JPH1048476A - Optical fiber-aligned body - Google Patents
Optical fiber-aligned bodyInfo
- Publication number
- JPH1048476A JPH1048476A JP20047896A JP20047896A JPH1048476A JP H1048476 A JPH1048476 A JP H1048476A JP 20047896 A JP20047896 A JP 20047896A JP 20047896 A JP20047896 A JP 20047896A JP H1048476 A JPH1048476 A JP H1048476A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- coating
- fixing portion
- fixing
- substrate
- 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
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】本発明は、単数本または複数
本の光ファイバを配列して、保持基板により挟持固定し
た光ファイバ整列部品を有する光ファイバ整列体に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber alignment member having an optical fiber alignment component in which one or a plurality of optical fibers are arranged and held and fixed by a holding substrate.
【０００２】[0002]
【従来技術】複数本の光ファイバを、光軸を平行に保っ
た状態で整列固定する場合の構造としては、一般的に
は、図５に示すような光ファイバの位置を決めるための
ガイド溝が形成された整列基板の一部もしくは全部に所
望の間隔に平行に形成する。形成方法は、一般的に機械
研削やエッチングによる処理方法が用いられている。あ
るいは樹脂を材料とした成型により整列基板を作製する
場合もある。平行に形成された整列基板ガイド溝に光フ
ァイバの被覆部を除去した光ファイバをそれぞれ設置し
た後、上部から光ファイバをガイド溝内に固定するため
の押さえ用固定基板をかぶせ、空隙部に固定材を充填し
固定する。固定材としては、熱硬化型のエポキシ樹脂等
が用いられる。また、半田を用いる事も可能である。整
列基板２１の形状は、光ファイバの位置を固定するため
のガイド溝４１を形成した光ファイバ固定部２２と光フ
ァイバの被覆部を固定するための被覆固定部２３とから
構成され、通常被覆部の厚みが光ファイバの外径より大
きいため、高さ方向を合わせるために基板のガイド溝が
形成されていない部分に段差部２４を設けて基板厚みを
薄くした構造が良く用いられる。押さえ用の固定基板の
形状に関しては、矩形状が良く用いられ、その幅の大き
さを通常ガイド溝が形成されている整列基板の幅に合わ
せてあり、作製された光ファイバ整列体の断面形状が、
矩形の一体形状になるようにしてある。固定基板の長さ
は整列基板のガイド溝が形成されている部分の長さに合
わせる場合や、整列基板全体の長さに合わせる場合があ
る。固定基板を整列基板全体の長さに合わせる場合、や
はり光ファイバ被覆部の厚みを考慮して、光ファイバ被
覆部が設置される部分に段差を設け基板厚みを薄くする
場合が多い。しかる後、光ファイバの端面が位置する側
の側面を研磨し、光軸方向の光ファイバの端面位置をあ
わせる。研磨工程は通常機械研磨が行われている。これ
らの光ファイバ整列体を構成する部品の材料としては、
アルミナ等のセラミクスやシリコン単結晶が用いられて
いる。また光ファイバ整列体を光導波路基板などに接続
固定する際に光硬化型接着剤を使用する場合には、接着
剤を硬化させるために照射する光が良好に接続面に充填
された接着剤に到達するよう透光性の光ファイバ整列体
にするために、光ファイバ整列体の部材を透光性の材
料、例えば石英ガラスを用いて構成する場合もある。こ
の場合には、整列基板と光ファイバ及び固定基板の固定
には同様の理由から光透過型の接着剤を使用する必要が
ある。2. Description of the Related Art When a plurality of optical fibers are aligned and fixed while keeping their optical axes parallel, a guide groove for determining the position of the optical fiber as shown in FIG. Are formed in parallel with a desired interval on a part or the whole of the alignment substrate on which is formed. As a forming method, a processing method using mechanical grinding or etching is generally used. Alternatively, the alignment substrate may be manufactured by molding using a resin as a material. After installing the optical fibers with the optical fiber coating removed in the parallel alignment substrate guide grooves, cover them with a fixing substrate for fixing the optical fibers in the guide grooves from above and fix them in the gaps Fill and fix the material. As the fixing material, a thermosetting epoxy resin or the like is used. Further, it is also possible to use solder. The shape of the alignment substrate 21 is composed of an optical fiber fixing part 22 having a guide groove 41 for fixing the position of the optical fiber and a coating fixing part 23 for fixing the coating part of the optical fiber. Since the thickness of the substrate is larger than the outer diameter of the optical fiber, a structure in which a step portion 24 is provided in a portion of the substrate where the guide groove is not formed in order to adjust the height direction to reduce the substrate thickness is often used. Regarding the shape of the fixed substrate for holding, a rectangular shape is often used, and the width of the fixed substrate is usually adjusted to the width of the alignment substrate on which the guide groove is formed, and the cross-sectional shape of the manufactured optical fiber alignment body But,
