[go: up one dir, main page]

WO2019004147A1 - Câble à fibre optique - Google Patents

Câble à fibre optique Download PDF

Info

Publication number
WO2019004147A1
WO2019004147A1 PCT/JP2018/024056 JP2018024056W WO2019004147A1 WO 2019004147 A1 WO2019004147 A1 WO 2019004147A1 JP 2018024056 W JP2018024056 W JP 2018024056W WO 2019004147 A1 WO2019004147 A1 WO 2019004147A1
Authority
WO
WIPO (PCT)
Prior art keywords
cable
optical fiber
core
tension member
tape
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/JP2018/024056
Other languages
English (en)
Japanese (ja)
Inventor
江川　晋爾
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
Publication of WO2019004147A1 publication Critical patent/WO2019004147A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

Definitions

  • the present invention relates to optical fiber cables.
  • Patent Document 1 discloses a structure of a slotless type optical fiber cable in which a tension member is embedded in a cable sheath (also referred to as a sheath) and a notch for tearing the cable sheath is provided.
  • the slotless type optical fiber cable has an advantage of being easily densified because there is no slot like a slot type optical fiber cable.
  • the optical fiber cable according to the present disclosure comprises an optical unit comprising a plurality of optical fiber cores or a tape core line in which the optical fiber cores are arranged, a cable core in which the optical unit is housed, and It is a slotless type optical fiber cable provided with the provided cable jacket, wherein the optical unit is composed of a plurality of subunits in which the optical fiber core wire or the tape core wire is twisted together.
  • a tensioning member is provided only in the sub unit, and no tensioning member is provided in the cable sheath.
  • FIG. 1 is a view showing an example of an optical fiber cable according to a first embodiment of the present invention.
  • FIG. 2A is a view showing an example of the structure of an intermittent tape core, showing a state in which the intermittent tape core is opened in the arrangement direction.
  • FIG. 2B is a cross-sectional view taken along line BB in FIG. 2A.
  • FIG. 3 is a view showing an example of an optical fiber cable according to a second embodiment of the present invention.
  • An optical fiber cable comprises: (1) an optical unit comprising a plurality of optical fiber cores or a tape core formed by arranging the optical fibers; a cable core in which the optical unit is accommodated; A slotless type optical fiber cable comprising a cable jacket provided around the cable core, wherein the optical unit comprises a plurality of the optical fiber cores or a plurality of the tape cores twisted together. It comprises a sub unit, and a tension member is provided only in the sub unit, and the tension member is not provided other than the sub unit in the cable jacket. Due to the slotless structure, high density mounting is possible compared to conventional slotted optical fiber cables.
  • the tension members are not provided in the cable jacket but are provided dispersed only in the individual sub-units in the cable core, there is no directivity of bending and it is possible to obtain a conventional slotless type optical fiber cable In comparison, it is possible to provide an optical fiber cable that can be easily installed in a conduit. Furthermore, since the tension member is not embedded in the cable jacket as in the conventional slotless optical fiber, the thickness of the cable jacket can be reduced by that amount, and the diameter of the cable can be reduced. .
  • the tension member is disposed at the center position of the sub unit. Such a structure is easy to manufacture because the optical fibers or the tape may be twisted around the tension member. (3) The subunits are twisted together to form the optical unit, and the subunits provided with the tension members are disposed near the center position of the optical unit, and the tension members are not provided around the subunits. Sub unit is arranged. Also in this case, since the tension members are concentratedly arranged near the center of the optical unit, ie, the cable core, it is possible to provide an optical fiber cable which has no directivity of bending and which can be easily installed in a pipeline. Also, the flexibility of the optical fiber cable can be improved as compared to the case where tension members are provided in all the subunits.
  • FIG. 1 is a view showing an example of an optical fiber cable according to a first embodiment of the present invention
  • FIGS. 2A and 2B are views showing an example of the structure of an intermittent tape core.
  • the optical fiber cable 10 shown in FIG. 1 is a slotless type optical fiber cable, and has, for example, a round cable core 11 and a cable jacket 12 formed around the cable core 11.
  • the cable core 11 accommodates a plurality of subunits in which, for example, a plurality of 12 intermittent tape filaments 20 are twisted.
  • Intermittent tape cores are formed by arranging a plurality of optical fiber cores in a parallel line and intermittently connecting a part or all of the adjacent optical fiber cores by a connecting part and a non-connecting part. It is. 2A shows a state in which the intermittent tape core is opened in the arrangement direction, and FIG. 2B shows a cross-sectional view taken along the line B-B in FIG. 2A. The line is configured to be intermittently connected every two cores.
  • a tape coating 24 made of an ultraviolet curable resin or the like is provided around each of the optical fiber cores 21.
  • core wires obtained by integrating two cores are connected by connecting portions 22 and non-connecting portions 23. It is connected intermittently.
  • the tape coating 24 is connected in the connecting portion 22, and the adjacent tape coverings 24 are separated without being connected in the non-connecting portion 23.
