JPS6177026A - Connector for optical fiber - Google Patents

Connector for optical fiber

Info

Publication number
JPS6177026A
JPS6177026A JP19994684A JP19994684A JPS6177026A JP S6177026 A JPS6177026 A JP S6177026A JP 19994684 A JP19994684 A JP 19994684A JP 19994684 A JP19994684 A JP 19994684A JP S6177026 A JPS6177026 A JP S6177026A
Authority
JP
Japan
Prior art keywords
light
optical fiber
face
side end
plug
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
JP19994684A
Other languages
Japanese (ja)
Inventor
Michihiro Inamori
稲森　満弘
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP19994684A priority Critical patent/JPS6177026A/en
Publication of JPS6177026A publication Critical patent/JPS6177026A/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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4202—Packages, e.g. shape, construction, internal or external details for coupling an active element with fibres without intermediate optical elements, e.g. fibres with plane ends, fibres with shaped ends, bundles
    • 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
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/421—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical component consisting of a short length of fibre, e.g. fibre stub

Abstract

PURPOSE:To make it unnecessary to control the output of a light emitting element even if the transmission distance is somewhat varied, by controlling freely the length between the light projection-side end face and the light reception-side end face. CONSTITUTION:An optical fiber 1 is held by a plug 2, and this plug 2 is coupled freely attachably and detachably to a receptacle 4 provided with a light emitting element 3. An optical fiber 6 for introduction is held in the front end part of the plug 2, and the light reception-side end face of the optical fiber 1 for transmission and the light projection-side end face of the optical fiber 6 for introduction face each other with a gap 5 between them in the plug 2. The plug 2 is coupled to the receptacle 4, and the light reception-side end face of the optical fiber 6 for introduction faces the light emitting element 3 in this state, and the light radiated from the light emitting element 3 is introduced to the optical fiber 6 for introduction. Rays having narrow incidence angles of this light are discharged to the outside without being introduced to the optical fiber 1 by the gap 5.

Description

【発明の詳細な説明】 １技南分野１ 本発明は光ファイバー用コネクタ、さらに詳しくは、発
光素子や受光素子のような光素子と光ファイバー、ある
いは光ファイバー同士を光学的に結合する先ファイバー
用コネクタに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field 1 of the Invention The present invention relates to an optical fiber connector, and more particularly, to a fiber end connector for optically coupling an optical element such as a light emitting element or a light receiving element to an optical fiber, or optical fibers to each other. It is something.

［昔最枝術１ 一般に尤７Ｔイバーを用ｂ・て光を伝達する場合に尤フ
ァイバー中を（へ送される光は第・１図−二示すように
、光ファ・イバー１の周面で反射を繰ｊ）返すらのて゛
あって、反射の際の入射角の小さい光はど反則回数か多
くなり急速に：減衰するちのて゛ある。[Katsu Saibashi Technique 1 Generally, when using a 7T fiber to transmit light, the light transmitted through the fiber is transmitted to the circumferential surface of the optical fiber 1, as shown in Figure 1-2. Light that is reflected at a small angle of incidence during reflection increases the number of times it is reflected and rapidly attenuates.

すなわち、第４図中人射角θ１は入射角θ２よりら小さ
いものとすると、入射角θ、の危は第５図（ａ）のよう
に、９、速に：成製し、入射角θ、の光は第５図（Ｉ〕
）のよう（こゆっくりとｊ減衰する。したかって、１云
送距碓と１云達尤量との関係は第５図（ｃ）のように（
伝送距離か短い部分では急速に減衰し、伝送距離か遠く
なるに従って次第に援やかにｉ減衰するのであ＼る。こ
のため、受光素子での受光度１１ヒレベルか第６図に示
すＡＬとＡ。どの間であるとすると、伝送距離か異なれ
ば発光素子３の出力を調布することが必要になる。従来
は発光素子３を駆動する回路の出力を調節していたちの
であって、伝送距離か少し異なると発光素子３の駆動回
路の出力調節をＰる必要かう１−じ而ｆｉ１１であった
。That is, assuming that the angle of incidence θ1 in FIG. The light of , is shown in Figure 5 (I)
), as shown in Figure 5(c), j decays slowly. Therefore, the relationship between 1 yen delivery distance and 1 yen delivery likelihood is as shown in Figure 5 (c).
It attenuates rapidly over short transmission distances, and as the transmission distance increases, it attenuates more gradually. Therefore, the light receiving intensity at the light receiving element is 11 high level, or AL and A shown in FIG. If the transmission distance is different, it is necessary to adjust the output of the light emitting element 3. Conventionally, the output of the circuit driving the light emitting element 3 was adjusted, and if the transmission distance was slightly different, the output adjustment of the driving circuit of the light emitting element 3 had to be adjusted.

