WO2022138951A1 - コネクタ付きケーブル - Google Patents

コネクタ付きケーブル Download PDF

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Publication number
WO2022138951A1
WO2022138951A1 PCT/JP2021/048358 JP2021048358W WO2022138951A1 WO 2022138951 A1 WO2022138951 A1 WO 2022138951A1 JP 2021048358 W JP2021048358 W JP 2021048358W WO 2022138951 A1 WO2022138951 A1 WO 2022138951A1
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WO
WIPO (PCT)
Prior art keywords
connector
cable
core
optical fiber
accommodating portion
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/JP2021/048358
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
哲也 中西
貴之 島津
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 EP21911088.9A priority Critical patent/EP4206769A4/en
Priority to CN202180078410.6A priority patent/CN116472479A/zh
Priority to JP2022571705A priority patent/JP7845195B2/ja
Publication of WO2022138951A1 publication Critical patent/WO2022138951A1/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
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4439—Auxiliary devices
    • G02B6/444—Systems or boxes with surplus lengths
    • G02B6/4441—Boxes
    • G02B6/4442—Cap coupling boxes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3897—Connectors fixed to housings, casing, frames or circuit boards
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—Mechanical coupling means
    • G02B6/40—Mechanical coupling means having fibre bundle mating means
    • G02B6/403—Mechanical coupling means having fibre bundle mating means of the ferrule type, connecting a pair of ferrules
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4429—Means specially adapted for strengthening or protecting the cables
    • G02B6/443—Protective covering
    • G02B6/4431—Protective covering with provision in the protective covering, e.g. weak line, for gaining access to one or more fibres, e.g. for branching or tapping

Definitions

  • the present disclosure relates to cables with connectors.
  • This application claims priority based on Japanese Application No. 2020-217223 filed on December 25, 2020, and incorporates all the contents described in the Japanese application.
  • Patent Document 1 discloses an optical cable traction tool used for traction laying of a cable with a connector.
  • the optical cable traction tool of Patent Document 1 accommodates a plurality of optical connectors that terminate each of the plurality of optical fiber tips so that they can be connected to each other. Therefore, after the optical cable is towed and laid in the duct, it is easy to connect to other optical fibers and the like.
  • the cable with a connector of the present disclosure includes a plurality of multi-core optical fibers and a plurality of connectors attached to one end of the plurality of multi-core optical fibers.
  • FIG. 1A is a plan view of a cable with a connector according to the first embodiment of the present disclosure.
  • FIG. 1B is a plan view of a cable with a connector according to the second embodiment of the present disclosure.
  • FIG. 2 is a cross-sectional view of an optical fiber core wire of the cable with a connector shown in FIGS. 1A and 1B.
  • FIG. 3 is a plan view showing a state in which the traction tool is removed from one end of the cable with a connector shown in FIGS. 1A and 1B.
  • FIG. 4 is a schematic view showing a modification 1 of the cable with a connector of the present disclosure.
  • FIG. 5 is a schematic view of the tip end portion of the multiple connector included in the modification 1 of the cable with a connector of the present disclosure.
  • FIG. 6 is a schematic view of a tip portion of a modified example of the multiple connector.
  • FIG. 7 is a plan view showing a modification 2 of the cable with a connector of the present disclosure.
  • the optical cable traction tool of Patent Document 1 is used for a single-core optical fiber having one core in one optical fiber, and accommodates a plurality of one connector corresponding to one core. If the optical cable traction tool of Patent Document 1 is used for a super multi-core cable, the number of connectors increases, and as a result, the entire optical cable traction tool becomes thick and long. An optical cable traction tool having such an excessively large size is particularly difficult to pass through a bent duct, and cannot properly tow a super multi-core cable.
  • the present disclosure provides a cable with a connector that is a super multi-core cable and can be towed with a small optical cable traction tool.
  • the cable with a connector includes a plurality of multi-core optical fibers and a plurality of connectors attached to one end of the plurality of multi-core optical fibers.
  • the cable with a connector of this embodiment it is not necessary to arrange a large number of connectors corresponding to each core, and it is sufficient to arrange connectors according to the number of multi-core optical fibers. That is, the number of connectors per cable can be reduced. Since the number of connectors accommodated by the optical cable traction tool can be reduced, it is possible to realize an ultramulticentric cable that can be towed even with a small optical cable traction tool without reducing the number of cores per cable.
  • the plurality of connectors are multi-core connectors, and the core number density in each of the plurality of connectors may be 2 cores / mm 2 or more. According to this aspect, it is possible to realize a cable with a connector in which a plurality of multi-core optical fibers are mounted at high density.
  • the cable with a connector is provided with a single-core optical fiber, in order to realize a core number density of 2 cores / mm 2 or more in a general multi-core connector, the cable with a connector has 36 optical fibers at once. It is necessary to have a multi-core connector to connect. However, a multi-core connector for connecting 36 optical fibers at once is generally expensive, and it is difficult to guarantee the hole forming accuracy.
