JPS6163805A - Production of optical connector and ferrule for optical connector - Google Patents
Production of optical connector and ferrule for optical connectorInfo
- Publication number
- JPS6163805A JPS6163805A JP18613584A JP18613584A JPS6163805A JP S6163805 A JPS6163805 A JP S6163805A JP 18613584 A JP18613584 A JP 18613584A JP 18613584 A JP18613584 A JP 18613584A JP S6163805 A JPS6163805 A JP S6163805A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- ferrule
- metal pipe
- mold
- molding
- 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
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
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
-
- 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
- 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
- G02B6/389—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
-
- 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)
Abstract
Description
【発明の詳細な説明】
[技術分野コ
本発明は、ンングルモードファイバ用に代表される、詩
精度な位置決めが要求される光コネクタおよび同フェル
ールの製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an optical connector that requires highly accurate positioning, typically for use in single-mode fibers, and a method for manufacturing the same ferrule.
[従来技術と問題点コ
第8図に従来の光コネクタの一例を断面図で示す。図に
おいて、1は被覆を有する光ファイバ心線を示し、2は
先端の被覆を除去した光ファイバ裸線(ガラス部)を示
している。3はメタルフェルールを示し、lOはそのつ
ば部であり、メタルフェルール3には被覆を有する光フ
ァイバ心線1およびその先につながる、被覆を除去した
光ファイバ1宋線2をI1p通させる、大径の孔5′と
これにっながる微細孔5が形成され、前記孔に先端の被
覆を除去した光ファイバ心線1が挿通され、ilii記
光ファイバ裸線2は微細孔5におさまり、被覆を有す、
る光ファイバ心線1は孔中の段部で止まり、光ファイバ
心線1と孔5′,5とが作る空隙には接着剤4が充填さ
れ、光ファイバ心線lはメタルフェルール3に固着され
る。メタルフェルール3の端面より突出する光ファイバ
裸線2を切断研磨して端面をメタルフェルール3の端面
と同一面をなすように仕上げれば、光コネクタ用の光フ
ァイバを備えるメタルフェルールができあがる。[Prior Art and Problems] FIG. 8 shows a cross-sectional view of an example of a conventional optical connector. In the figure, 1 indicates a coated optical fiber, and 2 indicates a bare optical fiber (glass portion) from which the coating is removed from the tip. 3 indicates a metal ferrule, lO is its brim, and the metal ferrule 3 has a coated optical fiber 1 and an optical fiber 1 with the coating removed, which is connected to the tip of the Sung wire 2, passed through I1p. A diameter hole 5' and a fine hole 5 connected thereto are formed, the coated optical fiber 1 with the tip coating removed is inserted into the hole, and the bare optical fiber 2 described in iii is fitted into the fine hole 5. , having a coating,
The optical fiber core 1 stops at the step in the hole, and the gap created between the optical fiber core 1 and the holes 5' and 5 is filled with adhesive 4, and the optical fiber core l is fixed to the metal ferrule 3. be done. By cutting and polishing the bare optical fiber 2 protruding from the end surface of the metal ferrule 3 so that the end surface is flush with the end surface of the metal ferrule 3, a metal ferrule equipped with an optical fiber for an optical connector is completed.
゛ ところで、高精度光コネクタの一例としてンング
ルモードファイバ用コネクタの場合、シノグルモードフ
ァイバは、外径125μmに対してコア径IOμmと非
常に小さく、位置決め精度としてもlμm以下が要求さ
れる。例えば外径に対するファイバ孔径の偏心は、最大
でも1μm以下にしなくては、1 dB以下の結合損失
を得ることは困難である。By the way, in the case of a single-mode fiber connector as an example of a high-precision optical connector, the sinoggle mode fiber has a very small core diameter of 10 μm compared to an outer diameter of 125 μm, and a positioning accuracy of 1 μm or less is required. For example, it is difficult to obtain a coupling loss of 1 dB or less unless the eccentricity of the fiber hole diameter with respect to the outer diameter is at most 1 μm or less.