It has a rectangular integral shape. The length of the fixed substrate may be adjusted to the length of the portion of the alignment substrate where the guide groove is formed, or may be adjusted to the length of the entire alignment substrate. When the fixed substrate is adjusted to the entire length of the alignment substrate, the thickness of the substrate is often reduced by providing a step at the portion where the optical fiber coating is installed, also taking the thickness of the optical fiber coating into account. Thereafter, the side face on the side where the end face of the optical fiber is located is polished to adjust the position of the end face of the optical fiber in the optical axis direction. In the polishing step, mechanical polishing is usually performed. As the material of the components constituting these optical fiber alignment bodies,
Ceramics such as alumina and silicon single crystals are used. When a light-curing adhesive is used to connect and fix the optical fiber alignment body to an optical waveguide substrate or the like, light to be applied to cure the adhesive is applied to the adhesive filled on the connection surface. In some cases, the members of the optical fiber alignment body are made of a light-transmitting material, for example, quartz glass, in order to make the optical fiber alignment body to reach. In this case, it is necessary to use a light-transmitting adhesive for fixing the alignment substrate, the optical fiber, and the fixed substrate for the same reason.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記の
ような従来構造において、整列基板の形状を、被覆部の
厚みを考慮して光ファイバの高さ方向を合わせるために
基板のガイド溝が形成されていない部分に段差を設けて
基板厚みを薄くしたり、固定基板形状を、やはり光ファ
イバ被覆部の厚みを考慮して、光ファイバ被覆部が設置
される部分に段差を設け基板厚みを薄くする形状にする
場合、加工条件によっては段差部に加工歪が残留し、整
列基板を用いて組み立てた光ファイバ整列体に負荷をか
けた場合、段差部にクラックを生じるという問題点が生
じる場合があった。また、光ファイバを整列基板上に設
置する際に、光ファイバ固定部終端部のエッジにあたり
光ファイバに微小な傷が入り、光ファイバの強度の劣化
を起こす場合があった。However, in the conventional structure as described above, a guide groove of the substrate is formed to adjust the shape of the alignment substrate to the height direction of the optical fiber in consideration of the thickness of the covering portion. Steps are provided in portions that are not provided to reduce the thickness of the substrate, and the shape of the fixed substrate is also reduced in consideration of the thickness of the optical fiber coating portion by providing a step in the portion where the optical fiber coating portion is installed. In the case of forming a shape, there is a problem that, depending on the processing conditions, processing strain remains in the step portion, and when a load is applied to the optical fiber alignment body assembled using the alignment substrate, a crack is generated in the step portion. Was. In addition, when the optical fiber is placed on the alignment substrate, the optical fiber may be slightly scratched on the edge of the terminal end of the optical fiber fixing portion, and the strength of the optical fiber may be deteriorated.
【０００４】本発明は、上述した従来の構造における問
題点を解決するためのものであり、容易でかつ現実的な
手段で、光ファイバ整列体用の基板を作製できる構造を
提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems in the conventional structure, and has as its object to provide a structure capable of manufacturing a substrate for an optical fiber alignment body by easy and practical means. And
【０００５】[0005]
【課題を解決するための手段】上記従来の問題点を解決
するため、光ファイバ整列基板の段差の段差部の形状を
曲面形状とし、光ファイバ固定部と被覆固定部とが作る
高さの差以上の曲率半径を有する曲面で構成した。ま
た、段差部の曲面の起点は光ファイバ固定部と同じ高さ
から始まるようにして、光ファイバ固定部及び被覆固定
部の面に対し、垂直な段差面が存在しないようにした。In order to solve the above-mentioned conventional problems, the shape of the step portion of the step of the optical fiber alignment substrate is made to be a curved surface, and the height difference between the optical fiber fixing portion and the coating fixing portion is formed. It was composed of a curved surface having the above radius of curvature. In addition, the starting point of the curved surface of the stepped portion starts from the same height as the optical fiber fixing portion so that there is no stepped surface perpendicular to the surfaces of the optical fiber fixing portion and the coating fixing portion.
