WO2024181567A1 - 融着接続機 - Google Patents

融着接続機 Download PDF

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Publication number
WO2024181567A1
WO2024181567A1 PCT/JP2024/007825 JP2024007825W WO2024181567A1 WO 2024181567 A1 WO2024181567 A1 WO 2024181567A1 JP 2024007825 W JP2024007825 W JP 2024007825W WO 2024181567 A1 WO2024181567 A1 WO 2024181567A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
holder
base
light source
fusion splicer
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/JP2024/007825
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
彰紀 木村
慎太郎 毛利
壮一 遠藤
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 KR1020257031220A priority Critical patent/KR20250143128A/ko
Priority to JP2025504011A priority patent/JPWO2024181567A1/ja
Priority to EP24764044.4A priority patent/EP4675322A1/en
Priority to CN202480014594.3A priority patent/CN120752564A/zh
Publication of WO2024181567A1 publication Critical patent/WO2024181567A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
    • 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
    • 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
    • G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
    • 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 disclosure relates to a fusion splicer.
  • This application claims priority based on Japanese Application No. 2023-031376 filed on March 1, 2023, and incorporates by reference all of the contents of the above-mentioned Japanese application.
  • Patent Document 1 describes a fusion splicing device.
  • the fusion splicing device includes a pair of V-groove stands on which a pair of optical fibers are placed, LED lamps arranged on each side of the pair of optical fibers, and a first television camera and a second television camera for photographing the pair of optical fibers.
  • the LED lamps cause light to enter the optical fibers from the sides of the optical fibers.
  • the light that enters the optical fibers from the sides is emitted from the end faces of the optical fibers.
  • the first television camera and the second television camera capture images of the end faces of the optical fibers emitting light.
  • Patent Document 2 describes an optical fiber connection device.
  • the connection device connects a pair of photonic crystal fibers (PCFs) to each other.
  • the connection device includes two holding members that hold each of the two PCFs, a first drive unit that moves each holding member, a mirror located between the two PCFs, and a camera that captures the image reflected in the mirror.
  • light is irradiated onto the PCF from the camera using epi-illumination. This light illumination illuminates the entire end face of the PCF, allowing the core of the end face to be observed.
  • the fusion splicer comprises an optical fiber holder that holds an optical fiber, a rotation mechanism that rotates the optical fiber holder about an axis extending along the optical fiber, a clamping section that is disposed on the opposite side of the optical fiber holder from the rotation mechanism and holds the optical fiber held by the optical fiber holder, a light source that is disposed above the optical fiber holder and irradiates light onto the portion of the optical fiber that is held by the clamping section, and a power supplying section that supplies power to the light source.
  • the tip of the optical fiber protrudes from the clamping section, and at least a portion of the surface of the clamping section that faces the optical fiber is a highly reflective surface.
  • FIG. 1 is a diagram illustrating a fusion splicer according to an embodiment.
  • FIG. 2 is a side view that typically illustrates an optical fiber holder, a rotating mechanism, and a clamp unit of the fusion splicer according to the embodiment.
  • FIG. 3 is a perspective view that typically illustrates an optical fiber holder, a rotating mechanism, and a clamp unit of the fusion splicer according to the embodiment.
  • FIG. 4 is a side view showing a light source, a base of a clamp unit, and a cover of a fusion splicer according to an embodiment.
  • FIG. 5 is a side view diagrammatically showing an optical fiber holder, a rotating mechanism, and a clamp unit of a fusion splicer according to a first modified example.
  • FIG. 1 is a diagram illustrating a fusion splicer according to an embodiment.
  • FIG. 2 is a side view that typically illustrates an optical fiber holder, a rotating mechanism, and a clamp unit of the
  • FIG. 6 is a perspective view that typically shows an optical fiber holder, a rotating mechanism, and a clamp unit of a fusion splicer according to a first modified example.
