WO2023013591A1 - 融着接続機 - Google Patents

融着接続機 Download PDF

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Publication number
WO2023013591A1
WO2023013591A1 PCT/JP2022/029512 JP2022029512W WO2023013591A1 WO 2023013591 A1 WO2023013591 A1 WO 2023013591A1 JP 2022029512 W JP2022029512 W JP 2022029512W WO 2023013591 A1 WO2023013591 A1 WO 2023013591A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
core
image
face
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/JP2022/029512
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
慎太郎 毛利
壮一 遠藤
彰紀 木村
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 JP2023540335A priority Critical patent/JPWO2023013591A1/ja
Priority to KR1020247005842A priority patent/KR20240035870A/ko
Priority to EP22853010.1A priority patent/EP4382978A4/en
Priority to CN202280049529.5A priority patent/CN117642662A/zh
Priority to US18/291,251 priority patent/US20250102735A1/en
Publication of WO2023013591A1 publication Critical patent/WO2023013591A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—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
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • 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
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G02B6/02042—Multicore optical 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
    • G02B6/24—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

Definitions

  • the present disclosure relates to fusion splicers. This application claims priority based on Japanese Application No. 2021-128213 dated August 4, 2021, and incorporates all the descriptions described in the Japanese Application.
  • Patent Document 1 describes a fusion splicing method.
  • a pair of V-groove bases on which a pair of optical fibers are respectively placed, an LED lamp arranged on each side of the pair of optical fibers, and a first apparatus for photographing the pair of optical fibers A television camera and a second television camera are used.
  • the LED lamp enters light into the optical fiber from the side of the optical fiber.
  • Light entering the optical fiber from the side is emitted from the end surface of the optical fiber.
  • a first television camera and a second television camera take images of the end face of the optical fiber that emits light.
  • Patent Document 2 describes a multi-core fiber having alignment markers.
  • the multi-core fiber is provided with a marker at a position shifted from the axis of line symmetry of the cross section.
  • the index of refraction of the marker is lower than the index of refraction of the core and the index of refraction of the cladding. Holes are used as markers.
  • this method of connecting multi-core fibers light is made incident from the opposite end face of the multi-core fibers whose end faces are arranged to face each other, and the arrangement of the core, cladding, and markers is displayed on the monitor.
  • the two multi-core fibers are moved in the axial direction so that the multi-core fibers are butted against each other and the cores of the multi-core fibers are fused.
  • a fusion splicer is a fusion splicer for fusion splicing a first end surface of a first optical fiber and a second end surface of a second optical fiber.
  • the axis of the first optical fiber coincides with the axis of the second optical fiber.
  • a fusion splicer photographs a first rotating mechanism that rotates a first optical fiber about an axis, a second rotating mechanism that rotates a second optical fiber about an axis, and a first end face and a second end face.
  • FIG. 1 is a perspective view showing a fusion splicer according to an embodiment.
  • 2 is a perspective view showing the internal structure of the fusion splicer of FIG. 1.
  • FIG. 3 is a schematic diagram of a first rotation mechanism and a second rotation mechanism of the fusion splicer according to the embodiment.
  • FIG. 4 is a diagram schematically showing an image observation mechanism of the fusion splicer according to the embodiment.
  • FIG. 5 is a block diagram for explaining functions of the fusion splicer according to the embodiment. 6 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment; FIG. FIG.
  • FIG. 7 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment
  • FIG. 8 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment
  • 9 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment
  • FIG. 10 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment
  • FIG. 11 is a diagram for explaining number display and angle display of the fusion splicer according to the embodiment
  • 12 is a diagram illustrating an example of an image displayed by the display unit of the fusion splicer according to the embodiment
  • a fusion splicer includes a camera that captures an end face of an optical fiber, and a monitor that displays the image captured by the camera. However, the monitor displays the image captured by the camera as it is. Therefore, an operator performing fusion splicing may not be able to accurately grasp the positions of the end surfaces of the pair of optical fibers. In the operation of rotating the optical fibers while looking at the image of the end face, it may not be possible to easily recognize the positions of the cores of the pair of optical fibers.
  • An object of the present disclosure is to provide a fusion splicer that can easily recognize the positions of the cores of a pair of optical fibers.
  • a fusion splicer is a fusion splicer that (1) fusion splices a first end face of a first optical fiber and a second end face of a second optical fiber to each other.
