WO2002095468A1 - Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant - Google Patents

Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant Download PDF

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Publication number
WO2002095468A1
WO2002095468A1 PCT/JP2001/004348 JP0104348W WO02095468A1 WO 2002095468 A1 WO2002095468 A1 WO 2002095468A1 JP 0104348 W JP0104348 W JP 0104348W WO 02095468 A1 WO02095468 A1 WO 02095468A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical fiber
ferrule
fiber array
substrate
cylindrical member
Prior art date
Application number
PCT/JP2001/004348
Other languages
English (en)
Japanese (ja)
Inventor
Akira Matsumoto
Masashi Fukuyama
Akiyoshi Ide
Original Assignee
Ngk Insulators, 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 Ngk Insulators, Ltd. filed Critical Ngk Insulators, Ltd.
Priority to PCT/JP2001/004348 priority Critical patent/WO2002095468A1/fr
Publication of WO2002095468A1 publication Critical patent/WO2002095468A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/36—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
    • G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • G02B6/3878—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules comprising a plurality of ferrules, branching and break-out 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
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3632—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means
    • G02B6/3636—Mechanical coupling means for mounting fibres to supporting carriers characterised by the cross-sectional shape of the mechanical coupling means the mechanical coupling means being grooves
    • 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
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3648—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures
    • G02B6/3652—Supporting carriers of a microbench type, i.e. with micromachined additional mechanical structures the additional structures being prepositioning mounting areas, allowing only movement in one dimension, e.g. grooves, trenches or vias in the microbench surface, i.e. self aligning supporting carriers
    • 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
    • G02B6/3628—Mechanical coupling means for mounting fibres to supporting carriers
    • G02B6/3664—2D cross sectional arrangements of the fibres
    • G02B6/3676—Stacked arrangement
    • 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
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3838—Means for centering or aligning the light guide within the ferrule using grooves for light guides
    • G02B6/3839—Means for centering or aligning the light guide within the ferrule using grooves for light guides for a plurality of light guides

