JP3404959B2 - Optical fiber connection member - Google Patents
Optical fiber connection memberInfo
- Publication number
- JP3404959B2 JP3404959B2 JP03318995A JP3318995A JP3404959B2 JP 3404959 B2 JP3404959 B2 JP 3404959B2 JP 03318995 A JP03318995 A JP 03318995A JP 3318995 A JP3318995 A JP 3318995A JP 3404959 B2 JP3404959 B2 JP 3404959B2
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- contact surface
- connecting member
- sleeve
- member according
- 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明は、光ファイバの端面を突
き合わせて固定する光ファイバの接続部材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical fiber connecting member for abutting and fixing end faces of an optical fiber.
【０００２】[0002]
【従来の技術】光ファイバの端面を突き合わせて固定す
る光ファイバの接続部材としては、ガラス製のキャピラ
リ、またはシリコン板等にＶ溝を施してファイバを位置
決めし、接着剤で固定したり、機械的に固定する場合が
ある（特開昭５３−１１５０８８号公報、特開平２−３
７３０７号公報）。2. Description of the Related Art As an optical fiber connecting member for abutting and fixing the end faces of an optical fiber, a glass capillary, a silicon plate, or the like is provided with a V groove to position the fiber, and the fiber is fixed with an adhesive, Sometimes fixed (Japanese Patent Application Laid-Open No. 53-115088 and Japanese Patent Application Laid-Open No. 2-3).
7307).
【０００３】[0003]
【発明が解決しようとする課題】このような光ファイバ
接続部材のうち、Ｖ溝を施しものは多心の接続に適用で
きるので有用性が高いにも係わらず、組み立て固定する
までに時間がかかること、また、キャピラリを用いた場
合は、接着剤でファイバを固定するものが多く、接着剤
が硬化するするまでに長時間を要する、という問題があ
った。そこで本発明は、かかる問題点を解決して短時間
で低損失にできる光ファイバ接続部材を提供することを
目的とする。Among such optical fiber connecting members, those provided with V-grooves can be applied to multi-core connection and are therefore highly useful, but it takes time to assemble and fix them. In addition, when a capillary is used, there are many cases in which the fiber is fixed with an adhesive, and it takes a long time for the adhesive to cure. Therefore, it is an object of the present invention to provide an optical fiber connecting member that solves such a problem and can reduce loss in a short time.
【０００４】[0004]
【課題を解決するための手段】本発明に係わる光ファイ
バ接続部材は、光ファイバのクラッド部の外形より僅か
に大きい内径を有し、内径の両端にはテーパ部を備えた
円筒状のスリーブと、スリーブを内包する筒状のスリー
ブ内包部材と、スリーブ内包部材の両端に固定され、光
ファイバを挟み込み把持するために２つ以上に分割して
形成され、夫々の内側には光ファイバを把持するための
接触面を有する光ファイバ把持部材と、光ファイバ把持
部材上をその軸方向に摺動して接触面を外周から押さえ
付けてかしめるリング状の止め具を有する。また、光フ
ァイバ把持部材の少なくとも一つの外面は、光ファイバ
の軸方向にテーパ状の傾斜を有していることが好まし
い。 An optical fiber connecting member according to the present invention has an inner diameter slightly larger than the outer shape of a clad portion of an optical fiber, and a cylindrical sleeve having tapered portions at both ends of the inner diameter. , A cylindrical sleeve enclosing member that encloses the sleeve, and is fixed to both ends of the sleeve enclosing member, and is divided into two or more parts for sandwiching and grasping the optical fiber, and the optical fiber is grasped inside each of them. And an optical fiber gripping member having a contact surface for holding, and a ring-shaped stopper that slides on the optical fiber gripping member in the axial direction and presses the contact surface from the outer periphery to caulk. Also, at least one outer surface of the optical fiber gripping member is
Preferably that are have a tapered inclination of the axial direction
Yes.