更に、偏心を1μm以下に抑えたとしても、レングルモ
ールドファイバのクラノドに対するコアの偏心が1 a
m以上あれば、結果的には1dB以上の結合損失が生ず
る。その為、通常は、tTij述のような光ファイバを
備えるメタルフェルールにおいてハ、光ファイバ裸線の
コア部を中心にフェルール外径を研削加工しているが、
このような加工方式では、量産性に乏しく、高価になる
という欠点がある。Furthermore, even if the eccentricity is suppressed to 1 μm or less, the eccentricity of the core with respect to the crannode of the L'Engle molded fiber is 1 a
If it is more than m, a coupling loss of 1 dB or more will result. For this reason, normally, in a metal ferrule equipped with an optical fiber as described above, the outer diameter of the ferrule is ground around the core of the bare optical fiber.
Such a processing method has the drawbacks of poor mass productivity and high cost.
[発明の目的.構成コ
本発明は、前述のような欠点を克服し、高精度が要求さ
れる光コネクタと111f記光フネクタ用フエルールの
生産効率の極めて高い製造方法を提供するものである。[Object of the invention. The present invention overcomes the above-mentioned drawbacks and provides a highly efficient manufacturing method for optical connectors that require high precision and ferrules for 111F optical connectors.
本発明は端的に云えば、金型中に、一郎被覆を除去し、
光ファイバ裸線を露出させた光ファイバ心線を配置し、
前記光ファイバ裸線を境界として、二個のフェルールを
モールド樹脂により成形するとともに、嵌合位置決め用
の連結用ピンの孔部を形成し、成形後二つのフェルール
に分離し、実際の光接続時には、前記分離したフェルー
ルをさきの成形時における両フェルールの相互位置を維
持したままの状態で接続できるように構成したものであ
って、接続における光ファイバのコア同志の芯あわせを
極めて簡単にしたものである。To put it simply, the present invention removes the Ichiro coating in the mold,
Arrange the optical fiber core with the bare optical fiber exposed,
Two ferrules are molded using mold resin with the bare optical fiber as a boundary, and a hole for a connecting pin for fitting positioning is formed. After molding, the two ferrules are separated and used for actual optical connection. , the separated ferrules are configured so that they can be connected while maintaining the mutual positions of both ferrules during the previous molding, and it is extremely easy to align the cores of the optical fibers during connection. It is.
以下図面に示す実施例により本発明を説明する。The present invention will be explained below with reference to embodiments shown in the drawings.
以下図において第8図と同一部分には同一符号が用いら
れる。In the following figures, the same reference numerals are used for the same parts as in FIG. 8.
ml図(イ)は実施例を長さ方向断面図示し、同(r+
)は正面図である。The ml diagram (a) shows a cross-sectional view of the example in the longitudinal direction, and the same (r+
) is a front view.
17はフェルール全体を示す。11は金属パイプ、1G
はフェルール+7のつば部、9はつば部10に形成され
た孔部であり、光ファイバ心線1の被覆を一郎除去して
、光ファイバ裸線2を露出させ、前記金属パイプI1に
挿通させた状態で、モールド樹脂8によって一体に成形
されたものである。従って、孔部9を訂するつば部10
は金属パイプ11と一体に、且つ金属パイプHの内側は
前記モールド樹脂8で充填されs il+記光ファイバ
株線2は一定位置で固定される。17 indicates the entire ferrule. 11 is a metal pipe, 1G
9 is a flange of the ferrule +7, and 9 is a hole formed in the flange 10. The coating of the optical fiber core 1 is removed to expose the bare optical fiber 2, which is inserted into the metal pipe I1. It is integrally molded with mold resin 8 in this state. Therefore, the collar 10 that corrects the hole 9
is integrated with the metal pipe 11, and the inside of the metal pipe H is filled with the molding resin 8, so that the optical fiber stock 2 is fixed at a fixed position.
このようなフェルールの製造については、後に詳述する
が、同時に光ファイバ裸線2を』(通にして成形された
光ファイバを備えるフェルールを対として、スリーブ7
の両端より挿入し、嵌合させ、両フェルール17の端面
を接合した状態とし、前記両フェルール17のつば部1
0に形成した孔9に連結用ピン6を通して、回転方向の
位置決めを行って、光接続部を+lが成する。The manufacturing of such a ferrule will be described in detail later, but at the same time, a pair of ferrules each having an optical fiber formed by passing the bare optical fiber 2 through the sleeve 7
are inserted from both ends of the ferrules 17 and fitted, so that the end surfaces of both ferrules 17 are joined.
The connecting pin 6 is passed through the hole 9 formed at 0, and positioning in the rotational direction is performed to form an optical connection section.