  • FIG. 7 is a side view diagrammatically showing an optical fiber holder, a rotating mechanism, and a clamp unit of a fusion splicer according to a second modified example.
  • FIG. 8 is a perspective view that typically shows an optical fiber holder, a rotating mechanism, and a clamp unit of a fusion splicer according to a second modified example.
  • FIG. 9 is a side view showing a clamp unit and a non-transparent material of a fusion splicer according to a third modified example.
  • FIG. 10 is a front view showing a clamp unit and a non-transparent material of a fusion splicer according to a third modified example.
  • a light source such as the aforementioned epi-illumination illuminates the optical fiber to illuminate the end face of the optical fiber
  • a method is known in which light is incident on the optical fiber from the end face opposite the end face that is illuminated.
  • the light may not reach the end face that is illuminated, particularly when the optical fiber is long. As a result, the end face of the optical fiber may not be illuminated sufficiently.
  • the objective of this disclosure is to provide a fusion splicer that can sufficiently illuminate the end face of an optical fiber.
  • a fusion splicer includes: (1) an optical fiber holder that holds an optical fiber, a rotation mechanism that rotates the optical fiber holder about an axis extending along the optical fiber as a central axis, a clamping unit that is disposed on the opposite side of the rotation mechanism as viewed from the optical fiber holder in the direction along the central axis and presses the optical fiber held by the optical fiber holder, a light source that is disposed above the optical fiber holder and irradiates light onto a portion of the optical fiber that is pressed by the clamping unit, and a power supplying unit that supplies power to the light source.
  • a tip of the optical fiber protrudes from the clamping unit, and at least a part of a surface of the clamping unit that faces the optical fiber is a highly reflective surface.
  • a fusion splicer includes (2) an optical fiber holder that holds an optical fiber, a rotation mechanism that rotates the optical fiber holder about an axis extending along the optical fiber, a clamping section that is disposed on the opposite side of the rotation mechanism as viewed from the optical fiber holder in the direction along the central axis and presses the optical fiber held by the optical fiber holder, a light source that is disposed between the optical fiber holder and the clamping section in the direction along the central axis and that inputs light to the portion of the optical fiber that is pressed by the clamping section, and a power supplying section that supplies power to the light source.
  • the tip of the optical fiber protrudes from the clamping section, and at least a portion of the surface of the clamping section that faces the optical fiber is a highly reflective surface.
  • the optical fiber holder holds the optical fiber
  • the rotating mechanism rotates the optical fiber holder.
  • the fusion splicer has a clamping part that holds the optical fiber, and the clamping part is arranged on the opposite side of the optical fiber holder from the rotating mechanism.
  • the fusion splicer has a light source located above the optical fiber holder or between the optical fiber holder and the clamping part. The light source irradiates light onto the part of the optical fiber that is held by the clamping part. The tip of the optical fiber protrudes from the clamping part.
  • the end face of the optical fiber located at the tip of the optical fiber can be made to shine sufficiently.
  • "Sufficiently shining” means making it shine enough to be photographed by a camera.
  • At least a part of the surface of the clamping part that faces the optical fiber is a highly reflective surface. Therefore, the light irradiated from the light source to the optical fiber is reflected by the highly reflective surface and enters the optical fiber again. Therefore, the light irradiated from the light source can be confined in the optical fiber, so that the end face of the optical fiber can be made to shine more.
  • the clamping portion may have a base on which the optical fiber is placed, and a lid that covers the optical fiber placed on the base. At least a portion of the top surface of the base and at least a portion of the bottom surface of the lid may be highly reflective surfaces. In this case, the light can be reflected onto the optical fiber by the highly reflective surfaces located above and below the optical fiber. Therefore, the light can be more reliably confined to the optical fiber, making the end face of the optical fiber shine even more.
  • the highly reflective surface may be a polished surface.
  • the polished surface can be produced by polishing at least a portion of the surface of the clamp portion facing the optical fiber, so that the highly reflective surface can be easily formed.
