WO2023234355A1 - 光ファイバリボン - Google Patents

光ファイバリボン Download PDF

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Publication number
WO2023234355A1
WO2023234355A1 PCT/JP2023/020298 JP2023020298W WO2023234355A1 WO 2023234355 A1 WO2023234355 A1 WO 2023234355A1 JP 2023020298 W JP2023020298 W JP 2023020298W WO 2023234355 A1 WO2023234355 A1 WO 2023234355A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
core
cores
fiber ribbon
optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/020298
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English (en)
French (fr)
Japanese (ja)
Inventor
文昭 佐藤
雄紀 下田
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 JP2024524913A priority Critical patent/JPWO2023234355A1/ja
Priority to EP23816112.9A priority patent/EP4535056A4/en
Priority to CN202380043396.5A priority patent/CN119213341A/zh
Publication of WO2023234355A1 publication Critical patent/WO2023234355A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4403—Optical cables with ribbon structure
    • 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
    • G02B6/02295—Microstructured optical fibre
    • G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
    • G02B6/02319—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by core or core-cladding interface features
    • G02B6/02323—Core having lower refractive index than cladding, e.g. photonic band gap guiding
    • G02B6/02328—Hollow or gas filled core

Definitions

  • Patent Document 1 states that the skew between signal lights propagating through each of a plurality of cores is 1 ps/m or less, and the difference in propagation constant between two adjacent cores among the plurality of cores is greater than 0.
  • a multi-core optical fiber is disclosed.
  • the optical fiber ribbon of the present disclosure is an optical fiber ribbon comprising a plurality of optical fiber cores including a core and a cladding, wherein the core is formed of pure quartz or is formed as a hollow core, and the plurality of optical fibers are The optical fibers are arranged in parallel and the adjacent optical fibers are connected to each other, and the difference between the maximum value and the minimum value of the light propagation time in the plurality of optical fibers is determined as This is 0.1% or less of the average propagation time.
  • FIG. 1 is a diagram illustrating an example of an optical fiber ribbon according to an embodiment of the present disclosure.
  • FIG. 2 is a diagram showing the configuration of the optical fiber shown in FIG. 1.
  • FIG. 3 is a diagram illustrating an example of a modification of the optical fiber ribbon according to the embodiment of the present disclosure.
  • FIG. 4 is a diagram showing an example of an optical cable using the optical fiber ribbon shown in FIG. 3.
  • FIG. 5 is a diagram illustrating an example of a modification of the optical fiber core according to the embodiment of the present disclosure.
  • FIG. 6 is a diagram illustrating an example of another modification of the optical fiber core according to the embodiment of the present disclosure.
  • FIG. 7 is a diagram illustrating an example of another modification of the optical fiber core according to the embodiment of the present disclosure.
  • FIG. 8 is a diagram showing an outline of a measurement system used to measure the difference in propagation time of light between optical fibers.
  • FIG. 9 is a diagram showing a list of measurement targets and measurement results measured using the measurement system shown in FIG
  • An object of the present disclosure is to provide an optical fiber ribbon that can further reduce the skew between cores and increase the propagation speed of light in the cores.
  • the optical fiber ribbon according to the embodiment of the present disclosure includes: (1) An optical fiber ribbon comprising a plurality of optical fiber cores including a core and a cladding, The core is formed of pure quartz or formed as a hollow core, The plurality of optical fibers are arranged in parallel and adjacent optical fibers are connected to each other, A difference between a maximum value and a minimum value of light propagation times in the plurality of optical fibers is 0.1% or less of an average value of light propagation times in the optical fibers.
  • the difference in length between the plurality of optical fibers included in the optical fiber ribbon can be reduced. Furthermore, by making the cores pure quartz or hollow, the difference in relative refractive index between each core can be made small (almost zero). Therefore, skew between cores can be further reduced. Furthermore, by forming the core from pure quartz or as a hollow core, the core does not contain impurities, so that the propagation speed of light can be increased. Therefore, the skew between the cores can be further reduced, and the propagation speed of light in the cores can be increased.
  • the difference may be 0.05% or less of the average value.
  • the plurality of optical fibers adjacent to each other may be intermittently coupled.
  • the flexibility of the optical fiber ribbon can be increased and it can be rolled or bundled, making it possible to realize an optical fiber ribbon that is easy to wire.
  • Each of the optical fibers may include a plurality of the cores.
  • the core lengths are the same, so the difference in core line length can be reduced (almost to zero) and the transmission amount can be increased.