  • the axis of the first optical fiber coincides with the axis of the second optical fiber.
  • a fusion splicer photographs a first rotating mechanism that rotates a first optical fiber about an axis, a second rotating mechanism that rotates a second optical fiber about an axis, and a first end face and a second end face.
  • a microscope and a display unit that displays a first image of the first end surface photographed by the microscope on a second image of the second end surface photographed by the microscope in an identifiable manner. And prepare.
  • the first end surface of the first optical fiber and the second end surface of the second optical fiber are fusion spliced together.
  • the fusion splicer has a first rotating mechanism that rotates the first optical fiber about the axis and a second rotating mechanism that rotates the second optical fiber about the axis.
  • the fusion splicer has a microscope that photographs the first end face of the first optical fiber and the second end face of the second optical fiber.
  • the fusion splicer has a display unit for displaying a first image of the first end surface and a second image of the second end surface, and the display unit displays the first image as the second image and the first image and the second image. are superimposed and displayed in an identifiable manner.
  • the positions of the first end surface and the second end surface can be accurately grasped.
  • the positions of the core of the first optical fiber and the core of the second optical fiber can be easily recognized.
  • the display unit displays an X-axis extending in a direction orthogonal to the axis and a Y-axis extending in a direction orthogonal to both the axis and the X-axis together with the first image and the second image.
  • the positions in the X-axis direction and the Y-axis direction of the core of the first optical fiber and the core of the second optical fiber can be easily grasped.
  • the display unit may enlarge and display the designated portion of the first image and the second image.
  • the display section since the display section enlarges and displays the specified portion, the desired portion of the core of the first optical fiber and the core of the second optical fiber can be displayed in a more comprehensible manner.
  • the first optical fiber is a multi-core fiber having n first cores, where n is a natural number of 2 or more
  • the second optical fiber may be a multi-core fiber having n second cores.
  • the display unit may display a respective number from 1 to n with each of the n first cores, and display a respective number from 1 to n with each of the n second cores. In this case, a number from 1 to n is indicated with each first core and a number from 1 to n is indicated with each second core. Therefore, the position of the first core and the position of the second core can be recognized more easily.
  • the display unit is a line segment connecting the first core numbered with number x and the center of the first end face, where x is a natural number of 1 or more and n or less. , and a line segment connecting the second core numbered x and the center of the second end face.
  • the fusion splicer described above includes the first core numbered with number x, where x and y are natural numbers of 1 or more and n or less.
  • a core selection unit that selects the second core to be connected to may be provided.
  • the display section shows a line segment connecting the first core numbered x and the center of the first end face, and a second core selected in the core selection section and numbered y and the second end face.
  • a line segment connecting the center and an angle formed by the line segment may be displayed.
  • the core selection unit can select the second core to be connected to the first core numbered x.
  • the angle formed by the line segment connecting the x-numbered first core and the center of the first end face and the line segment connecting the selected y-numbered second core and the center of the second end face are displayed. Therefore, it is possible to grasp how many times the second optical fiber should be rotated with respect to the first optical fiber to connect the y-numbered second core to the x-numbered first core.
  • the fusion splicer may include a rotation angle designating section that designates the rotation angle of the first end face around the center of the first end face. good.
  • the display section may display the first end surface rotated by the rotation angle designated by the rotation angle designation section. In this case, since the first screen is displayed in a state rotated by the designated rotation angle, the state of the first end surface after rotation can be grasped before actually rotating the first optical fiber.
  • FIG. 1 is a perspective view showing a fusion splicer 1 according to an embodiment.
  • a fusion splicer 1 has a windshield cover 2 on its top.
  • FIG. 2 is a perspective view of the fusion splicer 1 with the windshield cover 2 opened.
  • the fusion splicer 1 has a box-shaped housing 3 .
  • the windshield cover 2 is provided to prevent wind from entering the fusion splice 4 .
  • the fusion splicer 1 includes a monitor 7 that displays the state of fusion splicing between optical fibers photographed by a microscope 18 (see FIG. 4) arranged inside the housing 3 .
  • the fusion splicer 1 includes a power switch 8 for switching on/off the power of the fusion splicer 1, and a connection start switch 9 for performing fusion splicing of optical fibers.
  • FIG. 3 is a perspective view schematically showing the fusion splicing part 4.
