JPS58130311A - Optical connector - Google Patents

Optical connector

Info

Publication number
JPS58130311A
JPS58130311A JP21858482A JP21858482A JPS58130311A JP S58130311 A JPS58130311 A JP S58130311A JP 21858482 A JP21858482 A JP 21858482A JP 21858482 A JP21858482 A JP 21858482A JP S58130311 A JPS58130311 A JP S58130311A
Authority
JP
Japan
Prior art keywords
jack
optical fiber
pipes
tube
plug outer
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
JP21858482A
Other languages
Japanese (ja)
Inventor
Hideyuki Takimoto
滝本　英之
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 JP21858482A priority Critical patent/JPS58130311A/en
Publication of JPS58130311A publication Critical patent/JPS58130311A/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
    • G02B6/3873—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
    • 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
    • G02B6/3867—Details of mounting fibres in ferrules; Assembly methods; Manufacture comprising air venting holes

Landscapes

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

Abstract

PURPOSE:To connect optical fibers easily with decreased transmission losses by forming a titled connector in such a way that the central axes of the optical fibers to be connected are aligned with good accuracy. CONSTITUTION:Outside plug pipes 4 which are centerd in such a way as to align the center of the outside diameter 7 of the pipes 4 and the center of the cores of fiber strands 2 are inserted into a jack 12 having an inside diameter roughly equal to the outside diameter of the pipes 4 from both ends thereof, whereby optical fiber transmission lines are connected. Then, the central axes of the optical fiber transmission lines are aligned with good accuracy and with decreased transmission losses. Since a hole 14 is provided on the side wall of the jack 12 to permit venting of air in the stage of inserting the pipes 4, the pipes 4 are inserted easily into the jack 12.

Description

【発明の詳細な説明】 発明の技術分野 本発明は光ファイバを低損失で接続することができる光
コネクターに関するものである。DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to an optical connector capable of connecting optical fibers with low loss.

近年、光ファイバの低損失化が急速に達成され、光通信
の実用化が可能となりつつある。ここに於いて、光フア
イバ間の接続技術開発は避けられなくなった。特に、光
ファイバの低損失特性をシステム設計の際に、有効に反
映させる為には、低接続損失が実現達成できる接続技術
が要求される。In recent years, the loss of optical fibers has been rapidly reduced, and it is becoming possible to put optical communications into practical use. At this point, the development of connection technology between optical fibers has become inevitable. In particular, in order to effectively reflect the low loss characteristics of optical fibers in system design, a connection technology that can achieve low connection loss is required.

一般的には０．２〜０．５ｄＢ程度の接呻損失が要求さ
れているが、周知の通り光ファイバの接続では、コアと
呼ばれる光集中領域を可能な限り突合せ、ファイバ軸を
一致させることが必曽である。コアの直径が数μｍから
５０〜６０μｍであることより、前述の条件を満足させ
る為には、顕微鏡的精度が必要となる。どの為、伝送損
失が少なく、且つ容易に接続を行なうことができる光コ
ネクターが要望されている。Generally, a contact loss of about 0.2 to 0.5 dB is required, but as is well known, when connecting optical fibers, it is important to align the light concentration areas called cores as much as possible and align the fiber axes. is absolutely necessary. Since the diameter of the core is from several μm to 50 to 60 μm, microscopic precision is required to satisfy the above conditions. For this reason, there is a demand for an optical connector that has low transmission loss and can be easily connected.

発明の目的 本発明は前述の如き要望を満足させたものであり、その
目的は伝送損失が少なく、且つ光ファイバを容易に接続
することができる光コネクターを提供することにある。OBJECTS OF THE INVENTION The present invention satisfies the above-mentioned needs, and its purpose is to provide an optical connector with low transmission loss and with which optical fibers can be easily connected.

以下実施例について詳細に説明する。Examples will be described in detail below.

発明の実施例 第１図、第２図は本発明の一実施例の断面図であり、第
１図は光フアイバ固定管３をプラグ外管４に挿入し、固
定した状態を、第、２図はプラグ外管４をジャック１２
内に挿入し、固定した状態を示したものである。Embodiment of the Invention FIGS. 1 and 2 are cross-sectional views of an embodiment of the present invention, and FIG. 1 shows the optical fiber fixing tube 3 inserted into the plug outer tube 4 and fixed therein. The figure shows plug outer tube 4 and jack 12
This figure shows the state in which it has been inserted and fixed.