  • the optical fiber core wire included in the cable with a connector of the present disclosure is a multi-core optical fiber, a core number density of 2 cores / mm 2 or more can be achieved without using a multi-core connector for connecting 36 optical fibers at once. It can be realized.
  • the cable with a connector of the present disclosure may further include an outer cover that collectively covers the plurality of multi-core optical fibers.
  • the plurality of multi-core optical fibers include a first multi-core optical fiber and a second multi-core optical fiber, and the plurality of connectors are a first optical connector attached to one end of the first multi-core optical fiber and the second multi-core optical fiber. It may include a second optical connector attached to one end of the fiber. Even if the length of the first multi-core optical fiber from one end of the jacket to the first connector and the length of the second multi-core optical fiber from the one end of the jacket to the second connector are different from each other. good.
  • a plurality of connectors are not arranged at one place in the longitudinal direction of the cable with a connector. Therefore, it is possible to prevent the diameter of the optical fiber traction tool from increasing.
  • the cable with a connector of the present disclosure includes a tensile strength body embedded in the jacket, a tensile strength body covered with the sheath together with the plurality of multi-core optical fibers, the plurality of multi-core optical fibers, and the plurality of.
  • a traction tool including an accommodating portion for accommodating a connector, a traction portion provided at one end of the accommodating portion, and a tensile strength body gripping portion connected to the traction portion via a tension transmission member and gripping the tensile strength body. May be further provided. According to this aspect, the number of connectors can be reduced, and it is possible to prevent the diameter and length of the accommodating portion from being increased.
  • the outer diameter of the cable with a connector and the outer diameter of the outer cover grip portion can also be reduced. From the above, it is possible to realize a cable with a connector provided with an optical fiber traction tool in which the accommodating portion and the outer grip portion are miniaturized.
  • the maximum value ID MAX of the inner diameter of the accommodating portion and the total number N of cores in the cable with a connector are (ID MAX / 2) 2 ⁇ ⁇ / N ⁇ 0.25 [mm 2 ]. ] May be satisfied.
  • the number of connectors accommodated by the accommodating portion can be reduced, and the maximum value ID MAX of the inner diameter of the accommodating portion can be reduced. Further, the total number N of cores in the cable can be increased. From the above, this aspect can realize a cable with a connector equipped with a miniaturized optical fiber traction tool that satisfies the relationship of (ID MAX / 2) 2 ⁇ ⁇ / N ⁇ 0.25 [mm 2 ].
  • the maximum value of the inner diameter of the accommodating portion may be smaller than the outer diameter of the outer cover. According to this aspect, it is possible to realize a cable with a connector provided with an optical fiber traction tool having a miniaturized accommodating portion.
  • the cable with a connector satisfies the relationship that the length L of the accommodating portion in the longitudinal direction of the cable with the connector and the total number of cores N in the cable with the connector are L / N ⁇ 0.4 [mm]. May be good. According to this aspect, the number of connectors accommodated by the accommodating portion can be reduced, and the length L of the accommodating portion can be reduced. Further, the total number N of cores in the cable can be increased. From the above, this aspect can realize a cable with a connector provided with a miniaturized optical fiber traction tool that satisfies the relationship of L / N ⁇ 0.4 [mm].
  • the length L of the accommodating portion is three times or more longer than that when the multi-core optical fiber is used.
  • 144 or 36 optical fibers are collectively used as the connector of the cable with connector in order to reduce the number of connectors and reduce the length L of the accommodating portion. It is necessary to prepare an expensive connector such as a multi-core connector to be connected. However, these multi-core connectors are generally expensive, and it is difficult to guarantee the hole forming accuracy. According to this aspect, the relationship of L / N ⁇ 0.4 [mm] can be satisfied without using an expensive multi-core connector.
  • the accommodating portion may have a first accommodating portion and a second accommodating portion.
  • the first accommodating portion may accommodate the plurality of multi-core optical fibers in a bent state
  • the second accommodating portion may accommodate the plurality of multi-core optical fibers along the longitudinal direction of the cable with a connector.
  • the second accommodating portion may accommodate the plurality of connectors. According to this aspect, the extra length of the multi-core optical fiber can be adjusted in the first accommodating portion.
  • a plurality of connectors may be grouped together in a predetermined number to form at least one multiple connector.
  • the cable with a connector of this embodiment facilitates connection work with other connectors.
  • the number of connection operations can be reduced as compared with the case where each multi-core connector is connected to another connector.
  • the at least one multiple connector includes a first multiple connector and a second multiple connector, and the multi-core optical fiber from one end of the outer cover to the first multiple connector.
  • the length of the fiber and the length of the multi-core optical fiber from the one end of the outer cover to the second multiple connector may be different from each other.