【０００５】[0005]
【作用】上記の構成によれば本発明に係わる光ファイバ
接続部材は、光ファイバを切断して所定の寸法だけ把持
部材に挿入し、止め具を移動するだけで光ファイバを挟
持して接続することができるので、接続作業に要する時
間を短縮することができる。また、光ファイバの熱膨張
係数に近い材質でスリーブ内包部材を製作することによ
り、温度変化によって光ファイバが光軸方向に位置ずれ
することを防止することができ、温度変化による接続損
失の変動を小さくできる。According to the above construction, the optical fiber connecting member according to the present invention connects the optical fiber by sandwiching the optical fiber by cutting the optical fiber and inserting it into the holding member by a predetermined size, and moving the stopper. Therefore, the time required for connection work can be shortened. Also, by manufacturing the sleeve-containing member with a material close to the thermal expansion coefficient of the optical fiber, it is possible to prevent the optical fiber from being displaced in the optical axis direction due to temperature changes, and to prevent fluctuations in splice loss due to temperature changes. Can be made smaller.
【０００６】[0006]
【実施例】以下、添付図面を参照して本発明の実施例を
説明する。なお、図面の説明において同一要素には同一
符号を付し、重複する説明を省略する。図１は本実施例
の光ファイバ接続部材に係わる構成を示す斜視図（イ）
及び縦断面図（ロ）であり、光ファイバのクラッド部５
ａの外径より僅かに大きい内径を有し、内径の両端には
テーパ部１ａを備えた円筒状のスリーブ１と、スリーブ
１とこれを内包する筒状のスリーブ内包部材２及び内包
部材２の両端には光ファイバを挟み込み把持するために
２つ以上に分割して形成され、夫々の内側には光ファイ
バを把持するための接触面３ａを有する光ファイバ把持
部材３を備え、光ファイバ把持部３上をその軸方向６に
摺動して接触面３ａを外周から押さえ付けるためのリン
グ状の止め具４を有するものである。図１では、接触面
３ａが光ファイバの被覆部５ｂを把持する状態を示した
が、クラッド部５ａを把持する場合もある。Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description of the drawings, the same elements will be denoted by the same reference symbols, without redundant description. FIG. 1 is a perspective view showing the structure of the optical fiber connecting member of this embodiment (a).
FIG. 3B is a vertical cross-sectional view (b) showing the clad portion 5 of the optical fiber.
a cylindrical sleeve 1 having an inner diameter slightly larger than the outer diameter of a and provided with tapered portions 1a at both ends of the inner diameter; The optical fiber gripping member 3 is provided at both ends and is divided into two or more parts for gripping and gripping the optical fiber. It has a ring-shaped stopper 4 for sliding on the surface 3 in the axial direction 6 and pressing the contact surface 3a from the outer periphery. Although the contact surface 3a grips the optical fiber coating 5b in FIG. 1, it may grip the cladding 5a.
【０００７】スリーブ１は、接続する２本の光ファイバ
端面を保持するためにクラッド部５ａの外径より約１μ
ｍ程度大きい内径を有する円筒体をなし、光ファイバと
同質のガラスあるいはジルコニアセラミック等によって
精密に製作される。スリーブ内径の両端には、面取り加
工を施してテーパ１ａを形成し、中央部には屈折率排出
用穴１ｂ設けている。The sleeve 1 has a diameter of about 1 μm from the outer diameter of the clad portion 5a for holding the end faces of the two optical fibers to be connected.
A cylindrical body having a large inner diameter of about m is formed, and is precisely manufactured from glass, zirconia ceramic, or the like of the same quality as the optical fiber. Both ends of the inner diameter of the sleeve are chamfered to form a taper 1a, and a refractive index discharging hole 1b is provided in the central portion.
【０００８】スリーブ内包部材２は、スリーブ１を内蔵
して保護するために設けられる。従って、スリーブ内包
部材２の熱膨張係数が２．０×１０‐6ｍ／℃以下、好
ましくは光ファイバと同じ値のものが良く、インバ合金
あるいは石英ガラスが用いられる。The sleeve-containing member 2 is provided to protect the sleeve 1 by incorporating it. Accordingly, the thermal expansion coefficient of the sleeve-containing member 2 is preferably 2.0 × 10 −6 m / ° C. or less, preferably the same value as that of the optical fiber, and Invar alloy or quartz glass is used.
