JPS6163804A - Production of multicore optical connector and ferrule - Google Patents

Production of multicore optical connector and ferrule

Info

Publication number
JPS6163804A
JPS6163804A JP18613684A JP18613684A JPS6163804A JP S6163804 A JPS6163804 A JP S6163804A JP 18613684 A JP18613684 A JP 18613684A JP 18613684 A JP18613684 A JP 18613684A JP S6163804 A JPS6163804 A JP S6163804A
Authority
JP
Japan
Prior art keywords
ferrule
optical connector
core
ferrules
optical 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.)
Pending
Application number
JP18613684A
Other languages
Japanese (ja)
Inventor
Toshiaki Kakii
俊昭 柿井
Koichiro Matsuno
松野　幸一郎
Shuzo Suzuki
鈴木　修三
Fumihiro Ashitani
芦谷　文博
Hiroshi Ishihara
石原　浩志
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.)
Nippon Telegraph and Telephone Corp
Sumitomo Electric Industries Ltd
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp, Sumitomo Electric Industries Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP18613684A priority Critical patent/JPS6163804A/en
Priority to AU46985/85A priority patent/AU572342B2/en
Priority to CA000489918A priority patent/CA1270682A/en
Priority to DE8585111146T priority patent/DE3582102D1/en
Priority to US06/788,404 priority patent/US4708433A/en
Priority to EP85111146A priority patent/EP0174013B1/en
Publication of JPS6163804A publication Critical patent/JPS6163804A/en
Priority to AU12500/88A priority patent/AU586946B2/en
Pending legal-status Critical Current

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
    • G02B6/389—Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • 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
    • 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
    • G02B6/3865—Details of mounting fibres in ferrules; Assembly methods; Manufacture fabricated by using moulding techniques
    • 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
    • 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
    • G02B6/3875—Floatingly supported sleeves
    • 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
    • G02B6/3877—Split sleeves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Coupling Of Light Guides (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

PURPOSE:To obtain a highly accurate multicore optical connector reduced at its transmission loss by using a ferrule obtained by inserting an optical fiber core into a metallic pipe to be the coupling part of the ferrule, collectively molding them with resin and then dividing a molded unit. CONSTITUTION:A 5-core tape-like core 2, e.g., is set up in a stainless metal pipe 11, set-up units are set up in a metal mold 12 and epoxy resin 13 or the like is injected to mold them collectively. The mold is cut off at a core welding 16 part on its center part and the cut surfaces are ground to obtain a pair of ferrules. The coupling parts 8 of the pair of ferrules 6 are inserted into a sleave 7 and both collar parts 9 are supported by a fixing housing member 10 so as to be pressed. Thus, highly accurate joint can be attained and an optical connector and ferrules which are reduced at the transmission loss and cost are obtained.

Description

【発明の詳細な説明】 ［技術分野］ 本発明は高精度結合が要求される／ングルモードファイ
バ及び多心光ファイバの光コネクタに関するものである
。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical connector for single-mode fibers and multi-core optical fibers that require high-precision coupling.

〔従来技術の問題点コ　　　・ 第７図に従来の基本的なンングルモードファイバ用光コ
ネクタの７工ルール部分を示す。筒伏のフェルール３に
はっは部９を備え、フェルール３の中心軸線に、光ファ
イバ・Ｃ：′線１およびその被覆を一部除去した光ファ
イバガラス部２をそれぞれを対応して挿入できる孔部を
イ「シ、前記光ファ、イバ心線１を挿入して固着し、フ
ェルール３の先端より突出する光ファイバガラス部２を
研磨して一方のｔＸ合端端面形成し、このように、光フ
ァイバ心線１を固着した一対のフェルール３を例えば、
フェルール３の外径と同一内径を有するスリーブ□ 両端より挿入し、前記両フェルール３の接合面を合せれ
ば、光コネクタが構成される。[Problems with the prior art] Figure 7 shows the 7-work rule of a basic conventional optical connector for single-mode fibers. The ferrule 3 of the sleeve is provided with a gap part 9, and the optical fiber C:' wire 1 and the optical fiber glass part 2 whose coating is partially removed can be inserted into the central axis of the ferrule 3 in a corresponding manner. Open the hole, insert and secure the optical fiber 1, and polish the optical fiber glass part 2 protruding from the tip of the ferrule 3 to form one tX mating end face. For example, a pair of ferrules 3 to which an optical fiber core 1 is fixed are
A sleeve □ having the same inner diameter as the outer diameter of the ferrule 3 is inserted from both ends and the joining surfaces of both ferrules 3 are brought together to form an optical connector.

このような構成をとる場合、フェイレール３の外径、例
えば２．５＋＋ｍφに対して前記孔部の偏心を極力小さ
なものにして製造する必要があり、このためには極めて
コストの高いものになる。When such a configuration is adopted, the eccentricity of the hole needs to be made as small as possible with respect to the outer diameter of the failrail 3, for example, 2.5++ mφ, which results in an extremely high cost. .