  • a plurality of multiple connectors are not arranged at one place in the longitudinal direction of the cable with a connector. Therefore, it is possible to prevent the diameter of the optical fiber traction tool from increasing. (Effect of this disclosure)
  • FIG. 1A is a plan view of a cable with a connector 1A according to one embodiment of the present disclosure.
  • FIG. 1B is a plan view of the cable 1B with a connector according to one embodiment of the present disclosure.
  • the cable 1 with a connector includes a plurality of optical fiber core wires 10, a plurality of connectors 20, and an outer cover 30 that covers the plurality of optical fiber core wires 10.
  • the cable 1 with a connector may further include a tensile strength body 32 and a traction tool 40 attached to one end of the cable 1 with a connector.
  • the cable 1A with a connector is a slot type cable in which a plurality of optical fiber core wires 10 are mounted in a slot groove, and the tensile strength body 32 is covered with an outer cover 30 together with the optical fiber core wires 10.
  • the cable 1B with a connector is a slotless type cable in which a plurality of optical fiber core wires 10 are mounted at high density in the outer cover 30 by omitting a slot, and the tensile strength body 32 is embedded in the outer cover 30.
  • the outer diameter d of the outer cover 30 is, for example, 50 mm.
  • the plurality of optical fiber core wires 10 project from one end 31 of the outer cover 30 and are arranged along the longitudinal direction of the cable 1 with a connector.
  • Each optical fiber core has the same structure.
  • Each optical fiber core wire 10 is a so-called multi-optical core fiber having a plurality of cores.
  • FIG. 2 is a cross-sectional view showing a glass fiber portion of one optical fiber core wire 10.
  • the optical fiber core wire 10 has a circular shape in a radial cross-sectional view, and has a plurality of cores 12 and a clad 13 that collectively surrounds the plurality of cores 12.
  • the main components of the core 12 and the clad 13 in the optical fiber core wire 10 are quartz glass.
  • the refractive index of the clad 13 is lower than that of each core 12.
  • the optical fiber core wire 10 may be configured to prevent an optical signal from leaking from the core 12 when the optical fiber core wire 10 is bent.
  • the optical fiber core wire 10 may have a trench having a lower refractive index than the clad 13 between each core 12 and the clad 13.
  • the optical fiber core wire 10 of this example has four cores 12, but the number of cores 12 is not limited to four.
  • the optical fiber core wire 10 may have at least two cores 12, but preferably has four or more cores 12. More preferably, the number of cores 12 is 8, 12, or 16 cores 12.
  • the outer diameter of the optical fiber core wire 10 of this example is, for example, 125 ⁇ m, and the diameter of each core 12 is, for example, 8 ⁇ m.
  • the plurality of optical fiber core wires 10 may have the form of intermittently connected tape core wires.
  • the plurality of connectors 20 are connection terminals attached to each end 11 of the plurality of optical fiber core wires 10 in the longitudinal direction of the cable 1 with a connector, and connect the plurality of optical fiber core wires 10 to other terminals at once. It is a so-called multi-core connector (multi-fiber connector) configured as described above. That is, each connector 20 has a plurality of ferrules configured to hold a plurality of optical fiber core wires 10, and one end 11 of one optical fiber core wire 10 is held by one ferrule.
  • the plurality of connectors 20 include a first connector 20A, a second connector 20B, and a third connector 20C. The number of the plurality of connectors 20 is not limited.
  • a removable cap or an openable shutter may be provided at one end of each connector 20.
  • a cap or a retractable shutter is an example of a dustproof structure.
  • the cap or retractable shutter may be configured to prevent trauma to each connector 20.
  • the cap or the openable shutter may be provided at one end of all the connectors 20 or may be provided at one end of some of the connectors 20.
  • the length LA of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the first connector 20A and the length LB of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the second connector 20B are different from each other.
  • the length LC of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the third connector 20C is different from the length LA and also different from the length LB.
  • the plurality of connectors 20 are arranged apart by a certain distance in the longitudinal direction of the cable 1 with connectors so that they are not arranged in the same position in a concentrated manner.
  • the cable 1 with a connector of this example is configured so that the core number density in each connector 20 is 2 cores / mm 2 or more.
  • each optical fiber core 10 has four cores 12
  • each connector 20 has eight multi-core optical fibers
  • the connector ferrule has a cross-sectional area of 16 mm 2
  • the cross-sectional area of the connector ferrule is the maximum value of the cross-sectional area perpendicular to the optical fiber of the connector ferrule.
  • the traction tool 40 includes a tip portion (traction portion) 41 provided at one end of the traction tool 40 in the longitudinal direction of the cable 1 with a connector, an outer cover grip portion 42 provided at the other end of the traction tool 40, and a tip portion. It includes an accommodating portion 43 provided between the 41 and the outer cover grip portion 42, a tensile strength body grip portion 44, and a tension transmission member 45.
