JPH02236508A - Connecting structure for optical waveguide - Google Patents
Connecting structure for optical waveguideInfo
- Publication number
- JPH02236508A JPH02236508A JP5637289A JP5637289A JPH02236508A JP H02236508 A JPH02236508 A JP H02236508A JP 5637289 A JP5637289 A JP 5637289A JP 5637289 A JP5637289 A JP 5637289A JP H02236508 A JPH02236508 A JP H02236508A
- Authority
- JP
- Japan
- Prior art keywords
- optical waveguide
- ferrule
- optical fiber
- center
- optical
- 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
- 230000003287 optical effect Effects 0.000 title claims abstract description 46
- 239000013307 optical fiber Substances 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 description 12
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 102000001690 Factor VIII Human genes 0.000 description 1
- 108010054218 Factor VIII Proteins 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- G02B6/4219—Mechanical fixtures for holding or positioning the elements relative to each other in the couplings; Alignment methods for the elements, e.g. measuring or observing methods especially used therefor
-
- 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
- G02B6/26—Optical coupling means
- G02B6/30—Optical coupling means for use between fibre and thin-film device
-
- 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
- G02B6/3834—Means for centering or aligning the light guide within the ferrule
- G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〔概 要〕
光導波路と光ファイバとを位置合わせして接続するため
の光導波路用接続構造に関し、作業者の高度な技能等を
特に必要とすることなく、光導波路と光ファイバとの中
心位置決め作業を極めて簡便且つ短時間のうちに可能と
する光導波路用接続構造を提供することを目的とし、中
心から所定距離だけ偏心した位置に断面略円形の光導波
路を有する円柱状軸部と、光ファイバを保持した断面略
円形のフェルールとを、これら円柱状軸部とフェルール
とに対応ずる径のボアを有するスリーブ内にその両端か
ら挿入し端而どうしを突き合わせて接合する光導波路用
接続構造であって、上記光ファイバはフェルールの中心
に対して上記光導波路の偏心量に対応する量だけ偏心し
て位置せしめられるように構成する。[Detailed Description of the Invention] [Summary] Regarding an optical waveguide connection structure for aligning and connecting an optical waveguide and an optical fiber, the optical waveguide The purpose of the present invention is to provide an optical waveguide connection structure that enables the center positioning work between an optical fiber and an optical fiber to be performed extremely easily and in a short time, and has an optical waveguide having a substantially circular cross section at a position eccentric from the center by a predetermined distance. A cylindrical shaft portion and a ferrule with a substantially circular cross section holding an optical fiber are inserted from both ends into a sleeve having a bore with a diameter corresponding to the cylindrical shaft portion and the ferrule, and the ends are butted together to join. In the optical waveguide connection structure, the optical fiber is positioned eccentrically with respect to the center of the ferrule by an amount corresponding to the eccentricity of the optical waveguide.
本発明は、光導波路が形成された基板と光ファイバとを
極めて容易に中心位置決め・接続し得る光導波路用接続
構造に関する。The present invention relates to a connection structure for an optical waveguide that allows extremely easy center positioning and connection of a substrate on which an optical waveguide is formed and an optical fiber.
〔従来の技術］
従来、光導波路が形成された基板と光ファイバとを端面
で接続して光モジュールを製作するに際して、先ず基仮
を固定しておき、光ファイノ＼端部を保持するフェルー
ルを微動台にて動かしながらこの固定基板の光導波路の
中心と光フ７イノ＼の中心とを一致させ、そして端面間
に接着剤を介在させることにより両者の接続固定を行っ
ている。[Prior Art] Conventionally, when manufacturing an optical module by connecting a substrate on which an optical waveguide is formed and an optical fiber at their end faces, the base is first fixed, and then a ferrule is attached to hold the end of the optical fiber. The center of the optical waveguide of this fixed substrate is made to coincide with the center of the optical fiber 7 while being moved by a fine movement table, and the connection and fixation of the two is performed by interposing an adhesive between the end faces.