また、最適な発光光量を設定するには受光素子：二重る
受光光量を測定しながら発光光量を調節することか必要
であるから、遠く離れた発光側と受范測との２箇所で作
業を行なう必要があり、不便て゛あった。In addition, in order to set the optimal amount of emitted light, it is necessary to adjust the amount of emitted light while measuring the amount of light received by the light receiving element, so it is necessary to work in two locations, one on the emitting side and one on the receiving side, which are far apart. It was inconvenient to do so.

［発明の１」的］ 本発明は」−述の点に鑑みて為されｔこちのであって、
その主な目的とするところは、（伝送距離か゛多少異な
っていてら発光素子の駆動回路の出力を調節する必要か
ない光ファイバー用フネクタを提供することにあり、１
世の目的とするところは、受光素子−て゛の受光光量を
最適値に設定する作業が受光側のみで行なえるよっにし
た光ファイバー用フネクタを提供することにある。[Aspect 1 of the Invention] The present invention has been made in view of the above points, and comprises:
The main purpose is to provide an optical fiber connector that does not require adjusting the output of the driving circuit of the light emitting element even if the transmission distance is slightly different.
The object of the present invention is to provide an optical fiber connector in which the work of setting the amount of light received by a light receiving element to an optimum value can be performed only on the light receiving side.

［発明の開示１ 本発明においては、基本的に、投光側端面と受光側端面
とのうちのいずれが一方か臨むレセプタクルと、レセプ
タクルに着脱自在に結合されいずれか池力が臨むプラグ
とを備え、投光側端面と受光側端面との間の距離を調節
自在としたことにより、伝送距離が多少異なっていても
発光素子の出力調節か不要な光ファイバーが開示され乙
。[Disclosure of the Invention 1] The present invention basically comprises a receptacle in which either one of the light emitting side end face and the light receiving side end face faces, and a plug that is detachably coupled to the receptacle and faces either of the power sources. By making the distance between the light emitting side end face and the light receiving side end face freely adjustable, an optical fiber is disclosed that does not require adjustment of the output of the light emitting element even if the transmission distance is slightly different.

（実施例１） 実施例１においては、光ファイバー１はプラグ２に保持
されており、プラグ２は発光素子３を備えたレセプタク
ル４：こ着脱自在に結合される。プラグ２の先端部には
導入用光ファイバー６が保持されており、プラグ２内に
おいて伝送用の光ファイバー１の受光側端面と導入用光
ファイバー６の投光側端面とか互いにギヤ７プ５を介し
て離開した形で対向する。プラグ２をレセプタクル４に
結合した状態で導入用光ファイバー６の受光側端面は発
光素子３に相対向する形で密着し、発光素子３がら放射
された光か導入用光ファイバー６に導入される。しかる
に、発光素子３から導入用光ファイバー（３に導入され
た光のうち入射角（θ１くθ２）の小さい光はギヤング
５により光ファイバー１に導入されることなく外に放出
され、この光は光ファイバー１内を伝送されないもので
ある。すなわち、入射角θ１の小さい光はプラグ２内で
減衰し光ファイバー１内を１云送されないものであるか
ら、入射角θ、の大きい光のみか光ファイバー１内を伝
送さ・れることになり、第２図に示すように、光量の滅
裂率か小さくなるらのであり、１云送距離の相当：こ広
いｊへ囲に亘って光量を受光素子の受光レベルの範囲内
に保つことかで゛きるのである。したかって、伝送距離
が変化しても発光素子３を駆動する駆動回路の出力調節
か殆ど１；蒙となるのである。(Example 1) In Example 1, an optical fiber 1 is held by a plug 2, and the plug 2 is detachably coupled to a receptacle 4 provided with a light emitting element 3. The leading-in optical fiber 6 is held at the tip of the plug 2, and within the plug 2, the light-receiving side end face of the transmitting optical fiber 1 and the light-emitting side end face of the leading-in optical fiber 6 are separated from each other via a gear 7 and a plug 5. to face each other in a similar manner. With the plug 2 connected to the receptacle 4, the light-receiving side end face of the introducing optical fiber 6 is brought into close contact with the light emitting element 3 in a manner opposite to it, and the light emitted from the light emitting element 3 is introduced into the introducing optical fiber 6. However, among the light introduced into the introduction optical fiber (3) from the light emitting element 3, the light with a small incident angle (θ1 × θ2) is emitted by the gearing 5 to the outside without being introduced into the optical fiber 1. In other words, since light with a small incident angle θ1 is attenuated within the plug 2 and is not transmitted through the optical fiber 1, only light with a large incident angle θ is transmitted through the optical fiber 1. As shown in Figure 2, the decay rate of the light intensity decreases, and the light intensity is reduced to the level of the light receiving element of the light receiving element over a distance corresponding to 1 inch of transmission distance. Therefore, even if the transmission distance changes, the output of the drive circuit that drives the light emitting element 3 is almost always adjusted.