第８図は多心光コネクタのフェルール部分の基本構成を
示す。４は多心フェルールを示し、５はピン用ガイド孔
を示している。第７図において説明したフェルールに準
じ、フェルール４に光ファイバ心線１および一部被覆を
除去した複数の各光□ ファイバガラス部２を挿入する、太径部に続く、細径部
を仔する段付挿入孔に設け、これに前記多心の光ファイ
バ心線ｌを挿入して固着し、例えば直線上に配列された
細径孔よ□り各光ファイバガラス部２の先端を突出させ
、前起突出した端面を研磨して、このように多心の光フ
ァイバ心線を固着した一対のフェルール４の端面を合せ
、予めフェルール４に、光ファイバ心線１の配置方向と
同方向に設けた複数のビン用ガイド孔５にピンを通して
、対向する両フェルールの位置決めを行い、固定用ハウ
ジングにより締付けして光コネクタを構成している。FIG. 8 shows the basic configuration of a ferrule portion of a multi-core optical connector. 4 indicates a multi-core ferrule, and 5 indicates a pin guide hole. In accordance with the ferrule explained in FIG. 7, a thin diameter section following the large diameter section is inserted into the ferrule 4, into which the optical fiber core 1 and a plurality of optical fibers □ fiber glass sections 2 with partially removed coatings are inserted. Provided in a stepped insertion hole, the multi-core optical fiber core 1 is inserted and fixed into the stepped insertion hole, and the tip of each optical fiber glass portion 2 is made to protrude, for example, from the narrow diameter hole arranged in a straight line, The end faces of the pair of ferrules 4 to which the multi-core optical fibers are fixed are aligned by polishing the protruding end faces, and the ferrules 4 are provided in advance in the same direction as the arrangement direction of the optical fibers 1. The two opposing ferrules are positioned by passing pins through the plurality of bottle guide holes 5, and then tightened by a fixing housing to form an optical connector.

なお、本発明で破口を除去した光ファイバとは。Furthermore, what is the optical fiber from which the cracks have been removed in the present invention?

一般には、採光ファイバを意味するが、本発明で被覆を
除去するという意味は、光ファイバの位置決め上の不安
定要因となる被覆は除去するという・ご味であり、例え
ば採光ファイバ表面層に１〜ＩＯμｍと薄膜でコーティ
ングされていたり、仮に２００μｍのコーティング層で
も十分にそれが裸光ファイバと密告しており、位置決め
」二、問題がなければ、その部分の被覆は除去しなくて
もよいことはいうまでもない。Generally speaking, this refers to a lighting fiber, but in the present invention, removing the coating means removing the coating that causes instability in the positioning of the optical fiber. If the optical fiber is coated with a thin film of ~IOμm, or even a 200μm coating layer, it is in close contact with the bare optical fiber, and there is no need to remove the coating in that area if there is no problem with positioning. Needless to say.

この場合も光ファイバを挿入する孔部とガイド孔との位
置関係が重要で、やはり高１１°１度加工が２堡となり
、コスト基の問題を自していた。In this case as well, the positional relationship between the hole into which the optical fiber is inserted and the guide hole is important, and the machining at a height of 11 degrees requires two steps, which poses a cost-based problem.

また、それぞれ光ファイバ１心に対する光コネクタフェ
ルールの２式面積が／ングルモードフン・イバで約５１
１、多心（５心）光コネクタフェルール約１０　ａｍ”
と、光ファイバ心線面積的０　、６　＋ｎ”に対して、
いずれも１０倍近（大きくなり、光コネクタの小型化と
いう点でも問題を有している。In addition, the area of 2 sets of optical connector ferrules for one optical fiber is approximately 51 mm per fiber.
1. Multi-core (5-core) optical connector ferrule approximately 10 am”
And for the optical fiber core area 0,6 +n'',
Both are about 10 times larger (larger), and there is also a problem in terms of miniaturization of optical connectors.

［発明の目的、構成コ 本発明は、上述のような光ファイバ心線を備えるフェル
ールを結合して光コネクタを構成する際、伝送損失のす
くなく、精度の高い光フネククを構成簡単で、且つ低コ
ストで得ることにあり、そのｔｌ■成は、光ファイバ端
部の結合をおこなう光コネクタにおいて、スリーブを介
して結合されるフェルールは複数の結合部を備えており
、前記複数の結合部を備えるフェルールは、後述のよう
に、光ファイバ心線をフェルールの金属パイプに共通に
挿通した状咀で一括樹脂モールドした一括樹脂成形体を
分割したものを用いることを特徴をもつものである。[Purpose of the Invention, Configuration] The present invention provides a simple and low-cost optical connector with low transmission loss and high precision when configuring an optical connector by combining ferrules with optical fiber cores as described above. The tl configuration is that in an optical connector that couples the ends of optical fibers, the ferrule that is coupled via the sleeve is provided with a plurality of coupling parts, and the ferrule is equipped with the plurality of coupling parts. As will be described later, the ferrule is characterized in that it is made by dividing a resin-molded body into which a cored optical fiber is commonly inserted into the metal pipe of the ferrule.