（発明が解決しようとする課題〕
しかるに、固定した基板端面に対してフェルール（光フ
ァイハ）端面を摺り合わせて微動させＬ記中心位置決め
を行うとき、フェルールを動かすその方向及び量は作業
者の勘に大きく依存するため確実性がなく、しかも高い
精度が要求されるこの作業はいきおい長時間化せさるを
えなかった。(Problem to be Solved by the Invention) However, when positioning the center of letter L by sliding the end face of a ferrule (optical fiber) against the end face of a fixed substrate and moving it slightly, the direction and amount of movement of the ferrule is determined by the operator's intuition. This work was not reliable as it was highly dependent on the process, and required high precision, making it extremely time consuming.
このような点に鑑み本発明においては、作業晋の技能・
伎仙等に依存せずに極めて容易に且つ短時間のうちに上
記中心位置決め作業を可能とする、光導波路が形成され
た基板と光ファイバとを接続するための光導波路用接続
構造を提供することを目的とする。In view of these points, in the present invention, the skill and skill of the work
To provide an optical waveguide connection structure for connecting an optical fiber to a substrate on which an optical waveguide is formed, which allows the above-mentioned center positioning work to be performed extremely easily and in a short time without depending on the optical fiber. The purpose is to
上記課題を解決するために本発明に係る光導波路用接続
構造は、中心から所定距離だけ偏心した位置に断面略円
形の光導波路を有する円柱状軸部と、光ファイバを保持
した断面略円形のフェルールとを、これら円柱状軸部と
フェルールとに対応する径のボアを有するスリーブ内に
その両端から挿入し端面どうしを突き合わせて接合する
光導波路用接続構造であって、上記光ファイバはフェル
ールの中心に対して上記光導波路の偏心量に対応する量
だけ偏心して位置せしめられることを構成上の特徴とす
る。In order to solve the above problems, the optical waveguide connection structure according to the present invention includes a cylindrical shaft portion having an optical waveguide having a substantially circular cross section at a position eccentric from the center by a predetermined distance, and a cylindrical shaft portion having a substantially circular cross section holding an optical fiber. An optical waveguide connection structure in which a ferrule is inserted from both ends into a sleeve having a bore with a diameter corresponding to the cylindrical shaft portion and the ferrule, and the end surfaces are butted and joined. The optical waveguide is characterized in that it is positioned eccentrically relative to the center by an amount corresponding to the eccentricity of the optical waveguide.
〔作 用］
円柱状軸部に対する光導波路の偏心量と、フェルールの
中心に対する光ファイハの偏心枇、とが等しいため、両
者をスリーブ内にその両端から挿入し端面どうしを突き
合わせた際に、両者を相対回転させれば光軸が一致する
取付角度位置が必ず存在する。そのときに回転を止め両
者を固定すればよい。これにより、光導波路と光ファイ
バとの中心位置決めが極めて機械的に容易に行うことが
できる。[Function] Since the amount of eccentricity of the optical waveguide with respect to the cylindrical shaft portion and the eccentricity of the optical fiber with respect to the center of the ferrule are equal, when both are inserted into the sleeve from both ends and their end faces abutted, both If you rotate them relative to each other, there will always be a mounting angle position where the optical axes coincide. At that time, the rotation should be stopped and both should be fixed. Thereby, the center positioning of the optical waveguide and the optical fiber can be performed mechanically and easily.
以下、図示実施例に基づき本発明を説明する。 The present invention will be explained below based on illustrated embodiments.
第１図は本発明に係る光導波路用ファイハコネクタの一
実施例の纒断面図、、第２及び３図は第１図のそれぞれ
ト」線及び■一■線に沿い矢印方向から見た断面図であ
る。Fig. 1 is a cross-sectional view of an embodiment of the FIF connector for optical waveguides according to the present invention, and Figs. 2 and 3 are views taken from the direction of the arrows along the ``T'' line and the ``1'' line in Fig. 1, respectively. FIG.
