JP4483577B2 - Optical connection component and assembly method thereof - Google Patents

Optical connection component and assembly method thereof Download PDF

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JP4483577B2
JP4483577B2 JP2004381268A JP2004381268A JP4483577B2 JP 4483577 B2 JP4483577 B2 JP 4483577B2 JP 2004381268 A JP2004381268 A JP 2004381268A JP 2004381268 A JP2004381268 A JP 2004381268A JP 4483577 B2 JP4483577 B2 JP 4483577B2
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optical waveguide
optical
waveguide
ferrule
housing portion
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JP2006184819A (en
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健一郎 大塚
真樹 大村
渉 桜井
和人 斎藤
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Sumitomo Electric Industries Ltd
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Description

本発明は、光導波路を有して該光導波路と光ファイバとを接続する光接続部品及びその組立方法に関し、詳しくは、生産性の向上やコスト低減を実現するための改良に関する。 The present invention relates to an optical connecting parts and an assembling method thereof has an optical waveguide connecting the optical waveguide and the optical fiber, and more particularly to improvements for realizing improvement and cost reduction of the productivity.

従来、光導波路と光ファイバとの接続構造として、ファイバアレイを使う構成のものが知られている。
ファイバアレイは、石英系若しくはシリコン系のV溝基板上に光ファイバを配列したものである。このファイバアレイを使う光接続部品の接続構造では、接続端面を研磨した後、光を通すアクティブアライメントによって光導波路との調心を行い、位置合わせをして接着剤で固定している(例えば、特許文献1、2参照)。
特開平8−240738号公報 特開平5−257040号公報
Conventionally, a structure using a fiber array is known as a connection structure between an optical waveguide and an optical fiber.
The fiber array is an array of optical fibers on a quartz or silicon V-groove substrate. In the connection structure of the optical connection component using this fiber array, after polishing the connection end face, alignment with the optical waveguide is performed by active alignment through which light passes, alignment is performed and the adhesive is fixed (for example, (See Patent Documents 1 and 2).
JP-A-8-240738 JP-A-5-257040

ところが、光を通しながら調心操作を行う光接続部品の実装作業は、専用の実装装置を必要とし、また実装時間がかかるため、生産性の低下や、コストの高騰等の問題が生じた。   However, the mounting operation of the optical connection component that performs the alignment operation while allowing light to pass requires a dedicated mounting device and takes a long time for mounting, resulting in problems such as a decrease in productivity and an increase in cost.

本発明の目的は、光導波路と光ファイバとを専用の実装装置を使わずに、高精度に接続することができ、生産性の向上やコスト低減を実現可能にする光接続部品及びその組立方法を提供することにある。 An object of the present invention, an optical waveguide and an optical fiber without a dedicated mounting device, can be connected with high precision, optical connecting parts and the assembling that enable realizing improvement and cost reduction in productivity It is to provide a method.

上記目的を達成するために、本発明に係る請求項記載の光接続部品は、導波路収容部とガイド穴を有し、前記導波路収容部に光導波路が収容された光導波路フェルールを備え、前記光導波路フェルールは、前記導波路収容部の内面上の中心軸対象となる少なくとも3箇所に半球体状の係止突起が設けられ、前記光導波路には前記係止突起が係合する3条の係合溝が該係止突起に対応して設けられていることを特徴とする。 To achieve the above object, the optical connecting parts according to claim 1, wherein according to the present invention has a waveguide accommodating portion and the guide bore, comprising an optical waveguide ferrule in which an optical waveguide is accommodated in the waveguide housing part The optical waveguide ferrule is provided with hemispherical locking projections at least at three locations on the inner surface of the waveguide housing portion, and the locking projections are engaged with the optical waveguide. An engaging groove of the strip is provided corresponding to the locking projection .