このようにして構成された光接続部は第2図(イ)、(
ロ)に示すように、フェルール17間を軸方向に加圧し
て固定するため、固定用ハウジング12を有している。The optical connection section configured in this way is shown in Fig. 2 (A) and (
As shown in (b), a fixing housing 12 is provided in order to pressurize and fix the ferrules 17 in the axial direction.
固定用ハウジング12はフェルール17を軸方向に加圧
するタイプのものであればよく、図示のような金1i1
fililEスプリングによるつば部1Gの抑圧タイプ
のものでなく、複数の部品よりなる/%ウンング部材を
用いても問題はなく、フェルール17の上下等の固定方
向にも前述のような固定手段を採ることができる。The fixing housing 12 may be of a type that presses the ferrule 17 in the axial direction, and may be made of gold 1i1 as shown in the figure.
There is no problem in using a hinge member made of multiple parts instead of the type that suppresses the flange 1G using a fililE spring, and the above-mentioned fixing means can also be used in the fixing directions such as the top and bottom of the ferrule 17. I can do it.
次に本発明の製造方法について説明する。第3図は本発
明実施の説明図である。I3は成形用の金型(上面図)
であり、例えば長さ方向に2つ割りの部分からなり、す
でに説明した第1図に示すような、同時に、二個のフェ
ルールを成形できる型面を具えている。なお金型13の
ルロ、ランナー等は示していない。Next, the manufacturing method of the present invention will be explained. FIG. 3 is an explanatory diagram of the implementation of the present invention. I3 is the mold for molding (top view)
For example, it is divided into two parts in the length direction, and has a mold surface capable of molding two ferrules at the same time, as shown in FIG. 1, which has already been described. The luro, runner, etc. of money mold 13 are not shown.
被覆を除去し、その光ファイパン東線2を 露出させた
光ファイバ心線1を二本の金属パイプ11に通し、両金
属パイプ11の間で、+]ii記裸線2を例えば2つ、
や1りの固定部材14を介在させ、+lii記固定部材
14に両金属パイプIIの端面を接合した状態で、前記
裸線2およびこれにつながる被覆を口する光ファイバ心
線lが、前記両金属パイプ11の中心軸線上にあり、光
ファイバ心線1の余部は金型13の外に延びるように、
金型面に配置するとともに、第1図においてつば部IQ
となる畠ζ分に長さ方向の孔部9を設けるため、対応金
型面部分に金属パイプ11と並行に、成形用連結ピン1
5を配置し、金型締めを行い、モールド樹脂8、例えば
エポキ7樹脂により一括成形する。The optical fiber core 1 with the optical fiber pan east wire 2 exposed by removing the coating is passed through two metal pipes 11, and between the two metal pipes 11, for example, two bare wires 2,
With one or more fixing members 14 interposed and the end faces of both metal pipes II joined to the +lii fixing member 14, the optical fiber core l connecting the bare wire 2 and the coating connected thereto is attached to the two It is on the central axis of the metal pipe 11, and the remaining part of the optical fiber core 1 extends outside the mold 13.
In addition to placing it on the mold surface, the collar IQ in Fig.
In order to provide a longitudinal hole 9 in the field ζ, a connecting pin 1 for forming is inserted parallel to the metal pipe 11 on the corresponding mold surface.
5 is placed, the mold is tightened, and the molding resin 8, for example, epoxy resin 7, is used for batch molding.
これによって、第1図に示すようなつば部IOに金属パ
イプ11が一体となり、同時につば部IOに孔部9を仔
し、金属バイブ11内が、つば部10と同様モールド樹
脂8で充I0され、全体(成形用連結ピノ15を含む)
が一体となった2個の、光ファイバ心線を備えるフェル
ールの一括成形体が得られる。As a result, the metal pipe 11 is integrated with the collar IO as shown in FIG. and the whole (including the connecting pinot 15 for molding)
A one-shot molded body of two ferrules including optical fiber cores is obtained.
その後一括成形体を金型13から取り出し、成形用連結
ピン15を引き抜き、被覆除去部、すなわち一括成形体
の中央m<で、切断等により分割し、裸線2の端面を研
磨する。Thereafter, the mass molded body is taken out from the mold 13, the forming connecting pin 15 is pulled out, and the end face of the bare wire 2 is polished by cutting or the like at the coating removal portion, that is, at the center m< of the mass molded body.