Definitions

  • optical fiber connection products such as an optical fiber array ferrule and an optical connector are used for coupling between a waveguide and an optical fiber and between optical fibers.
  • the ferrule for an optical fiber array is provided with a substrate having one or more high-precision, for example, V-shaped grooves, and aligns and fixes optical fibers in the V-shaped grooves.
  • a substrate having one or more high-precision, for example, V-shaped grooves, and aligns and fixes optical fibers in the V-shaped grooves.
  • a material of such a substrate for example, ceramic, glass, or glass ceramic is used, and a highly accurate pattern of V-shaped grooves is formed by grinding or glass pressing technology.
  • an optical fiber 101 is placed on a substrate 102 having a plurality of V-shaped grooves 102a on one surface thereof. Align the books one by one, and then use the lid substrate 103 A ferrule 100 for an optical fiber array in which an optical fiber 101 is bonded and fixed on a substrate 102 has been proposed.
  • Such a ferrule for an optical fiber array not only takes a long time to assemble as a product, but also may cause a problem that the optical fiber comes into contact with the substrate and breaks during alignment of the optical fiber, and the reliability is reduced. However, it was not always satisfactory.
  • a ferrule for introducing an optical fiber is prepared in advance and an optical fiber is inserted therein, thereby shortening a product assembling time.
  • a plurality of substrates each having a V-shaped groove on one surface are hierarchically assembled to form a ferrule having a space formed by the groove of one substrate and the plane of the other substrate.
  • the optical fiber In order to ensure the alignment accuracy of the optical fiber, the optical fiber must be inserted into the space with almost no clearance, depending on the handling during insertion of the optical fiber.
  • an optical fiber 101 is conventionally provided with a plurality of V-shaped grooves 1 on one surface.
  • a plurality of optical fibers 101 are one-dimensionally adhered and fixed on the substrate 102 by the lid substrate 103, and are arranged one by one on the substrate 102 having 0a.
  • an optical fiber array 100 in which these are laminated has been proposed.
  • the present invention has been made in view of the above-described problems, and has a highly reliable ferrule for an optical fiber array that can efficiently align and fix a plurality of optical fibers without breaking. And an optical fiber array using the same. Disclosure of the invention
  • the present inventor has found that, instead of directly aligning optical fibers on a substrate having a groove, the optical fibers are indirectly aligned and fixed using a cylindrical member. As a result, it has been found that the above object can be achieved, and the present invention has been completed.
  • the present invention provides the following ferrule for optical fiber array and optical fiber array.
  • a ferrule for an optical fiber array for aligning and fixing one or more optical fibers, wherein the at least one cylindrical member having a through hole capable of penetrating and storing the optical fiber;
  • a substrate having the cylindrical member aligned on at least one groove formed on one surface corresponding to an outer shape of the cylindrical member, and pressing the cylindrical member aligned on the substrate toward the substrate
  • a ferrule for an optical fiber array comprising: a fixing member fixed by fixing.
  • the substrate has, on both surfaces thereof, grooves having substantially the same shape and installation interval corresponding to the outer shape of the cylindrical member, which can align the cylindrical member.
  • a plurality of substrates having grooves of substantially the same shape and installation interval on both surfaces are arranged hierarchically so that the grooves face each other, and the cylinder is provided between the plurality of substrates.
  • the through-hole of the cylindrical member has a taper portion that widens toward an opening on a side where the optical fiber is to be inserted.
  • the ferrule for an optical fiber array according to any one of [1] to [5].
  • a ferrule for an optical fiber array which is capable of efficiently aligning and fixing a plurality of optical fibers without breaking, and which is excellent in reliability and an optical fiber array using the same. I can do it.
  • FIG. 1 (a) shows an embodiment of a ferrule for an optical fiber array according to the present invention in which cylindrical members are one-dimensionally aligned and optical fibers are accommodated in through holes of the cylindrical member. It is sectional drawing which shows typically.
  • FIG. 1 (b) is a cross-sectional view taken along line XX of FIG. 1 (a).
  • FIG. 2 is a cross-sectional view schematically showing that the ferrule for an optical fiber array of the present invention fully demonstrates its function when a polarization maintaining optical fiber is used as the optical fiber. .
  • FIG. 3 is a schematic view of another embodiment of the ferrule for an optical fiber array of the present invention in which cylindrical members are one-dimensionally aligned and optical fibers are accommodated in through holes of the cylindrical member.
  • FIG. 4 is a schematic view of an embodiment of the ferrule for an optical fiber array according to the present invention, in which cylindrical members are two-dimensionally aligned and optical fibers are accommodated in winning holes of the cylindrical member. It is sectional drawing shown in FIG.
  • FIG. 5 schematically shows another embodiment of the ferrule for an optical fiber array of the present invention in which cylindrical members are two-dimensionally aligned and optical fibers are accommodated in through holes of the cylindrical member.
  • FIG. 6 schematically shows another embodiment of the ferrule for an optical fiber array of the present invention in which cylindrical members are two-dimensionally aligned and optical fibers are accommodated in through holes of the cylindrical member.
  • FIG. 7 is a perspective view schematically showing an example of a conventional ferrule for an optical fiber array.
  • FIG. 8 is a perspective view schematically showing another example of a conventional ferrule for an optical fiber array.
  • an optical fiber array ferrule 10 of the present invention is an optical fiber array ferrule 10 for aligning and fixing one or more optical fibers 1a.
  • the substrate 3 with the cylindrical member 2 aligned on one or more grooves 3a corresponding to the outer shape of the cylindrical member 2 and the cylindrical member 2 aligned on the substrate 3 are placed on the substrate 3 side.
  • a fixing member 4 pressed and fixed.