本発明に係る請求項記載の光接続部品の組立方法は、光導波路フェルールの導波路収容部の内面上の中心軸対象となる少なくとも3箇所に形成された半球体状の係止突起を光導波路の挿入方向に沿って3条に形成された係合溝に係合させて前記光導波路を前記光導波路フェルールに挿入する工程と、前記光導波路フェルールに挿入した前記光導波路を該光導波路フェルールに固定する工程と、を少なくとも実施することを特徴とする。 According to a second aspect of the present invention, there is provided a method for assembling an optical connection component, wherein hemispherical locking projections formed on at least three locations on the inner surface of the waveguide housing portion of the optical waveguide ferrule are formed as light guides. A step of inserting the optical waveguide into the optical waveguide ferrule by engaging engagement grooves formed in three strips along the insertion direction of the waveguide; and the optical waveguide inserted into the optical waveguide ferrule And a step of fixing to at least.

本発明によれば、光導波路を導波路収容部に収容して所定位置に位置決めできる。そして、光導波路を収容した光接続部品は、一端側が光導波路フェルールのガイド穴に嵌入したガイドピンの他端側を、接続相手となる光ファイバ用フェルールのガイド穴に嵌合させるだけで、光導波路フェルールに装着された光導波路と光ファイバ用フェルールに収容保持された光ファイバとを調心させることができ、パッシブアライメントだけで光導波路と光ファイバとを接続することができるため、従来のアクティブアライメントにより組み立てていた場合と比較すると、専用の実装装置を使わずとも、光導波路と光ファイバとを容易、且つ高精度に接続することができ、生産性の向上やコスト低減を実現することができる。 According to the onset bright, it can be positioned at a predetermined position to accommodate an optical waveguide to the waveguide housing portion. The optical connection part that houses the optical waveguide is configured so that the other end of the guide pin, one end of which is inserted into the guide hole of the optical waveguide ferrule, is fitted into the guide hole of the optical fiber ferrule that is the connection partner. The optical waveguide mounted on the waveguide ferrule and the optical fiber accommodated and held in the optical fiber ferrule can be aligned, and the optical waveguide and the optical fiber can be connected only by passive alignment. Compared to the case of assembly by alignment, optical waveguides and optical fibers can be connected easily and with high accuracy without using a dedicated mounting device, which can improve productivity and reduce costs. it can.

以下、本発明に係る光接続部品及びその組立方法の好適な実施の形態について、図面を参照して詳細に説明する。
図1は本発明に係る光接続部品の一実施の形態を示す斜視図、図2は図1に示した光接続部品に使用する光導波路フェルールの平面図、図3は図2のA矢視図、図4は図2のB−B線に沿う断面図、図5は図1に示した光導波路フェルールに光導波路を実装した光接続部品の平面図、図6は図5のC矢視図、図7は図5のD−D線に沿う断面図、図8は図1に示した光接続部品の組立方法を示す手順説明図、図9は図1に示した光接続部品の他の組立方法を示す手順説明図である。
Hereinafter, preferred embodiments of the engagement Ru optical connecting parts and an assembling method of the present invention will be described in detail with reference to the drawings.
1 is a perspective view showing an embodiment of an optical connecting component according to the present invention, FIG. 2 is a plan view of an optical waveguide ferrule used in the optical connecting component shown in FIG. 1, and FIG. 4 is a cross-sectional view taken along line BB in FIG. 2, FIG. 5 is a plan view of an optical connecting component in which an optical waveguide is mounted on the optical waveguide ferrule shown in FIG. 1, and FIG. 7 is a cross-sectional view taken along the line D-D in FIG. 5, FIG. 8 is a procedure explanatory view showing a method of assembling the optical connecting component shown in FIG. 1, and FIG. 9 is another diagram of the optical connecting component shown in FIG. It is procedure explanatory drawing which shows the assembly method of.