第１図（イ）は本発明の光コネクタの主要）Ｍ−分を分
解して示し、同（Ｉ」）はフェルールの上面を示し、（
ハ）は固定用ハウジングを示し、に）は全体ｉ１１立状
態を小す０ イブにおいて８は金属パイプよりなる＋Ｕ数のフェルー
ル結合部を示し、フェルール６は前記ＩＭ　ｈの結合部
８を含み、光ファイバ心線１つば！！ＩＸ９、光ファイ
バ心線ｌの挿入部９′等と一体に、一括樹脂モールドに
よって形成される。この場合、前記樹脂モールドによっ
て、多心の光ファイノく心線１も、後述のように金型に
よって、その後光コネクタとして対をなすフェルールと
ともに金属ノぐ、イブ中でも、モールド樹脂によって被
）夏を除去した光ファイバガラス部が配置された伏憶で
固着される。Fig. 1 (A) shows an exploded view of the main (M) component of the optical connector of the present invention, Fig. 1 (I') shows the top surface of the ferrule, and (
C) indicates a fixing housing, and C) indicates the overall i11 standing state. In 0 Eve, 8 indicates a +U number of ferrule joints made of a metal pipe, and the ferrule 6 includes the joint 8 of the IM h, One fiber optic cable! ! It is integrally formed with the IX9, the insertion portion 9' of the optical fiber core 1, etc. by resin molding. In this case, the resin mold allows the multi-core optical fiber 1 to be molded into a metal mold together with the ferrules that form a pair as an optical connector, as will be described later. The removed optical fiber glass portion is fixed in place.

図において光ファイバ心線１はテープ型光ファイバであ
るが、どのようなタイプの多心光ファイバでも差支えな
い。例えばフェルールの１方は多心テープ心線で、他方
は単心線集合タイプでもよい。In the figure, the optical fiber core 1 is a tape-type optical fiber, but any type of multi-core optical fiber may be used. For example, one of the ferrules may be a multi-fiber tape core, and the other may be of a single-fiber bundle type.

このような複数の結合部８を有し、結合部８を形成する
金属パイプの端部位置に、複数の光ファイバガラス部端
面を固定保持したフェルールれぞれスリーブ７を介して
、前記結合部８ζこよって結合し、両つば部９に、（ハ
）図に小すようなばね十Ａよりなる固定用ハウノ／グ部
材ＩＯを係合すれば、に）図に示すように、光コネクタ
が構成される。A metal pipe having such a plurality of coupling parts 8 is attached to an end position of the metal pipe forming the coupling parts 8 through a ferrule sleeve 7 which holds the end surfaces of a plurality of optical fiber glass parts fixedly. 8ζ, and by engaging the fixing member IO consisting of a spring 10A as shown in the figure (c) with both the flange portions 9, the optical connector is assembled as shown in the figure (b). configured.

固定用ハウジング部材１０は前記のようなばね材のみに
よるものでな（、複数部品により、尤ファイバの軸線方
向に常時力を加えるような構成のものでよい。The fixing housing member 10 is not only made of a spring material as described above, but may also be made of a plurality of parts so as to constantly apply force in the axial direction of the fiber.

（口）図では３心、２結合部を打するフェルールを示し
たが、第２図（、ｆｌ　、　＜口）、（Ｉ→、（→，け
）、（へ）は多心配置のフェルールの例を示す。同に）
図に示すように単心配置でもよく、（ホ）、（へ）図の
ように、並行方向に立体的−こ複数の光ファイバを内蔵
する多心配置の結合部を備えるフェルールとして構成す
ることもできる。The figure (1) shows a ferrule with 3 cores and 2 joints, but Figure 2 (, fl, <2), (I→, (→, ke), (to) shows a ferrule with a multi-core arrangement. An example is shown below.)
As shown in the figure, it may be a single-fiber arrangement, or as shown in (e) and (f), it can be configured as a ferrule with a multi-fiber arrangement coupling part containing three-dimensional three-dimensional optical fibers in parallel directions. You can also do it.

このような構成では例えば、２．５＋＋＋＋φのフェル
ールには２０心まで収納できることを確認している。It has been confirmed that with such a configuration, for example, up to 20 cores can be accommodated in a 2.5+++φ ferrule.

第３図は本発明の光ファイバ心線を備えるフェルールの
製造方法の説明図である。FIG. 3 is an explanatory diagram of a method for manufacturing a ferrule including an optical fiber core according to the present invention.

