WO2022018783A1 - 光スイッチ - Google Patents

光スイッチ Download PDF

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Publication number
WO2022018783A1
WO2022018783A1 PCT/JP2020/028008 JP2020028008W WO2022018783A1 WO 2022018783 A1 WO2022018783 A1 WO 2022018783A1 JP 2020028008 W JP2020028008 W JP 2020028008W WO 2022018783 A1 WO2022018783 A1 WO 2022018783A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
optical fiber
core
optical switch
fiber
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/JP2020/028008
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
千里 深井
邦弘 戸毛
友裕 川野
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to PCT/JP2020/028008 priority Critical patent/WO2022018783A1/ja
Priority to JP2022538494A priority patent/JP7400981B2/ja
Publication of WO2022018783A1 publication Critical patent/WO2022018783A1/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
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • 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
    • G02B6/26—Optical coupling means
    • G02B6/35—Optical coupling means having switching means
    • 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

Definitions

  • the present invention mainly relates to an optical switch used for switching the path of an optical line using a single mode optical fiber in an optical fiber network.
  • a method of using a multi-core fiber as an optical path for switching has been proposed. For example, by combining a multi-core fiber with a three-dimensional MEMS optical switch (see, for example, Non-Patent Document 2), multiple paths can be switched collectively. It becomes possible. Further, by rotating the cylindrical ferrule into which the multi-core fiber is inserted to perform switching (see, for example, Patent Document 1), optical components such as a lens and a prism are not required, and the configuration can be simplified.
  • the optical switch according to the present disclosure has a multi-core optical fiber having a plurality of cores on the same circumference from the center in the fiber cross section, and the same circle as the circumference in which the plurality of cores of the multi-core optical fiber are arranged.
  • One of an optical coupling part consisting of an optical fiber having a core arranged on the circumference, two ferrules containing the two optical fibers, and a cylindrical sleeve into which the two ferrules are inserted in a hollow manner.
  • This is an optical switch that switches an optical path by a rotation mechanism in which the optical fiber of the optical fiber rotates in the axial direction, and a predetermined gap is provided between the outer diameter of the two ferrules and the inner diameter of the sleeve.
  • the optical switch according to the present disclosure may be a multi-core optical fiber in the two optical fibers constituting the optical coupling portion.
  • the optical coupling unit S13 uses the input side ferrule S16, the output side ferrule S17, and the sleeve S18 to prevent the axis deviation of the input side multi-core optical fiber S4 and the output side multi-core optical fiber S6.
  • the sleeve S18 controls the axial deviation of the input side ferrule S16 and the output side ferrule S17 within a certain allowable range, and in order not to interfere with the shaft rotation of the output side ferrule S17, the sleeve S18 of the input side ferrule S16 and the output side ferrule S17.
  • the inner diameter S20 is slightly larger than the outer diameter S19 by about sub ⁇ m, and a slight clearance S30 (predetermined gap) of about sub ⁇ m is provided.
  • about sub ⁇ m means 0.1 to 1 ⁇ m.
  • FIG. 7 illustrates the optical coupling portion S13 according to the present embodiment.
  • the optical switches S00 and S03 according to the present embodiment include a bearing S26 while rotating the axis of the optical coupling portion S13.
  • the input side ferrule S16 is attached to the input side flange S22 having a notch.
  • the input side flange 22 may be attached to the fixing jig S27 with a fixing screw S25 to fix the axial direction and the axial rotation of the input side ferrule S16.
  • the input side flange S22, the fixing screw S25, and the fixing jig S27 serve as the rotation stop mechanism S3 described above.
  • the output side ferrule S17 is attached to the output side flange S23.
  • the actuator S8 is a drive mechanism that rotates at an arbitrary angle step by a pulse signal from the control circuit S11 and has a constant static torque at each angle step.
  • a stepping motor is used.
  • the actuator S8 may be rotated in an arbitrary angle step by a pulse signal from the control circuit S11, and other methods may be used as long as the drive mechanism has a constant static torque for each angle step. ..
  • the rotation speed and the rotation angle are determined by the period of the pulse signal from the control circuit S11 and the number of pulses, and the angle step and the static torque may be adjusted via the reduction gear.
  • the output side ferrule S17 in the optical coupling portion S13 is designed to rotate freely, the static torque required to maintain the rotation angle of the output side ferrule S17 is applied by the actuator S8. It has the characteristic of being a thing.
  • the present invention provides an actuator by providing a mechanism for easily rotating only one of the input side multi-core optical fiber S4 or the output side multi-core optical fiber S6, and a gap S5 and a clearance S30 for eliminating loss due to rotation.
  • the energy required for S8, that is, the torque output can be reduced as much as possible, and the power consumption can be reduced.
  • the amount of optical axis deviation in the direction other than the axis rotation of the output side ferrule S17 is limited by the sleeve S18 in the optical coupling portion S13, stable optical characteristics are realized against external factors such as vibration. can.
  • an optical switch that has low power consumption and can realize stable optical characteristics against external factors by a mechanism that does not require a complicated assembly process.
  • FIG. 9 shows a combined form of the optical coupling portion S13 according to the present embodiment.
  • the optical switches S00 and S03 according to the present embodiment include a bearing S28 while rotating the axis of the optical coupling portion S13. Similar to the first embodiment, the input side ferrule S16 is attached to the input side flange S22 having a notch, and the input side flange 22 is attached to the fixing jig S27 by the fixing screw S25.
  • the output side ferrule S17 has a smaller outer diameter than the input side ferrule S16.
  • the optical coupling portion S13 according to the present embodiment is provided with a bearing S28 between the inner diameter of the sleeve S18 and the outer diameter of the output side ferrule S17.
  • zirconia is used for the bearing S28, for example, other materials can be used as long as it can be manufactured with high dimensional accuracy.
  • S00 Front-stage optical switch S01: Input-side optical fiber S02: Optical switch-to-optical fiber S03: Rear-stage optical switch S04: Output-side optical fiber S1: Input-side single-core optical fiber S2: Fan-in S3: Rotation stop mechanism S4: Multiple Multi-core optical fiber having a core or bundled optical fiber obtained by melt-stretching a plurality of single-core optical fibers S5: Gap S6: Multi-core optical fiber having a plurality of cores or a bundled optical fiber obtained by melting and stretching a plurality of single-core optical fibers S7: Free Rotation mechanism S8: Actuator S9: Fan out S10: Output side single core optical fiber S11: Control circuit S12: Extra length part S13: Optical coupling part S14: Core arrangement radius S15: Optical fiber clad diameter S16: Input side ferrule S17: Output Side ferrule S18: Sleeve S19: Ferrule outer diameter S20: Sleeve inner diameter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
PCT/JP2020/028008 2020-07-20 2020-07-20 光スイッチ Ceased WO2022018783A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2020/028008 WO2022018783A1 (ja) 2020-07-20 2020-07-20 光スイッチ
JP2022538494A JP7400981B2 (ja) 2020-07-20 2020-07-20 光スイッチ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2020/028008 WO2022018783A1 (ja) 2020-07-20 2020-07-20 光スイッチ