  • the clamping unit may have a base on which the optical fiber is placed, and a lid that covers the optical fiber placed on the base.
  • the base may have a first surface facing away from the light source, and the lid may have a second surface facing away from the light source.
  • the fusion splicer may further include a non-transparent material that extends from the second surface toward the first surface and closes a gap formed between the lid and the base. In this case, the gap formed between the lid and the base is closed with the non-transparent material, thereby preventing light from leaking from the gap to the tip of the optical fiber. Therefore, the captured image of the end face of the optical fiber can be made clearer.
  • the fusion splicer may include a holder stand on which the optical fiber holder is mounted.
  • the optical fiber holder may be removable from the holder stand.
  • the fusion splicer includes a holder stand, and the optical fiber holder is removable from the holder stand. Since the optical fiber holder is removable from the holder stand, the optical fiber can be easily attached to and detached from the rotating mechanism.
  • FIG. 1 is a diagram for explaining an overview of the fusion splicer 1 according to this embodiment.
  • the fusion splicer 1 fusion-splices a pair of optical fibers F together.
  • the fusion splicer 1 has an optical fiber holder 10 having a V-groove 11, and a rotation mechanism 20 that rotates the optical fiber holder 10.
  • the axes of the pair of optical fibers F coincide with each other.
  • the "axis" refers to the center line of the optical fiber that passes through the center of the optical fiber and extends along the direction in which the optical fiber extends.
  • the optical fiber holder 10 and the rotation mechanism 20 are aligned along the axial direction, which is the direction in which the axis of the optical fiber F extends.
  • the axial direction of the optical fiber F is the Z axis direction.
  • the fusion splicer 1 includes a pair of optical fiber holders 10 aligned along the Z axis direction, which is the direction in which each of the pair of optical fibers F extends, and a pair of rotation mechanisms 20 aligned along the Z axis direction.
  • the optical fiber F to be fusion spliced is positioned in the V groove 11 of each optical fiber holder 10.
  • the optical fiber holder 10 is made of metal, for example.
  • the optical fiber holder 10 holds, for example, a coated portion of the optical fiber F.
  • the optical fiber holder 10 holds the tip F1 of the optical fiber F in a state in which it protrudes in the Z axis direction.
  • the rotation mechanism 20 is arranged on the opposite side of the tip F1 of the optical fiber F as viewed from the optical fiber holder 10.
  • a pair of discharge electrodes 2 are arranged at positions where the tips F1 of the pair of optical fibers F face each other.
  • the pair of discharge electrodes 2 are arranged at positions where they face each other along a direction (e.g., the X-axis direction) that intersects with the optical fibers F.
  • the optical fiber holder 10 has a base 12 on which the optical fibers F are placed and in which a V-groove 11 extending along, for example, the Z-axis direction is formed, and a lid 13 that is placed on the base 12.
  • the base 12 and the lid 13 are arranged, for example, so as to be aligned along the Y-axis direction that intersects both the X-axis direction and the Z-axis direction.
  • the pair of discharge electrodes 2 fusion-splices the tips F1 of the pair of optical fibers F together by discharge.
  • the fusion splicer 1 has a control unit 3 that controls each part of the fusion splicer 1.
  • the control unit 3 controls the discharge current and discharge time of the discharge electrodes 2, so that fusion splicing is performed under fusion conditions suited to the type of optical fiber F.
  • the control unit 3 aligns the pair of optical fibers F.
  • the control unit 3 adjusts the position of each optical fiber F in the X-axis direction and the Y-axis direction, and also aligns the pair of optical fibers F so that they are aligned in a straight line along the Z-axis direction. That is, the control unit 3 aligns the pair of optical fibers F in the X-axis direction, the Y-axis direction, and the Z-axis direction.
  • the control unit 3 aligns the optical fibers F in the ⁇ direction by controlling the rotation mechanism 20 to rotate the optical fibers F around an axis (which is the same as the Z-axis in the figure) that extends along the center of the optical fibers F.