【０００６】[0006]
【発明の実施の形態】以下、本発明の実施例を図面に基
づいて詳細に説明する。図１は本発明による光ファイバ
整列基板の１実施例を示す。また図２は本発明による整
列基板の全体の側面図を示す。整列基板２１は光ファイ
バを固定する光ファイバ固定部２２と光ファイバ被覆部
を搭載固定する被覆固定部２３及び段差部２４とから構
成されている。基板の材料としては石英系ガラスを用
い、機械加工によって作製した。段差部２４の形状は一
定の曲率を持った曲面から構成されている。段差部曲面
の曲率は出来るだけ大きい方が望ましいが、それだけで
は不十分で全体の形状として光ファイバ固定部２２と被
覆固定部２３をつなぐ段差部の形状は出来るだけ滑らか
な方が好ましく、段差部２４の形状は、曲面の起点を光
ファイバ固定部終端２５から始める必要があり、曲面の
曲率半径Ｒは、光ファイバ固定部２２と被覆固定部２３
との高さの差Ｈより大きくなっている必要がある。段差
部の曲率の大きさの上限としては、光ファイバ固定部と
平行な面を持つ被覆固定部２３が存在する必要があるの
で、光ファイバ固定部終端２５及び被覆部終端２６を通
り、かつ中心が被覆部終端の鉛直線上にあるような円が
持つ半径より小さくする必要がある。このような構造の
光ファイバ整列基板にする事で、基板段差部に加工歪が
集中して残留する事が無くなり、段差部にクラックを生
じるという問題点を解消する事が出来た。また、光ファ
イバを整列基板上に設置する際に、光ファイバ固定部終
端部２５は滑らかな形状になるため、光ファイバがエッ
ジにあたり光ファイバに微小な傷が入り、光ファイバの
強度の劣化を起こす事が無くなる。図３は本発明による
別の実施例を示す。段差形状を曲面状に形成する場合程
の効果はないが、段差部２４の一部にテーパ部２７を作
り、被覆固定部２３とのなす角度θが９０度より大きく
なるようにしても改善を得る事が出来る。図４は本発明
による別の実施例を示す。この場合光ファイバ固定部終
端２５にＣ面２８を付ければ光ファイバがエッジにあた
り光ファイバに微小な傷が入り、光ファイバの強度劣化
を起こすのを低減する事が可能となる。また、光ファイ
バ固定部終端２５にＲ面加工処理を施しても同様の効果
を得る事が出来る。例えば光ファイバ整列基板の厚みが
段差加工部の高さＨに比較して充分大きい場合、段差部
に発生するクラックの頻度は少なくなるため、必ずしも
段差部２４に上記実施例で述べたような曲面部を形成す
る必要は無い。このような場合、上述したように固定部
終端２５にＣ面２８を形成するだけで、光ファイバ整列
体の強度面の向上を得る事が出来る。また、これまで複
数本の光ファイバ整列体について実施例を述べてきたが
本発明による構造は単数本の光ファイバ整列部品にも適
用可能である事は言うまでもない。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an embodiment of an optical fiber alignment substrate according to the present invention. FIG. 2 shows an overall side view of the alignment substrate according to the present invention. The alignment substrate 21 includes an optical fiber fixing portion 22 for fixing an optical fiber, a coating fixing portion 23 for mounting and fixing an optical fiber coating portion, and a step portion 24. A quartz glass was used as a material of the substrate, and was manufactured by machining. The shape of the step portion 24 is constituted by a curved surface having a constant curvature. It is desirable that the curvature of the curved surface of the step portion is as large as possible. However, this is not sufficient, and the shape of the step portion connecting the optical fiber fixing portion 22 and the coating fixing portion 23 is preferably as smooth as possible. 24, the starting point of the curved surface needs to start from the end 25 of the optical fiber fixing portion, and the radius of curvature R of the curved surface is determined by the optical fiber fixing portion 22 and the coating fixing portion 23.
Must be larger than the height difference H from the height. As the upper limit of the curvature of the stepped portion, it is necessary that the coating fixing portion 23 having a surface parallel to the optical fiber fixing portion be present. Must be smaller than the radius of a circle that is on the vertical line at the end of the coating. By using an optical fiber alignment substrate having such a structure, processing strain is prevented from being concentrated and remaining on the step portion of the substrate, and the problem that cracks occur at the step portion can be solved. In addition, when the optical fiber is placed on the alignment substrate, the optical fiber fixing portion termination portion 25 has a smooth shape, so that the optical fiber hits the edge and a small scratch is made on the optical fiber, and deterioration of the strength of the optical fiber is reduced. It will not happen. FIG. 3 shows another embodiment according to the present invention. Although the effect is not as good as the case where the step is formed into a curved surface, the improvement can be achieved even if the taper 27 is formed in a part of the step 24 so that the angle θ formed with the coating fixing part 23 is larger than 90 degrees. You can get it. FIG. 4 shows another embodiment according to the present invention. In this case, if the C-plane 28 is attached to the end 25 of the optical fiber fixing portion, it is possible to reduce the possibility that the optical fiber hits the edge and the optical fiber is minutely damaged and the strength of the optical fiber is deteriorated. Also, the same effect can be obtained by performing an R-surface processing on the optical fiber fixing portion end 25. For example, when the thickness of the optical fiber alignment substrate is sufficiently large as compared with the height H of the stepped portion, the frequency of cracks generated in the stepped portion is reduced, so that the curved portion as described in the above embodiment is not necessarily formed in the stepped portion 24. It is not necessary to form a part. In such a case, as described above, the strength surface of the optical fiber alignment body can be improved only by forming the C surface 28 at the fixed end 25. Although the embodiment has been described with respect to a plurality of optical fiber alignment bodies, it is needless to say that the structure according to the present invention can be applied to a single optical fiber alignment component.