この一実施の形態の光接続部品1は、光導波路フェルール9に光導波路3を収容してなるもので、光導波路3を収容した光導波路フェルール9を、光ファイバ5が収容保持された光ファイバ用フェルール15と接続可能にする。
光導波路フェルール9は、光導波路3を収容する導波路収容部7が形成されるとともに、ガイドピン11を嵌入可能なガイド穴13が貫通装備されている。
この光導波路フェルール9は、光ファイバ5を収容保持するとともに、ガイドピン11を嵌入可能なガイド穴13が貫通形成された光ファイバ用フェルール15と、ガイドピン11を介して結合することで、光導波路フェルール9内の光導波路3と光ファイバ用フェルール15内の光ファイバ5とが調心して接続された状態を得る。
The optical connecting component 1 according to this embodiment is formed by housing an optical waveguide 3 in an optical waveguide ferrule 9, and an optical fiber in which an optical fiber 5 is accommodated and held by the optical waveguide ferrule 9 in which the optical waveguide 3 is accommodated. The ferrule 15 can be connected.
The optical waveguide ferrule 9 is formed with a waveguide accommodating portion 7 that accommodates the optical waveguide 3, and is provided with a guide hole 13 into which the guide pin 11 can be inserted.
The optical waveguide ferrule 9 receives and holds the optical fiber 5 and is coupled to the optical fiber ferrule 15 through which the guide hole 13 into which the guide pin 11 can be inserted is formed through the guide pin 11. The optical waveguide 3 in the waveguide ferrule 9 and the optical fiber 5 in the optical fiber ferrule 15 are aligned and connected.

光導波路フェルール9及び光ファイバ用フェルール15に装備されるガイド穴13は、それぞれ左右に一つずつで、一対のガイド穴13間のピッチや穴径は、高精度に一致して形成されている。
ガイド穴13は、光導波路3や光ファイバ5の挿入方向に沿って貫通形成されている。しかし、ガイド穴13はガイドピン11が嵌入する一定の深さがあれば良く、必ずしも貫通して装備する必要はない。
The guide holes 13 provided in the optical waveguide ferrule 9 and the optical fiber ferrule 15 are one on each side, and the pitch and the hole diameter between the pair of guide holes 13 are formed with high accuracy. .
The guide hole 13 is formed through the optical waveguide 3 and the optical fiber 5 in the insertion direction. However, the guide hole 13 only needs to have a certain depth to which the guide pin 11 is inserted, and does not necessarily have to be provided.

本実施の形態の光接続部品1の場合、導波路収容部7の底面には、中心軸対称となる3箇所に半球体状の係止突起21が装備されている。
また、導波路収容部7に挿入される光導波路3は、横断面形状が導波路収容部7の横断面形状に相応する矩形体状で、その底面には、図6及び図7に示すように、係止突起21が係合する断面V字状の係合溝23が形成されている。
係合溝23は、係止突起21の装備箇所に対応して、光導波路3の導波路収容部7への挿入方向に沿って3条に形成されている。
In the case of the optical connecting component 1 according to the present embodiment, the bottom surface of the waveguide housing portion 7 is provided with hemispherical locking protrusions 21 at three locations that are symmetrical with respect to the central axis.
Further, the optical waveguide 3 inserted into the waveguide housing part 7 has a rectangular shape corresponding to the cross-sectional shape of the waveguide housing part 7 as shown in FIGS. In addition, an engagement groove 23 having a V-shaped cross section for engaging with the locking projection 21 is formed.
The engagement grooves 23 are formed in three strips along the insertion direction of the optical waveguide 3 into the waveguide housing portion 7 corresponding to the mounting locations of the locking projections 21.

本実施の形態の場合、導波路収容部7は、光導波路3の挿入方向にのみ開口部を持つ閉空間として貫通形成されている。また、導波路収容部7に挿入された光導波路3の上部を覆う上壁部には、図2及び図5に示すように、導波路収容部7に挿入した光導波路3を光導波路フェルール9に接着固定する接着剤を充填するための窓部27が開設されている。   In the case of the present embodiment, the waveguide housing portion 7 is formed as a closed space having an opening only in the insertion direction of the optical waveguide 3. Further, as shown in FIGS. 2 and 5, the optical waveguide 3 inserted into the waveguide housing portion 7 is provided on the upper wall portion covering the upper portion of the optical waveguide 3 inserted into the waveguide housing portion 7. A window portion 27 for filling an adhesive for adhering and fixing is provided.