【０００９】光ファイバ把持部材３は、図１に示すよう
に２つに分割して構成され、それらの先端内側に接続す
る光ファイバを固定するための接触面３ａが設けられ、
光ファイバ被覆部５ｂの挿入可能な空間を有している。
光ファイバ把持部材３の外面は光ファイバ軸方向６につ
いてテーパ状に若干寸法を変えた平面をなしている。光
ファイバ把持部材３上をその軸方向に沿ってリング状の
止め具４を摺動することによって爪部のかしめ量を調整
するためである。光ファイバ把持部材の爪部材は耐食
性、加工性の良いアルミニウム合金又は熱膨張係数の小
さい液晶ポリマ、例えばポリプラスチックス（株）製の
商品名ベクトラが適当である。光ファイバ把持部材３と
スリーブ内包部材２は、ねじ等によって一体に結合され
ている。図２は、本発明の光接続部材の別の態様の実施
例を示す斜視図である。光接続部材３は、３つに分割し
て構成されている。光ファイバ３の外面は、光ファイバ
軸方向にテーパ状に寸法を変えた曲面をなしている。光
ファイバ把持部材３上をその軸方向に沿ってリング状の
止め具４を摺動することによってかしめ量を調整する。 As shown in FIG. 1, the optical fiber holding member 3 is divided into two parts, and is provided with a contact surface 3a for fixing the optical fiber connected to the inside of the tip thereof.
It has a space into which the optical fiber coating 5b can be inserted.
The outer surface of the optical fiber gripping member 3 is a flat surface with a slightly tapered dimension in the optical fiber axial direction 6. This is for adjusting the amount of caulking of the claws by sliding the ring-shaped stopper 4 on the optical fiber holding member 3 along its axial direction. The claw member of the optical fiber holding member is an aluminum alloy having good corrosion resistance and workability, or a liquid crystal polymer having a small coefficient of thermal expansion, for example, made of Polyplastics Co., Ltd.
The product name Vectra is suitable. The optical fiber gripping member 3 and the sleeve containing member 2 are integrally coupled by a screw or the like. FIG. 2 shows an embodiment of another embodiment of the optical connecting member of the present invention.
It is a perspective view which shows an example. The optical connecting member 3 is divided into three
Is configured. The outer surface of the optical fiber 3 is an optical fiber.
It has a curved surface that changes its dimensions in a taper shape in the axial direction. light
A ring shape is formed on the fiber holding member 3 along its axial direction.
The amount of crimping is adjusted by sliding the stopper 4.
【００１０】次に、光ファイバを接続する方法について
説明する。まず、光ファイバの被覆をリムーバ等によっ
て除去し有機溶剤でクラッド部５ａの表面を拭き、所定
の長さに切断する。スリーブ１内には、予め屈折率整合
剤を注入しておく。この整合剤は屈折率が光ファイバの
コアに近いもので、耐環境性のよいものを使用する。光
ファイバ把持部材３の導入口３ｂより光ファイバを所定
の長さ挿入したっところで光ファイバ被覆部５ｂをかし
め、挟持する。接続される他の光ファイバについても同
様にかしめて接続する。Next, a method of connecting optical fibers will be described. First, the coating of the optical fiber is removed by a remover or the like, the surface of the clad portion 5a is wiped with an organic solvent, and the optical fiber is cut into a predetermined length. A refractive index matching agent is previously injected into the sleeve 1. This matching agent has a refractive index close to that of the core of the optical fiber and has a good environment resistance. The optical fiber coating portion 5b is caulked and clamped at a position where the optical fiber is inserted from the introduction port 3b of the optical fiber holding member 3 by a predetermined length. The other optical fibers to be connected are also caulked and connected.
【００１１】このときのかしめの程度は図３（イ）〜
（ハ）に示すように、接触面が被覆部を破壊せずにかし
める程度乃至被覆部を破壊するがクラッド部を破壊しな
い程度にかしめる場合、あるいは光ファイバ把持部材の
接触面が光ファイバのクラッド上から把持した状態で、
接触面が塑性変形しクラッドが破壊しない程度にかしめ
る場合がある。かしめの方法は止め具を矢印６の方向に
移動して行なう。The degree of caulking at this time is shown in FIG.
As shown in (c), when the contact surface is caulked without breaking the covering portion or the covering portion is broken but the clad portion is not broken, or when the contact surface of the optical fiber holding member is the optical fiber. While grasping from above the clad,
The contact surface may be caulked to such an extent that the contact surface is not plastically deformed and the clad is not destroyed. The caulking method is performed by moving the stopper in the direction of arrow 6.