  • the optical fiber has an outer diameter of 200 ⁇ m or less,
  • the outer diameter of the cladding in each optical fiber may be 100 ⁇ m or less.
  • FIG. 1 is a diagram illustrating an example of an optical fiber ribbon according to an embodiment of the present disclosure.
  • an optical fiber ribbon 1 according to an embodiment of the present disclosure includes a plurality of optical fiber coated wires 10 and a connecting member 20 that connects the plurality of optical fiber coated wires 10.
  • the optical fiber ribbon 1 includes twelve optical fiber cores 10.
  • the connecting member 20 covers the entirety of the twelve optical fibers 10 so that adjacent optical fibers 10 arranged in parallel are connected to each other.
  • Each optical fiber core 10 is, for example, a single core fiber (SCF), and includes one core 11, a clad 12 covering the core 11, and a coating layer 14 covering the clad 12.
  • the core 11 has a refractive index higher than that of the cladding 12 and can guide light.
  • the coating layer 14 includes, for example, two ultraviolet curable resin layers and a colored layer.
  • the core 11 is made of pure quartz.
  • the 12 cores 11 and cladding 12 in the optical fiber ribbon 1 are formed using the same preform. Thereby, the difference in refractive index between these 12 optical fiber core wires 10 can be reduced, and the skew, which is the difference in light propagation speed, can be reduced.
  • tension control controlling the tension so that it becomes equal to the set value.
  • FIG. 2 is a diagram showing the configuration of the optical fiber core 10 shown in FIG. 1.
  • the outer diameter D1 of the cladding 12 is, for example, 100 ⁇ m or less.
  • the cladding diameter the glass diameter of the optical fiber core
  • the outer diameter D2 of the optical fiber coated wire 10 is, for example, 200 ⁇ m or less. With such a configuration, it is possible to realize high density of the optical fiber core wire 10.
  • optical fiber ribbon 1 is not limited to a configuration including 12 optical fibers 10, but may include 24 optical fibers 10, or may include 4 optical fibers 10. You may prepare.
  • the connecting member 20 is not limited to a configuration that covers the entire twelve optical fiber coated wires 10 as shown in FIG. It may be.
  • FIG. 3 is a diagram illustrating an example of a modification of the optical fiber ribbon according to the embodiment of the present disclosure.
  • the direction in which the optical fibers 10 extend is the Y direction
  • the direction in which the plurality of optical fibers 10 are lined up is the X direction.
  • optical fiber ribbon according to the embodiment of the present disclosure is not limited to the configuration shown in FIG. 1.
  • adjacent optical fibers in the optical fiber ribbon may be intermittently coupled.
  • the optical fiber cores 10 adjacent to each other are connected, for example, partially in the Y direction, instead of the connecting member 20 shown in FIG. They are coupled by a plurality of coupling members 13 provided intermittently.
  • FIG. 4 is a diagram showing an example of an optical cable using the optical fiber ribbon 2 shown in FIG. 3.
  • the optical cable 100 includes, for example, two optical fiber ribbons 2 including 12 optical fiber cores 10, a cable jacket 3 covering these two optical fiber ribbons 2, and aramid fibers.
  • a plurality of tensile strength bodies 15 are assembled.
  • the flexibility of the optical fiber ribbon 2 can be increased by the configuration in which the optical fiber cores 10 adjacent to each other are intermittently coupled, and as shown in FIG. Since the transmission loss does not deteriorate even when the fibers are rolled or bundled in cross-sectional view, it is possible to form the optical cable 100 that is housed in high density.
  • the plurality of optical fibers 10 adjacent to each other are not limited to a configuration in which each optical fiber is intermittently coupled, and for example, the coupling member 13 is connected between some of the optical fibers. It may also be provided throughout the Y direction shown in FIG. Further, the optical cable 100 may be configured without the tensile strength member 15.
  • the optical fiber according to the embodiment of the present disclosure is not limited to the SCF as shown in FIG. 2.
  • 5 and 6 are diagrams illustrating an example of a modification of the optical fiber according to the embodiment of the present disclosure.
  • the optical fibers 30 and 40 may have a configuration including a plurality of cores 11, that is, a multi-core fiber (MCF).
  • MCF multi-core fiber
  • the optical fiber core 30 may have a configuration including four cores 11 inside the cladding 12, as shown in FIG.
  • the optical fiber core 40 may have a configuration including twelve cores 11 inside the cladding 12, as shown in FIG.
  • the optical fibers 30 and 40 are MCF, the lengths of the cores 11 in the same optical fibers 30 and 40 are the same, so the difference in core wire length can be reduced to almost zero. ), and the amount of transmission can be increased.
  • cores can be mounted even more densely.
  • FIG. 7 is a diagram illustrating an example of another modification of the optical fiber core according to the embodiment of the present disclosure.
  • the core 11 in the optical fiber core 50 may be formed as a hollow core instead of being made of pure quartz.