図において１２は成形用金型の上面図であり、例えば２
つ割りに形成される。この金型１２は例えば、１１１１
出の第１図の１対のフェルールを製Ｗ　する仝（−′（
てあって、光ファイバ心線、つば部、光ファイバ挿入部
、金属パイプ支持部等、１対の光ファイバ心線を備える
フェルールを形成できる膨面を備えている。多心の光フ
ァイバ心線１の各Ｄｆ　＋Ｕをー；■り分において除去
して、光ファイバガラス部２を露出させ、この露出させ
た光ファイバガラス部２を覆い、１対のフェルールに共
通となるように金属パイプ１１を挿通させ、光ファイバ
ガラス部２を覆った２本の金属パイプ１１を並行して両
フェルールのつば部対応の型面部分にわたし、光ファイ
バ心線１の余長部分は型外に出し、金型１２を合わせて
、モールド樹脂１３、例えばエボキ／樹脂を金型１２内
にｌ主人する。ここで、金型ゲート、う／ナー等は省略
されているが、第４図に示すようにパイプ１１の中央部
に、成形時にガス抜き用の溝、または孔１５を加工によ
り設けたものを使用するのもよく、金属パイプ１１の内
面に凹凸、またはねじ面をイ１するものを使用すれば、
樹脂との結合が向−１１する。In the figure, 12 is a top view of the molding die, for example 2
It is formed into two parts. This mold 12 is, for example, 1111
To manufacture the pair of ferrules shown in Figure 1,
It is provided with an enlarged surface capable of forming a ferrule including a pair of optical fibers, such as an optical fiber core, a collar portion, an optical fiber insertion portion, and a metal pipe support portion. Each Df +U of the multi-core optical fiber core wire 1 is removed by -;■ to expose the optical fiber glass portion 2, and this exposed optical fiber glass portion 2 is covered to be common to the pair of ferrules. Insert the metal pipes 11 so that The parts are taken out of the mold, the mold 12 is put together, and a mold resin 13, for example, epoxy/resin is placed inside the mold 12. Although mold gates, pipe holes, etc. are omitted here, as shown in FIG. It is also a good idea to use a metal pipe 11 with an uneven or threaded surface on its inner surface.
Bonding with the resin is in the direction of -11.

モールド樹脂１３の金型内への注入により、両全属バイ
ブ１１は二つのつば部と一体に結合され、金属パイプ１
１と光ファイバ心線１との間にも十分樹脂が充填された
状態で、光ファイバ心線１は金属パイプ１１に固イード
される。By injecting mold resin 13 into the mold, both all-metal vibes 11 are integrally combined with the two collar parts, and the metal pipe 1
The optical fiber coated wire 1 is fixed to the metal pipe 11 in a state in which the space between the optical fiber coated wire 1 and the optical fiber coated wire 1 is sufficiently filled with resin.

以上のようにしてモールド樹脂によって成形された一括
成形体を金型より取出し、前記金属パイプ１１の部分で
切断により分ｇｌ　Ｌ／　、金属パイプＩＩの切断端面
において、光ファイバガラス部端面を研磨すれば、その
後１対の光コネクタとして使用される多心光ファイバ心
線を備え、二つまたはそれ以」二の結合部を何するフェ
ルールが形成される。The batch molded body molded with the mold resin as described above is taken out from the mold, cut at the metal pipe 11 portion, and the end surface of the optical fiber glass portion is polished at the cut end surface of the metal pipe II. For example, a ferrule is formed that connects two or more optical fibers, which are then used as a pair of optical connectors.

この場合、結合部を形成する金属パイプに，各フェルー
ルにおいて互に異径で、対応結合部としては、それぞれ
同径のものを使用すれば、誤接続を防止することができ
る。また成形時に、結合方向を明示するような印を付け
てもよい。In this case, erroneous connections can be prevented by using metal pipes forming the joint portions that have different diameters for each ferrule and the corresponding joint portions having the same diameter. Further, during molding, a mark may be added to clearly indicate the bonding direction.

このように構成された１対のフェルールに対し、第１図
（イ）に示す１対のスリーブ７を用い、両フェルールの
結合部８をそれぞれ２つのスリーブ７に対応させて挿入
し、これをすでに説明したように固疋用ハウジング耶材
１０で両つばＳｌり間を押ハニするように支持すれば、
光コネクタが構成される。A pair of sleeves 7 shown in FIG. 1(A) are inserted into a pair of ferrules configured as described above, with the connecting portions 8 of both ferrules corresponding to the two sleeves 7, respectively. As already explained, if the fixed housing member 10 is supported so as to press between the two ribs S1,
An optical connector is configured.

スリーブを使用する際、第５図に示すように、−−ツ（
７）　収納ハウジング１４に２つのスリーブ７を備える
ものを樹脂モールドによって、一体に製作してもよく、
また金属スリーブに割の入ったもの、あるいはセラミッ
クスリーブを用いてもよい。When using the sleeve, as shown in Figure 5,
7) The storage housing 14 provided with the two sleeves 7 may be integrally manufactured by resin molding.
Alternatively, a metal sleeve with a slot or a ceramic sleeve may be used.