上記光導波路フェルール9への光導波路3の組み付けは、図8の(a)→(b)→(c)→(d)→(e)→(f)の手順で諸工程を実施することで、達成される。
即ち、(a)→(b)に示すように、最初に、窓部27から導波路収容部7に、屈折率整合剤を兼ねた接着剤としての樹脂29を注入し、この樹脂29が固化する前に、(c)に示すように、光導波路3を導波路収容部7に挿入する。
そして、光導波路3の両端が導波路収容部7から突出した状態になったら、(d)に示すように、樹脂29を窓部27から再注入する。次いで、(e)に示すように、光導波路3を導波路収容部7の底面側に押さえ付けて、係止突起21と係合溝23との密着(図6参照)による正確な位置決め状態を保持して、接着剤としての樹脂29を硬化させる。光導波路3が導波路収容部7に接着固定されたら、(f)に示すように、光ファイバ用フェルール15に突き合わせる先端面9aを研磨して、端面形成をする。
The assembly of the optical waveguide 3 to the optical waveguide ferrule 9 is performed by carrying out various steps in the order of (a) → (b) → (c) → (d) → (e) → (f) in FIG. Achieved.
That is, as shown in (a) → (b), first, a resin 29 as an adhesive also serving as a refractive index matching agent is injected from the window portion 27 into the waveguide housing portion 7, and the resin 29 is solidified. Prior to this, the optical waveguide 3 is inserted into the waveguide housing portion 7 as shown in FIG.
When both ends of the optical waveguide 3 protrude from the waveguide housing portion 7, the resin 29 is reinjected from the window portion 27 as shown in FIG. Next, as shown in (e), the optical waveguide 3 is pressed against the bottom surface side of the waveguide housing portion 7, and an accurate positioning state is achieved by the close contact (see FIG. 6) of the locking protrusion 21 and the engaging groove 23. The resin 29 as an adhesive is cured by holding. When the optical waveguide 3 is bonded and fixed to the waveguide housing portion 7, as shown in (f), the end face 9a that abuts against the optical fiber ferrule 15 is polished to form an end face.

なお、上記光導波路フェルール9への光導波路3の組み付けは、図9の(a)→(b)→(c)→(d)→(e)の手順で諸工程を実施するようにしても良い。
即ち、(a)→(b)に示すように、予め導波路収容部7に樹脂29を注入する工程は行わず、光導波路3を導波路収容部7に挿入する。
そして、光導波路3の両端が導波路収容部7から突出した状態になったら、(c)に示すように、樹脂29を窓部27から注入する。次いで、(d)に示すように、光導波路3を導波路収容部7の底面側に押さえ付けて、係止突起21と係合溝23との密着(図6参照)による正確な位置決め状態を保持して、接着剤としての樹脂29を硬化させる。光導波路3が導波路収容部7に接着固定されたら、(e)に示すように、光ファイバ用フェルール15に突き合わせる先端面9aを研磨して、端面形成をする。
The assembly of the optical waveguide 3 to the optical waveguide ferrule 9 may be performed in the order of (a) → (b) → (c) → (d) → (e) in FIG. good.
That is, as shown in (a) → (b), the step of injecting the resin 29 into the waveguide housing portion 7 in advance is not performed, and the optical waveguide 3 is inserted into the waveguide housing portion 7.
Then, when both ends of the optical waveguide 3 protrude from the waveguide housing portion 7, a resin 29 is injected from the window portion 27 as shown in FIG. Next, as shown in FIG. 6D, the optical waveguide 3 is pressed against the bottom surface side of the waveguide housing portion 7 so that an accurate positioning state is achieved by the close contact (see FIG. 6) between the locking protrusion 21 and the engaging groove 23. The resin 29 as an adhesive is cured by holding. When the optical waveguide 3 is bonded and fixed to the waveguide housing portion 7, as shown in (e), the end surface 9a that abuts against the optical fiber ferrule 15 is polished to form an end surface.