  • the tip portion 41 has a circular shape in a radial cross-sectional view, and is configured to be towed by a winder such as a winch at the tip of the tip portion 41.
  • the tip of the tip 41 may be provided with an annular portion or a hook that connects to the winder.
  • the outer diameter of the tip portion 41 is set according to the traction force of the winder.
  • the tip portion 41 is connected to the accommodating portion 43.
  • a waterproof tape or a dustproof tape may be provided between the tip portion 41 and the accommodating portion 43.
  • the outer cover grip portion 42 has a circular shape in a radial cross-sectional view, and is configured to grip the outer cover 30 of the cable 1 with a connector.
  • the outer cover grip portion 42 is connected to the accommodating portion 43.
  • a waterproof tape or a dustproof tape may be provided between the outer cover grip portion 42 and the outer cover 30 of the cable 1 with a connector, and between the outer cover grip portion 42 and the accommodating portion 43.
  • the tensile strength body grip portion 44 is bound to the traction portion 41 via the tension transmission member 45.
  • the tensile strength body gripping portion 44 grips the tensile strength body 32 exposed from the connector-attached cable 1 and transmits the tension from the traction portion 41 to the connector-attached cable 1.
  • the tensile strength body 32 may be gripped by the outer cover gripping portion 42, and the outer cover gripping portion 42 may function as the tensile strength body gripping portion 44.
  • the outer shell of the accommodating portion 43 functions as a tension transmission member.
  • the accommodating portion 43 has a circular shape in a radial cross-sectional view, and is configured to accommodate a plurality of optical fiber core wires 10 and a plurality of connectors 20 of the cable 1 with a connector.
  • the maximum value ID MAX of the inner diameter of the accommodating portion 43 is smaller than the outer diameter d of the outer cover 30.
  • the maximum value ID MAX of the inner diameter of the accommodating portion 43 is configured to satisfy the relationship of (ID MAX / 2) 2 ⁇ ⁇ / N ⁇ 0.25 [mm 2 ].
  • the length of the space of the accommodating portion 43 accommodating the plurality of optical fiber core wires 10 and the plurality of connectors 20 is L.
  • the length L of the accommodating portion 43 is configured to satisfy the relationship of L / N ⁇ 0.4 [mm].
  • a towing tool 40 is provided at one end of the cable 1 with a connector as shown in FIGS. 1A and 1B.
  • the tip 41 of the traction tool 40 is connected to a winder such as a winch.
  • the winder is driven and the traction force is transmitted to the tip portion 41.
  • the load capacity of the cable 1 with a connector with respect to the traction tension is preferably 1000 N or more. It is more preferable that the load capacity is 2000 N or more.
  • the traction force is transmitted to the tensile strength body 32 of the cable 1 with the connector gripped by the tensile strength body gripping portion 44 via the tension transmitting member 45 and the tensile strength body gripping portion 44.
  • the cable 1 with a connector including the traction tool 40 is towed in the duct.
  • FIG. 3 is a plan view of the cable 1 with a connector in a state where the traction tool 40 is removed. A part of the plurality of optical fiber core wires 10 and the plurality of connectors 20 are exposed. The exposed plurality of connectors 20 are connected to connectors of another cable. For example, the cable 1 with a connector is towed to the closure. After towing, the towing tool 40 is removed from one end of the cable 1 with a connector. A part of the exposed optical fiber core wire 10 and the plurality of connectors 20 may be connected to the connector of another cable in the closure. By repeating towing to the closure and connecting to another cable in this way, the cable can be laid over a long distance.
  • the cable 1 with connectors since the cable 1 with connectors includes an optical fiber core wire 10 which is a multi-core optical fiber, the number of connectors can be reduced as compared with the case where a single-core core fiber is provided.
  • the cable 1 with a connector does not need to include a large number of one connector corresponding to one core, and may include a large number of connectors 20 corresponding to the optical fiber core wire 10 having the plurality of cores 12. Since the number of connectors 20 accommodated in the accommodating portion 43 of the traction tool 40 is reduced, the traction tool 40 can be miniaturized. Therefore, it is possible to realize a cable 1 with a connector that can be towed by a small traction tool 40 without reducing the number of cores per cable.
  • each connector 20 Since the core number density in each connector 20 is 2 cores / mm 2 or more, it is possible to realize a cable 1 with a connector in which a plurality of optical fiber core wires 10 are mounted at high density. If the cable 1 with a connector includes a single-core optical fiber, in order to realize a core number density of 2 cores / mm 2 or more, the cable 1 with a connector must have a multi-core connector for connecting 36 optical fibers at once. You need to be prepared. However, a multi-core connector for connecting 36 optical fibers at once is generally expensive, and it is difficult to guarantee the molding accuracy of a hole for accommodating a ferrule. According to the present disclosure, it is possible to realize a core number density of 2 cores / mm 2 or more without using an expensive multi-core connector.