また、第３図に示すように、金属パイプの一部に凹ア１
５を形成されたものを使用してもよい。このような形状
のものを用いるとすれば、一対のフェルールにするため
の切断後、金属／＜イブのノ（りが生じても問題もなく
、また、挿入される光ファイバ心線ｌは、実際的にはそ
の光ファイバガラスぶ９２を予め融着接続して、敵前部
１Ｂを有するものを挿入してもより１．この場合、一対
のフェルールとするための切断は、この融む部Ｉｆｔを
除いて、切断分割してもよい。この場合、切断は融着Ｐ
Ｉ（ＩＧを間にして３〜５龍のところで、２ケ所切断し
、融ｄ部を除去しき形で分割が行われる。Also, as shown in Figure 3, there is a concave hole in a part of the metal pipe.
5 may be used. If such a shape is used, there will be no problem even if there is a metal / Practically speaking, it would be better to fusion-splice the optical fiber glass plate 92 in advance and insert the one having the front part 1B. It may be cut and divided except for the fusion P.
Dividing is performed by cutting at two places at 3 to 5 points with I (IG in between) and removing the fused d part.

以上説明した本発明のフェルール製造方法から理解でき
るように、本発明においては、１皮蕩を除去した光ファ
イバガラス部２をモールド樹脂で金属パイプ１１に固着
させた状憶で切断しているので、その後の光コネクタと
して接続の際は、前記切断による両断面がほぼ一致する
ようになる。何故ならば、フェルールにはすくなくとも
２本の金属、＜イブがモールド樹脂によってつば部等と
一体に形成されており、この光ファイバ心線の軸線方向
に延びる金属パイプが、接続時の位置決めを行うことに
大きく関与するからである。As can be understood from the ferrule manufacturing method of the present invention explained above, in the present invention, the optical fiber glass portion 2 from which one skin has been removed is fixed to the metal pipe 11 with molded resin, and then cut. , When connecting as an optical connector thereafter, both cross sections obtained by the above-mentioned cutting will almost match. This is because the ferrule has at least two metal pipes formed integrally with the brim etc. using molded resin, and this metal pipe extending in the axial direction of the optical fiber conducts positioning during connection. This is because it is greatly involved.

すでに説明したものでは、２木の金属パイプ内に、それ
ぞれ里心または多心の光ファイノく心線を備えるものに
ついて説明したが、一方は光ファイバ心線を備えず、位
に決め目的のみに使用することも可能である。また更に
金属パイプによる結合部を増した構成とすることも可能
である。またフェルール配列においても、かならずしも
水平にする必要もない。この場合は、金型が軸方向に分
割できるようにしておけばよい。In the previous explanation, we have described two wooden metal pipes each equipped with optical fiber cores or multi-core optical fibers, but one is not equipped with optical fiber cores and is used only for the purpose of positioning. It is also possible to use Furthermore, it is also possible to have a configuration in which the number of joints using metal pipes is increased. Furthermore, the ferrule arrangement does not necessarily need to be horizontal. In this case, the mold may be split in the axial direction.

［実施例］ ［［１１，８鳩厚さＯ，Ｓ−一の５心テープ心線２木の
光コネクタの実施例について説明する。[Example] [[11.8 An example of an optical connector with two 5-fiber tape core wires having a thickness of O and S-1 will be described.

被覆を２０−■除去し、ステンレス製の外径２．４！＋
９９±Ｑ、ｔＪＱＩｓｍφの金属パイプ内にセットし、
金型にて低圧のエポキシ樹脂で一括成形を行い、この一
括成形体を金型より取出し、中央部で切断し、端面を研
磨した後、第５図に示す　内面２．４９Ｇｔｈ０．００
１龍φのハウジング収納型のスリーブに通して、結合損
失を評価した。The coating was removed by 20-■ and the stainless steel outer diameter was 2.4! +
Set in a metal pipe of 99±Q, tJQIsmφ,
Batch molding is performed using low-pressure epoxy resin in a mold, the molded body is taken out from the mold, cut at the center, and the end surfaces are polished to form an inner surface of 2.49Gth0.00 as shown in Figure 5.
The coupling loss was evaluated by passing it through a housing storage type sleeve of 1 dragon diameter.

総ｆｉ１０７７）光コネクタ（５１Ｌ、ｌＸ２Ｘリーブ
×１０）すなわち１００本の光ファイバ結合において、
マツチング剤使用で、平均０．２３ｄＢ　、最大０．５
２ｄＢ１最１ｌｓＯ，０３ｄＢと非常に低ｔ口失結合が
実現できた。In total fi1077) optical connector (51L, lx2x reave x 10), i.e. 100 optical fibers,
Using matching agent, average 0.23dB, maximum 0.5
A very low t-mouth loss coupling of 2dB1 maximum of 1lsO,03dB was achieved.