これによって光接続に用いられる一対のフェルールが同
時に作られる。In this way, a pair of ferrules used for optical connections are simultaneously made.
l]ii記製造工程においては、被覆を有する光ファイ
バ心線1の被覆を一部除去し、露出させた裸線2を備え
るものについての実施について説明したが、取扱い上、
第4図に示すように、一端の被覆を除去し、裸線2を露
出させた二本の光ファイバ1の裸線2の部分を融着した
融召接続点IGを有する光ファイバ心線1を使用しても
よい。l] In the manufacturing process described in ii, a case has been described in which the coating of the coated optical fiber core 1 is partially removed and the bare wire 2 is exposed.
As shown in FIG. 4, an optical fiber core 1 has a fusion splice point IG in which the bare wires 2 of two optical fibers 1 are fused together by removing the coating at one end and exposing the bare wires 2. may be used.
また第5図(イ)、(ロ)に示すように金属パイプ11
の一部、・例えば内面または内外面に凹凸またはねじを
付けた凹曲部を佇する金属パイプを用いれば、モールド
樹脂8とのtM Zr而面を増大し、モールド樹脂8と
金属パイプ1!の剥離を防止することができる。In addition, as shown in FIGS. 5(a) and 5(b), the metal pipe 11
For example, if a metal pipe with an uneven or threaded concave portion on its inner or outer surface is used, the tM Zr relationship between the mold resin 8 and the metal pipe 1 can be increased, and the mold resin 8 and metal pipe 1! peeling can be prevented.
以上は単心の光ファイバ心線を対象としたものであるが
、本発明は第6.7図に示すように多心の光ファイバ心
線に適用できることはいうまでもない。図はともに正面
図である。第6図に示すS心の場合、一部被覆を除去し
た光ファイバ心線1を前述の金型13と同様な金型を用
い、金属パイプ!Iに挿通させ、整列させ、モールド樹
脂8により一括成形すればよい。これによってでき」二
ったフェルールには回転方向位置決め川の孔部9が設け
られている。Although the above description is directed to a single-core optical fiber, it goes without saying that the present invention can be applied to a multi-core optical fiber as shown in FIG. 6.7. Both figures are front views. In the case of the S core shown in FIG. 6, the optical fiber core 1 with the coating partially removed is molded into a metal pipe using a mold similar to the mold 13 described above. They may be inserted through I, aligned, and collectively molded using mold resin 8. The resulting ferrule is provided with a hole 9 for rotational positioning.
上記第3図による本発明の実施については、つば部IO
と一体に成形される金属パイプ11を二本使用して、成
形するものについて説明したが、一部の被覆を除去し、
裸線2を露出させた光ファイバ心線lを一本の適当長さ
の金属パイプ11に挿通させ、前記光ファイバ心線1を
金属パイプ11の中心軸線に沿う方向に支持した状態で
、モールド樹脂8によって成形してもよい。この場合、
多心のものに同様適用できることはいうまでもない。Regarding the implementation of the present invention according to FIG. 3 above, the collar part IO
Although we have explained the molding using two metal pipes 11 that are integrally molded with the
The coated optical fiber l with the bare wire 2 exposed is inserted into a metal pipe 11 of an appropriate length, and with the coated optical fiber 1 supported in a direction along the central axis of the metal pipe 11, the coated optical fiber 1 is molded. It may also be molded using resin 8. in this case,
Needless to say, this can be similarly applied to multi-centered objects.
このようにして成形された□−一括成形体1);i記金
属パイプのあ分で切断により分割し、切断による金属パ
イプの端面の加工を行い、光ファイバPIlt+aの端
面をも仕上げて、光接続面を作る。□-Bulk molded body 1) formed in this way: The metal pipe described in i is divided by cutting, the end face of the metal pipe is processed by cutting, and the end face of the optical fiber PIlt+a is also finished. Create a connecting surface.
この場合もでき上った、光ファイバを備えるフェルール
の接続位置(回転方向)を精確に合わすように、各フェ
ルールのつば部に、ピンを嵌合させる孔部が成形時に設
けられることには変りはない。In this case as well, in order to accurately match the connection position (rotation direction) of the completed ferrule with the optical fiber, a hole into which the pin fits is provided in the collar of each ferrule during molding. There isn't.