なお、図9に示すように、光導波路3を導波路収容部7に挿入した時に、光導波路3の先端面に接着剤が付着する虞がない組立方法を採用した場合には、光導波路3の先端面が付着した接着剤で凹凸面とされることがないので、最終工程である研磨工程は省くようにしても良い。
従って、上記光接続部品1の組立方法としては、光導波路フェルール9に形成された係止突起21を光導波路3の係合溝23に係合させて光導波路3を光導波路フェルール9に挿入する工程(図8(c)の工程、図9(b)の工程)と、光導波路フェルール9に挿入した光導波路3を該光導波路フェルール9に接着固定する工程(図8の(d),(e)の工程、図9の(c),(d)の工程)と、を少なくとも実施すれば良い。
As shown in FIG. 9, when an assembly method is employed in which there is no possibility that an adhesive adheres to the distal end surface of the optical waveguide 3 when the optical waveguide 3 is inserted into the waveguide housing portion 7, the optical waveguide 3 is used. Since the adhesive surface does not make the surface uneven, the polishing step as the final step may be omitted.
Therefore, as an assembling method of the optical connecting component 1, the locking projection 21 formed on the optical waveguide ferrule 9 is engaged with the engaging groove 23 of the optical waveguide 3 and the optical waveguide 3 is inserted into the optical waveguide ferrule 9. Step (step of FIG. 8 (c), step of FIG. 9 (b)) and step of adhering and fixing the optical waveguide 3 inserted into the optical waveguide ferrule 9 to the optical waveguide ferrule 9 ((d), ( Step e) and steps (c) and (d) in FIG. 9 may be performed at least.

以上に説明した光接続部品1によれば、一端側が光導波路フェルール9のガイド穴13に嵌入したガイドピン11の他端側を、接続相手となると光ファイバ用フェルール15のガイド穴13に嵌合させるだけで、光導波路フェルール9に装着された光導波路3と光ファイバ用フェルール15に収容保持された光ファイバ5とを調心させることができ、パッシブアライメントだけで光導波路3と光ファイバ5とを接続することができるため、従来のアクティブアライメントにより組み立てていた場合と比較すると、専用の実装装置を使わずとも、光導波路3と光ファイバ5とを容易、且つ高精度に接続することができ、生産性の向上やコスト低減を実現することができる。   According to the optical connecting component 1 described above, the other end of the guide pin 11 whose one end is fitted in the guide hole 13 of the optical waveguide ferrule 9 is fitted in the guide hole 13 of the ferrule 15 for optical fiber when it becomes a connection partner. The optical waveguide 3 mounted on the optical waveguide ferrule 9 and the optical fiber 5 accommodated and held in the optical fiber ferrule 15 can be aligned, and the optical waveguide 3 and the optical fiber 5 can be aligned only by passive alignment. Therefore, the optical waveguide 3 and the optical fiber 5 can be connected easily and with high accuracy without using a dedicated mounting device, as compared with the case where the conventional active alignment is used. , Improvement in productivity and cost reduction can be realized.

また、本実施の形態の光接続部品1によれば、光導波路3の光導波路フェルール9への組み付けは、光導波路3を光導波路フェルール9に装備した導波路収容部7に挿入する操作で良く、光導波路3を組み付ける際に、他の部品や工具による位置決めが不要となるため、光導波路3の組み付け性が向上する。   Further, according to the optical connecting component 1 of the present embodiment, the optical waveguide 3 can be assembled to the optical waveguide ferrule 9 by an operation of inserting the optical waveguide 3 into the waveguide accommodating portion 7 provided in the optical waveguide ferrule 9. When the optical waveguide 3 is assembled, positioning with other components or tools is not necessary, so that the assemblability of the optical waveguide 3 is improved.

また、本実施の形態の光接続部品1によれば、光導波路フェルール9と光導波路3とは、それぞれに形成された係止突起21と係合溝23との係合によりパッシブにアライメントすることが可能になり、組立性を向上させることができる。   Further, according to the optical connecting component 1 of the present embodiment, the optical waveguide ferrule 9 and the optical waveguide 3 are passively aligned by the engagement of the engaging projections 21 and the engaging grooves 23 formed respectively. As a result, the assemblability can be improved.

また、本実施の形態の光接続部品1によれば、半球体状の係止突起21は樹脂成形で形成する場合に型離れし易い形状であるため、成形用の金型の製造も容易になる。   In addition, according to the optical connecting component 1 of the present embodiment, the hemispherical locking protrusion 21 has a shape that is easy to be separated from the mold when formed by resin molding, so that it is easy to manufacture a molding die. Become.