光フアイバ伝送線路１の先端部はシースが取除かれ、フ
ァイバ素線２となっている。上記形状を有する光フアイ
バ伝送線路１を光フアイバ固定管３に挿入し、光フアイ
バ固定管３の端面８とファイバ素線２の端面９が完全に
一致するように固定する。プラグ外管４は第１図に示す
ような形状を有している。即ち、後述するジャック１２
との結合を容易且つ堅牢にするためのスクリュ一部５及
び光フアイバ固定管３が、管軸に対して垂直面内で自由
に移動可能な程度の間隙６を有している。The sheath is removed from the distal end of the optical fiber transmission line 1, and it becomes a bare fiber 2. The optical fiber transmission line 1 having the above shape is inserted into the optical fiber fixing tube 3 and fixed so that the end surface 8 of the optical fiber fixing tube 3 and the end surface 9 of the fiber strand 2 are completely aligned. The plug outer tube 4 has a shape as shown in FIG. That is, the jack 12 described later
The screw part 5 and the optical fiber fixing tube 3 are provided with a gap 6 that is large enough to be freely movable in a plane perpendicular to the tube axis in order to make the connection with the optical fiber fixing tube easy and robust.

プラグ外管４の外径７の中心に対して、ファイバ素線２
のコアの中心が完全に一致するように、芯出し治工具類
により芯出し操作を行゛なう。この芯出し操作を円滑且
つ安定に遂行する為に、上記した間隙６があり、この間
隙６は、ファイバ素線２のコアの中心がプラグ外管４の
外径７の中心に対してどの程度偏心しているかによって
、適当に選ぶことができる。芯出し操作終了後、光フア
イバ固定管３とプラグ外管４は図示の如く接着材ｌＯに
より固定される。このとき、光フアイバ固定管３の端面
８はプラグ外管４の端面１１より僅かに内部に入り込ん
でいる。以上の構成を有するプラグ外管４を第２図に示
す如くジャック１２の両端から挿入し、ジャック１２の
ほぼ中央部近傍で互いの端面１１，１１’を突き合わせ
る。The fiber wire 2 is connected to the center of the outer diameter 7 of the plug outer tube 4.
Perform centering operations using centering jigs and tools so that the centers of the cores of the two are perfectly aligned. In order to perform this centering operation smoothly and stably, the above-mentioned gap 6 is provided, and this gap 6 is determined by how far the center of the core of the fiber strand 2 is relative to the center of the outer diameter 7 of the plug outer tube 4. You can choose appropriately depending on how eccentric it is. After the centering operation is completed, the optical fiber fixing tube 3 and the plug outer tube 4 are fixed with adhesive lO as shown in the figure. At this time, the end surface 8 of the optical fiber fixing tube 3 is slightly deeper inside than the end surface 11 of the plug outer tube 4. The plug outer tube 4 having the above structure is inserted from both ends of the jack 12 as shown in FIG. 2, and the end surfaces 11 and 11' are brought into contact with each other near the center of the jack 12.

この突き合せを完全に行なうために、ジャック１２の内
径１３はプラグ外管４の外径７とほぼ一致している。ま
た、プラグ外管４．４′の挿入時に、内部の空気を抜く
目的で、ジャック１２のほぼ中央付近に微小な孔１４が
設けられている。互いに当接したプラグ外管４．４”は
ジャックに図示の如く具備されているスクリュー付き回
転キャップ１５を回転させることにより、上記スクリュ
一部５と嵌合し、安定且つ堅牢に固定される。以上の過
程により、２本の光フアイバ伝送路は接続される。尚、
第２図では一方のプラグ外管及びジャックの一部は図示
を省略した。In order to achieve this perfect matching, the inner diameter 13 of the jack 12 substantially matches the outer diameter 7 of the plug outer tube 4. Further, a minute hole 14 is provided approximately in the center of the jack 12 for the purpose of removing the air inside when inserting the plug outer tube 4.4'. The plug outer tubes 4.4'' which are in contact with each other are fitted with the screw portion 5 by rotating a rotary cap 15 with a screw provided on the jack as shown in the figure, and are fixed stably and robustly. Through the above process, the two optical fiber transmission lines are connected.
In FIG. 2, one plug outer tube and a part of the jack are omitted from illustration.

上述したように本実施例は、プラグ外管４の外径７の中
心とファイバ素線２のコアの中心とが一致するように芯
出しされたプラグ外管４を、プラグ外管４の外径とほぼ
等しい内径を有するジャック１２の両端から挿入するこ
とにより、光フアイバ伝送線路を接続するようにしてい
るものであるから、接続する光フアイバ伝送線路の中心
軸を精度良く一致させることができ、従って伝送損失を
少ないものとすることができる。また、ジャック１２の
側壁に孔１４を設け、プラグ外管４の挿入時、孔１４を
介して空気が抜けるようにしているので、プラグ外管４
を容易にジャック１２に挿入することができる。As described above, in this embodiment, the plug outer tube 4 is centered so that the center of the outer diameter 7 of the plug outer tube 4 coincides with the center of the core of the fiber strand 2. Since the optical fiber transmission line is connected by inserting it from both ends of the jack 12, which has an inner diameter that is approximately equal to the jack diameter, the central axes of the optical fiber transmission lines to be connected can be aligned with high accuracy. , Therefore, transmission loss can be reduced. In addition, a hole 14 is provided in the side wall of the jack 12 so that air can escape through the hole 14 when the plug outer tube 4 is inserted.
can be easily inserted into the jack 12.