次に本発明によるフェルールの一例の寸法・形状につい
て説明する。その形状は大略1図に示すとおりであるが
、フェルールのスリーブそう入部の外径は2.5wnφ
、フェルールのっぽ部は角形として構成され、つば部厚
みは6−■あり、孔部の径はl■嘗φである。また内面
ねじを設けた金属パイプがフェルールのスリーブへのそ
う入部をなしており、フェルール端面からはモールド樹
II!ff部分が突き出した形状となっている。このフ
ェルールのスリーブ嵌合部長さは約8龍である。なおつ
ば部寸法は約[i、5ssX4.5−霞である。またフ
エ!レール全19はI8龍である。Next, the dimensions and shape of an example of the ferrule according to the present invention will be explained. Its shape is roughly as shown in Figure 1, and the outer diameter of the sleeve insertion part of the ferrule is 2.5wnφ.
The tail of the ferrule is configured as a square, the thickness of the flange is 6 mm, and the diameter of the hole is 1 mm. In addition, a metal pipe with an internal thread forms the entry part into the ferrule sleeve, and from the end of the ferrule, the mold tree II! The ff portion has a protruding shape. The length of the sleeve fitting part of this ferrule is approximately 8 mm. Note that the dimensions of the brim portion are approximately [i, 5ssX4.5-haze. Hue again! All 19 rails are I8 Dragon.
製造に当っては、シングルモードファイバ心線を光モニ
ターしながら、第4図により説明した融着接続したもの
を使用した。このときの融40スは平均0.04dBで
ある。また被覆を除去した裸線部分の長さは約IO■−
である。光ファイバ心線には、すでに説明したように、
あらかじめ金属パイプを通しておき、金型にそれぞれセ
ットし、成形用連結ピンも同時にセットした。During manufacture, the single mode fiber core wire was fusion spliced as explained in FIG. 4 while being optically monitored. The average fusion rate at this time is 0.04 dB. Also, the length of the bare wire part with the covering removed is approximately IO■-
It is. As already explained, optical fiber cores include
The metal pipes were passed through them in advance, and each was set in the mold, and the connecting pin for molding was also set at the same time.
その後、金型締めをおこない、低圧成形可能なエポキシ
樹脂により一括成形した。成形圧zohg/ell”で
成形温度170℃、成形時間5分で完了する。After that, the mold was tightened and molded all at once using an epoxy resin that can be molded under low pressure. The molding process is completed in 5 minutes at a molding pressure of 170° C. and a molding pressure of 100 g/ell.
その後、金型から一括成形体を取り出し、成形用連結ピ
ンを引き抜き、フェルール成形中央部、すなわち、Fs
Ii!の融着接続部をはさみ込む形で2ケ所切断した後
、得られたフェルールの両端面の光ファイバ裸線の端面
をそれぞれ研aした。前記連結ピンは実際の光接続の際
に使用される連結用ピンより成形収縮率を考慮して、若
干大き目のものを使用している。得られたフェルールを
スリーブおよび連結用ピンを用いて結合させたときの結
合損失は総数20試料の平均で00s)dB、最大0.
87dBであった。After that, take out the molded body from the mold, pull out the connecting pin for molding, and press the central part of the ferrule molding, that is, Fs.
Ii! After cutting the ferrule at two places by sandwiching the fusion spliced portion, the end faces of the bare optical fibers on both end faces of the obtained ferrule were polished. The connecting pins are slightly larger than the connecting pins used in actual optical connections, taking into consideration the molding shrinkage rate. When the obtained ferrules were coupled using a sleeve and a connecting pin, the coupling loss was an average of 00s) dB for a total of 20 samples, and a maximum of 0.
It was 87dB.
この値は通常のマルチモードファイバコネクタと比較し
てもほぼ同程度であり、十分実用に供することができる
ものと理解されよう。なおスリーブとしては割りスリー
ブを使用したが、割のはいっていない精密スリーブを用
いることができる。This value is almost the same as that of a normal multimode fiber connector, and it can be understood that it can be put to practical use. Although a split sleeve is used as the sleeve, a precision sleeve without splits can be used.
またすでに述べたように、被覆除去部(?!!線の部分
)の構成として融着接続を利用したが、被覆の一部を除
去したものでもよい。Further, as already mentioned, although fusion splicing is used to construct the sheath removal portion (the wire portion), it is also possible to remove a portion of the sheath.