  • the ferrule 10 for an optical fiber array of the present invention has an optical fiber 1a in which the through-hole 2a of the cylindrical member 2 has the outer coating 1b removed.
  • the fact that the tapered portion 2b has a tapered portion 2b that expands toward the opening on the side to be inserted for storage is required to allow the optical fiber 1a to pass through the through hole 2a of the cylindrical member 2 This is preferable in that the insertion can be performed smoothly.
  • the opening side end 2c of the tapered portion 2b is rougher than the corresponding substrate end 3b and the corresponding fixing member end 4a. Considering the length of the optical fiber, it is necessary to protrude outward by 1 m or more in order to effectively prevent disconnection of the optical fiber due to contact with the end 3b of the substrate and the end 4a of the fixing member. Is preferred.
  • the protrusion is preferably 5 mm or less.
  • optical fibers are usually made of quartz, if they are damaged on the outer surface, they tend to break due to stress concentration. Since the ferrule for an optical fiber array of the present invention is aligned and fixed while being housed in the cylindrical member 2, it is effective for the outer surface of the core to be damaged by contact with a substrate or the like and break. And the reliability as a ferrule for an optical fiber array can be improved. In addition, the work of aligning and fixing the optical fiber is simple without the necessity of complicated handling, the work time can be shortened, and the productivity can be improved. Due to shortening, the chance of breakage due to contact with a substrate or the like can be reduced, and reliability can be improved.
  • the ferrule for an optical fiber array of the present invention can fully exhibit its function. That is, as shown in FIG. 2, since the polarization maintaining optical fiber 1c is inserted into the through hole 2a of the cylindrical member 2, the adhesive layer 5 around the fiber 1c becomes substantially uniform, and Since the stress attributable to the adhesive layer 5 to the wave holding optical fiber 1c is substantially the same, no extra stress is generated, and the ability to maintain the polarization does not deteriorate.
  • reference numeral 6 denotes a stress applying portion
  • reference numeral 7 denotes a core.
  • the material of the cylindrical member 2 used in the present invention can be processed with high precision and is sufficient to prevent the optical fiber 1a housed in the through hole 2a from being damaged by contact with the outside.
  • the material is not particularly limited as long as it is a suitable material, but when it is fixed to the base material 3 described below using an ultraviolet-curable adhesive, a material that is light-transmissive is preferable.
  • borosilicate glass is a preferred example.
  • the outer diameter of the cylindrical member 2 varies depending on the thickness of the optical fiber 1a, etc., the optimum value cannot be uniquely determined, but usually the outer diameter is ⁇ 0.25 to 2.7 mmm. And those having an inner diameter of ⁇ .126 to 0.13 mm.
  • the inner diameter of the through hole 2a is preferably ⁇ 0.126 to 0.13 mm, and is set slightly larger than the outer diameter of the optical fiber 1a to facilitate insertion. Is preferred.
  • the substrate used in the present invention has one or more grooves 3a corresponding to the outer shape of the cylindrical member 2, which can smoothly align the above-mentioned cylindrical member 2 and securely fix it.
  • the cylindrical member 2 for example, one made of borosilicate glass can be mentioned as a preferred example.
  • the shape of the groove 3a allows the cylindrical member 2 to be smoothly aligned and securely fixed according to the outer shape of the cylindrical member 2.
  • the cylindrical member 2 There is no particular limitation as long as it can be supported, but it is preferably a V-shaped groove capable of securely supporting the cylindrical member 2 at three points.
  • the installation intervals of the grooves 3a may be arranged so as to provide a constant interval between the cylindrical members 2 as shown in FIG. 1 (a), and as shown in FIG.
  • the cylindrical members 2 may be densely arranged so as to contact each other.
  • the fixing member 4 used in the present invention is not particularly limited as long as it can press the cylindrical member 2 aligned on the substrate 3 toward the substrate 3 and securely fix it.
  • one made of borosilicate glass can be mentioned as a preferred example.
  • a ferrule cylindrical member and a fixing member are temporarily fixed with an adhesive in a groove formed in the substrate, and this is set as a ferrule.
  • An optical fiber array is introduced by inserting an optical fiber into the cylindrical member, and finally fixing the substrate, the cylindrical member, and the fixing member by adhesive with an adhesive.
  • the ferrule 10 for an optical fiber array of the present invention is a two-dimensionally aligned cylindrical member 2 containing an optical fiber 1a on a plurality of base materials 3 stacked in a hierarchy. It may be of a configuration having a configuration.
  • the substrate 3 has substantially the same shape corresponding to the outer shape of the cylindrical member 2 on both surfaces of which the cylindrical member 2 can be aligned. It may have a groove 3a having a shape and an installation interval.
  • FIG. 5 two substrates 3 are arranged hierarchically so that respective grooves 3a face each other, and a cylindrical member 2 is sandwiched and aligned between these two substrates 3. Then, on the substrate 3 further above, another cylindrical member 2 is placed.
  • the ferrule 10 for an optical fiber array which is aligned and fixed, is shown.
  • the ferrule 10 for an optical fiber array having such a configuration can utilize the fact that the grooves 3a formed on both sides of the substrate 3 can be processed with high definition with substantially the same shape and installation interval.
  • the upper and lower cylindrical members 2 that are two-dimensionally and hierarchically arranged thereon are opposed to and adjacent to each other.
  • the distance between the centers of the cylindrical members 2 can be accurately set, and the positional relationship of the cylindrical members 2 can be higher than that shown in FIG. -FIG. 6 shows a case where the cylindrical member 2 is aligned and fixed on the substrate 3 below in addition to the case shown in FIG. In this way, the distance between the centers of the cylindrical members 2 facing each other and the centers of the adjacent cylindrical members 2 arranged hierarchically in three rows can be accurately set.
  • the ferrule for an optical fiber array of the present invention is suitably used for coupling between a waveguide and an optical fiber and between optical fibers in various optical devices.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

