⁇ m.
  • the outer diameter of the optical fiber coated wire 11 is an average value of the optical fiber coated wires 11 that constitute the optical fiber tape coated wire 10.
  • the interval P1 was 203 ⁇ m. That is, the interval P1 was set to be larger than the outer diameter of the optical fiber coated wire 11 and smaller than the value of the outer diameter of the optical fiber coated wire 11 plus 4 ⁇ m.
  • the distance D1 which is an index of the depth of the depression in the formed optical fiber ribbon 10, was 165 ⁇ m.
  • an optical fiber tape core 10 was similarly created in the case where the interval P1 was set to 207 ⁇ m. That is, the interval P1 was made larger than the sum of 202 ⁇ m, which is the outer diameter of the optical fiber core 11, and 4 ⁇ m.
  • the distance D1 which is an index of the depth of the depression in the formed optical fiber ribbon 10, was 205 ⁇ m.
  • the cutting roller in the intermittent machining section 400 is not guided by the recesses of the common coating layer 12, making it impossible to stably form cuts.
  • an optical fiber ribbon 10 was created using the optical fiber core 11 having an outer diameter of 250 ⁇ m.
  • the interval P1 was 251 ⁇ m. That is, the interval P1 was set to be larger than the outer diameter of the optical fiber coated wire 11 and smaller than the value of the outer diameter of the optical fiber coated wire 11 plus 4 ⁇ m.
  • the distance D1, which is an index of the depth of the depression in the formed optical fiber ribbon 10, was 202 ⁇ m.
  • an optical fiber tape core 10 was similarly created in the case where the interval P1 was set to 255 ⁇ m. That is, the interval P1 was made larger than the sum of 250 ⁇ m, which is the outer diameter of the optical fiber core 11, and 4 ⁇ m.
  • the distance D1 which is an index of the depth of the depression in the formed optical fiber ribbon 10, was 255 ⁇ m.
  • the cutting roller in the intermittent machining section 400 is not guided by the recesses of the common coating layer 12, making it impossible to stably form cuts.
  • the interval P1 that is, the distance between the central axes of adjacent cylindrical surfaces, is larger than the outer diameter of the optical fiber coated wire 11, and the optical fiber coated wire 11 4 ⁇ m added to the outer diameter of the outer diameter.
  • the interval P1 is larger than the outer diameter of the optical fiber coated wire 11 and less than or equal to the value of the outer diameter of the optical fiber coated wire 11 plus 4 ⁇ m, a gap is formed in the common coating layer 12 between adjacent optical fiber coated wires 11. It is possible to enlarge the depression. By enlarging the depressions formed in the common coating layer 12 between adjacent optical fiber cores 11, cuts can be stably formed in the intermittent processing section 400.
  • the above-mentioned distance of 4 ⁇ m does not depend on the outer diameter of the optical fiber core 11. That is, regardless of the outer diameter of the optical fibers 11, the distance between adjacent optical fibers 11, more specifically, the distance between the central axes of the cylindrical surfaces, is made as small as possible. Specifically, the distance between the center axes of the cylindrical surfaces of the openings 224 is set to be equal to or less than the outer diameter of the optical fiber 11 plus 4 ⁇ m.
  • the interval P1 is preferably as short as possible.
  • the distance between the central axes of the cylindrical surfaces of the openings 224 may be set to a value equal to or less than the outer diameter of the optical fiber 11 plus 2 ⁇ m.
  • the depression formed in the common covering layer 12 can be made larger, that is, deeper.
  • the die 220 according to this embodiment has a connecting surface between adjacent cylindrical surfaces
  • the adjacent cylindrical surfaces may be connected to each other.
  • the thicknesses of the recesses formed in the common covering layer may be made equal.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
PCT/JP2023/010220 2022-03-18 2023-03-16 ダイス、光ファイバテープ心線の製造方法及び光ファイバテープ心線の製造装置 Ceased WO2023176913A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023563329A JPWO2023176913A1 (https=) 2022-03-18 2023-03-16

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022044298 2022-03-18
JP2022-044298 2022-03-18

Publications (1)

Publication Number Publication Date
WO2023176913A1 true WO2023176913A1 (ja) 2023-09-21

Family

ID=88023370

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2023/010220 Ceased WO2023176913A1 (ja) 2022-03-18 2023-03-16 ダイス、光ファイバテープ心線の製造方法及び光ファイバテープ心線の製造装置

Country Status (2)