  • the fusion splicer 4 fusion splices the first optical fiber F1 and the second optical fiber F2 together.
  • the fusion splicer 4 has a first optical fiber holder 10A, a second optical fiber holder 10B, a first rotation mechanism 20A, and a second rotation mechanism 20B.
  • the first optical fiber holder 10A holds the first optical fiber F1
  • the second optical fiber holder 10B holds the second optical fiber F2.
  • the first rotating mechanism 20A rotates the first optical fiber holder 10A
  • the second rotating mechanism 20B rotates the second optical fiber holder 10B.
  • the first optical fiber F1 and the second optical fiber F2 are optical fibers that require rotational alignment in the fusion splicer 1, for example. That is, the first optical fiber F1 and the second optical fiber F2 are optical fibers whose positions in the ⁇ direction, which is the direction around the Z axis, must be matched.
  • the first optical fiber F1 and the second optical fiber F2 are a multi-core optical fiber (MCF: Multi Core Fiber) or a polarization maintaining fiber (PMF: Polarization Maintaining Fiber).
  • a pair of discharge electrodes 15 are arranged at positions where the first end face E1 of the first optical fiber F1 and the second end face E2 of the second optical fiber F2 face each other.
  • the pair of discharge electrodes 15 fuse the first end face E1 of the first optical fiber F1 and the second end face E2 of the second optical fiber F2 to each other by discharge.
  • a pair of discharge electrodes 15 are arranged at positions facing each other along a direction (for example, the X-axis direction) intersecting the first optical fiber F1 and the second optical fiber F2.
  • the first optical fiber holder 10A and the second optical fiber holder 10B are arranged along the Z-axis direction, which is the direction in which the axis of the first optical fiber F1 extends.
  • the first rotating mechanism 20A and the second rotating mechanism 20B are arranged along the Z-axis direction.
  • Each of the first optical fiber holder 10A and the second optical fiber holder 10B has a V groove 11 on which the first optical fiber F1 or the second optical fiber F2 is placed.
  • a first optical fiber F1 is positioned in the V-groove 11 of the first optical fiber holder 10A, and a second optical fiber F2 is positioned in the V-groove 11 of the second optical fiber holder 10B.
  • Each of the first optical fiber holder 10A and the second optical fiber holder 10B has a base 12 formed with a V-groove 11 and a lid 13 placed on the base 12 .
  • the base 12 and the lid 13 are arranged, for example, along the Y-axis direction that intersects both the X-axis direction and the Z-axis direction.
  • the fusion splicer 1 includes an image observation mechanism 16 that observes the first optical fiber F1 and the second optical fiber F2 arranged in the V-groove 11 .
  • FIG. 4 shows the configuration of the image observation mechanism 16.
  • the image observation mechanism 16 has a mirror 17 and a microscope 18, for example.
  • the mirror 17 has, for example, a triangular prism shape.
  • the cross-sectional shape of the mirror 17 in the YZ plane is an isosceles triangle.
  • Mirror 17 extends in the X-axis direction.
  • the mirror 17 has two surfaces that are inclined, for example, by 45 degrees with respect to both the Y-axis direction and the Z-axis direction. Each of the two surfaces is a reflecting surface.
  • the mirror 17 is installed movably in the Y-axis direction, for example, at an intermediate position in the Z-axis direction when the central axes of the first optical fiber F1 and the second optical fiber F2 are substantially aligned.
  • the light incident on the first optical fiber F1 and the second optical fiber F2 from the sides opposite to the end faces of the first optical fiber F1 and the second optical fiber F2 facing each other is emitted into the first optical fiber F1 and the second optical fiber F2.
  • F2 is emitted from the end face on the opposite side.
  • the microscope 18 observes the end surfaces of the first optical fiber F1 and the second optical fiber F2 by receiving the light reflected by the mirror 17 and traveling along the Y-axis direction.
  • the microscope 18 may include a first microscope 18b for observing the end face of the first optical fiber F1 and a second microscope 18c for observing the end face of the second optical fiber F2.
  • FIG. 5 is a diagram schematically showing the positional relationship among the mirror 17, the first optical fiber F1 (or the second optical fiber F2) and the microscope 18.
  • FIG. 5 the mirror 17 and the end of the first optical fiber F1, and the mirror 17 and the microscope 18 are arranged to face each other.