第１図を参照するに、１は光導波路２がその上側に形成
された断面が半円形の基板であり、例えばステンレス綱
で形成される。この基板ｌの一端（図で右端）には光導
波路２を挟むように基板１と同様な断面が半円形のアダ
プタ３が固着され、このアダプタ３とこれが固着された
基板１の端部とにより断面が真円の円柱状軸部４が形成
される。Referring to FIG. 1, reference numeral 1 denotes a substrate having a semicircular cross section on which an optical waveguide 2 is formed, and is made of, for example, stainless steel. An adapter 3 having a semicircular cross section similar to that of the substrate 1 is fixed to one end of the substrate l (the right end in the figure) so as to sandwich the optical waveguide 2 therebetween. A cylindrical shaft portion 4 having a perfect circular cross section is formed.
そしてこの円柱状軸部４はコネクタスリーブ５の円柱状
嵌合孔部５ａにすっぽり挿入されて固着される。この嵌
着状態を示す第２図を参照すると、光導波路２は、基板
１に関して幅Ａ，深さＡの略半円形の断面形状を有して
いるが、その中心は基板１及びアダプタ３から成る円柱
状軸部４（あるいはこれが嵌挿される円柱状嵌合孔部５
ａ）の回転中心Ｏ（円の中心）から略Ａ／２だけずれて
いると概略考えることができる。The cylindrical shaft portion 4 is completely inserted into the cylindrical fitting hole 5a of the connector sleeve 5 and fixed. Referring to FIG. 2 showing this fitted state, the optical waveguide 2 has a substantially semicircular cross-sectional shape with a width A and a depth A with respect to the substrate 1, but its center is located from the substrate 1 and the adapter 3. A cylindrical shaft portion 4 (or a cylindrical fitting hole portion 5 into which it is fitted)
It can be roughly considered that it is shifted by approximately A/2 from the rotation center O (center of the circle) in a).
一方、コネクタスリーブ５の円柱状嵌合孔部５ａのうち
円柱状軸部４が挿入されていない残りの部分には、光フ
ァイハ７を略中央に保持する円柱状フェルール８が嵌着
され、円柱状軸部４と円柱状フェルール８（光ファイハ
７）とが端面どうじで当接せしめられる。この嵌着状態
を示す第３図を参照するに、本発明の特徴によれば光フ
ァイハ７の中心は円柱状フヱルール８（あるいはこれが
嵌挿される円柱状嵌合札部５ａ）の回転中心Ｏから１７
２だけずらされている。On the other hand, a cylindrical ferrule 8 that holds the optical fiber 7 approximately in the center is fitted into the remaining portion of the cylindrical fitting hole 5a of the connector sleeve 5 into which the cylindrical shaft portion 4 is not inserted. The columnar shaft portion 4 and the columnar ferrule 8 (optical fiber 7) are brought into contact with each other at their end surfaces. Referring to FIG. 3 showing this fitted state, according to the feature of the present invention, the center of the optical fiber 7 is located from the rotation center O of the cylindrical fiber rule 8 (or the cylindrical mating tag portion 5a into which it is fitted). 17
It is shifted by 2.
以上の構成によれば、光導波路２及び光ファイバ７を接
続するためのコネクタスリーブ５に対して、その嵌合孔
部５ａの回転中心から両者いずれの中心もずれてはいる
ものの、そのずれ酢（偏心量）が等しいために両者の光
軸は一致する、すなわち中心位置決めが正確に行われる
ことになる。According to the above configuration, although the centers of the connector sleeve 5 for connecting the optical waveguide 2 and the optical fiber 7 are offset from the rotation center of the fitting hole portion 5a, Since the (amounts of eccentricity) are equal, the optical axes of the two coincide, that is, the center positioning is performed accurately.