以上上としてシングルモードファイバラ用いた実施につ
いて説明したが、その他マルチモードファイバやすでに
若干触れた多心光ファイバ用のコネクタにも適用できる
ことは明らかである。Although the above description has been made of implementation using a single mode fiber optic, it is clear that the present invention can also be applied to connectors for other multimode fibers and multi-core optical fibers, which have already been briefly mentioned.
[効果]
以上説明したように、本発明では金属パイプに光ファイ
バ心線を挿通させ、光ファイバを共通とし、成形用連結
ピンを予め配して、一括成形体を作り、これをそれぞれ
光ファイバを備えた7エルールに切断0分割して一対の
7エルールを作うているので、前記フェルールをスリー
ブに嵌め、フェルールの孔alsL1に連結用ピンを通
せば、光ファイバを共通とした成形時とかわらぬ位置で
、光ファイバのコア部の精確な接合が可能となる。従っ
て従来のようなコア部を中心とするフェルール外径の研
削加工等を必要としなくなる。[Effect] As explained above, in the present invention, an optical fiber core wire is inserted into a metal pipe, a common optical fiber is used, and connecting pins for molding are arranged in advance to create a collective molded body, and each of the optical fibers is Since a pair of 7 errules are made by cutting and dividing into 7 errules with It is possible to precisely join the core portions of optical fibers at the same position. Therefore, it is no longer necessary to grind the outer diameter of the ferrule centering on the core part as in the conventional method.
また高精度が要求される光ファイバを備えたフェルール
を一対まとめて容易に樹脂成形によって制作することが
可能となるが、成形時間も短かい時間で完了し、著しく
生産性が向上するとともに、低価格化の光コネクタが実
現する。In addition, it is possible to easily produce pairs of ferrules with optical fibers that require high precision by resin molding, and the molding time can be completed in a short time, significantly improving productivity and reducing costs. Affordable optical connectors will become a reality.
またフェルールの形状としても、外周に金属パイプを何
しているため、外径の歩留り(外径の不揃)が全体樹脂
モールドフェルールより著しく向上するとともに、フェ
ルールの曲げ強度も向上し、平均8 kg以上確保でき
、金属パイプで形成されているため、脱む時の耐摩耗性
が殴れており、1000回脱青においても変動が±0.
2dB以下と、ンングルモードファイバコネクタとして
の結合再現性としては非常に優れた結果を得た。In addition, since the ferrule is shaped like a metal pipe on the outer periphery, the yield rate of the outer diameter (irregularity of outer diameter) is significantly improved compared to the entire resin molded ferrule, and the bending strength of the ferrule is also improved, with an average of 8. Since it is made of metal pipe, it has excellent abrasion resistance when removed, and even after removing it 1000 times, the variation is ±0.
The coupling reproducibility as a single mode fiber connector was 2 dB or less, which is an extremely excellent result.
光ファイバ心線を敵前接続し、−期成形(位置決め)し
た後、−結成形体を切断する工程においては、裸線固定
用部材を用いることにより、この位置に裸線の融着接続
部をセットすれば、これにより金属パイプ間の寸法を規
定し、成形後の切断により、かならず融?を接続部が除
去でき、フェルールに残存しない利点がある。After splicing the optical fibers and forming (positioning) them, in the process of cutting the formed body, the bare wire fixing member is used to set the bare wire fusion splice at this position. This allows you to define the dimensions between the metal pipes and ensure that they are melted by cutting after forming. This has the advantage that the connection part can be removed and does not remain on the ferrule.
二本の金属パイプを用いず一本の金属パイプを用いて一
括成形体を作れば、成型時の金型へのセットが容易とな
る。光ファイバ裸線を共通として一本の金属パイプ使用
により一括成形体を作り、これを光ファイバ裸線を共通
とする部分で切断しても金属パイプを二本使用したもの
と同効の一対のフェルールが得られることはいうまでも
ない。If a single metal pipe is used instead of two metal pipes to make a batch molded product, it will be easier to set it in a mold during molding. Even if you make a bulk molded body using one metal pipe with the bare optical fibers in common, and cut it at the part where the bare optical fibers are in common, a pair of metal pipes with the same effect as two metal pipes can be produced. Needless to say, a ferrule can be obtained.
