JPS59125706A - Optical connector - Google Patents

Optical connector

Info

Publication number
JPS59125706A
JPS59125706A JP22207482A JP22207482A JPS59125706A JP S59125706 A JPS59125706 A JP S59125706A JP 22207482 A JP22207482 A JP 22207482A JP 22207482 A JP22207482 A JP 22207482A JP S59125706 A JPS59125706 A JP S59125706A
Authority
JP
Japan
Prior art keywords
elastic sleeve
optical connector
optical
slit
adapter
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.)
Granted
Application number
JP22207482A
Other languages
Japanese (ja)
Other versions
JPH0356447B2 (en
Inventor
Kaoru Moriya
守谷　薫
Masayoshi Shigihara
正義 鴫原
Norio Suzuki
鈴木　紀夫
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP22207482A priority Critical patent/JPS59125706A/en
Publication of JPS59125706A publication Critical patent/JPS59125706A/en
Publication of JPH0356447B2 publication Critical patent/JPH0356447B2/ja
Granted 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
    • G02B6/3877—Split 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
    • G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3825—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs

Landscapes

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

Abstract

PURPOSE:To form an optical connector having fixed coupling loss and high coupling reproducibility by fitting a rotation preventing means to an elastic sleeve for an optical connector for connecting opposingly the end surfaces of a pair of optical fibers in the elastic sleeve inserted into an adaptor having a cylindrical inner peripheral surface. CONSTITUTION:The elastic sleeve 7 having a slit in its axial direction is inserted into the adaptor 1 having a cylindrical inner peripheral surface. The elastic sleeve 7 has a semi-circular notched step part 9 at its end part. The rotation preventing means, e.g. a stopper 8 corresponding to the shape of the notched step part 9, is fixed on the inner surface of the adaptor 1 by spot welding or adhesives. The stopper 8 fixes the elastic sleeve 7 in the axial direction and prevents the rotation. In the optical connector, the elastic sleeve in the adaptor is prevented from rotation, so that the position of the slit of the elastic sleeve 7 is arranged always at a fixed position corresponding to a ferrule holding the optical fibers. Therefore, the coupling loss of the connector is kept always constant and the stable operation of an optical function element is obtained with high coupling reproducibility.

Description

【発明の詳細な説明】 （１）発明の技術分野 本発明は光通信システム等で用いる光ファイ・ぐを結合
するための光コネクタに関するものである。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to an optical connector for coupling optical fibers used in optical communication systems and the like.

（２）技術の背景 光信号を伝送するための元ファイバを結合する光コネク
タは、アダプタ内で結合すべき一対の元ファイバの端面
同士を突き合せて両党ファイバを光学的に接続するもの
であり、光信号によシ作動する光機能素子を安定した特
性で動作させるために元コネクタにおける結合損失は結
合のたびに変化せず常に一定の損失量であることが望ま
しい。(2) Background of the technology An optical connector that couples source fibers for transmitting optical signals is an optical connector that optically connects the two fibers by butting the end faces of a pair of source fibers to be coupled together within an adapter. In order to operate an optical functional element operated by an optical signal with stable characteristics, it is desirable that the coupling loss in the original connector is always constant and does not change each time it is coupled.

（３）従来技術と問題点 従来の元コネクタの構成部材を第１図および第２図に示
す。円筒内周面を有するアダプタ１内に、鴎２図に示す
ような軸方向にスリット３を有する弾性スリーブ２が嵌
挿され、両端がアダプタの段差加工、かしめ加工あるい
はｇ　ＩＪング等によシ封止され、弾性スリーブ２はア
ダプタ１内に軸方向に移動不能に装着される。結合すべ
き光ファイ・ｆの芯線５は第３図に示すような整列部材
（フェルール）４の中心軸に沿って保持される。第３図
のフェルール４は製造の都合上軸方向に沿って凹所６が
形成されている。このよｐなフェルール４はアダプタ１
の両仰］から内部に挿入され、結合すべき一対のフェル
ール同士が突き合わされその中心の光ファイバの芯線５
同士が光学的Ｆ接続される。(3) Prior Art and Problems Components of a conventional original connector are shown in FIGS. 1 and 2. An elastic sleeve 2 having a slit 3 in the axial direction as shown in Fig. 2 is fitted into an adapter 1 having a cylindrical inner circumferential surface, and both ends of the adapter are shaped by step machining, caulking, g IJ ring, etc. The elastic sleeve 2 is sealed and axially immovably mounted within the adapter 1 . The core wire 5 of the optical fiber f to be coupled is held along the central axis of an alignment member (ferrule) 4 as shown in FIG. The ferrule 4 shown in FIG. 3 has a recess 6 formed along the axial direction for manufacturing reasons. This kind of p ferrule 4 is adapter 1
A pair of ferrules to be coupled are butted against each other, and the core wire 5 of the optical fiber is inserted into the interior from both sides of the ferrule.
They are optically F-connected.