  • the optical fiber F is, for example, an optical fiber that requires rotational alignment in the fusion splicer 1.
  • the optical fiber F is an optical fiber that requires the positions of the core, cladding, markers, etc. in the ⁇ direction of a pair of optical fibers F to be aligned.
  • the optical fiber F is a multi-core optical fiber (MCF: Multi Core Fiber) or a polarization maintaining fiber (PMF: Polarization Maintaining Fiber).
  • FIG. 2 is a side view showing the configuration around the optical fiber holder 10.
  • FIG. 3 is a perspective view showing the configuration around the optical fiber holder 10.
  • the fusion splicer 1 includes a clamp unit 30 that holds the tip F1 of the optical fiber F held by the optical fiber holder 10, a holder base 40 fixed to the rotation mechanism 20, and a light source 50.
  • the base 12 of the optical fiber holder 10 protrudes in the Z-axis direction beyond the lid 13.
  • the portion of the optical fiber F held by the clamping portion 30 is, for example, a coated portion of the optical fiber F. Only the portion of the optical fiber F that protrudes from the clamping portion 30 is the portion from which the coating has been removed. However, the portion held by the clamping portion 30 may also be the portion of the optical fiber F from which the coating has been removed (for example, the portion from which the glass of the optical fiber F is exposed).
  • the length of the portion of the optical fiber F that protrudes from the clamping portion 30 is, for example, 5 mm or less.
  • the holder base 40 is made of metal, for example.
  • the holder base 40 has a mounting surface 41 on which the optical fiber holder 10 is mounted.
  • the optical fiber holder 10 is removable from the holder base 40.
  • the optical fiber holder 10 removed from the holder base 40 holds the optical fiber F, and the optical fiber holder 10 holding the optical fiber F can be mounted on the holder base 40.
  • the holder base 40 extends from the rotation mechanism 20 in the Z-axis direction.
  • the rotation mechanism 20 is disposed on the opposite side of the tip F1 (end face) when viewed from the optical fiber holder 10.
  • the rotation mechanism 20 has, for example, a recess 20b into which the optical fiber F is inserted.
  • the recess 20b has a slit shape recessed along the Y-axis direction from the outer peripheral surface of the rotation mechanism 20.
  • the rotation mechanism 20 rotates the optical fiber F together with the holder base 40 and the optical fiber holder 10, for example, around an axis extending along the center of the optical fiber F.
  • the rotation mechanism 20 includes, for example, a motor (not shown) and a gear (not shown).
  • the motor of the rotation mechanism 20 is driven and the rotational driving force of the motor is transmitted to the holder base 40 and the optical fiber holder 10 via the gear, causing the holder base 40 and the optical fiber holder 10 to rotate.
  • the optical fiber F is inserted into the recess 20b of the rotation mechanism 20 and is held by the optical fiber holder 10. Therefore, as the holder base 40 and the optical fiber holder 10 are rotated by the rotation mechanism 20, the clamp section 30 and the optical fiber F rotate.
  • the clamp unit 30 is provided to hold the optical fiber F protruding from the optical fiber holder 10.
  • the clamp unit 30 has, for example, a base 31 on which the optical fiber F is placed, and a lid 32 that covers the optical fiber F placed on the base 31.
  • the clamp unit 30 holds the optical fiber F by clamping the optical fiber F extending from the optical fiber holder 10 in the Z-axis direction between the base 31 and the lid 32.
  • the base 31 is a portion of the base 12 of the optical fiber holder 10 that protrudes in the Z-axis direction.
  • the end face 31c of the base 31 located opposite the rotation mechanism 20 protrudes in the Z-axis direction further than the end face 13b of the lid 13 located opposite the rotation mechanism 20 and the end face 40b of the holder base 40 located opposite the rotation mechanism 20.
  • a V-groove 31g in which the optical fiber F is placed is formed in a portion of the upper surface 31b of the base 31.