なおこのときつば部長は７龍を採用している。At this time, Director Tsuba has adopted 7 dragons.

また第６図に示すように、つば部に対して、フェルール
結合部が偏心して突き出していることから、逆方向誤結
合は容易に確認できる。Further, as shown in FIG. 6, since the ferrule coupling portion projects eccentrically with respect to the collar, incorrect coupling in the reverse direction can be easily confirmed.

フェルールの固定に関しては第１図（ハ）に示す固定用
ハウソングを利用した。更に、実施例においては、光コ
ネクタフェルール後部に心線保護用のゴムブーツをつけ
ている。For fixing the ferrule, a fixing song shown in FIG. 1 (c) was used. Furthermore, in the embodiment, a rubber boot for protecting the core wire is attached to the rear of the optical connector ferrule.

また同様にシングルモードファイバをフェルール内にそ
れぞれ３心モールドして評価したところ、マツチング剤
使用で、総数１（１の光コネクタで平均０．２０ｄＢと
良好な結果を得た。Similarly, when three single-mode fibers were molded into ferrules and evaluated, good results were obtained with an average of 0.20 dB for a total of 1 (1 optical connector) using a matting agent.

［効果］ 本発明によれば、後に光接続をなす光ファイバ（ガラス
部）を複数の金属パイプ中で一括樹脂成形により前記金
属パイプに固着し、光接続時には、複数の金属パイプが
結合部としての位置決めを行い、一括樹脂成形時とほと
んどかわらない伏１で、各光ファイバ心線ごとの光接続
を行うことができ、成形特、複数の光ファイバ（ガラス
部）の配置に細かい配慮を要することなく、伝送損失の
きわめてすくない光コネクタを得る゛ことができる。[Effect] According to the present invention, optical fibers (glass portions) that will later be optically connected are fixed to the metal pipes by batch resin molding in a plurality of metal pipes. It is possible to perform optical connections for each optical fiber at a position that is almost the same as in bulk resin molding, and requires special consideration in molding and placement of multiple optical fibers (glass parts). Therefore, it is possible to obtain an optical connector with extremely low transmission loss.

２．５＠ＩＩφの実施例を例にとると、２．５ｍ−φの
フェルール径２木の中に、１Ｇ心の光ファイバを含んだ
光コネクタにおいては、ファイバ心線あたりの面積がｌ
−■８と従来の１１５°〜ｌ／　１Ｇに高密度している
。　　　゛また、シングルモードファイバもフェルール
内に３心内装しており、同様に従来の３　Ｇ’ｊ　ｊ：
’＋１密１１化している。従来のシングルタイプの光コ
ネクタの・ド均結合損失はマツチング剤を用いても平均
０．６ｄＢがようやく達成できる値であったのに対し、
本発明では０．２０ｄＢを容易に達成することができた
。これらの点はこの項の冒頭に述べたところによる。例
えば、第８図に示す従来のもののように、本発明では位
置決めのガイドピンを使用することなく、複数の多心フ
ァイバを固着して備える金属パイプが位置決めを行い、
このため、つば部そのものの大きさを減少させることが
でき、形伏を縮少させることができるのである。Taking the example of 2.5@IIφ as an example, in an optical connector that includes a 1G optical fiber in two ferrule diameters of 2.5m-φ, the area per fiber core is l.
-■8 and the conventional 115°~1/1G density.゛Also, the single mode fiber has three cores inside the ferrule, and similarly the conventional 3G'j j:
'+1 The density has increased to 11. The average coupling loss of conventional single-type optical connectors was only 0.6 dB, which could only be achieved even with the use of matching agents.
In the present invention, 0.20 dB could be easily achieved. These points are as stated at the beginning of this section. For example, as in the conventional system shown in FIG. 8, in the present invention, a metal pipe having a plurality of multi-core fibers fixedly performs positioning without using a guide pin for positioning.
Therefore, the size of the brim itself can be reduced, and the shape can be reduced.

結合に関しては、スリーブと固定用ハウジングがあれば
よく、シングルな＋ｉ成で、コストも２しく減少できる
。Regarding the connection, all that is needed is a sleeve and a fixing housing, and the cost can be reduced by two times with a single +i configuration.

またスリーブについては、複数のスリーブをハウジング
を使って一体化することにより、作業しやす（なってい
る。In addition, the sleeves are made easier to work with by integrating multiple sleeves using a housing.

４、図面）ＩＴｉＴ　！１１な説明 第１図は本発明の実施例を示し、（イ）園は光コネクタ
主５　ｉｌ（の骨組１図、（Ｊ１図はフェルールの止血
図、（ハ）図は固定用ハウジング、（１図は組立図を示
す。4. Drawing) ITiT! 11 Explanation Figure 1 shows an embodiment of the present invention, (A) Figure 1 shows the framework of the main optical connector 5il (Figure J1 is a hemostatic diagram of the ferrule, (C) Figure shows the fixing housing, ( Figure 1 shows an assembled diagram.