  • FIG. 7 shows, as an example, a PBGF (Photonic Band Gap Fiber) in which holes 16 are regularly arranged around a core 11 that is a hollow core.
  • PBGF Photonic Band Gap Fiber
  • FIG. 8 is a diagram showing an overview of the measurement system used in this measurement.
  • the optical fiber ribbon or optical fiber used in the measurement will also be referred to as a "measurement target.”
  • one end of the object to be measured was connected to a light source that emits light with a wavelength of 1550 nm through an FC connector, and the other end of the object to be measured was connected to a light receiver through the FC connector. Additionally, the light source was connected to a modulator and the receiver was connected to a vector voltmeter. The modulator is electrically connected to the vector voltmeter and sends out a reference signal.
  • FIG. 9 is a diagram showing a list of measurement targets and measurement results of this measurement.
  • ITU-T G. 652. D G657.
  • Measurement objects 1 to 5 which are measurement objects that meet the A1 standard, were used.
  • Measurement objects 1 to 5 each include 12 optical fibers, and the core included in each optical fiber is made of pure quartz.
  • Measurement object 1 and measurement object 2 are optical fibers according to the comparative example, and measurement object 3 to measurement object 5 are included in the optical fiber ribbon of the present disclosure.
  • the measurement object 1 is an optical fiber made by twisting together 12 optical fiber core wires, which are SCFs.
  • the plurality of cores and claddings (hereinafter referred to as glass fibers) in the measurement object 1 are not sorted when they are formed from a preform. That is, at least two of the plurality of glass fibers are formed using different preforms.
  • the difference between the maximum and minimum values of the light propagation times in the 12 optical fibers is 0.23% of the average value of the light propagation times in these 12 optical fibers. there were.
  • the measurement object 2 is an optical fiber made by twisting together 12 optical fiber cores, which are SCFs. Moreover, unlike the measurement object 1, the plurality of glass fibers in the measurement object 2 are sorted when they are formed from a preform. That is, these plurality of glass fibers are formed using the same preform. In measurement object 2, the difference between the maximum and minimum values of the light propagation times in the 12 optical fibers was 0.15% of the average value of the light propagation times in the optical fibers.
  • the measurement object 3 is an optical fiber ribbon in which 12 optical fibers, which are SCFs, are connected in parallel as shown in FIG. A plurality of optical fibers adjacent to each other are intermittently coupled as shown in FIG. Furthermore, the plurality of glass fibers in the measurement object 3 are sorted when they are formed from a preform. Note that when the 12 coated optical fibers in the measurement object 3 are formed into an optical fiber ribbon, tension control is not performed so that the tension of the plurality of coated optical fibers becomes equal. In measurement object 3, the difference between the maximum and minimum values of the light propagation times in the 12 optical fibers was 0.10% of the average value of the light propagation times in the optical fibers.
  • measurement object 3 which has an optical fiber ribbon configuration including 12 optical fibers, has a smaller skew between these optical fibers. It was confirmed that it is possible to further reduce the
  • the measurement object 4 is an optical fiber ribbon in which 12 optical fiber cores, which are SCFs, are connected in parallel. A plurality of optical fibers adjacent to each other are intermittently coupled. Further, the plurality of glass fibers in the measurement target 4 are sorted when they are formed from a preform. Furthermore, unlike the measurement object 3, the 12 optical fibers in the measurement object 4 are tension-controlled when they are formed into an optical fiber ribbon. In measurement object 4, the difference between the maximum and minimum values of the light propagation times in the 12 optical fibers was 0.05% of the average value of the light propagation times in the optical fibers.
  • the measurement object 5 is an optical fiber ribbon in which 12 optical fiber cores, which are MCFs including four cores, are connected in parallel. A plurality of optical fibers adjacent to each other are intermittently coupled. Furthermore, the plurality of glass fibers in the measurement object 5 are sorted when they are formed from a preform. Furthermore, the tension of the 12 optical fibers in the measurement object 5 is controlled when they are formed into an optical fiber ribbon. In measurement object 5, the difference between the maximum and minimum values of the light propagation times in the multiple cores included in the 12 optical fibers is 0.04% of the average value of the light propagation times in these multiple cores. Met.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
PCT/JP2023/020298 2022-05-31 2023-05-31 光ファイバリボン Ceased WO2023234355A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2024524913A JPWO2023234355A1 (https=) 2022-05-31 2023-05-31
EP23816112.9A EP4535056A4 (en) 2022-05-31 2023-05-31 FIBER OPTIC RIBBON
CN202380043396.5A CN119213341A (zh) 2022-05-31 2023-05-31 光纤带