フェルール４はフクロナツト（図示しガい）等の公知手
段によりアダプタ１にデレ一定の円周方向（回転方向）
位置に固定される。このような従来の光コネクタにおい
ては、弾性スリーブ２がアダプタｌ内で回転するため、
弾性スリーブ２のスリット３の位置がフェルール４に対
し一５１ｉ２ｔｌてならず、従って、光結合損失が一定
とならず、ファイバ接続のたびに結合損失が変化し安定
した光機能素子の動作が得られないという欠点があった
。特に第３図に示すような凹所６を有するフェルールの
賜金、弾性スリーブ２のスリット部が凹所６内に入シ込
みその位置変化による結合損失の変化が大きく力るため
上記不具合は顕著になるものであった。The ferrule 4 is secured to the adapter 1 in a constant circumferential direction (rotational direction) using a known means such as a fukuro nut (shown in the figure).
Fixed in position. In such a conventional optical connector, since the elastic sleeve 2 rotates within the adapter l,
The position of the slit 3 of the elastic sleeve 2 is not equal to the ferrule 4, so the optical coupling loss is not constant, and the coupling loss changes every time the fiber is connected, making it impossible to obtain stable operation of the optical functional element. There was a drawback that there was no In particular, due to the ferrule having a recess 6 as shown in Fig. 3, the slit portion of the elastic sleeve 2 enters into the recess 6 and the change in the coupling loss caused by the change in position causes a large force, so the above problem becomes noticeable. It was something like that.

（４）発明の目的 本発明は上記従来技術の欠点に鑑みなされたものであっ
て、結合損失が一定で結合の再現性の高い光コネクタの
提供を目的とする。(4) Purpose of the Invention The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide an optical connector with constant coupling loss and high coupling reproducibility.

（５）発明の構成 この目的を達成するため、本発明では、円筒内周面を有
するアダプタ内に、軸方向にスリットを有する弾性スリ
ーブを嵌挿し、該弾性スリーブ内で一対の光フアイバ端
面同士を対向させて結合する元コネクタに′こおいて、
上記弾性スリーブの回転防止手段を具備しているー （６）発明の実施例 第４図は不発明の一笑施例の断面図である。円筒内周面
を有するアダプタ１円に、軸方向にスリット３を有する
弾性スリーブ７が嵌挿される。この弾性スリーブ７は第
５図に示すようにその端部に半円形状の切欠き段差部９
を有する。アダプタ１の内面には、この切欠き段差部９
の形状に対応した形状のストッパ８（第５図参照）がス
ポット溶接又は接着剤によシ固定される８、このような
ストッパ８を設けることによｐ１弾弾性スリーブ内軸方
向に固定されるとともにその回転が防止される。(5) Structure of the Invention In order to achieve this object, in the present invention, an elastic sleeve having a slit in the axial direction is inserted into an adapter having a cylindrical inner peripheral surface, and the end surfaces of a pair of optical fibers are connected within the elastic sleeve. Place them on the original connector to be joined facing each other,
(6) Embodiment of the Invention Equipped with means for preventing rotation of the elastic sleeve - (6) Embodiment of the Invention FIG. 4 is a sectional view of an embodiment of the invention. An elastic sleeve 7 having a slit 3 in the axial direction is fitted into an adapter having a cylindrical inner peripheral surface. As shown in FIG. 5, this elastic sleeve 7 has a semicircular notch step 9 at its end.
has. The inner surface of the adapter 1 has this cutout stepped portion 9.
A stopper 8 (see Fig. 5) having a shape corresponding to the shape of is fixed by spot welding or adhesive 8. By providing such a stopper 8, the p1 elastic sleeve is fixed in the inner axial direction. At the same time, its rotation is prevented.