また、本実施の形態の光接続部品1によれば、係止突起21が半球体状であるため、例えば、光導波路3と光導波路フェルール9との間の係合箇所が、1箇所又は2箇所では、係止突起21及び係合溝23の係合部を支点としたシーソー運動のようなガタつき等が生じる虞があり、バランス良く位置決めすることが難しいが、係合箇所を3箇所にしたことで、ガタつきの発生を押さえたバランスの良い位置決めが可能になり、光導波路3と光導波路フェルール9とを高精度に位置決めすることが可能になる。
なお、係止突起21が半球体状の場合、装備箇所が少なくとも3箇所以上で、安定したバランスで位置決めできるのであれば、装備数及び装備箇所は上記実施の形態に限らない。但し、係止突起21の装備数を増やせば、その分、光導波路3側に形成する係合溝23の装備数も増えて構造が複雑化するため、係止突起21の装備を必要最小限の3箇所にしたことは、メリットが大きい。
Further, according to the optical connecting component 1 of the present embodiment, since the locking projection 21 is hemispherical, for example, there are one or two engaging locations between the optical waveguide 3 and the optical waveguide ferrule 9. In some places, there is a risk of rattling such as a seesaw motion with the engaging portions of the engaging protrusions 21 and the engaging grooves 23 as fulcrums, and it is difficult to position in a balanced manner. As a result, it is possible to perform positioning with good balance while suppressing the occurrence of rattling, and it is possible to position the optical waveguide 3 and the optical waveguide ferrule 9 with high accuracy.
In addition, when the latching protrusion 21 is hemispherical, the number of equipment and the equipment locations are not limited to the above embodiment as long as the equipment locations are at least three and can be positioned with a stable balance. However, if the number of the locking projections 21 is increased, the number of the engagement grooves 23 formed on the optical waveguide 3 side is increased accordingly, and the structure becomes complicated. There are significant advantages to the three locations.

また、本実施の形態の光接続部品1によれば、光導波路3の光導波路フェルール9への組み付けは、光導波路3を、光導波路フェルール9の導波路収容部7に挿入する操作で行うが、導波路収容部7が挿入方向両端と窓部27以外は開口部を持たない閉空間であるため、光導波路3を導波路収容部7に挿入した後、開口部を別部品の蓋等で塞ぐ必要がなく、部品点数の削減により低コスト化を図り易い。
但し、導波路収容部7を上記実施の形態のような閉空間に限定する必要はない。例えば、導波路収容部7の上面側に対応する位置を、前面開放した開空間に形成することも可能である。導波路収容部7を開空間にした場合には、光導波路3を導波路収容部7に挿入し、接着固定した後、開口部を別部品の蓋等で塞ぐ必要が生じるが、光導波路3を導波路収容部7に挿入する操作は閉空間の場合よりも容易になり、組立性は向上する。
Further, according to the optical connecting component 1 of the present embodiment, the optical waveguide 3 is assembled to the optical waveguide ferrule 9 by an operation of inserting the optical waveguide 3 into the waveguide accommodating portion 7 of the optical waveguide ferrule 9. Since the waveguide housing portion 7 is a closed space having no openings other than both ends in the insertion direction and the window portion 27, the optical waveguide 3 is inserted into the waveguide housing portion 7 and then the opening portion is covered with a lid or the like of another component. It is not necessary to close it, and it is easy to reduce the cost by reducing the number of parts.
However, it is not necessary to limit the waveguide housing portion 7 to a closed space as in the above embodiment. For example, a position corresponding to the upper surface side of the waveguide housing portion 7 can be formed in an open space with the front surface open. When the waveguide housing portion 7 is an open space, the optical waveguide 3 is inserted into the waveguide housing portion 7 and bonded and fixed, and then the opening portion needs to be closed with another lid or the like. Is easier to insert into the waveguide housing portion 7 than in the closed space, and the assemblability is improved.

なお、上記実施の形態では、係止突起21との係合のために、光導波路3に形成する係合溝23は、V字状断面としたが、U字状断面とすることも可能である。   In the above embodiment, the engagement groove 23 formed in the optical waveguide 3 for engagement with the locking projection 21 has a V-shaped cross section, but it may be a U-shaped cross section. is there.