（’Ｘ施例２） 実施例２では受光素子１１を備えたレセプタクル１２と
尤ファイバー１を保持するとともにレセプタクル１２に
着脱自在に接続されるプラグ１３とから構成された范フ
ァイバー用フネクタが開示される。プラグ１３は光７フ
イバー１を保持するフェルール１４と、レセプタクル１
２に着脱自在に接続される接続キャップ１５とから構成
され、フェルール１４の先端部内周面に形成された雌ね
じ部１６に接続キャップ１５の後端部外周面に形ｒ＆さ
れた雄ねじ部１７が螺合してフェルール１４と接続キャ
ップ１５とが進退自在に結合される。('X Example 2) In Example 2, a flexible connector for a flexible fiber is disclosed which is composed of a receptacle 12 equipped with a light-receiving element 11 and a plug 13 that holds the optical fiber 1 and is detachably connected to the receptacle 12. Ru. The plug 13 includes a ferrule 14 that holds the optical fiber 1 and a receptacle 1.
A male threaded part 17 formed on the outer circumferential surface of the rear end of the connecting cap 15 is screwed into a female threaded part 16 formed on the inner circumferential surface of the tip of the ferrule 14. At the same time, the ferrule 14 and the connection cap 15 are coupled together so that they can move forward and backward.

フェルールトｔの先端には光ファイバー１の先端面が露
出する。妾続キャップ１５の先端部には係合孔１８が形
成され、この係合孔１８かレセプタクル１２より突出す
る連結筒１９の外周面に突設された係合突起２０と係合
することにより、レセプタクル１２とプラグ１３とが結
合される。この状態で光ファイバー１の先端面である投
光側端面と受光素子１１の受光面である受光側端面とが
相対向しｊこ形に配設され、光ファイバー１を伝送され
た光が受光素：ｉ’−１１に上り受光されるのである。The tip end surface of the optical fiber 1 is exposed at the tip of the ferrule t. An engagement hole 18 is formed at the tip of the concubine cap 15, and when the engagement hole 18 engages with an engagement protrusion 20 protruding from the outer peripheral surface of a connecting cylinder 19 that protrudes from the receptacle 12, Receptacle 12 and plug 13 are coupled. In this state, the light-emitting side end surface, which is the tip surface of the optical fiber 1, and the light-receiving side end surface, which is the light-receiving surface of the light-receiving element 11, are arranged opposite to each other in a square shape, and the light transmitted through the optical fiber 1 is transmitted to the light-receiving element: The light goes up to i'-11 and is received.