Country Link
JP (1) JPWO2023176913A1 (https=)
WO (1) WO2023176913A1 (https=)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005165363A (ja) * 2002-11-06 2005-06-23 Sumitomo Electric Ind Ltd 光ファイバテープ心線
WO2005103774A1 (ja) * 2004-04-22 2005-11-03 Lite-On Japan Ltd. グレーデッドインデックス型光伝送体の製造方法
JP2006292802A (ja) * 2005-04-06 2006-10-26 Sumitomo Electric Ind Ltd 光ファイバ心線の製造方法及び製造装置
JP2015003834A (ja) * 2013-06-19 2015-01-08 株式会社フジクラ 光ファイバ素線の製造方法
JP2019074644A (ja) * 2017-10-16 2019-05-16 住友電気工業株式会社 光ファイバテープ心線、ダイス、および、光ファイバテープ心線の製造方法
EP3663823A1 (en) * 2018-12-06 2020-06-10 Sterlite Technologies Limited Rollable optical fiber ribbon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005165363A (ja) * 2002-11-06 2005-06-23 Sumitomo Electric Ind Ltd 光ファイバテープ心線
WO2005103774A1 (ja) * 2004-04-22 2005-11-03 Lite-On Japan Ltd. グレーデッドインデックス型光伝送体の製造方法
JP2006292802A (ja) * 2005-04-06 2006-10-26 Sumitomo Electric Ind Ltd 光ファイバ心線の製造方法及び製造装置
JP2015003834A (ja) * 2013-06-19 2015-01-08 株式会社フジクラ 光ファイバ素線の製造方法
JP2019074644A (ja) * 2017-10-16 2019-05-16 住友電気工業株式会社 光ファイバテープ心線、ダイス、および、光ファイバテープ心線の製造方法
EP3663823A1 (en) * 2018-12-06 2020-06-10 Sterlite Technologies Limited Rollable optical fiber ribbon

Also Published As

Publication number Publication date
JPWO2023176913A1 (https=) 2023-09-21

Similar Documents

Publication Publication Date Title
US9116321B2 (en) Optical fiber cord
US10598888B2 (en) Intermittent connection type optical fiber ribbon having improved density, manufacturing method of the ribbon, optical fiber cable, and optical cable fiber code
WO2014181730A1 (ja) 光ファイバテープ心線及び光ファイバケーブル
JP2015052704A (ja) 光ファイバテープ心線、光ケーブル、光ファイバコード、及びテープ心線接続方法
EP3705923B1 (en) Optical fiber unit and optical fiber cable
US20170299830A1 (en) Optical Fiber Ribbon, and Optical-Fiber-Ribbon Production Method
CN104081234A (zh) 多芯光纤带
US20220026641A1 (en) Optical connector and optical connector manufacturing method
EP0967184B1 (en) Collectively coating die device for manufacturing separable optical fiber ribbon and manufacturing method
US5904883A (en) Method for producing optical fiber ribbon
US20080282741A1 (en) Production method of optical waveguide
WO2023176913A1 (ja) ダイス、光ファイバテープ心線の製造方法及び光ファイバテープ心線の製造装置
JP2019074644A (ja) 光ファイバテープ心線、ダイス、および、光ファイバテープ心線の製造方法
US11209605B2 (en) Optical fiber ribbon, die, and method of manufacturing optical fiber ribbon
JP3065057B1 (ja) 光ファイバテ―プ心線の製造方法及び製造装置
JP2013057846A (ja) 端面近接多芯光ファイバーおよびその製造方法およびその製造装置
JP7694576B2 (ja) 光ファイバテープ心線、ダイス、および光ファイバテープ心線の製造方法
KR20170138350A (ko) 플라스틱 광파이버 리본
JP3383022B2 (ja) 光ファイバテープ心線の製造方法
JPH06123826A (ja) 光ファイバテープ心線の製造方法
JP2024126856A (ja) 樹脂塗布装置用治具、樹脂塗布装置および光ファイバテープ心線の製造方法
WO2025023257A1 (ja) 光ファイバテープ心線および光ファイバテープ心線の製造方法
JP7006324B2 (ja) 光ファイバテープ心線用被覆装置、および、光ファイバテープ心線の製造方法
JP2006292802A (ja) 光ファイバ心線の製造方法及び製造装置
JPS63161418A (ja) テ−プ型光フアイバの製造装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2023563329

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23770866

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 23770866

Country of ref document: EP

Kind code of ref document: A1