【０００７】[0007]
【発明の効果】以上、実施例を挙げて説明したように本
発明によれば、充分な強度を有する光ファイバ整列体を
容易にかつ低コストに作製することが可能となる。As described above, according to the present invention, an optical fiber array having sufficient strength can be manufactured easily and at low cost according to the present invention.
【図１】 本発明にかかる光ファイバ整列体用基板の１
実施例を示す斜視図である。FIG. 1 shows a substrate 1 for an optical fiber alignment body according to the present invention.
It is a perspective view showing an example.
【図２】 本発明にかかる光ファイバ整列体の１実施例
を示す側面図である。FIG. 2 is a side view showing one embodiment of the optical fiber alignment body according to the present invention.
【図３】 本発明の別の実施例を示す側面図である。FIG. 3 is a side view showing another embodiment of the present invention.
【図４】 本発明の別の実施例を示す斜視図である。FIG. 4 is a perspective view showing another embodiment of the present invention.
【図５】 従来の実施例を示す斜視図。FIG. 5 is a perspective view showing a conventional example.
２１，２２，２３，２４，２５，２６，２７，２８ 光
ファイバ整列用基板 ４１，Ｖ溝 ５１，接着剤 ６１，光ファイバ ７１，光ファイバ被覆部21, 22, 23, 24, 25, 26, 27, 28 Optical fiber alignment substrate 41, V-groove 51, adhesive 61, optical fiber 71, optical fiber coating
Claims (5)
る光ファイバ固定部と、該光ファイバ固定部と段差部を
介して光ファイバ被覆部を搭載固定する被覆固定部とを
有する光ファイバ整列基板と、該光ファイバ整列基板上
に光ファイバを設置した後に光ファイバを保持固定する
光ファイバ固定部と、該光ファイバ固定部と段差を介し
て光ファイバ被覆部を保持固定する被覆固定部とを有す
る光ファイバ固定基板とを有する光ファイバ整列体にお
いて、前記段差部は一定の曲率を有する曲面と光ファイ
バ固定部と同じ高さの位置を起点として曲率半径の形状
から構成されている光ファイバ整列基板および光ファイ
バ固定基板とを有する光ファイバ整列体。An optical fiber alignment device comprising: an optical fiber fixing portion having a guide groove for installing an optical fiber on an upper surface; and a coating fixing portion for mounting and fixing an optical fiber coating portion via the optical fiber fixing portion and a step portion. A substrate, an optical fiber fixing portion for holding and fixing the optical fiber after installing the optical fiber on the optical fiber alignment substrate, and a coating fixing portion for holding and fixing the optical fiber coating portion via the optical fiber fixing portion and the step. An optical fiber fixed body having an optical fiber fixing substrate having an optical fiber, wherein the step portion has a curved surface having a constant curvature and a shape having a radius of curvature starting from a position at the same height as the optical fiber fixing portion. An optical fiber alignment body having an alignment substrate and an optical fiber fixing substrate.
する段差部曲面の曲率半径は光ファイバ固定部と被覆固
定部とが作る高さの差以上の曲率半径を有する曲面で構
成されている光ファイバ整列基板および光ファイバ固定
基板とを有することを特徴とする請求項１に記載の光フ
ァイバ整列体。2. The curved surface of the stepped portion between the optical fiber fixing portion and the coating fixing portion has a radius of curvature that is equal to or larger than the height difference between the optical fiber fixing portion and the coating fixing portion. The optical fiber alignment body according to claim 1, comprising an optical fiber alignment substrate and an optical fiber fixing substrate.