  • the microscope 18 observes the end surface of the first optical fiber F1 by receiving the light emitted from the first optical fiber F1 and reflected by the mirror 17 .
  • the mirror having two reflecting surfaces has been described above, the present invention is not limited to this.
  • a mirror having only one reflecting surface may be provided.
  • the mirror may be capable of appropriately changing the relative positions of the end face of the first optical fiber F1 (or the second optical fiber F2), the microscope 18, and the reflecting surface.
  • the microscope 18 has, for example, an objective lens and a camera.
  • the camera is a CCD camera (Charge-Coupled Device Camera), a CMOS camera (Complementary Metal Oxide Semiconductor Camera), or the like.
  • a microscope 18 photographs the first optical fiber F1 and the second optical fiber F2. Images of the first optical fiber F1 and the second optical fiber F2 photographed by the microscope 18 are transmitted to the controller 30 of the fusion splicer 1 as image data.
  • the fusion splicer 1 can observe the side surface of the first optical fiber F1 (or the second optical fiber F2) separately from the image observation mechanism 16 or using the same part as the image observation mechanism 16. mechanism. Even if the fusion splicer 1 is provided with a side image observation mechanism different from the image observation mechanism 16, images of the first optical fiber F1 and the second optical fiber F2 photographed by a microscope are used as image data for the fusion splicer. It may be transmitted to one control unit 30 .
  • control unit 30 for example, a CPU (Central Processing Unit) composed of one or more integrated circuits (ICs) is used. Functional elements of the control unit 30 (a display unit 31, a rotation angle specifying unit 32, and a core selection unit 33, which will be described later) are executed by the CPU.
  • the control unit 30 acquires the imaging results of the first optical fiber F1 and the second optical fiber F2 from the microscope 18 or from another microscope in addition to the microscope 18, and obtains the imaging results of the first optical fiber F1 and the second optical fiber F2. is stored in the control unit 30 .
  • the mirror 17 is retracted to a position where fusion splicing of the first optical fiber F1 and the second optical fiber F2 is not hindered.
  • FIG. 6 is a diagram showing an example of end face photographing results of each of the first optical fiber F1 and the second optical fiber F2.
  • the first optical fiber F1 is a multi-core fiber having n first cores F11
  • the second optical fiber F2 is a multi-core fiber having n second cores F21.
  • n is a natural number of 2 or more.
  • the first optical fiber F1 is a multi-core fiber having four first cores F11
  • the second optical fiber F2 is a multi-core fiber having four second cores F21.
  • the control unit 30 has a display unit 31 that displays on the monitor 7 a first image P1 of the first end face E1 of the first optical fiber F1 and a second image P2 of the second end face E2 of the second optical fiber F2.
  • the display unit 31 displays the states of the first end surface E1 and the second end surface E2 in the first area A1, the second area A2 and the third area A3 of the monitor 7.
  • FIG. For example, the first area A1 and the second area A2 are arranged on one side of the monitor 7 in the longitudinal direction (horizontal direction in the figure) along the lateral direction (vertical direction in the figure) of the monitor 7 .
  • the third area A3 is arranged on the other side of the monitor 7 in the longitudinal direction.
  • the display unit 31 superimposes the first image P1 on the second image P2 and displays the first image P1 and the second image P2 in an identifiable manner.
  • "Displaying the first image and the second image superimposed in an identifiable manner” means that the display manner of the first image and the display manner of the second image are made different from each other to distinguish the first image and the second image. This indicates that the display is to be performed in such a way that
  • FIG. 6 shows an example in which the display unit 31 displays the first image P1 with a solid line and the second image P2 with a broken line.
  • the method of “displaying the first image and the second image superimposed in an identifiable manner” is not limited to the above example. , transparency, semi-transparency, color change, or binarization display.
  • the display unit 31 displays the aforementioned X-axis and Y-axis together with the first image P1 and the second image P2.
  • the display unit 31 may display the coordinate axes of the X-axis and the Y-axis, or display the X-coordinate value and the Y-coordinate value of each position of the first end surface E1 and the second end surface E2 in the first image P1 and the second image P1. It may be displayed together with the image P2.
  • the display unit 31 may correct at least one of the position of the first end surface E1 and the position of the second end surface E2, and display the first image P1 and the second image P2 after position correction.
  • the display unit 31 displays the first image P1 in the first area A1, displays the second image P2 in the second area A2, and superimposes the first image P1 and the second image P2 in the third area A3.