このようにして接続する工程を例えば第４図に示す。先
ず、コネクタスリーブ５の嵌合孔部５ａに対して基板１
及びアダプタから成る円柱状軸部４を挿入して固定する
（第４図（ａ））。次いで、コネクタスリーブ５の嵌合
札部５ａに対して他方側から円柱状フェルール８を挿入
し、このフェルール８を円柱状軸部４に当接させる。そ
して、コ不クタスリーブ５の嵌合札部５ａに対してフェ
ルール８を相対回転させる（同（ｂ））。この際、光フ
ァイバ７及び光導波路２のいずれか一方（発光側）から
いずれか他方（受光側）に光を送り、例えば受光側の光
量をモニタしながら光量が最大となる位置を見つけるこ
とにより両者の最適な取付角度が求まる。すなわち、コ
ネクタスリーブ５の嵌合札部５ａに対する両者のずれ量
が等しいためにフェルール８を相対回転させれば必ず両
者の光軸が一致するときがある。この時フェルール８の
回転を止め、コネクタスリーブ５に対してフェルール８
を固定すればよい。尚フェルール８側を固定とし、導波
路２側を回転させてもよい。The process of connecting in this manner is shown in FIG. 4, for example. First, the board 1 is inserted into the fitting hole 5a of the connector sleeve 5.
and a cylindrical shaft portion 4 consisting of an adapter are inserted and fixed (FIG. 4(a)). Next, the cylindrical ferrule 8 is inserted into the mating tag portion 5a of the connector sleeve 5 from the other side, and the ferrule 8 is brought into contact with the cylindrical shaft portion 4. Then, the ferrule 8 is rotated relative to the fitting tag portion 5a of the sleeve 5 (see (b)). At this time, by sending light from either the optical fiber 7 or the optical waveguide 2 (the light emitting side) to the other (the light receiving side), for example, by monitoring the light amount on the light receiving side and finding the position where the light amount is maximum. Find the optimal mounting angle for both. That is, since the amount of displacement between the connector sleeve 5 and the fitting tag portion 5a is equal, there are cases in which the optical axes of the two are always aligned when the ferrule 8 is rotated relative to each other. At this time, stop the rotation of the ferrule 8, and insert the ferrule 8 against the connector sleeve 5.
Just fix it. Note that the ferrule 8 side may be fixed and the waveguide 2 side may be rotated.
以上のように、光導波路２と光ファイバ７とを機械的に
極めて容易に中心位置決め（芯出し）できるため、従来
に比してその作業効率、能率が格段に向上する。As described above, since the optical waveguide 2 and the optical fiber 7 can be mechanically centered very easily, the working efficiency and efficiency are significantly improved compared to the conventional method.
また、端面どうしを直接接着剤にて接着することがあり
得る従来の接続方法では、光の透過部分に接着剤が侵入
して接続不良が起きる可能性があったが、本実施例にお
いてはそのような事態が起きることもない。また、接着
剤の代わりに半田又はレーザ溶接等を用いて各部をしっ
かり固定すれば、使用環境条件による接着剤劣化等の心
配は全く無用となる。In addition, in conventional connection methods in which the end faces were directly bonded with adhesive, there was a possibility that the adhesive would enter the light-transmitting part and cause a connection failure, but this example solves this problem. Such a situation never happens. Further, if each part is firmly fixed using solder or laser welding instead of adhesive, there is no need to worry about adhesive deterioration due to usage environmental conditions.
なお、基板１又はフェルール８のいずれか一方（又は両
方）を取り外したような場合でも、その位置合わせが極
めて容易なことから、実用上着脱可能と言い得る。Note that even if either one (or both) of the substrate 1 or the ferrule 8 is removed, it can be said that they can be attached and detached in practical terms because their alignment is extremely easy.
以上の如く本発明によれば、作業者の高度な技能等を特
に必要とすることな《、極めて簡便にそして短時間のう
ちに光導波路と光ファイバとの中心位置決めを行うこと
ができ、両者の接続作業の能率、効率等が向上する。As described above, according to the present invention, it is possible to perform center positioning of an optical waveguide and an optical fiber extremely easily and in a short time without requiring particularly advanced skills on the part of the operator. The efficiency and efficiency of connection work will be improved.