第1図(イ)、(ロ)は本発明の光コネクタの一実施例
夕の加圧固定の一例゛を示す。
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
製造説明図である。
第4図は光ファイバ心線の被覆を除去した裸線面を形成
したものの一例を示す。
第6図、第7図は多心光ファイバ心線による本発明の実
施例を正面図で示す。
第8図は従来のメタルフェルールの一例を長さ方向断面
図で示す。
1・・・光ファイバ心線(被覆部)、2・・・光ファイ
バWiQ(ガラス沈)、6・・・連結用ピン、7・・・
スリーブ、8・・・モールド樹脂、9・・・孔部、!0
・・・つば部、11・・・会頭パイプ、 12・・・固
定用ハウジング、13・・・金型、 +4・・・光ファ
イバ裸線固定用部材、15・・・成形用連結ピン、・1
6・・・融着接続点。
大2図
實3図
π4図FIGS. 1A and 1B show an example of an embodiment of the optical connector according to the present invention, which is fixed under pressure. FIG. 3 is an explanatory diagram of manufacturing a ferrule provided with the optical fiber core of the present invention. FIG. 4 shows an example of a coated optical fiber having a bare wire surface formed by removing the coating. FIGS. 6 and 7 show front views of embodiments of the present invention using multi-core optical fibers. FIG. 8 shows an example of a conventional metal ferrule in a longitudinal sectional view. DESCRIPTION OF SYMBOLS 1... Optical fiber core wire (coated part), 2... Optical fiber WiQ (glass precipitated), 6... Connecting pin, 7...
Sleeve, 8...mold resin, 9...hole,! 0
...Brim portion, 11...Front pipe, 12...Fixing housing, 13...Mold, +4...Member for fixing bare optical fiber, 15...Connecting pin for molding,・1
6... Fusion splicing point. Large 2 diagrams, 3 diagrams, π 4 diagrams
Claims (7)
挿通させた金属パイプと成形用連結ピンとを金型にセッ
トし、モールド樹脂成形により形成した一括成形体を分
割した、光ファイバ心線を備える一対のフェルールの金
属パイプをスリーブに通して嵌合させ、前記成形用連結
ピンによって、フェルールつば部に形成された孔部に連
結用ピンを通し、前記嵌合されたフェルールの軸方向に
加圧するハウジング部材で結合することを特徴とする光
コネクタ。(1) A metal pipe into which a bare optical fiber core wire with a part of the coating has been removed and a connecting pin for molding are set in a mold, and a lump molded body formed by resin molding is divided. The metal pipes of a pair of ferrules each having a fiber core wire are passed through the sleeve and fitted together, and the connecting pin is passed through the hole formed in the ferrule collar using the forming connecting pin, and the fitted ferrule is inserted into the sleeve. An optical connector characterized by being connected by a housing member that applies pressure in the axial direction.
徴とする特許請求の範囲第1項記載の光コネクタ。(2) The optical connector according to claim 1, wherein the inner and outer surfaces of the metal pipe are partially uneven.
金属パイプに挿通させ、前記金属パイプを金型に配置し
、前記光ファイバ心線の余部は金型外に出るように配置
するとともに、前記金属パイプと並行に成形用連結ピン
を配置し、モールド樹脂によって金属パイプ内が前記モ
ールド樹脂によって充填され、二つのつば部と前記金属
パイプと光ファイバ心線および成形用連結ピンよりなる
一括成形体となし、該成形体を金型より取り出し、つば
部より前記成形用連結ピンを引き抜き、前記金属パイプ
の中央部で分割を行って、一対の光ファイバ心線を備え
るフェルールとなすことを特徴とする光コネクタ用フェ
ルールの製造方法。(3) Insert the optical fiber core wire into a bare wire by removing a part of the coating into a metal pipe, place the metal pipe in a mold, and make sure that the remaining part of the optical fiber core wire comes out of the mold. At the same time, a connecting pin for molding is placed in parallel with the metal pipe, and the inside of the metal pipe is filled with the molding resin, and the two flange parts, the metal pipe, the optical fiber core, and the connecting pin for molding are placed in parallel with the metal pipe. Take out the molded body from the mold, pull out the connecting pin for molding from the flange, and divide the metal pipe at the center to form a ferrule with a pair of optical fiber cores. A method for manufacturing a ferrule for an optical connector, characterized by:
請求の範囲第3項記載の光コネクタ用フェルールの製造
方法。(4) The method for manufacturing a ferrule for an optical connector according to claim 3, characterized in that two metal pipes are used.