する段差部曲面の曲率半径は光ファイバ固定部終端と被
覆固定部終端とを通り、かつその中心が被覆部終端の鉛
直線上にある円の半径より小さい光ファイバ整列基板お
よび光ファイバ固定基板とを有することを特徴とする請
求項１に記載の光ファイバ整列体。3. The radius of curvature of the curved surface of the step portion passing between the optical fiber fixing portion and the coating fixing portion passes through the optical fiber fixing portion end and the coating fixing portion end, and the center thereof is on the vertical line of the coating portion end. The optical fiber alignment body according to claim 1, further comprising an optical fiber alignment substrate and an optical fiber fixing substrate smaller than a radius of a certain circle.
る光ファイバ固定部と、該光ファイバ固定部と段差を介
して光ファイバ被覆部を搭載固定する被覆固定部とを有
する光ファイバ整列基板、または該整列基板上に光ファ
イバを設置した後、光ファイバを保持及び固定する目的
で光ファイバを保持固定する光ファイバ固定部と該光フ
ァイバ固定部と段差を介して光ファイバ被覆部を保持固
定する被覆固定部とを有する光ファイバ固定基板におい
て、段差部と被覆固定部とが作る角度は９０度より大き
い光ファイバ整列基板および光ファイバ固定基板とを有
することを特徴とする請求項１に記載の光ファイバ整列
体。4. An optical fiber alignment substrate having an optical fiber fixing portion having a guide groove for installing an optical fiber on an upper surface, and a coating fixing portion for mounting and fixing an optical fiber coating portion via a step with the optical fiber fixing portion. Or, after installing the optical fiber on the alignment substrate, holding the optical fiber for the purpose of holding and fixing the optical fiber, and holding the optical fiber coating portion via a step with the optical fiber fixing portion and the optical fiber fixing portion 2. An optical fiber fixing substrate having a coating fixing portion for fixing, wherein an angle formed by the step portion and the coating fixing portion has an optical fiber alignment substrate and an optical fiber fixing substrate larger than 90 degrees. An optical fiber alignment body as described in the above.
る光ファイバ固定部と、該光ファイバ固定部と段差を介
して光ファイバ被覆部を搭載固定する被覆固定部とを有
する光ファイバ整列基板、または該整列基板上に光ファ
イバを設置した後、光ファイバを保持及び固定する目的
で光ファイバを保持固定する光ファイバ固定部と該光フ
ァイバ固定部と段差を介して光ファイバ被覆部を保持固
定する被覆固定部とを有する光ファイバ固定基板におい
て、光ファイバ固定部終端は切り欠き部または曲面部を
有している光ファイバ整列基板および光ファイバ固定基
板とを有することを特徴とする請求項１に記載の光ファ
イバ整列体。5. An optical fiber alignment board having an optical fiber fixing portion having a guide groove for installing an optical fiber on an upper surface, and a coating fixing portion for mounting and fixing an optical fiber coating portion via a step with the optical fiber fixing portion. Or, after installing the optical fiber on the alignment substrate, holding the optical fiber for the purpose of holding and fixing the optical fiber, and holding the optical fiber coating portion via a step with the optical fiber fixing portion and the optical fiber fixing portion An optical fiber fixing substrate having a coating fixing portion to be fixed, wherein an end of the optical fiber fixing portion has an optical fiber alignment substrate and an optical fiber fixing substrate having a cutout or a curved surface portion. 2. The optical fiber alignment body according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20047896A JPH1048476A (en) | 1996-07-30 | 1996-07-30 | Optical fiber-aligned body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20047896A JPH1048476A (en) | 1996-07-30 | 1996-07-30 | Optical fiber-aligned body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1048476A true JPH1048476A (en) | 1998-02-20 |
Family
ID=16424990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20047896A Pending JPH1048476A (en) | 1996-07-30 | 1996-07-30 | Optical fiber-aligned body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1048476A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11202155A (en) * | 1998-01-12 | 1999-07-30 | Sumitomo Electric Ind Ltd | Optical fiber connector |
| JP2005227574A (en) * | 2004-02-13 | 2005-08-25 | Fujikura Ltd | V-grooved substrate, manufacturing method therefor, and optical fiber array |
-
1996
- 1996-07-30 JP JP20047896A patent/JPH1048476A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11202155A (en) * | 1998-01-12 | 1999-07-30 | Sumitomo Electric Ind Ltd | Optical fiber connector |
| JP2005227574A (en) * | 2004-02-13 | 2005-08-25 | Fujikura Ltd | V-grooved substrate, manufacturing method therefor, and optical fiber array |
| JP4570885B2 (en) * | 2004-02-13 | 2010-10-27 | 株式会社フジクラ | Manufacturing method of V-groove substrate |
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