ところで、フェルール１４と接続′キャップ１５とは進
退自在に結合され、接続キャップ１５はレセプタクル１
２に結合されているから、フェルール１．１を回ｌｌ：
ｚさせることに１９、光ファイバー１の先端面と受光素
子１１との間の距離が変化するものであり、光ファイバ
ー１の先端面と受光素子１１との間の距離を調節すれば
受光素子１１の受光′に、量を調」１士ることかで゛き
るものである。二のよっに受光素子１１の近傍において
受光光量の調節かて゛きるらハで゛あるから、受光光量
を最適値に設定−「る作業を１箇所で・行なえるもので
あり、）を業か７“ｒ易になるもので゛ある。また、調
節代能かプラグ１３（こ設けられているものであるから
、レセプタクル１２は従来のらのか］重用で外、レセプ
タクル１２の変更か不要であるから、経済的である。By the way, the ferrule 14 and the connection cap 15 are coupled together so that they can move forward and backward, and the connection cap 15 is attached to the receptacle 1.
Since it is connected to 2, turn the ferrule 1.1:
19, the distance between the tip surface of the optical fiber 1 and the light receiving element 11 changes, and by adjusting the distance between the tip surface of the optical fiber 1 and the light receiving element 11, the light receiving element 11 changes. All you have to do is adjust the amount accordingly. As mentioned above, it is not possible to adjust the amount of received light near the light receiving element 11, so it is possible to set the amount of received light to the optimum value - ``This work can be done in one place''. “There are things that make it easier. In addition, the adjustment plug 13 (since it is provided, the receptacle 12 is not the same as the conventional one) is required, and there is no need to change the receptacle 12, so it is economical.

［発明の効果１ 本発明は上述のように、投光ｌ１ｌｌｌ′４Ｊ面と受光
側端面との開の距離を調節自在としているので、発光素
子の近傍で投光側端面と受光側端面との開の距離を調ｆ
Ｉ？ｉすることにより、伝送距離に対する減衰率か大き
い入射角の小さい光を発光素子の近傍で減衰させ、光フ
ァイバー中に減衰率が小さい入射角の天外な光のみを導
入することができるものであり、その結果、伝送距離が
多少異なっていても発光素子の駆動回路の出力を調節す
る必要がないという利点を有する。また、投光側端面と
受光側端面とのうちのいずれか一方が臨むレセプタクル
と、レセプタクルに着脱自在に結合されいずれか　　　
　　　　。[Effect of the Invention 1] As described above, the present invention allows the distance between the light emitting side end face and the light receiving side end face to be adjusted freely, so that the distance between the light emitting side end face and the light receiving side end face is adjusted in the vicinity of the light emitting element. Adjust the opening distance f
I? By doing so, it is possible to attenuate light with a small angle of incidence with a large attenuation rate relative to the transmission distance in the vicinity of the light emitting element, and to introduce only extraordinary light with a small angle of incidence with a small attenuation rate into the optical fiber. As a result, there is an advantage that there is no need to adjust the output of the driving circuit for the light emitting element even if the transmission distance is slightly different. In addition, a receptacle facing either one of the light emitting side end face and the light receiving side end face, and a receptacle that is removably connected to the receptacle, and
.

能力か臨むプラグとを備え、プラグが光ファイバーを固
定してその先端に光ファイバーの先端面を露出させるフ
ェルールと、フェルールの先端部に進退自在に結合され
るとともにレセプタクルに着脱可能な接続キャップとか
ら構成されたちのにおいては、レセプタクルに結合され
た接続キャップとフェルールとを進退させることにより
光７フイバーの先端面である投光側端面と受光素子の受
光面で・ある受光側端面との間の距離か調節できるもの
であり、その結果、受光素子での受光光量を最適値に設
定する座業が受光側のみて行なえるらのであり、受光光
量の調節作業が容易になるという利点を有する。A ferrule that fixes the optical fiber and exposes the end surface of the optical fiber at its tip, and a connection cap that is coupled to the tip of the ferrule so that it can move forward and backward, and that can be attached to and detached from the receptacle. In our system, by moving the connection cap and ferrule connected to the receptacle back and forth, we can change the distance between the light-emitting side end surface, which is the tip surface of the optical fiber 7, and the light-receiving side end surface, which is the light-receiving surface of the light-receiving element. As a result, the task of setting the amount of light received by the light receiving element to an optimum value can be performed only on the light receiving side, which has the advantage that the work of adjusting the amount of light received is facilitated.