  • the plurality of connectors 20 are not centrally arranged in one place. Therefore, it is possible to prevent the diameter of the accommodating portion 43 of the traction tool 40 from increasing.
  • the accommodating portion 43 of the traction tool 40 accommodates a plurality of optical fiber core wires 10 which are multi-core optical fibers and a plurality of connectors 20 which are multi-core connectors.
  • the number of connectors 20 can be reduced, and the diameter and length of the accommodating portion 43 can be prevented from being increased.
  • each optical fiber core wire 10 is a multi-core optical fiber, the outer diameter d of the cable 1 with a connector and the outer diameter grip portion 42 can also be reduced in diameter. From the above, it is possible to realize a cable 1 with a connector including a small accommodating portion 43 and a jacket grip portion 42.
  • Each optical fiber core wire 10 is a multi-core optical fiber. Therefore, the number of connectors 20 accommodated by the accommodating portion 43 can be reduced, and the maximum value ID MAX of the inner diameter of the accommodating portion 43 can be reduced. Further, the total number N of cores in the cable can be increased. From the above, it is possible to realize a cable 1 with a connector equipped with a miniaturized optical fiber traction tool 40 that satisfies the relationship of (ID MAX / 2) 2 ⁇ ⁇ / N ⁇ 0.25 [mm 2 ].
  • the accommodating portion 43 of the traction tool 40 can be miniaturized.
  • Each optical fiber core wire 10 is a multi-core optical fiber. Therefore, the number of connectors 20 accommodated by the accommodating portion 43 can be reduced, and the length L of the accommodating portion 43 can be reduced. Further, the total number N of cores in the cable can be increased. From the above, it is possible to realize a cable 1 with a connector provided with a miniaturized optical fiber traction tool 40 that satisfies the relationship of L / N ⁇ 0.4 [mm]. If a single-core optical fiber is used for the cable 1 with a connector, the length L of the accommodating portion 43 is three times or more longer than that when a multi-core optical fiber is used. However, since the cable 1 with a connector satisfies the relationship of L / N ⁇ 0.4 [mm], the accommodating portion 43 of the traction tool 40 can be miniaturized.
  • each optical fiber core wire 10 of the cable with a connector of the present disclosure is a multi-core optical fiber, the relationship of L / N ⁇ 0.4 [mm] can be satisfied without using an expensive multi-core connector.
  • FIG. 4 shows a cable with a connector 1C provided with a multiple connector 50 as a modification 1 of the cable with a connector.
  • elements substantially the same as or corresponding to the configurations exemplified in FIGS. 1A and 1B are designated by the same reference numbers, and repeated description will be omitted.
  • the plurality of optical fiber core wires 10 are shown in a simplified manner.
  • the cable 1C with a connector includes at least one multi-connector 50 connected to a plurality of optical fiber core wires 10 and configured to collectively connect the plurality of connectors 20.
  • the cable 1C with a connector includes a plurality of multiple connectors 50.
  • the plurality of multiple connectors 50 include a first multiple connector 50A, a second multiple connector 50B, and a third multiple connector 50C. Each multiple connector 50 may be labeled so as to be distinguishable from the other multiple connectors 50.
  • the number of the plurality of multiple connectors 50 is not limited.
  • Each multiple connector 50 accommodates a plurality of connectors 20.
  • the first multiple connector 50A accommodates the first connector 20A, the second connector 20B, and the third connector 20C.
  • the length LD of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the first multiple connector 50A, and the length LE of the optical fiber core 10 from one end 31 of the outer cover 30 to the second multiple connector 50B. are different from each other.
  • the length LF of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the third multiple connector 50C is different from the length LD and also different from the length LE.
  • the plurality of multiple connectors 50 are arranged apart by a certain distance in the longitudinal direction of the cable 1C with connectors so that they are not arranged centrally at the same position.
  • FIG. 5 is a schematic view of the tip portion of the first multiple connector 50A when viewed from the tip portion 41 toward the outer cover grip portion 42.
  • the first connector 20A, the second connector 20B, and the third connector 20C are arranged in parallel in a horizontal row.
  • Each connector 20 includes a pair of guide pins 21. Between the pair of guide pins 21, each fiber optic core 10 is held by a corresponding ferrule.
  • each connector 20 is arranged horizontally so that a pair of guide pins 21 are arranged on one plane, but the arrangement of each connector 20 is not limited to the horizontally long one.
  • Each connector 20 may be arranged vertically so that the pair of guide pins 21 are stacked.
  • FIG. 6 is a schematic view of the tip portion of the first multiple connector 50A'which is a modified example when viewed from the tip portion 41 toward the outer cover grip portion 42.
  • the first multiple connector 50A' has a first connector 20A', a second connector 20B', a third connector 20C', a fourth connector 20D', a fifth connector 20E', and a sixth connector 20F'.
  • the seventh connector 20G', the eighth connector 20H', and the ninth connector 20I' are provided.