  • the V-groove 31g is a groove that has a V-shaped cross section in the XY plane in Figure 3 or Figure 5 and extends in the Z direction.
  • the optical fiber F placed in the V-groove 31g is sandwiched between the upper surface of the V-groove 31g and the lower surface 32b of the lid 32.
  • the clamp unit 30 has a first portion 33 that protrudes from the holder base 40 in the Y-axis direction, a second portion 34 that extends from the first portion 33 in the X-axis direction and is located above the lid 13, and a third portion 35 that extends from the second portion 34 in the Z-axis direction.
  • the lid 32 protrudes downward at the end of the third portion 35 opposite the second portion 34.
  • Down refers to the direction in which the clamp unit holds the optical fiber
  • up refers to the opposite direction to down.
  • Up and down refers to up and down.
  • the light source 50 is disposed adjacent to the base 31 and the lid 32.
  • the light source 50 is disposed above the base 12.
  • the light source 50 is disposed between the lid 13 of the optical fiber holder 10 and the lid 32 of the clamping portion 30.
  • the light source 50 is fixed to the underside of the third portion 35.
  • FIG. 4 is an enlarged side view of the clamping portion 30 and the light source 50.
  • the light source 50 is disposed to input light L from the side to the optical fiber F.
  • the light source 50 irradiates light L to the portion of the optical fiber F that is held down by the clamping portion 30. For example, the light source 50 irradiates light L diagonally downward toward the optical fiber F.
  • the light source 50 is an LED light source.
  • the fusion splicer 1 includes a power source 61, and the light source 50 receives power from the power source 61 via a power supply unit 62 and emits light.
  • the power supply unit 62 indicates a unit that supplies power to the light source 50, and indicates, for example, a part of the fusion splicer 1 that is electrically connected to the light source 50.
  • the power supply unit 62 may be a wiring part of the fusion splicer 1 that is connected to a power source (for example, a household power source or a socket) when, for example, it is driven by an AC power source (the fusion splicer 1 does not have a battery or a battery).
  • the power supply unit 62 may be a wiring part inside the fusion splicer 1 that is connected to the battery or the battery.
  • the fusion splicer 1 may have a dedicated battery or battery to which the power supply unit 62 that supplies power to the light source 50 is connected.
  • the base 31 has an upper surface 31b facing the optical fiber F
  • the lid 32 has a lower surface 32b facing the optical fiber F.
  • the optical fiber F is sandwiched between the upper surface 31b and the lower surface 32b.
  • the optical fiber F is sandwiched between a V-groove 31g formed in the upper surface of the base 31 and the lower surface 32b of the lid 32.
  • At least a part of the surface of the clamp section 30 facing the optical fiber F is a highly reflective surface 39.
  • a highly reflective surface is a surface that has been processed to increase the reflectance of incident light, or a surface to which a reflective film or the like is attached.
  • a highly reflective surface is a surface that has been polished and finished to a mirror finish.
  • the highly reflective surface may also be a surface to which a reflective material is attached.
  • the highly reflective surface 39 is a polished surface.
  • a polished surface is a surface that has been polished.
  • the highly reflective surface 39 is a surface that has been polished with an abrasive.
  • the upper surface 31b of the base 31, which includes the V-groove 31g, and the lower surface 32b of the lid 32 are highly reflective surfaces 39.
  • Light L is incident from the light source 50 on the portion of the optical fiber F that is sandwiched between the base 31 and the lid 32. At this time, the light L propagates inside the optical fiber F while being reflected by the V-groove 31g of the base 31 and the lower surface 32b of the lid 32. Therefore, the light L can reach the tip F1 (end face) of the optical fiber F.
  • the upper surface 31b of the base 31 including the V groove 31g and the lower surface 32b of the lid 32 are the highly reflective surface 39.
  • a part of the V groove 31g and a part of the lower surface 32b may be the highly reflective surface 39.