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2022-088640 2022-05-31
JP2022088640 2022-05-31

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WO2023234355A1 true WO2023234355A1 (ja) 2023-12-07

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PCT/JP2023/020298 Ceased WO2023234355A1 (ja) 2022-05-31 2023-05-31 光ファイバリボン

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EP (1) EP4535056A4 (https=)
JP (1) JPWO2023234355A1 (https=)
CN (1) CN119213341A (https=)
WO (1) WO2023234355A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025033318A1 (ja) * 2023-08-07 2025-02-13 株式会社フジクラ 光ファイバケーブル
US12529858B1 (en) 2024-07-19 2026-01-20 Corning Research & Development Corporation Stranded optical fiber cable
US12541069B2 (en) 2024-07-19 2026-02-03 Corning Research & Development Corporation Optical fiber cable

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02226211A (ja) * 1989-02-28 1990-09-07 Nec Corp 多芯フラット光ファイバ
JPH09113740A (ja) * 1995-10-03 1997-05-02 Siecor Corp 低スキュー光ファイバーリボン
US6317541B1 (en) * 1998-01-13 2001-11-13 Sun Microsystems, Inc. Low thermal skew fiber optic cable
JP2002189154A (ja) * 2000-12-20 2002-07-05 Fujikura Ltd 光ファイバテープ心線
JP2007279226A (ja) * 2006-04-04 2007-10-25 Fujikura Ltd 光ファイバテープ心線及び前記光ファイバテープ心線を収納した光ファイバケーブル
JP2010224478A (ja) * 2009-03-25 2010-10-07 Hitachi Cable Ltd テープ状光ファイバ
JP2011522288A (ja) * 2008-05-30 2011-07-28 コーニング インコーポレイテッド フォトニックバンドギャップ光ファイバを用いるファイバ集合体
JP2013228548A (ja) 2012-04-25 2013-11-07 Sumitomo Electric Ind Ltd マルチコア光ファイバ
JP2016191730A (ja) * 2015-03-30 2016-11-10 株式会社フジクラ マルチコア光ファイバ、及び、マルチコア光ファイバの製造方法
JP2022088640A (ja) 2016-04-12 2022-06-14 スリーエム イノベイティブ プロパティズ カンパニー 折り畳み可能な多目的不織布ハンドパッド及び使用方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3608309A1 (de) * 1986-03-13 1987-09-17 Kabelmetal Electro Gmbh Bandleitung mit lichtwellenleitern
JPH08171034A (ja) * 1994-12-16 1996-07-02 Hitachi Cable Ltd 光ケーブル

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02226211A (ja) * 1989-02-28 1990-09-07 Nec Corp 多芯フラット光ファイバ
JPH09113740A (ja) * 1995-10-03 1997-05-02 Siecor Corp 低スキュー光ファイバーリボン
US6317541B1 (en) * 1998-01-13 2001-11-13 Sun Microsystems, Inc. Low thermal skew fiber optic cable
JP2002189154A (ja) * 2000-12-20 2002-07-05 Fujikura Ltd 光ファイバテープ心線
JP2007279226A (ja) * 2006-04-04 2007-10-25 Fujikura Ltd 光ファイバテープ心線及び前記光ファイバテープ心線を収納した光ファイバケーブル
JP2011522288A (ja) * 2008-05-30 2011-07-28 コーニング インコーポレイテッド フォトニックバンドギャップ光ファイバを用いるファイバ集合体
JP2010224478A (ja) * 2009-03-25 2010-10-07 Hitachi Cable Ltd テープ状光ファイバ
JP2013228548A (ja) 2012-04-25 2013-11-07 Sumitomo Electric Ind Ltd マルチコア光ファイバ
JP2016191730A (ja) * 2015-03-30 2016-11-10 株式会社フジクラ マルチコア光ファイバ、及び、マルチコア光ファイバの製造方法
JP2022088640A (ja) 2016-04-12 2022-06-14 スリーエム イノベイティブ プロパティズ カンパニー 折り畳み可能な多目的不織布ハンドパッド及び使用方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4535056A4

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025033318A1 (ja) * 2023-08-07 2025-02-13 株式会社フジクラ 光ファイバケーブル
US12529858B1 (en) 2024-07-19 2026-01-20 Corning Research & Development Corporation Stranded optical fiber cable
US12541069B2 (en) 2024-07-19 2026-02-03 Corning Research & Development Corporation Optical fiber cable

Also Published As

Publication number Publication date
EP4535056A4 (en) 2025-09-03
EP4535056A1 (en) 2025-04-09
JPWO2023234355A1 (https=) 2023-12-07
CN119213341A (zh) 2024-12-27

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