また、光導波路フェルール9の導波路収容部7に装備する係止突起21の形状は、上記実施の形態に示した半球体状に限らない。
例えば、図10及び図11に示すように、光導波路フェルール9Aにおいて、係止突起21を、光導波路の挿入方向に沿って延伸した断面半円状の線条体から形成するようにしても良い。
このようにすると、係止突起21の構造上、光導波路3に形成する係合溝23がV字状又はU字状の何れであっても、相互の係合による位置決めが容易になり、組立性の更に向上させることができる。
Further, the shape of the locking projection 21 provided in the waveguide housing portion 7 of the optical waveguide ferrule 9 is not limited to the hemispherical shape shown in the above embodiment.
For example, as shown in FIGS. 10 and 11, in the optical waveguide ferrule 9 </ b> A, the locking projection 21 may be formed from a semicircular section with a semicircular cross section extending along the insertion direction of the optical waveguide. .
If it does in this way, positioning by mutual engagement becomes easy even if the engagement groove | channel 23 formed in the optical waveguide 3 is V shape or U shape on the structure of the latching protrusion 21, and assembly is carried out. The property can be further improved.

また、係止突起21を断面半円状の線条体から形成するようにした場合には、図12に示すように、係止突起21が少なくとも2箇所に設けられる構成とすると良い。なお、図10は他の光導波路フェルール9Aの平面図、図11は図10のE−E線に沿う断面図、図12は図10の光導波路フェルール9Aに光導波路3を実装した光接続部品の端面図を示す。
このようにした場合、導波路収容部7に形成される係止突起21は半円柱体となり、係合溝23との接触域が半球体状の係止突起の場合よりも多くなり、半球体状の係止突起の場合よりも少ない装備数で、バランスの安定した位置決めが可能になる。
即ち、例えば、光導波路3と光導波路フェルール9とが、1箇所の半円柱体の係止突起21と係合溝23によって位置合わせされる場合には、係止突起21及び係合溝23の係合部を支点としたシーソー運動のようなガタつき等が生じる虞があり、精度良く位置決めすることが難しいが、光導波路3及び光導波路フェルール9の半円柱体と溝とによる係合箇所を2箇所以上にすることで、ガタつきの発生を押さえたバランスの良い位置決めが可能になり、光導波路3と光導波路フェルール9とを高精度に位置決めすることが可能になり、半球体状の係止突起の場合よりも1箇所少ない装備数で、安定した位置決めが可能になる。
Moreover, when the latching protrusion 21 is formed from a linear body having a semicircular cross section, as shown in FIG. 12, the latching protrusion 21 may be provided in at least two places. 10 is a plan view of another optical waveguide ferrule 9A, FIG. 11 is a cross-sectional view taken along line E-E in FIG. 10, and FIG. 12 is an optical connection component in which the optical waveguide 3 is mounted on the optical waveguide ferrule 9A in FIG. The end view of is shown.
In this case, the locking protrusion 21 formed in the waveguide housing portion 7 is a semi-cylindrical body, and the contact area with the engaging groove 23 is larger than that in the case of the hemispherical locking protrusion, and the hemispherical body Positioning with a stable balance is possible with a smaller number of equipment than in the case of a shaped locking projection.
That is, for example, when the optical waveguide 3 and the optical waveguide ferrule 9 are aligned by the locking projection 21 and the engagement groove 23 of one semicylindrical body, the locking projection 21 and the engagement groove 23 There is a risk of rattling such as a seesaw motion with the engaging portion as a fulcrum, and it is difficult to position with high accuracy. However, the engaging portion by the semi-cylindrical body and the groove of the optical waveguide 3 and the optical waveguide ferrule 9 By using two or more locations, it becomes possible to achieve a well-balanced positioning while suppressing the occurrence of rattling, and it becomes possible to position the optical waveguide 3 and the optical waveguide ferrule 9 with high accuracy, and to form a hemispherical lock. Stable positioning is possible with one less equipment than the protrusion.