  • the intermittent tape core wire may not be provided with a connection part and a non-connection part every two cores, for example, may be intermittently connected with a connection part and a non-connection part every one core.
  • the optical fiber core 21 accommodated in the intermittent tape core is, for example, a glass fiber with a standard outer diameter of 125 ⁇ m and a coating with a coating outer diameter of about 250 ⁇ m.
  • the colored coating is applied, it is not limited thereto, and the outer diameter of the coating may be in the range of 135 ⁇ m to 220 ⁇ m, for example, a small diameter fiber of about 165 ⁇ m or 200 ⁇ m. The use of small diameter fibers makes high density mounting easier.
  • the subunit 33 shown in FIG. 1 is formed, for example, by collecting a plurality of 12 intermittent tape cores 20, spirally twisting them, and bundling them with a bundle material 34 for identification.
  • the cable core 11 accommodates the optical unit 30 formed by collecting a plurality of subunits 33 and twisting them in a spiral, for example.
  • the twisting of the intermittent tape core 20 and the subunits 33 may be SZ-like, which is periodically reversed, in addition to spiral in one direction.
  • the intermittent tape cable 20 is more flexible than a general tape cable, if the optical unit 30 is configured of the intermittent tape cable, it is difficult for side pressure to be applied to the optical fiber cable, and thus the optical fiber The occupancy rate of the core wire 21 can be increased.
  • the cable core 11 also accommodates a tension member 31 in the sub unit 33.
  • the tension members 31 shown in FIG. 1 are disposed, for example, at central positions of the subunits 33 one by one along the longitudinal direction of the subunits 33.
  • the sub-unit 33 of the present embodiment is formed by twisting the intermittent tape core wire 20 around the tension member 31. Therefore, a bundle material for preventing the intermittent tape core wire 20 from being separated may be omitted.
  • a steel wire or a non-metallic material for example, a glass fiber reinforced plastic (GFRP) formed of glass fiber or a twisted yarn is used as a wire having a resistance against tension and compression.
  • GFRP glass fiber reinforced plastic
  • the tension member 31 is formed of GFRP or a twisted yarn, weight reduction of the cable can be achieved as compared with the case where a metal tension member is provided.
  • the water absorption powder may be applied to the tension member 31 in order to stop water in the cable core 11.
  • the cable core 11 is put together in a round shape by vertically pressing or laterally winding the optical unit 30 with a winding tape 32.
  • the holding and winding tape 32 is, for example, a non-woven fabric containing polyethylene terephthalate (PET) or the like, and is wound from the outside of the light unit 30.
  • PET polyethylene terephthalate
  • the press-winding tape may be omitted, but if the press-winding tape is provided, the cable core can be easily rounded.
  • the outer side of the holding and winding tape 32 is covered with a cable jacket 12 made of, for example, PE (polyethylene), PVC (polyvinyl chloride) or the like.
  • a cable jacket 12 made of, for example, PE (polyethylene), PVC (polyvinyl chloride) or the like.
  • the water absorbent powder may be applied to the holding and winding tape 32.
  • a tear-off string for tearing the cable jacket 12 in the longitudinal direction of the cable may be embedded at the time of extrusion molding of the cable jacket 12.
  • the optical fiber cable according to the first embodiment since it has a slotless type structure, high density mounting is possible.
  • the tension members 31 are not provided in the cable sheath but are dispersedly provided only in the individual sub-units 33 in the cable core, there is no directivity of bending and the conventional slotless type optical fiber It is possible to provide an optical fiber cable that can be easily installed in a conduit compared to a cable. Further, since the tension member 31 is provided in the sub unit 33 and the tension member is not embedded in the cable jacket as in the conventional slotless type optical fiber, the thickness of the cable jacket is increased by that amount. This can be eliminated, and the diameter of the cable can be reduced.
  • the intermittent tape core wire 20 may be twisted and disposed around the tension member 31, such a structure is easy to manufacture.
  • FIG. 3 is a view showing an example of an optical fiber cable according to a second embodiment of the present invention.
  • the optical fiber cable 10A shown in FIG. 3 is also a slotless type optical fiber cable, and has, for example, a round cable core 11, and as in the example shown in FIG.
  • a plurality of subunits 33 in which a plurality of wires 20 are twisted together is collected, and an optical unit 30 formed by twisting the subunits 33 in a spiral shape is accommodated.
  • one tension member 31 is disposed at a central position of the subunit 33 along the longitudinal direction of the subunit 33, as shown in FIG. 3, the subunit 33 having the tension member 31 is provided. Is disposed only in the vicinity of the central position of the cable core 11, and a subunit 33 not provided with a tension member is disposed around it.
  • the optical fiber cable according to the second embodiment has a slotless structure as in the first embodiment and enables high-density mounting. Further, the sub-unit 33 provided with the tension member 31 is disposed only at the central position of the cable core 11. Also in this case, the tension members are concentratedly disposed near the center of the optical unit, ie, the cable core. It is possible to provide an optical fiber cable which is easy to install in a conduit without bending directionality. Furthermore, the flexibility of the optical fiber cable can be improved as compared to the case where the tension members 31 are provided in all the subunits 33.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Communication Cables (AREA)