第２図（イ）　、　（Ｉ：Ｉ）　、（ハ）、曽、（ホ）
、（へ）は本発明の多心光ファイバを備えるフェルール
を示し、に）は同じりＣ１１心のフェルールを示す。Figure 2 (A), (I:I), (C), Zeng, (E)
, (f) shows a ferrule equipped with the multi-core optical fiber of the present invention, and (b) shows the same C11-core ferrule.

第３図は本発明製造方法の説明図である。FIG. 3 is an explanatory diagram of the manufacturing method of the present invention.

第４図はフェルール結合部となる金属パイプを示す。FIG. 4 shows a metal pipe that serves as a ferrule joint.

第５図はスリーブをモールドした収納ハウジングを示す
。FIG. 5 shows a storage housing with a molded sleeve.

第６図は結合方向を識別できるフェルールの一例を示す
。FIG. 6 shows an example of a ferrule with which the bonding direction can be identified.

第７図は従来の拭本的なンングルモードファイバ用光コ
ネククのフェルール構成を示す。FIG. 7 shows a ferrule configuration of a conventional optical connector for a single-mode fiber.

第８図は従来のノみ本釣な多心光ファイバ用光コネクク
の７エルール構成を示す。FIG. 8 shows a seven-erule configuration of a conventional optical connector for multi-core optical fibers.

１・・・光ファイバ心線、２・・・光ファイバガラス部
、３…単心フエルール、４…多心フエルール、５・０ピ
ン用ガイド孔、６・・・°フェルール、７・・・スリー
ブ、８・・・フェルール結合部、９・・・つば部、１Ｇ
・・・固定用ハウジング、１１・・・金属パイプ、１２
・・・金属パイプ、１３・・・モールド樹脂、１４・・
・モールド収納ハウジング。DESCRIPTION OF SYMBOLS 1... Optical fiber core wire, 2... Optical fiber glass part, 3... Single-core ferrule, 4... Multi-core ferrule, 5/0 pin guide hole, 6...° ferrule, 7... Sleeve , 8... Ferrule coupling part, 9... Brim part, 1G
... Fixed housing, 11 ... Metal pipe, 12
...Metal pipe, 13...Mold resin, 14...
・Mold storage housing.

１１図 （ニ） 大２肥 ７？３図Figure 11 (d) 2 large fertilizers 7?3 figure

Claims (9)