  • either the V groove 31g or the lower surface 32b may be the highly reflective surface 39.
  • a part of the upper surface 31b including the V groove 31g may be the highly reflective surface 39.
  • the optical fiber holder 10 holds the optical fiber F
  • the rotating mechanism 20 rotates the optical fiber holder 10.
  • the fusion splicer 1 has a clamping section 30 that holds the optical fiber F, and the clamping section 30 is disposed on the opposite side of the optical fiber holder 10 from the rotating mechanism 20.
  • the fusion splicer 1 has a light source 50 located above the optical fiber holder 10. The light source 50 irradiates light L onto the portion of the optical fiber F that is held by the clamping section 30. The tip F1 of the optical fiber F protrudes from the clamping section 30.
  • the light source 50 located above the optical fiber holder 10 irradiates light L onto the portion of the optical fiber F that is held by the clamping section 30. This allows the end face of the optical fiber F located at the tip F1 of the optical fiber F to be sufficiently illuminated. At least a part of the surface of the clamping section 30 that faces the optical fiber F is a highly reflective surface 39. Therefore, the light L irradiated from the light source 50 to the optical fiber F is reflected by the highly reflective surface 39 and enters the optical fiber F again. Therefore, the light L irradiated from the light source 50 can be confined in the optical fiber F, so that the end face of the optical fiber F can be made brighter.
  • the clamp unit 30 may have a base 31 on which the optical fiber F is placed, and a lid 32 that covers the optical fiber F placed on the base 31. At least a portion of the upper surface 31b of the base 31 and at least a portion of the lower surface 32b of the lid 32 may be highly reflective surfaces 39.
  • the light L can be reflected onto the optical fiber F by the highly reflective surfaces 39 located above and below the optical fiber F. Therefore, the light L can be more reliably confined to the optical fiber F, making the end face located at the tip F1 of the optical fiber F shine even more brightly.
  • the highly reflective surface 39 may be a polished surface.
  • the polished surface can be produced by polishing at least a portion of the surface of the clamp portion 30 facing the optical fiber F, so that the highly reflective surface 39 can be easily formed.
  • the highly reflective surface 39 may be a surface formed by a reflective film attached to the clamp.
  • the fusion splicer 1 may include a holder base 40 on which the optical fiber holder 10 is mounted.
  • the optical fiber holder 10 may be removable from the holder base 40.
  • the fusion splicer 1 includes the holder base 40, and the optical fiber holder 10 is removable from the holder base 40. Since the optical fiber holder 10 is removable from the holder base 40, the optical fiber F can be easily attached and detached from the rotation mechanism 20.
  • FIG. 5 is a side view of a fusion splicer 1A according to a first modified example.
  • Figure 6 is a perspective view of the fusion splicer 1A.
  • the fusion splicer 1A differs from the fusion splicer 1 in the configuration of the clamp unit 30A and the surroundings of the light source 50.
  • the clamp unit 30A has a base 31A and a lid 32.
  • the base 31A has an end face 31d located opposite the rotation mechanism 20.
  • the end face 31d is flush with the end face 40b of the holder base 40 located opposite the rotation mechanism 20.
  • the clamp unit 30A has a first portion 33b protruding from the holder base 40 in the Y-axis direction, and a second portion 34b extending from the first portion 33 in the X-axis direction and located above the base 31A.
  • the lid 32 protrudes downward at the second portion 34b.
  • the light source 50A is held by a light source holding mechanism 51.
  • the light source holding mechanism 51 has a third portion 52 that protrudes from the holder base 40 in the Y-axis direction, and a fourth portion 53 that extends from the third portion 52 in the X-axis direction and is located above the base 12.
  • the light source 50A is fixed to the underside of the fourth portion 53.
  • the light source 50A irradiates light L onto the portion of the optical fiber F that is held down by the clamp portion 30A.
  • the light L is repeatedly reflected by the highly reflective surface 39 formed in the V-groove 31g of the base 31A and the highly reflective surface 39 formed on the underside 32b of the lid 32.