Abstract

L'invention concerne un câble à fibre optique sans fente comprenant : une unité optique comprenant une pluralité de fils de cœur de fibre optique ou un fil de cœur de bande dans lequel les fils de cœur de fibre optique sont disposés côte à côte ; un cœur de câble dans lequel l'unité optique est logée ; et une gaine de câble qui est disposée de façon à entourer le cœur de câble. L'unité optique est configurée à partir d'une pluralité de sous-unités dans lesquelles une pluralité de fils de cœur de fibre optique ou les fils de cœur de bande sont torsadés ensemble, des éléments de tension sont disposés uniquement à l'intérieur des sous-unités, et aucun élément de tension n'est prévu autre que dans les sous-unités à l'intérieur de la gaine de câble.
PCT/JP2018/024056 2017-06-26 2018-06-25 Câble à fibre optique Ceased WO2019004147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-124483 2017-06-26
JP2017124483 2017-06-26

Publications (1)

Publication Number Publication Date
WO2019004147A1 true WO2019004147A1 (fr) 2019-01-03

Family

ID=64740663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/024056 Ceased WO2019004147A1 (fr) 2017-06-26 2018-06-25 Câble à fibre optique

Country Status (1)

Country Link
WO (1) WO2019004147A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024121943A1 (fr) * 2022-12-06 2024-06-13 日本電信電話株式会社 Câble à fibre optique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50105845U (fr) * 1974-02-08 1975-08-30
JPS57182705U (fr) * 1981-05-18 1982-11-19
WO2012177476A1 (fr) * 2011-06-22 2012-12-27 Corning Cable Systems Llc Ensembles de ramification de câble en fibres optiques à fibres multiples contenant des fibres optiques restreintes dans une sous-unité de fibres optiques
WO2016188576A1 (fr) * 2015-05-28 2016-12-01 Prysmian S.P.A. Câble optique pour réseaux terrestres

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50105845U (fr) * 1974-02-08 1975-08-30
JPS57182705U (fr) * 1981-05-18 1982-11-19
WO2012177476A1 (fr) * 2011-06-22 2012-12-27 Corning Cable Systems Llc Ensembles de ramification de câble en fibres optiques à fibres multiples contenant des fibres optiques restreintes dans une sous-unité de fibres optiques
WO2016188576A1 (fr) * 2015-05-28 2016-12-01 Prysmian S.P.A. Câble optique pour réseaux terrestres

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024121943A1 (fr) * 2022-12-06 2024-06-13 日本電信電話株式会社 Câble à fibre optique
JPWO2024121943A1 (fr) * 2022-12-06 2024-06-13

Similar Documents

Publication Publication Date Title
US11029477B2 (en) Optical fiber cable
WO2017131117A1 (fr) Câble à fibres optiques
US11194108B2 (en) Slot-type optical cable
US10914906B2 (en) Optical fiber cable
US11892700B2 (en) Optical fiber unit and optical fiber cable
TW200907449A (en) Optical element assembly cable
JP6459833B2 (ja) 光ファイバケーブル
JP6542648B2 (ja) 光ファイバケーブル
WO2019004147A1 (fr) Câble à fibre optique
JP5546412B2 (ja) 光ケーブル
JP2016133607A (ja) 光ファイバテープ心線、光ファイバケーブル
JP2010271515A (ja) スロット型光ケーブル
WO2023079932A1 (fr) Câble à fibres optiques et procédé de pose de câble à fibres optiques
JP2014228821A (ja) 光ファイバケーブル
JP2005091616A (ja) 光ファイバケーブルおよびその製造方法
JP4059825B2 (ja) 光ドロップケーブル
JP4388006B2 (ja) 光ケーブル
JP3166245U (ja) 光ファイバケーブル
HK40019866A (en) Slot-type optical cable
JP4047248B2 (ja) 光ドロップケーブル
JP2017032938A (ja) 光ファイバテープ心線および光ファイバケーブル
JP2004061963A (ja) 光ファイバケーブルおよびその製造方法
JP2011232374A (ja) 多心光ファイバケーブル
JP2005077704A (ja) 光ドロップケーブル
JP2004078032A (ja) 光ファイバケーブルおよびその製造方法

Legal Events

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

Ref document number: 18823832

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18823832

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: JP