第１図は本発明に係る光導波路用接続構造の一実施例の
縦断面図、
第２図は第１図の■一■線に沿い矢印方向から見た一部
切欠断面図、
第３図は第１図の■−■線に沿い矢印方向から見た一部
切欠断面図、
第４図は接続工程を示す図である。
１・・・基板、 ２・・・光導波路、３・・
・アダプタ、 ４・・・円柱状軸部、５・・・
コネクタスリーブ、５ａ・・・円柱状嵌合孔部、７・・
・光ファイバ、 ８・・・円柱状フェルール。
実施例の断面図
第１図
８０・円柱状フェルール
策１図の■一■線に沿う断面
第」図の■
■線１こ沿う断面
（Ｃｌ）
（ｂ）
接続工程図
第４因
８・・・円柱状フェルールFIG. 1 is a longitudinal cross-sectional view of an embodiment of the optical waveguide connection structure according to the present invention, FIG. 2 is a partially cutaway cross-sectional view taken along the line ■1■ in FIG. 1 in the direction of the arrow, and FIG. is a partially cutaway sectional view taken along the line ■-■ in FIG. 1 in the direction of the arrow, and FIG. 4 is a diagram showing the connection process. 1... Substrate, 2... Optical waveguide, 3...
・Adapter, 4...Cylindrical shaft part, 5...
Connector sleeve, 5a...Cylindrical fitting hole, 7...
・Optical fiber, 8...Cylindrical ferrule. Cross-sectional view of the embodiment Fig. 1 80・Cylindrical ferrule cross section along line 1 in Fig. 1 Cross section along line 1 in Fig. 1 (Cl) (b) Connection process diagram 4th factor 8...・Cylindrical ferrule
Claims (1)
光導波路（２）を有する円柱状軸部（４）と、光ファイ
バ（７）を保持した断面略円形のフェルール（８）とを
、これら円柱状軸部（４）とフェルール（８）とに対応
する径のボア（５ａ）を有するスリーブ（５）内にその
両端から挿入し端面どうしを突き合わせて接合する光導
波路用接続構造であって、上記光ファイバ（７）はフェ
ルール（８）の中心に対して上記光導波路（２）の偏心
量に対応する量だけ偏心して位置せしめられることを特
徴とする光導波路用接続構造。1. A cylindrical shaft part (4) having an optical waveguide (2) with a substantially circular cross section at a position eccentric from the center by a predetermined distance, and a ferrule (8) with a substantially circular cross section holding an optical fiber (7), This optical waveguide connection structure is inserted from both ends into a sleeve (5) having a bore (5a) with a diameter corresponding to the cylindrical shaft portion (4) and the ferrule (8), and is joined by butting the end surfaces. The optical waveguide connection structure is characterized in that the optical fiber (7) is eccentrically positioned with respect to the center of the ferrule (8) by an amount corresponding to the eccentricity of the optical waveguide (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5637289A JPH02236508A (en) | 1989-03-10 | 1989-03-10 | Connecting structure for optical waveguide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5637289A JPH02236508A (en) | 1989-03-10 | 1989-03-10 | Connecting structure for optical waveguide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02236508A true JPH02236508A (en) | 1990-09-19 |
Family
ID=13025425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5637289A Pending JPH02236508A (en) | 1989-03-10 | 1989-03-10 | Connecting structure for optical waveguide |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02236508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101507U (en) * | 1991-02-12 | 1992-09-02 | 京セラ株式会社 | Optical waveguide connection structure |
| US7621673B2 (en) | 2006-02-08 | 2009-11-24 | Nippon Electric Glass Co., Ltd. | Capillary tube for holding optical fiber |
-
1989
- 1989-03-10 JP JP5637289A patent/JPH02236508A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101507U (en) * | 1991-02-12 | 1992-09-02 | 京セラ株式会社 | Optical waveguide connection structure |
| US7621673B2 (en) | 2006-02-08 | 2009-11-24 | Nippon Electric Glass Co., Ltd. | Capillary tube for holding optical fiber |
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