Publications (1)

Publication Number Publication Date
WO2022018783A1 true WO2022018783A1 (ja) 2022-01-27

Family

ID=79728566

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/028008 Ceased WO2022018783A1 (ja) 2020-07-20 2020-07-20 光スイッチ

Country Status (2)

Country Link
JP (1) JP7400981B2 (enExample)
WO (1) WO2022018783A1 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024142152A1 (ja) * 2022-12-26 2024-07-04 日本電信電話株式会社 光伝送路及び接続方法
WO2025022649A1 (ja) * 2023-07-27 2025-01-30 日本電信電話株式会社 光結合部及び光スイッチ
WO2025192280A1 (ja) * 2024-03-12 2025-09-18 住友電気工業株式会社 光接続構造、および光接続構造の製造方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62240917A (ja) * 1986-04-11 1987-10-21 Nippon Telegr & Teleph Corp <Ntt> 光フアイバ切替方式
JPH0213919A (ja) * 1988-05-06 1990-01-18 Adc Telecommun Inc 光ファイバ用スイッチ
JPH0282212A (ja) * 1988-09-20 1990-03-22 Fujitsu Ltd 光スイッチ
US5463704A (en) * 1994-05-16 1995-10-31 Adc Telecommunications, Inc. Fiber optic switch
US20030202737A1 (en) * 2002-04-25 2003-10-30 Mingbao Zhou Optical switch
WO2014034532A1 (ja) * 2012-08-31 2014-03-06 オリンパスメディカルシステムズ株式会社 挿入本体、挿入装置、回転ユニット、回転力伝達ユニット
JP2019101152A (ja) * 2017-11-30 2019-06-24 日本電信電話株式会社 光ファイバ接続構造

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6360032B1 (en) 2000-02-18 2002-03-19 John G. Berger Two beam optical switch and attenuator and method of use
JP2018006474A (ja) 2016-06-29 2018-01-11 日本電信電話株式会社 光ファイバ通信システム

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62240917A (ja) * 1986-04-11 1987-10-21 Nippon Telegr & Teleph Corp <Ntt> 光フアイバ切替方式
JPH0213919A (ja) * 1988-05-06 1990-01-18 Adc Telecommun Inc 光ファイバ用スイッチ
JPH0282212A (ja) * 1988-09-20 1990-03-22 Fujitsu Ltd 光スイッチ
US5463704A (en) * 1994-05-16 1995-10-31 Adc Telecommunications, Inc. Fiber optic switch
US20030202737A1 (en) * 2002-04-25 2003-10-30 Mingbao Zhou Optical switch
WO2014034532A1 (ja) * 2012-08-31 2014-03-06 オリンパスメディカルシステムズ株式会社 挿入本体、挿入装置、回転ユニット、回転力伝達ユニット
JP2019101152A (ja) * 2017-11-30 2019-06-24 日本電信電話株式会社 光ファイバ接続構造

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024142152A1 (ja) * 2022-12-26 2024-07-04 日本電信電話株式会社 光伝送路及び接続方法
WO2025022649A1 (ja) * 2023-07-27 2025-01-30 日本電信電話株式会社 光結合部及び光スイッチ
WO2025192280A1 (ja) * 2024-03-12 2025-09-18 住友電気工業株式会社 光接続構造、および光接続構造の製造方法

Also Published As

Publication number Publication date
JPWO2022018783A1 (enExample) 2022-01-27
JP7400981B2 (ja) 2023-12-19

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