【００１２】上記の接続作業は、従来接続部材を組み立
てるために４分以上と接着剤が硬化する時間を要してい
たが、光ファイバの被覆除去等の全ての工程を含めて３
分以内で行なうことができた。また、接続損失は０．１
ｄＢ以内、−３０℃〜＋７０℃の範囲の温度サイクル試
験において、接続損失の変化は０．１ｄＢ以内であっ
た。The above-mentioned connection work has required 4 minutes or more and a time for the adhesive to harden in order to assemble the connection member, but it is 3 times including all steps such as the removal of the coating of the optical fiber.
It could be done within minutes. The connection loss is 0.1
In the temperature cycle test in the range of -30 ° C to + 70 ° C within dB, the change in connection loss was within 0.1 dB.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
光ファイバを切断して所定の寸法だけ把持部材に挿入
し、止め具を移動するだけで光ファイバを挟持し、接続
することが可能であり、接続作業に要する時間を短縮す
ることができる。従って、光ファイバ通信網における非
常時の応急、復旧処置には特に適した接続部材である。
また、光ファイバの熱膨張係数に近い材質でスリーブ内
包部材を製作することにより、温度変化によって光ファ
イバが光軸方向に位置ずれすることを防止することがで
き、温度変化による接続損失の変動を小さくできる。さ
らに、内部に屈折率整合剤を充填しているために、接続
部の光信号の損失が小さくすることができる。As described above, according to the present invention,
The optical fiber can be clamped and connected by simply cutting the optical fiber and inserting the optical fiber into the gripping member by a predetermined size, and moving the stopper, thereby shortening the time required for the connection work. Therefore, it is a connection member particularly suitable for emergency and recovery measures in an optical fiber communication network.
Also, by manufacturing the sleeve-containing member with a material close to the thermal expansion coefficient of the optical fiber, it is possible to prevent the optical fiber from being displaced in the optical axis direction due to temperature changes, and to prevent fluctuations in splice loss due to temperature changes. Can be made smaller. Furthermore, since the inside is filled with the refractive index matching agent, the loss of the optical signal at the connection portion can be reduced.
【図１】本実施例の光ファイバ接続部材に係わる構成を
示す斜視図（イ）及び縦断面図である。FIG. 1 is a perspective view (a) and a vertical sectional view showing a configuration relating to an optical fiber connecting member of the present embodiment.
【図２】本実施例の他の光ファイバ接続部材に係わる構
成を示す斜視図である。FIG. 2 is a perspective view showing a configuration relating to another optical fiber connecting member of the present embodiment.
【図３】爪部が光ファイバをかしめる状態を示す断面図
である。FIG. 3 is a cross-sectional view showing a state in which a claw portion crimps an optical fiber.
１：スリーブ １ａ：テーパ １ｂ：穴 ２：スリーブ内包部材 ３：光ファイバ把持部材 ３ａ：接触面 ３ｂ：導入口 ４：止め具 ５：光ファイバ ５ａ：クラッド部 ５ｂ：被覆部 ６：止め具の移動方向 1: Sleeve 1a: taper 1b: hole 2: Sleeve inclusion member 3: Optical fiber gripping member 3a: contact surface 3b: Inlet port 4: Stop 5: Optical fiber 5a: Clad part 5b: coating 6: Moving direction of the stopper
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平２−37307（ＪＰ，Ａ) 特開 平３−39909（ＪＰ，Ａ) 特開 平５−323150（ＪＰ，Ａ) 特開 昭52−142531（ＪＰ，Ａ) 実開 昭58−109710（ＪＰ，Ｕ) 実開 昭60−122909（ＪＰ，Ｕ) 実開 昭63−35007（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 6/24 ─────────────────────────────────────────────────── --- Continuation of front page (56) References JP-A-2-37307 (JP, A) JP-A-3-39909 (JP, A) JP-A-5-323150 (JP, A) JP-A-52-1 142531 (JP, A) Actually open 58-109710 (JP, U) Actually open 60-122909 (JP, U) Actually open 63-35007 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB name) G02B 6/24
Claims (7)
に大きい内径を有し、内径の両端にはテーパー部を備え
た円筒状のセラミックあるいはガラスで形成されたスリ
ーブと、該スリーブを内包する筒状のスリーブ内包部材
と、該スリーブ内包部材の両端に固定され、光ファイバ
を挟み込み把持するために２つ以上に分割して形成さ
れ、夫々の内側には光ファイバを把持するための接触面
を有する光ファイバ把持部材と、該光ファイバ把持部材
上をその軸方向に摺動して前記接触面を外周から押さえ
付けてかしめるリング状の止め具を有することを特徴と
する光ファイバ接続部材。1. A sleeve made of a cylindrical ceramic or glass having an inner diameter slightly larger than the outside of the cladding of an optical fiber and having tapered portions at both ends of the inner diameter. tubular sleeve enclosing member for enclosing the sleeve
And an optical fiber holding member which is fixed to both ends of the sleeve enclosing member and is formed by dividing into two or more for sandwiching and holding the optical fiber, and each of which has a contact surface inside for holding the optical fiber. When the optical fiber connecting member, characterized in that it comprises a ring-shaped stopper caulked pressed from the outer periphery of the contact surface slides the optical fiber gripping member above in the axial direction thereof.