  • the first connector 20A', the second connector 20B', and the third connector 20C' are arranged in a vertical row.
  • the fourth connector 20D', the fifth connector 20E', and the sixth connector 20F' are arranged in a vertical row.
  • the seventh connector 20G', the eighth connector 20H', and the ninth connector 20I' are arranged in a vertical row.
  • the first connector 20A'to the ninth connector 20I' are housed in the first multiple connector 50A'in a state of being arranged in 3 rows and 3 columns.
  • the cable 1C with a connector includes at least one multi-connector 50, the connection work with other connectors becomes easy. If the cable 1C with a connector does not have a multiple connector, three connection operations are required to connect the multi-core connectors 20A, 20B, and 20C to other connectors, respectively. However, in the present disclosure, the multiple connector 50A You only need to connect to once. Therefore, the number of connection operations can be reduced.
  • the cable 1C with a connector includes a plurality of multiple connectors 50, the length LD of the optical fiber core wire 10 from one end 31 of the outer cover 30 to the first multiplex connector 50A, and the second multiple from one end 31 of the outer cover 30. Since the length LEs of the optical fiber core wires 10 up to the connector 50B are different from each other, a plurality of multiple connectors 50 are not arranged at one place in the accommodating portion 43 in the longitudinal direction of the cable 1C with a connector. Therefore, it is possible to prevent the traction tool 40 from increasing in diameter. Further, when each of the multiple connectors 50 is labeled, it becomes easy to identify each of the multiple connectors 50.
  • FIG. 7 shows a plan view of the cable with a connector 1D when the traction tool 40 has a plurality of accommodating portions as a modification 2 of the cable with a connector.
  • the same reference numbers are given to the elements substantially the same as or corresponding to the configurations exemplified in FIGS. 1A and 1B, and the repeated description will be omitted.
  • the plurality of optical fiber core wires 10 are shown in a simplified manner.
  • the accommodating portion 43 of the traction tool 40 has a first accommodating portion 43A and a second accommodating portion 43B.
  • the first accommodating portion 43A has a circular shape in a radial cross-sectional view, and is arranged between the outer cover grip portion 42 and the second accommodating portion 43B in the longitudinal direction of the cable with connector 1D.
  • the second accommodating portion 43B has a circular shape in a radial cross-sectional view, and is arranged between the first accommodating portion 43A and the tip portion 41 in the longitudinal direction of the cable with connector 1D.
  • Each optical fiber core wire 10 protruding from one end 31 of the outer cover 30 is accommodated in a bent state in the first accommodating portion 43A, and is accommodated in the second accommodating portion 43B along the longitudinal direction of the cable 1D with a connector. Will be done.
  • Each connector 20 is accommodated in the second accommodating portion 43B.
  • One end 43B1 of the second accommodating portion 43B faces the first accommodating portion 43A.
  • the length LG of the optical fiber core wire 10 from one end 43B1 of the second accommodating portion 43B to the first connector 20A, and the length LH of the optical fiber core wire 10 from one end 43B1 of the second accommodating portion 43B to the second connector 20B. are different from each other.
  • the length LI of the optical fiber core wire 10 from one end 43B1 of the second accommodating portion 43B to the third connector 20C is different from the length LG and also different from the length LH.
  • the plurality of connectors 20 are arranged apart by a certain distance in the longitudinal direction of the connector-attached cable 1D so that the plurality of connectors 20 are not arranged centrally at the same position.
  • the first accommodating portion 43A may not be removed and may be left in the vicinity of one end 31 of the outer cover 30. ..
  • each optical fiber core wire 10 is accommodated in a bent state in the first accommodating portion 43A in this way, the first accommodating portion 43A can tolerate the extra length of each optical fiber core wire 10. For example, even if the fiber coating removal or the cutting of the optical fiber core wire 10 fails when the cable 1 with a connector is connected to another cable, each optical fiber core wire 10 housed in the first accommodating portion 43A It can be supplemented by the fiber length of.
  • the core number density in the connector 20 was evaluated.
  • the sample No. of each optical fiber core wire 10 was changed. 1 to No. 4 was prepared.
  • Sample No. The number of cores 12 in 1 is four.
  • Sample No. The number of cores 12 in 2 is eight.
  • Sample No. The number of cores 12 of 3 is twelve.
  • Sample No. The number of cores 12 of 4 is 16.
  • sample No. Nine optical fiber core wires were prepared. Sample No. The number of cores of 9 is one, and the optical fiber core wire is a single core fiber.
  • a multi-core connector 20 having 8, 12, 24, and 36 ferrule holes was prepared.
  • the cross-sectional area of each connector 20 is 16 mm 2 .
  • Table 1 shows the evaluation results of the core number density in each connector 20 in each sample.
  • Sample No. 1 to No. The core number density in No. 4 was 2 cores / mm 2 or more.