請求の範囲第3項記載の光コネクタ用フェルールの製造
方法。(5) The method for manufacturing a ferrule for an optical connector according to claim 3, characterized in that a single metal pipe is used.
め一端の被覆を除去した二本の光ファイバ心線の裸線端
部を融着接続したものを用いることを特徴とする特許請
求の範囲第3〜第5項記載の光コネクタ用フェルールの
製造方法。(6) A patent claim characterized in that the optical fiber core wire to be inserted into the metal pipe is obtained by fusion splicing the bare ends of two optical fiber core wires, one end of which has been previously uncoated. A method for manufacturing a ferrule for an optical connector according to items 3 to 5.
とを特徴とする特許請求の範囲第6項記載の光コネクタ
用フェルールの製造方法。(7) A method for manufacturing a ferrule for an optical connector according to claim 6, which comprises inserting a multi-core optical fiber core through a metal pipe.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18613584A JPS6163805A (en) | 1984-09-04 | 1984-09-04 | Production of optical connector and ferrule for optical connector |
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 |
US06/788,404 US4708433A (en) | 1984-09-04 | 1985-09-04 | 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. |
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 |
---|---|---|---|
JP18613584A JPS6163805A (en) | 1984-09-04 | 1984-09-04 | Production of optical connector and ferrule for optical connector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6163805A true JPS6163805A (en) | 1986-04-02 |
JPH0536762B2 JPH0536762B2 (en) | 1993-05-31 |
Family
ID=16182982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18613584A Granted JPS6163805A (en) | 1984-09-04 | 1984-09-04 | Production of optical connector and ferrule for optical connector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6163805A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61155807U (en) * | 1984-11-21 | 1986-09-27 | ||
JPH0335204A (en) * | 1989-06-30 | 1991-02-15 | Tokai Rubber Ind Ltd | Production of connector for optical fiber |
-
1984
- 1984-09-04 JP JP18613584A patent/JPS6163805A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61155807U (en) * | 1984-11-21 | 1986-09-27 | ||
JPS6312323Y2 (en) * | 1984-11-21 | 1988-04-08 | ||
JPH0335204A (en) * | 1989-06-30 | 1991-02-15 | Tokai Rubber Ind Ltd | Production of connector for optical fiber |
Also Published As
Publication number | Publication date |
---|---|
JPH0536762B2 (en) | 1993-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3124467B2 (en) | Optical coupler | |
US4708433A (en) | Optical connector and method of manufacturing a pair of ferrules therefor | |
US4911518A (en) | Threaded front end connector for optical fiber and method of making same | |
US4490006A (en) | Centering piece for a precision junction for optical fibres | |
JPS6163805A (en) | Production of optical connector and ferrule for optical connector | |
JPH0360088B2 (en) | ||
JPS6163804A (en) | Production of multicore optical connector and ferrule | |
JP2519748B2 (en) | Optical connector ferrule | |
JPS63163308A (en) | Optical element and its manufacture | |
JPS62131210A (en) | Production of optical connector ferrule | |
JPS58216216A (en) | Method for assembling optical fiber connector | |
JPS61210305A (en) | Production of plug for optical fiber cable | |
JP3710532B2 (en) | Optical connector assembly method | |
JP3062147B2 (en) | Multi-core optical connector, mold for manufacturing the same, and method of manufacturing multi-core optical connector | |
JP4140276B2 (en) | Manufacturing method of optical connector | |
JPH0212113A (en) | Manufacture of optical connector | |
JPH0980264A (en) | Multifiber optical connector and its manufacture | |
JPS6255610A (en) | Method for attaching core for optical connector to top end of coated optical fiber | |
JP2006011255A (en) | Optical connector ferrule and optical connector | |
JPS61252508A (en) | Formation of multicore optical fiber core terminal and forming part of multicore optical fiber core terminal | |
JPH07230021A (en) | Pitch conversion multi-unit ribbon of optical fibers and its manufacture | |
JPH0980265A (en) | Manufacture of multifiber optical connector | |
JPH08201651A (en) | Optical waveguide device and its production | |
JPS6240685B2 (en) | ||
JPH04116608A (en) | Optical connector |