つの外面は、光ファイバの軸方向にテーパ状の傾斜を有
することを特徴とする請求項１に記載の光ファイバ接続
部材。Wherein at least one said optical fiber gripping members
The optical fiber connecting member according to claim 1, wherein the two outer surfaces have a tapered inclination in the axial direction of the optical fiber.
光ファイバの被覆部の上から把持した状態で、前記接触
面が前記被覆部を破壊せずにかしめる程度乃至前記被覆
部を破壊するがクラッド部を破壊しない程度にかしめる
ことを特徴とする請求項２に記載の光ファイバ接続部
材。Wherein in a state where the contact surface grips over the coated portion of the optical fiber of the optical fiber gripping members, wherein the contact surface to destroy the crimping degree to the cover portion without destroying the cover portion The optical fiber connecting member according to claim 2 , wherein the caulking is performed to such an extent that the clad does not break.
光ファイバのクラッド部上から把持した状態で、前記接
触面が前記クラッド部を破壊しない程度にかしめること
を特徴とする請求項２に記載の光ファイバ接続部材。In a state where the contact surface according to claim 4, wherein the optical fiber gripping member grips the upper clad portion of the optical fiber, and wherein the contact <br/> Sawamen is crimped so as not to destroy the cladding portion The optical fiber connecting member according to claim 2 .
パ状の傾斜と前記リング状止め具の摺動位置によって調
整可能に構成されていることを特徴とする請求項３ある
いは４に記載の光ファイバ接続部材。 5. The degree to which the contact surface is caulked is the tape
It is adjusted by the inclination of the pawl and the sliding position of the ring-shaped stopper.
The optical fiber connection member according to claim 3 or 4, wherein the optical fiber connection member is configured to be adjustable.
アルミニウム又は液晶ポリマで形成されたことを特徴と
する請求項３あるいは請求項４に記載の光ファイバ接続
部材。6. The optical fiber splicing member according to claim 3 or claim 4, characterized in that the contact surface of the optical fiber gripping members are formed of aluminum or a liquid crystal polymer.
0×10-6ｍ／℃以下のインバ合金あるいは石英ガラスで
形成されたことを特徴とする請求項１に記載の光ファイ
バ接続部材。7. A thermal expansion coefficient of the sleeve enclosing member is 2.
The optical fiber connecting member according to claim 1, wherein the optical fiber connecting member is formed of Invar alloy or quartz glass having a temperature of 0 × 10 -6 m / ° C or less.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03318995A JP3404959B2 (en) | 1995-02-22 | 1995-02-22 | Optical fiber connection member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03318995A JP3404959B2 (en) | 1995-02-22 | 1995-02-22 | Optical fiber connection member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08227026A JPH08227026A (en) | 1996-09-03 |
| JP3404959B2 true JP3404959B2 (en) | 2003-05-12 |
Family
ID=12379546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03318995A Expired - Fee Related JP3404959B2 (en) | 1995-02-22 | 1995-02-22 | Optical fiber connection member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3404959B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4864658B2 (en) * | 2006-11-21 | 2012-02-01 | 株式会社東芝 | Optical fiber connection method |
-
1995
- 1995-02-22 JP JP03318995A patent/JP3404959B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08227026A (en) | 1996-09-03 |
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