  • sample No. The core number density in 9 was less than 2 cores / mm 2 when the number of holes in the ferrule was 8, 12, and 24.
  • sample No. When the number of holes in the ferrule is 36 in 9, the core number density is 2.3 cores / mm 2 .
  • a multi-core connector for connecting 36 optical fibers at once is generally expensive, and it is difficult to guarantee the hole forming accuracy.
  • the cable 1 with a connector including the optical fiber core wire 10 which is a multi-core optical fiber and the connector 20 which is a multi-core connector has a core number density of 2 cores / mm 2 or more without using an expensive multi-core connector. It can be realized.
  • sample No. 7 the number of cores per fiber core is 4, and the number of fiber cores is 216.
  • Sample No. In No. 6, the number of cores per fiber core is 12, and the number of fiber cores is 72.
  • sample No. 8 and No. I prepared 9.
  • Sample No. In No. 8, the number of cores per fiber core is one, and the number of fiber cores is 3456.
  • Sample No. In No. 9 the number of cores per fiber core is one, and the number of fiber cores is 864.
  • Sample No. 8 and sample No. Reference numeral 9 is a single core core fiber. Table 2 shows the evaluation results of (ID MAX / 2) 2 ⁇ ⁇ / N [mm 2 ] in each sample.
  • sample No. The cross-sectional area of the accommodating portion 43 per one core of No. 8 is 0.502 [mm 2 ], and the sample No. The cross-sectional area of the accommodating portion 43 per core of 9 is 0.568 [mm 2 ], and the sample No. 8 and sample No. It was confirmed that none of 9 satisfied (ID MAX / 2) 2 ⁇ ⁇ / N ⁇ 0.25 [mm].
  • sample No. The maximum value ID MAX of the inner diameter of the accommodating portion in No. 8 is the sample No. It is more than twice as large as the maximum value ID MAX of the inner diameter of the accommodating portion 43 in 1.
  • Sample No. The maximum value ID MAX of the inner diameter of the accommodating portion in No. 9 is the sample No. It is 1.5 times or more larger than the maximum value ID MAX of the inner diameter of the accommodating portion 43 in 7. From the above, the cable 1 with a connector (samples No. 1 to 3, No.
  • the total number N of cores in the cable 1 with a connector of 13 is 3456.
  • Sample No. In 14 the number of cores per fiber core is 4, and the number of fiber cores is 216.
  • Sample No. The total number N of cores in the cable 1 with a connector of 14 is 864.
  • Sample No. In 15, the number of cores per fiber core is 8 and the number of fiber cores is 108.
  • Sample No. The total number N of cores in the cable 1 with a connector of 15 is 864.
  • Sample No. In 16 the number of cores per fiber core is 12, and the number of fiber cores is 72.
  • Sample No. The total number N of cores in the cable 1 with a connector of 16 is 864.
  • sample No. 8 and No. I prepared 9.
  • Sample No. In No. 8 the number of cores per fiber core is one, and the number of fiber cores is 3456.
  • Sample No. The total number N of cores in the cable 1 with a connector of 8 is 3456.
  • Sample No. In No. 9 the number of cores per fiber core is one, and the number of fiber cores is 864.
  • Sample No. The total number N of cores in the cable 1 with a connector of 9 is 864.
  • Sample No. 8 and sample No. Reference numeral 9 is a single core core fiber.
  • sample No. 11-No. It was confirmed that all 16 satisfied L / N ⁇ 0.4 [mm].
  • sample No. The length of the accommodating portion 43 per one core of No. 8 is 0.43 [mm]
  • the sample No. The length of the accommodating portion 43 per core of 9 is 0.75 [mm]
  • the sample No. 8 and sample No. It was confirmed that none of 9 satisfied L / N ⁇ 0.4 [mm].
  • Sample No. 8 and sample No. This is because since the number 9 is a single-core core fiber, the number of connectors 20 accommodated by the accommodating portion 43 increases, and as a result, the length L of the accommodating portion 43 becomes long.
  • sample No. The length L of the accommodating portion 43 in No. 8 is the sample No.
  • sample No. 9 is the sample No. It is 3.6 times or more longer than the length L of the accommodating portion 43 in 14.
  • sample No. 8 and sample No. When the number of connectors 20 is reduced in 9 to reduce the length L of the accommodating portion 43, for example, assuming that the number of connectors 20 is 24, the sample No. In No. 8, a multi-core connector for connecting 144 optical fibers at once is referred to as a sample No. In 9, it is necessary to prepare an expensive connector such as a multi-core connector for connecting 36 optical fibers at once. However, these multi-core connectors are generally expensive, and it is difficult to guarantee the hole forming accuracy.
  • the cable 1 with a connector including the optical fiber core wire 10 which is a multi-core optical fiber and the connector 20 which is a multi-core connector can be L without using an expensive multi-core connector.