  • FIG. 7 is a side view of a fusion splicer 1B according to a second modified example.
  • FIG. 8 is a perspective view of the fusion splicer 1B.
  • the fusion splicer 1B differs from the fusion splicer 1 in that it has a clamping section 30B that is different from the clamping section 30, and in that the light source 50 does not rotate together with the optical fiber holder 10.
  • the clamp unit 30B has a base 31B that is separate from the holder base 40, and a lid 32B that covers the optical fiber F placed on the base 31B.
  • the lid 32B is held by a lid holding mechanism 36.
  • the lid holding mechanism 36 has a first portion 37 that protrudes in the Y-axis direction relative to the base 31B, and a second portion 38 that extends in the X-axis direction from the first portion 37.
  • the lid 32B is held by the underside of the second portion 38.
  • the light source 50 is held by a light source holding mechanism 55 arranged adjacent to the lid holding mechanism 36.
  • the light source 50 and the light source holding mechanism 55 are arranged between the optical fiber holder 10 and the clamping section 30B.
  • the light source holding mechanism 55 has a third part 56 extending parallel to the first part 37 and a fourth part 57 extending from the third part 56 in the X-axis direction.
  • the light source 50 is held on the lower surface of the fourth part 57.
  • the fusion splicer 1B has a light source 50 arranged between the optical fiber holder 10 and the clamping section 30B, which inputs light L to the part of the optical fiber F pressed by the clamping section 30B.
  • the light L is repeatedly reflected by the highly reflective surface 39 formed in the V-groove 31g of the base 31 and the highly reflective surface 39 formed on the lower surface 32b of the lid 32. Therefore, the fusion splicer 1B can achieve the same effect as the fusion splicer 1 described above.
  • FIG. 9 is a side view showing the clamp unit 30C of the fusion splicer 1C according to the third modified example.
  • FIG. 10 is a front view showing the clamp unit 30C.
  • the clamp unit 30C has a base 31C and a lid 32C.
  • the base 31C has a first surface 31f facing away from the light source 50.
  • the lid 32C has a second surface 32f facing away from the light source 50.
  • the fusion splicer 1C has a non-transparent material 70 that seals the gap formed between the lid 32C and the base 31C.
  • the non-transparent material 70 fills the gap formed between the lid 32C and the base 31C except for the portion from which the optical fiber F protrudes.
  • the non-transparent material 70 is fixed to the second surface 32f of the lid 32C.
  • the non-transparent material 70 extends from the second surface 32f toward the first surface 31f of the base 31C.
  • the gap formed between the lid 32C and the base 31C is filled with the non-transparent material 70, thereby preventing light from leaking from the gap to the tip F1 of the optical fiber F. This makes it possible to capture a clearer image of the end face of the tip F1 of the optical fiber F.
  • each part of the fusion splicer can be modified as appropriate within the scope of the above-described gist.
  • the shape, size, number, material, and arrangement of each part of the fusion splicer according to the present disclosure are not limited to the above-described embodiment or modified examples, and can be modified as appropriate.
  • the fusion splicer according to the present disclosure may be a combination of two or more of the above-described embodiment, first modified example, second modified example, and third modified example.
  • the optical fiber holder 10 is detachable from the holder base 40.
  • the optical fiber holder does not have to be detachable from the holder base.
  • the fusion splicer does not have to have a holder base 40.
  • the fusion splicer may have the optical fiber holder 10 fixed to the rotation mechanism 20.