弾性スリーブの回転防止手段の別の例を第６図ないし第
８図に示す。第６図は弾性スリーブ１０のスリット３に
嵌入する突条１１を軸方向に沿ってレール状に形成した
ものである。突条１１は角棒又は丸棒により構成しその
長さくはアダプタ１の全長にわたってもよいし短くても
よい。第７図は、アダプタｌの内面に突出するピン１２
全設け、このビン１２を弾性スリーブ１０のスリット３
内に挿入することにより弾性スリーブ１０の回Ｅｋ防止
するものである。第８図は、アダプタ１の内面にポンチ
等によりダボ１３を突出させて打ち出し、とのダボ１３
を弾性スリーブ１０のスリット３内に挿入することによ
シ弾性スリーブ１０の回転を防止するものである。Another example of means for preventing rotation of the elastic sleeve is shown in FIGS. 6 to 8. FIG. 6 shows a projection 11 that fits into the slit 3 of the elastic sleeve 10 and is formed in the shape of a rail along the axial direction. The protrusion 11 is constituted by a square bar or a round bar, and its length may span the entire length of the adapter 1 or may be short. FIG. 7 shows the pin 12 protruding from the inner surface of the adapter l.
This bottle 12 is inserted into the slit 3 of the elastic sleeve 10.
By inserting the elastic sleeve 10 into the inside, the elastic sleeve 10 is prevented from rotating. FIG. 8 shows a dowel 13 that is punched out from the inner surface of the adapter 1 using a punch or the like.
is inserted into the slit 3 of the elastic sleeve 10 to prevent the elastic sleeve 10 from rotating.

（７）発明の詳細 な説明したように、不発明に係る元コネクタはアダプタ
内での弾性スリーブの回転が防止されるため弾性スリー
ブのスリットの位置は光ファイバを保持したフェルール
に対し常に一定の位置に配置される。従って、コネクタ
の結合損失は常に一定に保たれ、結合の再現性が高く安
定したブＣ機能素子の動作が得られる。特に第３図に示
すような非円筒形状のフェルールに対してはスリットの
位ｔδ変化による結合損失の変化鍬が太きいため不発明
の効果は顕著なものと疫る。(7) As described in detail of the invention, since the original connector according to the invention prevents the elastic sleeve from rotating within the adapter, the position of the slit of the elastic sleeve is always constant relative to the ferrule holding the optical fiber. placed in position. Therefore, the coupling loss of the connector is always kept constant, and stable operation of the BCU functional element with high coupling reproducibility is obtained. In particular, for a non-cylindrical ferrule as shown in FIG. 3, the effect of the invention is significant because the coupling loss changes due to the change in the slit position tδ.

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

第１図は従来の光コネクタ受部の軸方向断面図、第２図
は従来の弾性スリーブの濶視図、第３図はフェルールの
一例の前祝図、第４図は本発明に係る光コネクタ要部の
軸方向断面図、第５図は第４図で用いた弾性スリーブの
前祝図、第６図から鎮８図１では各々本発明（に係る光
コネクタ要部の横断面図である。 ｌ・・・アダプタ、２，７．１０・・・弾性スリーブ、
３°・・スリット、４・・・フェルール、８・・・スト
ッパ、９・・・切欠き段差部、１１・・・突条、１２・
・・ピン、１３・・・ダボ。 第　１図 第　３図 ８４図 第２図 第５図Fig. 1 is an axial cross-sectional view of a conventional optical connector receiving part, Fig. 2 is a perspective view of a conventional elastic sleeve, Fig. 3 is a front view of an example of a ferrule, and Fig. 4 is an optical connector according to the present invention. FIG. 5 is a front view of the elastic sleeve used in FIG. 4, and FIGS. Yes. l...adapter, 2,7.10...elastic sleeve,
3°...Slit, 4...Ferrule, 8...Stopper, 9...Notch step, 11...Protrusion, 12...
...Pin, 13...Dowel. Figure 1 Figure 3 Figure 84 Figure 2 Figure 5

Claims (1)