【特許請求の範囲】[Claims] （１）光ファイバ端部の結合をおこなう光コネクタにお
いて、スリーブを介して結合される一対のフェルールは
、それぞれ複数の対応結合部を備えており、前記複数の
結合部を備える一対のフェルールとして、光ファイバ心
線をフェルールの結合部となる金属パイプに挿通した状
態で一括樹脂モールドした一括成形体を分割したフェル
ールを用いることを特徴とする多心光コネクタ。(1) In an optical connector that couples the ends of optical fibers, a pair of ferrules that are coupled via a sleeve are each provided with a plurality of corresponding coupling parts, and the pair of ferrules equipped with the plurality of coupling parts include: A multi-fiber optical connector characterized by using a ferrule that is made by dividing an integral molded body in which optical fiber core wires are inserted into a metal pipe that serves as a joining part of the ferrule and then molded with a resin all at once. （２）異径の金属パイプを用いることを特徴とする特許
請求の範囲第１項記載の多心光コネクタ。(2) The multi-core optical connector according to claim 1, characterized in that metal pipes of different diameters are used. （３）対となるフェルールに結合方向を示す印を設ける
か、あるいは結合を示す形状としたことを特徴とする特
許請求の範囲第１項記載の多心光コネクタ。(3) The multi-core optical connector according to claim 1, wherein the pair of ferrules is provided with a mark indicating the coupling direction or has a shape indicating the coupling. （４）金属パイプにおいて外径に１部凹部を有しており
、この凹部で分割されていることを特徴とする特許請求
の範囲第１項記載の多心光コネクタ。(4) The multi-core optical connector according to claim 1, characterized in that the metal pipe has a recessed portion at a portion of its outer diameter, and is divided by the recessed portion. （５）スリーブとして複数のスリーブが一つのハウジン
グに収納されたものを用いることを特徴とする特許請求
の範囲第１〜４項記載の多心光コネクタ。(5) A multi-core optical connector according to any one of claims 1 to 4, characterized in that a plurality of sleeves are housed in one housing as the sleeve. （６）光ファイバ端部の結合をおこなう光コネクタ用フ
ェルールの製造において、金型に複数の金属パイプを配
置し、これに被覆の一部を除去した光ファイバを挿通し
て所定の位置に配し、光ファイバおよび金属パイプを一
括して樹脂で成形した後、金属パイプの中間を切断し、
１対の光コネクタ用フェルールを同時に製造することを
特徴とする多心光コネクタ用フェルールの製造方法。(6) In manufacturing ferrules for optical connectors that connect the ends of optical fibers, multiple metal pipes are placed in a mold, and optical fibers with a portion of the coating removed are inserted into the pipes and placed in a predetermined position. After molding the optical fiber and metal pipe together with resin, the middle of the metal pipe is cut,
A method for manufacturing a ferrule for a multi-core optical connector, characterized by simultaneously manufacturing a pair of ferrules for an optical connector. （７）光ファイバを挿通させる金属パイプに、溝または
穴を有するものを用いることを特徴とする特許請求の範
囲第６項記載の多心光コネクタ用フェルールの製造方法
。(7) The method for manufacturing a ferrule for a multi-core optical connector according to claim 6, wherein the metal pipe through which the optical fiber is inserted has a groove or a hole. （８）被覆の一部を除去した光ファイバは、予め融着接
続したもので実施されていることを特徴とする特許請求
の範囲第６項記載の多心光コネクタ用フェルールの製造
方法。(8) The method for manufacturing a ferrule for a multi-core optical connector according to claim 6, wherein the optical fiber from which a portion of the coating has been removed is fusion-spliced in advance. （９）融着部を除去する形で、分割切断がおこなわれて
いることを特徴とする特許請求の範囲第６〜８項記載の
多心光コネクタ用フェルールの製造方法。(9) A method for manufacturing a ferrule for a multi-fiber optical connector according to any of claims 6 to 8, wherein the ferrule is divided and cut by removing the fused portion.
JP18613684A 1984-09-04 1984-09-04 Production of multicore optical connector and ferrule Pending JPS6163804A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP18613684A JPS6163804A (en) 1984-09-04 1984-09-04 Production of multicore optical connector and ferrule
AU46985/85A AU572342B2 (en) 1984-09-04 1985-09-03 Optical connector
CA000489918A CA1270682A (en) 1984-09-04 1985-09-03 Optical connector and method of manufacturing a pair of ferrules therefor
DE8585111146T DE3582102D1 (en) 1984-09-04 1985-09-04 OPTICAL CONNECTOR AND METHOD FOR PRODUCING A PAIR OF PAIRS FOR THIS.
US06/788,404 US4708433A (en) 1984-09-04 1985-09-04 Optical connector and method of manufacturing a pair of ferrules therefor
EP85111146A EP0174013B1 (en) 1984-09-04 1985-09-04 Optical connector and method of manufacturing a pair of ferrules therefor
AU12500/88A AU586946B2 (en) 1984-09-04 1988-02-29 A method of manufacturing a pair of ferrules for an optical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18613684A JPS6163804A (en) 1984-09-04 1984-09-04 Production of multicore optical connector and ferrule

Publications (1)

Publication Number Publication Date
JPS6163804A true JPS6163804A (en) 1986-04-02

Family

ID=16183002

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18613684A Pending JPS6163804A (en) 1984-09-04 1984-09-04 Production of multicore optical connector and ferrule

Country Status (1)

Country Link
JP (1) JPS6163804A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62258409A (en) * 1986-04-09 1987-11-10 Sumitomo Electric Ind Ltd Multicore optical connector
JPS62294210A (en) * 1986-06-13 1987-12-21 Sumitomo Electric Ind Ltd Multicore optical connector ferrule and its production
JPS6385507A (en) * 1986-09-29 1988-04-16 Fujitsu Ltd Production of optical device
JPS63144606U (en) * 1987-03-13 1988-09-22
JPS63246707A (en) * 1987-04-01 1988-10-13 Sumitomo Electric Ind Ltd Optical connector ferrule
JPH01134406A (en) * 1987-11-20 1989-05-26 Ogura Houseki Seiki Kogyo Kk Optical fiber connector
JPH021706U (en) * 1988-06-15 1990-01-08
JPH0230909U (en) * 1988-08-23 1990-02-27

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62258409A (en) * 1986-04-09 1987-11-10 Sumitomo Electric Ind Ltd Multicore optical connector
JPS62294210A (en) * 1986-06-13 1987-12-21 Sumitomo Electric Ind Ltd Multicore optical connector ferrule and its production
JPS6385507A (en) * 1986-09-29 1988-04-16 Fujitsu Ltd Production of optical device
JPS63144606U (en) * 1987-03-13 1988-09-22
JPH0453611Y2 (en) * 1987-03-13 1992-12-16
JPS63246707A (en) * 1987-04-01 1988-10-13 Sumitomo Electric Ind Ltd Optical connector ferrule
JPH01134406A (en) * 1987-11-20 1989-05-26 Ogura Houseki Seiki Kogyo Kk Optical fiber connector
JPH0512682B2 (en) * 1987-11-20 1993-02-18 Ogura Jewel Industry Co Ltd
JPH021706U (en) * 1988-06-15 1990-01-08
JPH0230909U (en) * 1988-08-23 1990-02-27

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