  • Second surface 3 33b...First part 34, 34b...Second part 35...Third part 36...Lid holding mechanism 37...First part 38...Second part 39...High reflective surface 40...Holder stand 40b...End face 41...Mounting surface 50...Light source 51...Light source holding mechanism 52...Third part 53...Fourth part 55...Light source holding mechanism 56...Third part 57...Fourth part 61...Power source 62...Power supply part 70...Non-transparent material F...Optical fiber F1...Tip L...Light

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
PCT/JP2024/007825 2023-03-01 2024-03-01 融着接続機 Ceased WO2024181567A1 (ja)

Priority Applications (4)

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KR1020257031220A KR20250143128A (ko) 2023-03-01 2024-03-01 융착 접속기
JP2025504011A JPWO2024181567A1 (https=) 2023-03-01 2024-03-01
EP24764044.4A EP4675322A1 (en) 2023-03-01 2024-03-01 Fusion splicer
CN202480014594.3A CN120752564A (zh) 2023-03-01 2024-03-01 熔接机

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JP2023031376 2023-03-01

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JP (1) JPWO2024181567A1 (https=)
KR (1) KR20250143128A (https=)
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WO (1) WO2024181567A1 (https=)

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JP2001330749A (ja) * 2000-05-22 2001-11-30 Fujikura Ltd 定偏波光ファイバ融着接続方法及びそのための融着接続機
JP2004053625A (ja) 2002-07-16 2004-02-19 Mitsubishi Cable Ind Ltd 光ファイバの接続方法及び光ファイバの接続装置
JP2004126379A (ja) * 2002-10-04 2004-04-22 Furukawa Electric Co Ltd:The Ｐｍ光ファイバ融着接続機及びｐｍ光ファイバの融着接続方法
WO2013077002A1 (ja) 2011-11-21 2013-05-30 株式会社フジクラ 光ファイバの融着接続方法
JP2017021190A (ja) * 2015-07-10 2017-01-26 三菱電線工業株式会社 マルチコア光ファイバの接続方法
US20200355878A1 (en) * 2019-05-09 2020-11-12 Afl Telecommunications Llc Control systems and methods for aligning multimode optical fibers
WO2022239809A1 (ja) * 2021-05-13 2022-11-17 住友電気工業株式会社 融着接続機
WO2022244843A1 (ja) * 2021-05-21 2022-11-24 住友電気工業株式会社 融着接続機
WO2023013606A1 (ja) * 2021-08-05 2023-02-09 住友電気工業株式会社 融着接続機
JP2023031376A (ja) 2021-08-25 2023-03-09 大阪瓦斯株式会社 エンジンシステム

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001330749A (ja) * 2000-05-22 2001-11-30 Fujikura Ltd 定偏波光ファイバ融着接続方法及びそのための融着接続機
JP2004053625A (ja) 2002-07-16 2004-02-19 Mitsubishi Cable Ind Ltd 光ファイバの接続方法及び光ファイバの接続装置
JP2004126379A (ja) * 2002-10-04 2004-04-22 Furukawa Electric Co Ltd:The Ｐｍ光ファイバ融着接続機及びｐｍ光ファイバの融着接続方法
WO2013077002A1 (ja) 2011-11-21 2013-05-30 株式会社フジクラ 光ファイバの融着接続方法
JP2017021190A (ja) * 2015-07-10 2017-01-26 三菱電線工業株式会社 マルチコア光ファイバの接続方法
US20200355878A1 (en) * 2019-05-09 2020-11-12 Afl Telecommunications Llc Control systems and methods for aligning multimode optical fibers
WO2022239809A1 (ja) * 2021-05-13 2022-11-17 住友電気工業株式会社 融着接続機
WO2022244843A1 (ja) * 2021-05-21 2022-11-24 住友電気工業株式会社 融着接続機
WO2023013606A1 (ja) * 2021-08-05 2023-02-09 住友電気工業株式会社 融着接続機
JP2023031376A (ja) 2021-08-25 2023-03-09 大阪瓦斯株式会社 エンジンシステム

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See also references of EP4675322A1

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KR20250143128A (ko) 2025-09-30
CN120752564A (zh) 2025-10-03
JPWO2024181567A1 (https=) 2024-09-06
EP4675322A1 (en) 2026-01-07

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