【特許請求の範囲】 １、　円筒内周面を有するアダプタ内に、軸方向顛スリ
ットを有する弾性スリーブを嵌挿し、該弾性スリーブ内
で一対の光フアイバ端面同士を対向させて結合する元コ
ネクタにおいて、上記弾性スリーブの回転防止手段を具
備したことを特徴とする元コネクタ。 ２、特許請求の範囲第１項記載の光コネクタにおいて、
上記弾性スリーブ端部に切欠き段差部を形成し、該段差
部に係合するストソノ−Ｐを上記アダプタ内面に固定し
て上記回転防止手段を構成したことを特徴とする光コネ
クタ。 ３、特許請求の範囲第１項記載の光コネクタにおいて、
上記弾性スリーブのスリット内に挿入するための突起を
上記アダプタ内面に設けて上記回転防止手段を構成した
ことを特徴とする光コネクタ。[Claims] 1. An original connector in which an elastic sleeve having an axial slit is inserted into an adapter having a cylindrical inner circumferential surface, and the end surfaces of a pair of optical fibers are opposed and connected within the elastic sleeve. , a former connector characterized by comprising means for preventing rotation of the elastic sleeve. 2. In the optical connector according to claim 1,
An optical connector characterized in that a cutout step is formed at the end of the elastic sleeve, and a stronometer P that engages with the step is fixed to the inner surface of the adapter to constitute the rotation prevention means. 3. In the optical connector according to claim 1,
An optical connector characterized in that the rotation prevention means is constituted by providing a protrusion on the inner surface of the adapter for insertion into the slit of the elastic sleeve.
JP22207482A 1982-12-20 1982-12-20 Optical connector Granted JPS59125706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22207482A JPS59125706A (en) 1982-12-20 1982-12-20 Optical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22207482A JPS59125706A (en) 1982-12-20 1982-12-20 Optical connector

Publications (2)

Publication Number Publication Date
JPS59125706A true JPS59125706A (en) 1984-07-20
JPH0356447B2 JPH0356447B2 (en) 1991-08-28

Family

ID=16776706

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22207482A Granted JPS59125706A (en) 1982-12-20 1982-12-20 Optical connector

Country Status (1)

Country Link
JP (1) JPS59125706A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112309U (en) * 1984-12-25 1986-07-16
JPS6232407A (en) * 1985-08-06 1987-02-12 Seiko Giken:Kk Sleeve adapter for optical connector
JPS6230211U (en) * 1985-08-09 1987-02-23
JPH0233110A (en) * 1988-07-22 1990-02-02 Nippon Telegr & Teleph Corp <Ntt> Optical connector
US5588079A (en) * 1995-02-17 1996-12-24 Nec Corporation Optical connector
JP2005338647A (en) * 2004-05-28 2005-12-08 Kyocera Corp Optical receptacle and method for measuring connection loss
WO2015111413A1 (en) 2014-01-24 2015-07-30 オリンパス株式会社 Optical fiber connection adapter and endoscope device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145650A (en) * 1977-05-24 1978-12-19 Siemens Ag Light guide plug joint device screwing to screw axis and radius direction
JPS55130509A (en) * 1979-03-28 1980-10-09 Ibm Hollow connector
JPS57136914U (en) * 1981-02-17 1982-08-26

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53145650A (en) * 1977-05-24 1978-12-19 Siemens Ag Light guide plug joint device screwing to screw axis and radius direction
JPS55130509A (en) * 1979-03-28 1980-10-09 Ibm Hollow connector
JPS57136914U (en) * 1981-02-17 1982-08-26

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61112309U (en) * 1984-12-25 1986-07-16
JPS6232407A (en) * 1985-08-06 1987-02-12 Seiko Giken:Kk Sleeve adapter for optical connector
JPS6230211U (en) * 1985-08-09 1987-02-23
JPH0233110A (en) * 1988-07-22 1990-02-02 Nippon Telegr & Teleph Corp <Ntt> Optical connector
US5588079A (en) * 1995-02-17 1996-12-24 Nec Corporation Optical connector
JP2005338647A (en) * 2004-05-28 2005-12-08 Kyocera Corp Optical receptacle and method for measuring connection loss
WO2015111413A1 (en) 2014-01-24 2015-07-30 オリンパス株式会社 Optical fiber connection adapter and endoscope device

Also Published As

Publication number Publication date
JPH0356447B2 (en) 1991-08-28

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