  • the relationship of / N ⁇ 0.4 [mm] can be satisfied.
  • 1, 1A, 1B, 1C, 1D Cable with connector 10: Optical fiber core wire (multi-core optical fiber) 11: One end 20, 20A, 20B, 20C: Connector 30: Outer cover 31: One end 32: Tensile body 40: Traction tool 41: Tip portion (traction portion) 42: Outer grip portion 43: Accommodating portion 43A: First accommodating portion 43B: Second accommodating portion 44: Tension body gripping portion 45: Tension transmission member 50, 50A, 50B, 50C: Multiple connectors

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
PCT/JP2021/048358 2020-12-25 2021-12-24 コネクタ付きケーブル Ceased WO2022138951A1 (ja)

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EP21911088.9A EP4206769A4 (en) 2020-12-25 2021-12-24 CABLE EQUIPPED WITH CONNECTOR
CN202180078410.6A CN116472479A (zh) 2020-12-25 2021-12-24 带连接器的线缆
JP2022571705A JP7845195B2 (ja) 2020-12-25 2021-12-24 コネクタ付きケーブル

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US12455424B2 (en) * 2022-06-29 2025-10-28 Corning Research & Development Corporation Fiber optic cable assembly with high packing density and method of making same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63182611A (ja) * 1987-01-23 1988-07-27 Fujikura Ltd コネクタの保持部
JPH09265032A (ja) * 1996-03-28 1997-10-07 Fujikura Ltd コネクタ付き光ファイバケーブル
JP2001004888A (ja) 1999-06-21 2001-01-12 Fujikura Ltd 光ケーブル牽引具
JP2001013365A (ja) * 1999-06-28 2001-01-19 Fujikura Ltd コネクタ用キャップおよび光ケーブル牽引具
JP2015052704A (ja) * 2013-09-06 2015-03-19 住友電気工業株式会社 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
WO2018008399A1 (ja) * 2016-07-04 2018-01-11 日本電信電話株式会社 光コネクタ
US20190004273A1 (en) * 2017-06-28 2019-01-03 Corning Research & Development Corporation High fiber count pre-terminated optical distribution assembly

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0772338A (ja) * 1993-09-02 1995-03-17 Nippon Telegr & Teleph Corp <Ntt> コネクタ付光ケーブル牽引端末部
JP3571783B2 (ja) * 1994-12-05 2004-09-29 古河電気工業株式会社 光ケーブルの端末構造とその形成方法
JP3558758B2 (ja) 1995-11-06 2004-08-25 株式会社フジクラ 光ファイバケーブルの牽引具
US5863083A (en) * 1996-11-20 1999-01-26 Siecor Corporation Pulling grip for pre-connectorized fiber optic cable
US7680388B2 (en) * 2004-11-03 2010-03-16 Adc Telecommunications, Inc. Methods for configuring and testing fiber drop terminals
JP4751212B2 (ja) * 2006-02-16 2011-08-17 住友電気工業株式会社 光ファイバ分岐ケーブル、その配線方法、及びその提供方法
JP5497544B2 (ja) 2010-06-09 2014-05-21 住友電気工業株式会社 コネクタ付集合光ケーブル
CN110268296A (zh) * 2017-01-25 2019-09-20 Afl电信有限责任公司 减小直径的加固光纤配电线缆
FI3677938T3 (fi) 2017-12-28 2023-10-09 Fujikura Ltd Optinen liitin ja menetelmä optisen liittimen kytkemi­seksi
DK3779543T3 (da) * 2018-04-09 2026-02-09 Sumitomo Electric Industries Flerkernet optisk fiber og flerkernet optisk fiberkabel
JP7636394B2 (ja) * 2020-04-02 2025-02-26 株式会社フジクラ 収容構造体、牽引端付き光ケーブル及び収容構造体の製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63182611A (ja) * 1987-01-23 1988-07-27 Fujikura Ltd コネクタの保持部
JPH09265032A (ja) * 1996-03-28 1997-10-07 Fujikura Ltd コネクタ付き光ファイバケーブル
JP2001004888A (ja) 1999-06-21 2001-01-12 Fujikura Ltd 光ケーブル牽引具
JP2001013365A (ja) * 1999-06-28 2001-01-19 Fujikura Ltd コネクタ用キャップおよび光ケーブル牽引具
JP2015052704A (ja) * 2013-09-06 2015-03-19 住友電気工業株式会社 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
WO2018008399A1 (ja) * 2016-07-04 2018-01-11 日本電信電話株式会社 光コネクタ
US20190004273A1 (en) * 2017-06-28 2019-01-03 Corning Research & Development Corporation High fiber count pre-terminated optical distribution assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4206769A4

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EP4206769A4 (en) 2024-04-10
US20250180827A1 (en) 2025-06-05
US20220206229A1 (en) 2022-06-30
JPWO2022138951A1 (https=) 2022-06-30

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