  • Display the combined image For example, the photographed first image P1 of the first end face E1 and the second image P2 of the second end face E2 are respectively displayed as they are in the first area A1 and the second area A2.
  • the third area A3 for example, the first image P1 of the first end face E1 is displayed as it is, and the second end face E2 is reversed (inverted in the X-axis direction). Two images P2 are displayed.
  • the display unit 31 displays the first image P1 and the second image P2 so that the rotation states of the first optical fiber F1 and the second optical fiber F2 can be recognized by the marker M.
  • the control unit 30 may have, for example, a rotation angle designation unit 32, and the display unit 31 may display the first end surface E1 and the second end surface E2 rotated by the rotation angle designated by the rotation angle designation unit 32.
  • the rotation angle designating section 32 designates, for example, a rotation angle about each of the center of the first end face E1 and the center of the second end face E2.
  • the center of rotation may be changed as appropriate, and may be, for example, the center of the clad, the center of a designated core, or the center of gravity of a polygon formed by connecting the centers of multiple cores. .
  • the display unit 31 displays numbers 1 to n with each of the n first cores F11, and displays numbers 1 to n with each of the n second cores F21. number.
  • the control unit 30 recognizes the position of each first core F11 on the first end face E1 and the position of each second core F21 on the second end face E2.
  • the control unit 30 numbers the first core F11 and the second core F21 according to the recognized position of the first core F11 and the position of the second core F21.
  • the display unit 31 displays the numbers assigned to the first core F11 and the second core F21 together with the first image P1 and the second image P2.
  • FIG. 7 shows an example in which the display unit 31 displays numbers assigned inside the respective images of the first core F11 and the second core F21.
  • the monitor 7 may be able to select a specific location R on the display screen of the display unit 31.
  • FIG. The display unit 31 enlarges and displays the selected specific portion R, for example.
  • the display unit 31 displays the first core F11 and the first core F11 and the first core F11 and the first core F11 with the number x in a state in which the numbers are displayed in the respective images of the first core F11 and the second core F21.
  • An angle ⁇ 1 formed by a line segment L1 connecting the center O1 of the end face E1 and a line segment L2 connecting the center O2 of the second core F21 numbered x and the second end face E2 is shown.
  • x is a natural number greater than or equal to 1 and less than or equal to n.
  • FIG. 10 shows an example in which an angle ⁇ 1 formed by a line segment L1 connecting the first core F11 of No. 1 and the center O1 and a line segment L2 connecting the second core F21 of No. 1 and the center O2 is displayed.
  • the display unit 31 displays an angle ⁇ 1 formed by a line segment L1 connecting the i-th first core F11 and the center O1 and a line segment L2 connecting the i-th second core F21 and the center O2, and displays the angle ⁇ 1 formed by the j-th core. and the line segment connecting the second core F21 of the number j and the center O2.
  • i is a natural number of 1 or more and n or less
  • j is a natural number of 1 or more and n or less, other than i.
  • the control unit 30 includes a core selection unit 33 that selects the second core F21 connected to the first core F11 numbered x.
  • the display unit 31 displays a line segment L1 connecting the first core F11 numbered x and the center O1 of the first end surface E1, and a line segment L1 selected by the core selection unit 33 and numbered y.
  • the angle ⁇ 2 formed by the line segment L3 connecting the numbered second core F21 and the center O2 of the second end surface E2 may be displayed.
  • y is a natural number greater than or equal to 1 and less than or equal to n.
  • FIG. 11 shows an example in which an angle ⁇ 2 formed by a line segment L1 connecting the first core F11 of No. 1 and the center O1 and a line segment L3 connecting the second core F21 of No. 3 and the center O2 is displayed.
  • the display unit 31 displays an angle ⁇ 2 formed by a line segment L1 connecting the first core F11 of number p and the center O1 and a line segment L3 connecting the second core F21 of number q and the center O2.
  • the angle ⁇ 2 of the first core F11 other than the number q and the second core F21 other than the number q may be displayed.
  • p is a natural number of 1 or more and n or less
  • q is a value other than p and a natural number of 1 or more and n or less.
  • the effects obtained from the fusion splicer 1 according to this embodiment will be described.
  • the fusion splicer 1 has a first rotation mechanism 20A that rotates the first optical fiber F1 around the axis, and a second rotation mechanism 20B that rotates the second optical fiber F2 around the axis.