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

第１図は本発明の実施例１を示す概略断面図、第２図は
同」―の動作説明図、第３図は本発明の実施例２を示す
、概略断面図、第、１図は従来例を示す概略断面図、第
５図は（、）〜（ｃ）はそれぞれ同上の動作説明図、第
６図は従来例の問題点を示す動作説明図で・ある。 １は光ファイバー、２はプラグ、３は発光素子、・ｔは
レセプタクル、５はギヤング、６は導入用范ファイバー
、１１は受光素子、１２はレセプタクル、１：）はプラ
グ、１４はフェルール、１５は接続キャップ、１Ｇは雌
ねじ部、１７は雄ねじ部である。 代理入　弁理士　石　１）長　七 第１図 第２図1 is a schematic sectional view showing the first embodiment of the present invention, FIG. 2 is an explanatory diagram of the same operation, and FIG. 3 is a schematic sectional view showing the second embodiment of the present invention. FIG. 5 is a schematic cross-sectional view showing a conventional example; FIGS. 1 is an optical fiber, 2 is a plug, 3 is a light emitting element, t is a receptacle, 5 is a guinea pig, 6 is an introduction fiber, 11 is a light receiving element, 12 is a receptacle, 1:) is a plug, 14 is a ferrule, 15 is In the connection cap, 1G is a female threaded portion and 17 is a male threaded portion. Acting Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 2

Claims (2)

【特許請求の範囲】[Claims] （１）発光素子および光ファイバーと、受光素子および
光ファイバーと、光ファイバー同士とのいずれかの１つ
の投光側端面と受光側端面とを相対向させて両者を光学
的に結合する光ファイバー用コネクタであって、投光側
端面と受光側端面との間の距離を調節自在としたことを
特徴とする光ファイバー用コネクタ。(1) An optical fiber connector that optically connects a light-emitting element and an optical fiber, a light-receiving element and an optical fiber, and optical fibers by arranging the light-emitting side end face and the light-receiving end face of each optical fiber to face each other. An optical fiber connector characterized in that the distance between the light emitting side end face and the light receiving side end face is adjustable. （２）投光側端面と受光側端面とのうちのいずれか一方
が臨むレセプタクルと、レセプタクルに着脱自在に結合
されいずれか他方が臨むプラグとを備え、プラグが光フ
ァイバーを固定してその先端に光ファイバーの先端面を
露出させるフェルールと、フェルールの先端部に進退自
在に結合されるとともにレセプタクルに着脱可能な接続
キャップとから構成されたことを特徴とする特許請求の
範囲第１項記載の光ファイバー用コネクタ。(2) A receptacle that faces one of the light-emitting end face and the light-receiving end face, and a plug that is removably connected to the receptacle and faces the other, and the plug fixes the optical fiber to the tip of the receptacle. The optical fiber according to claim 1, comprising a ferrule that exposes the tip surface of the optical fiber, and a connection cap that is coupled to the tip of the ferrule so as to be freely retractable and can be attached to and detached from the receptacle. connector.
JP19994684A 1984-09-25 1984-09-25 Connector for optical fiber Pending JPS6177026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19994684A JPS6177026A (en) 1984-09-25 1984-09-25 Connector for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19994684A JPS6177026A (en) 1984-09-25 1984-09-25 Connector for optical fiber

Publications (1)

Publication Number Publication Date
JPS6177026A true JPS6177026A (en) 1986-04-19

Family

ID=16416222

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19994684A Pending JPS6177026A (en) 1984-09-25 1984-09-25 Connector for optical fiber

Country Status (1)

Country Link
JP (1) JPS6177026A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660763A1 (en) * 1990-04-09 1991-10-11 Wandel & Goltermann OPTICAL CONNECTION FOR OPTICAL MEASURING DEVICES.
JPH0566431U (en) * 1992-02-19 1993-09-03 シャープ株式会社 Outdoor unit of indoor / outdoor separation type air conditioner

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660763A1 (en) * 1990-04-09 1991-10-11 Wandel & Goltermann OPTICAL CONNECTION FOR OPTICAL MEASURING DEVICES.
JPH0566431U (en) * 1992-02-19 1993-09-03 シャープ株式会社 Outdoor unit of indoor / outdoor separation type air conditioner

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