本発明に係る光接続部品の一実施の形態の斜視図である。1 is a perspective view of an embodiment of an optical connection component according to the present invention. 図1に示した光接続部品に使用する光導波路フェルールの平面図である。It is a top view of the optical waveguide ferrule used for the optical connection component shown in FIG. 図2のA矢視図である。FIG. 3 is a view taken in the direction of arrow A in FIG. 2. 図2のB−B線に沿う断面図である。It is sectional drawing which follows the BB line of FIG. 図1に示した光接続部品の平面図である。It is a top view of the optical connection component shown in FIG. 図5のC矢視図である。It is C arrow line view of FIG. 図5のD−D線に沿う断面図である。It is sectional drawing which follows the DD line | wire of FIG. 図1に示した光接続部品の組立方法の一実施の形態の手順説明図である。It is procedure explanatory drawing of one Embodiment of the assembly method of the optical connection component shown in FIG. 図1に示した光接続部品の組立方法の他の実施の形態の手順説明図である。It is procedure explanatory drawing of other embodiment of the assembly method of the optical connection component shown in FIG. 他の光導波路フェルールの平面図である。It is a top view of another optical waveguide ferrule. 図10のE−E線に沿う断面図である。It is sectional drawing which follows the EE line | wire of FIG. 図10に示した光導波路フェルールに光導波路を実装した光接続部品の端面図である。It is an end view of the optical connection component which mounted the optical waveguide in the optical waveguide ferrule shown in FIG.

符号の説明Explanation of symbols

1 光接続部品
3 光導波路
5 光ファイバ
7 導波路収容部
9、9A 光導波路フェルール
11 ガイドピン
13 ガイド穴
15 光ファイバ用フェルール
21 係止突起
23 係合溝
27 窓部
DESCRIPTION OF SYMBOLS 1 Optical connection part 3 Optical waveguide 5 Optical fiber 7 Waveguide accommodating part 9, 9A Optical waveguide ferrule 11 Guide pin 13 Guide hole 15 Optical fiber ferrule 21 Locking protrusion 23 Engaging groove 27 Window part

Claims (2)

導波路収容部とガイド穴を有し、前記導波路収容部に光導波路が収容された光導波路フェルールを備え、An optical waveguide ferrule having a waveguide accommodating portion and a guide hole, and having an optical waveguide accommodated in the waveguide accommodating portion,
前記光導波路フェルールは、前記導波路収容部の内面上の中心軸対象となる少なくとも3箇所に半球体状の係止突起が設けられ、前記光導波路には前記係止突起が係合する3条の係合溝が該係止突起に対応して設けられていることを特徴とする光接続部品。The optical waveguide ferrule is provided with hemispherical locking protrusions at at least three locations on the inner surface of the waveguide housing portion as the central axis target, and the optical waveguide has three strips on which the locking protrusions engage. The optical connection component is provided with an engaging groove corresponding to the locking projection.
光導波路フェルールの導波路収容部の内面上の中心軸対象となる少なくとも3箇所に形成された半球体状の係止突起を光導波路の挿入方向に沿って3条に形成された係合溝に係合させて前記光導波路を前記光導波路フェルールに挿入する工程と、前記光導波路フェルールに挿入した前記光導波路を該光導波路フェルールに固定する工程と、を少なくとも実施することを特徴とする光接続部品の組立方法。The hemispherical locking protrusions formed at least at three locations on the inner surface of the waveguide housing portion of the optical waveguide ferrule are formed in three engaging grooves formed along the optical waveguide insertion direction. An optical connection characterized by performing at least a step of engaging and inserting the optical waveguide into the optical waveguide ferrule and a step of fixing the optical waveguide inserted into the optical waveguide ferrule to the optical waveguide ferrule How to assemble parts.
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Publication number Priority date Publication date Assignee Title
US8449202B2 (en) 2008-06-11 2013-05-28 Molex Incorporated Optical connector

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JP5165872B2 (en) 2006-10-11 2013-03-21 住友電気工業株式会社 Ferrule, optical waveguide connector manufacturing method using the ferrule, and optical waveguide connector
JP5262547B2 (en) * 2008-10-08 2013-08-14 住友ベークライト株式会社 Housing member, connector manufacturing assembly part, and connector manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8449202B2 (en) 2008-06-11 2013-05-28 Molex Incorporated Optical connector

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