  • the fusion splicer 1 has a microscope 18 for photographing the first end face E1 of the first optical fiber F1 and the second end face E2 of the second optical fiber F2.
  • the fusion splicer 1 has a display section 31 that displays a first image P1 of the first end face E1 and a second image P2 of the second end face E2.
  • the display unit 31 displays the first image P1 superimposed on the second image P2 in such a manner that the first image P1 and the second image P2 can be distinguished from each other. Since the first image P1 and the second image P2 are superimposed and displayed in such a manner that the first image P1 and the second image P2 can be identified, the positions of the first end surface E1 and the second end surface E2 can be accurately grasped. can.
  • the positions of the first core F11 of the first optical fiber F1 and the second core F21 of the second optical fiber F2 can be easily recognized. can.
  • the display unit 31 may display the X-axis extending in the direction orthogonal to the axis and the Y-axis extending in the direction orthogonal to both the axis and the X-axis together with the first image P1 and the second image P2.
  • the positions in the X-axis direction and the Y-axis direction of the first core F11 of the first optical fiber F1 and the second core F21 of the second optical fiber F2 can be easily grasped.
  • the display unit 31 may enlarge and display the designated portion R of the first image P1 and the second image P2. In this case, since the display unit 31 enlarges and displays the designated portion R, the desired portion R of the first core F11 of the first optical fiber F1 and the second core F21 of the second optical fiber F2 is displayed in one layer. It can be displayed in an easy-to-understand manner.
  • the first optical fiber F1 may be a multi-core fiber having n first cores F11
  • the second optical fiber F2 may be a multi-core fiber having n second cores F21.
  • the display unit 31 may display numbers from 1 to n with each of the n first cores F11, and display numbers from 1 to n with each of the n second cores F21. In this case, numbers from 1 to n are displayed with each first core F11, and numbers from 1 to n are displayed with each second core F21, so the position of the first core F11 and the position of the second core F21 can be more easily recognized.
  • the display unit 31 includes a line segment L1 connecting the first core F11 numbered x and the center O1 of the first end face E1, a second core F21 numbered x and the second end face E2.
  • a line segment L2 connecting with the center O2 of and an angle ⁇ 1 formed by the line segment L2 may be displayed.
  • the deviation of the rotational position of the second core F21 with respect to the first core F11 can be grasped from the displayed angle ⁇ 1. Therefore, the operation of fusion splicing the first optical fiber F1 and the second optical fiber F2 can be easily performed. It is possible to grasp how many times the second optical fiber F2 should be rotated with respect to the first optical fiber F1 to connect the x-th second core F21 to the x-th first core F11.
  • the fusion splicer 1 may include a core selection unit 33 that selects the second core F21 to be connected to the first core F11 numbered x.
  • the display unit 31 displays a line segment L1 connecting the first core F11 numbered x and the center O1 of the first end surface E1, and a second core selected by the core selection unit 33 and numbered y.
  • An angle ⁇ 2 formed by a line segment L3 connecting the core F21 and the center O2 of the second end face E2 may be displayed.
  • the core selection unit 33 can select the second core F21 connected to the first core F11 numbered x.
  • the angle ⁇ 2 formed is displayed. Therefore, it is possible to grasp how many times the second optical fiber F2 should be rotated with respect to the first optical fiber F1 to connect the y-numbered second core F21 to the x-numbered first core F11.
  • the fusion splicer 1 may include a rotation angle specifying section 32 that specifies the rotation angle of the first end face E1 about the center O1 of the first end face E1.
  • the display unit 31 may display the first end surface E1 rotated by the rotation angle designated by the rotation angle designation unit 32 .
  • the display unit 31 may display the second end surface E2 rotated by the rotation angle designated by the rotation angle designation unit 32 .
  • the first image P1 or the second image P2 is displayed after being rotated by the specified rotation angle, before actually rotating the first optical fiber F1 or the second optical fiber F2, It is possible to grasp the state of the first end face E1 or the second end face E2.
  • the fusion splicer 1 has been described above. However, the invention is not limited to the embodiments described above. Those skilled in the art will readily recognize that the present invention is capable of various modifications and changes within the scope of the claims.
  • the configuration of each part of the fusion splicer can be changed as appropriate within the scope of the above 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 embodiments, and can be changed as appropriate.