尚、前述した実施例に於いては説明しなかったが、第３
図に示すように、一方のプラグ外管４（図示せず）内の
光フアイバ固定管３に弾性チューブ１６を覆せ、嵌合し
合う他方のプラグ外管４゛（図示せず）内の光フアイバ
固定管３”を−弾性チューブ１６の他端に挿入し、周囲
の雰囲気を遮断することにより、ファイバ素線２の端面
の経年変化を防止することもできる。また、本実施例に
於いては、ファイバとファイバとの結合について示した
が、一方のファイバ端面を光源或いは光検出器或いは光
回路部品の人出射面とすることによりそれらとファイバ
との結合も実現できる。Although not explained in the above-mentioned embodiment, the third
As shown in the figure, the elastic tube 16 can be placed over the optical fiber fixing tube 3 in one of the plug outer tubes 4 (not shown), and the optical fiber in the other plug outer tube 4 (not shown) that fits together. By inserting the fiber fixing tube 3'' into the other end of the elastic tube 16 and blocking the surrounding atmosphere, it is also possible to prevent the end face of the fiber strand 2 from deteriorating over time. has shown the coupling between fibers, but coupling between them can also be realized by using one fiber end face as the exit surface of a light source, a photodetector, or an optical circuit component.

発明の詳細 な説明したように、本発明は、接続する光ファイバの中
心軸を精度良く一致させることができるものであるから
、伝送損失を少ないものとすることができる利点がある
。また、ジャックの側壁に微小孔を設けであるので、プ
ラグ外管を容易にジャック内に挿入することができる利
点がある。As described in detail, the present invention has the advantage that the central axes of optical fibers to be connected can be made to coincide with each other with high precision, so that transmission loss can be reduced. Furthermore, since the side wall of the jack is provided with a microhole, there is an advantage that the outer plug tube can be easily inserted into the jack.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は本発明の一実施例の断面図、第３Ｗ！
Ｊは本発明の他の実施例の要部断面図である。 １は光フアイバ伝送線路、２はファイバ素線、３は光フ
アイバ固定管、４はプラグ外管、５はスクリュ一部翫、
６は間隙、１０は接着材、１２はジャック、１５は回転
キャンプ、１６しよ号１性チューブである。1 and 2 are cross-sectional views of one embodiment of the present invention, and 3W!
J is a sectional view of a main part of another embodiment of the present invention. 1 is an optical fiber transmission line, 2 is a fiber wire, 3 is an optical fiber fixed tube, 4 is a plug outer tube, 5 is a screw part,
6 is a gap, 10 is an adhesive, 12 is a jack, 15 is a rotating camp, and 16 is a first tube.

Claims (1)

【特許請求の範囲】[Claims] 光ファイバが固定された光フアイバ固定管と、該光フア
イバ固定管が挿入され、固定されたプラグ外管と、両端
から前記プラグ外管が、その端面が当接するように挿入
される前記プラグ外管の外径とほぼ等しい内径を有する
ジャックとから成る光コネクターに於いて、前記光フア
イバ固定管に固定された光ファイバのコアと前記プラグ
外管の中心とを一致させた状態で、前記光フアイバ固定
管を前記プラグ外管内に固定し、且つ前記ジャックの側
壁に微小孔を設けたことを特徴とする光コネクタ−。an optical fiber fixing tube to which an optical fiber is fixed; a plug outer tube into which the optical fiber fixing tube is inserted and fixed; and a plug outer tube into which the plug outer tube is inserted from both ends so that their end surfaces abut. In an optical connector consisting of a jack having an inner diameter approximately equal to the outer diameter of the tube, the optical fiber is An optical connector characterized in that a fiber fixing tube is fixed within the plug outer tube, and a microhole is provided in the side wall of the jack.
JP21858482A 1982-12-13 1982-12-13 Optical connector Pending JPS58130311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21858482A JPS58130311A (en) 1982-12-13 1982-12-13 Optical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21858482A JPS58130311A (en) 1982-12-13 1982-12-13 Optical connector

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP51054528A Division JPS5845683B2 (en) 1976-05-13 1976-05-13 Optical connector

Publications (1)

Publication Number Publication Date
JPS58130311A true JPS58130311A (en) 1983-08-03

Family

ID=16722239

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21858482A Pending JPS58130311A (en) 1982-12-13 1982-12-13 Optical connector

Country Status (1)

Country Link
JP (1) JPS58130311A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750803A (en) * 1985-03-22 1988-06-14 U.S. Philips Corp. Connector for optical fibres having a radial vent hole opening communicating with a surface duct
US5680494A (en) * 1996-05-16 1997-10-21 Bell Atlantic Network Services, Inc. FC-type optical fiber connector adapter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750803A (en) * 1985-03-22 1988-06-14 U.S. Philips Corp. Connector for optical fibres having a radial vent hole opening communicating with a surface duct
US5680494A (en) * 1996-05-16 1997-10-21 Bell Atlantic Network Services, Inc. FC-type optical fiber connector adapter

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