La présente invention se rapporte à une férule pour réseau de fibres optiques (10) conçue pour aligner et fixer au moins une fibre optique, qui se caractérise en ce qu'elle comprend au moins un élément cylindrique (2) doté d'un trou traversant (2a) permettant le passage d'une fibre optique (1a) qui s'y trouve ainsi logée, un substrat (3) ayant des éléments cylindriques (2) alignés sur au moins une rainure (3a) formée dans au moins une surface dudit substrat et se conformant aux formes externes des éléments (2), et un élément de fixation (4) conçu pour comprimer et fixer contre le substrat (3) les éléments (2) qui sont alignés sur ledit substrat (3).
PCT/JP2001/004348 2001-05-24 2001-05-24 Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant WO2002095468A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/004348 WO2002095468A1 (fr) 2001-05-24 2001-05-24 Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2001/004348 WO2002095468A1 (fr) 2001-05-24 2001-05-24 Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant

Publications (1)

Publication Number Publication Date
WO2002095468A1 true WO2002095468A1 (fr) 2002-11-28

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PCT/JP2001/004348 WO2002095468A1 (fr) 2001-05-24 2001-05-24 Ferule pour reseau de fibres optiques et reseau de fibres optiques correspondant

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111239912A (zh) * 2020-03-17 2020-06-05 中山市美速光电技术有限公司 一种2xn准直器阵列及其制作方法
CN116009143A (zh) * 2023-03-22 2023-04-25 武汉驿路通科技股份有限公司 一种高精度高效耦合的fa制作方法及fa

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864018A (en) * 1973-10-18 1975-02-04 Bell Telephone Labor Inc Method and means for splicing arrays of optical fibers
JPS59202422A (ja) * 1983-05-02 1984-11-16 Nec Corp 光フアイバコネクタ
JPH1138270A (ja) * 1997-07-24 1999-02-12 Nippon Telegr & Teleph Corp <Ntt> 光導波路ユニット
JPH11264920A (ja) * 1998-03-18 1999-09-28 Fujitsu Ltd 光伝送モジュール

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864018A (en) * 1973-10-18 1975-02-04 Bell Telephone Labor Inc Method and means for splicing arrays of optical fibers
JPS59202422A (ja) * 1983-05-02 1984-11-16 Nec Corp 光フアイバコネクタ
JPH1138270A (ja) * 1997-07-24 1999-02-12 Nippon Telegr & Teleph Corp <Ntt> 光導波路ユニット
JPH11264920A (ja) * 1998-03-18 1999-09-28 Fujitsu Ltd 光伝送モジュール

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
1998 IEMT/IMC Symposium Proceedings (1998), Mitsuo USUI et al., "An optical Coupling Technique for Parallel Optical Interconnection Modules using Polymeric Optical Waveguides Films", pages 127 to 132, XP002942241 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111239912A (zh) * 2020-03-17 2020-06-05 中山市美速光电技术有限公司 一种2xn准直器阵列及其制作方法
CN111239912B (zh) * 2020-03-17 2024-05-28 中山市美速光电技术有限公司 一种2xn准直器阵列及其制作方法
CN116009143A (zh) * 2023-03-22 2023-04-25 武汉驿路通科技股份有限公司 一种高精度高效耦合的fa制作方法及fa

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