  • the display mode of the superimposed image of the first image P1 and the second image P2 on the display unit 31 is not limited to the above-described embodiment, and can be further changed.
  • the display unit 31 may display an image of the end face of the reference optical fiber, which serves as a reference, in addition to the superimposed image of the first end face E1 and the second end face E2.
  • the reference optical fiber is an optical fiber that serves as a reference for rotational alignment of the first optical fiber F1 and the second optical fiber F2, and the same number of reference optical fiber cores F31 as the first optical fiber F1 and the second optical fiber F2 are formed. with polished end faces.
  • information on the reference optical fiber is stored in advance in the controller 30 .
  • the display unit 31 displays, for example, a line segment L1 connecting the first core F11 numbered x and the center O1 of the first end face E1, a reference optical fiber core F31 numbered x, and a reference light.
  • An angle ⁇ 3 formed by a line segment L4 connecting the center O3 of the end face of the fiber and the angle ⁇ 3 may be displayed.
  • the display unit 31 may display an angle ⁇ 4 formed by a line segment L2 and a line segment L4 connecting the center O2 of the second core F21 numbered x and the second end surface E2. In this case, it is possible to grasp how much each of the first optical fiber F1 and the second optical fiber F2 needs to be rotated to match the rotational position of the reference optical fiber.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
PCT/JP2022/029512 2021-08-04 2022-08-01 融着接続機 Ceased WO2023013591A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2023540335A JPWO2023013591A1 (https=) 2021-08-04 2022-08-01
KR1020247005842A KR20240035870A (ko) 2021-08-04 2022-08-01 융착 접속기
EP22853010.1A EP4382978A4 (en) 2021-08-04 2022-08-01 FUSION SPLICER
CN202280049529.5A CN117642662A (zh) 2021-08-04 2022-08-01 熔接机
US18/291,251 US20250102735A1 (en) 2021-08-04 2022-08-01 Fusion splicer

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JP2021128213 2021-08-04
JP2021-128213 2021-08-04

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WO2023013591A1 true WO2023013591A1 (ja) 2023-02-09

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EP (1) EP4382978A4 (https=)
JP (1) JPWO2023013591A1 (https=)
KR (1) KR20240035870A (https=)
CN (1) CN117642662A (https=)
WO (1) WO2023013591A1 (https=)

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JP2023078788A (ja) * 2021-11-26 2023-06-07 株式会社 オプトクエスト ファイバコリメータ対向系の調整装置及び製造方法
JP2023142934A (ja) * 2022-03-25 2023-10-06 古河電気工業株式会社 融着機
WO2024225217A1 (ja) * 2023-04-26 2024-10-31 古河電気工業株式会社 融着機、光ファイバの接続方法
WO2025134821A1 (ja) * 2023-12-18 2025-06-26 住友電気工業株式会社 融着接続機および融着接続方法
WO2025198649A3 (en) * 2023-10-23 2025-10-30 Ofs Fitel, Llc Improved splicing of hollow-core fibers
WO2026034298A1 (ja) * 2024-08-09 2026-02-12 住友電気工業株式会社 融着接続機および融着接続方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2023078788A (ja) * 2021-11-26 2023-06-07 株式会社 オプトクエスト ファイバコリメータ対向系の調整装置及び製造方法
JP7792239B2 (ja) 2021-11-26 2025-12-25 株式会社 オプトクエスト ファイバコリメータ対向系の調整装置及び製造方法
JP2023142934A (ja) * 2022-03-25 2023-10-06 古河電気工業株式会社 融着機
JP7813632B2 (ja) 2022-03-25 2026-02-13 古河電気工業株式会社 融着機
WO2024225217A1 (ja) * 2023-04-26 2024-10-31 古河電気工業株式会社 融着機、光ファイバの接続方法
WO2025198649A3 (en) * 2023-10-23 2025-10-30 Ofs Fitel, Llc Improved splicing of hollow-core fibers
WO2025134821A1 (ja) * 2023-12-18 2025-06-26 住友電気工業株式会社 融着接続機および融着接続方法
WO2026034298A1 (ja) * 2024-08-09 2026-02-12 住友電気工業株式会社 融着接続機および融着接続方法

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KR20240035870A (ko) 2024-03-18
EP4382978A4 (en) 2024-10-30
US20250102735A1 (en) 2025-03-27

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