JPH0449924B2 - - Google Patents
Info
- Publication number
- JPH0449924B2 JPH0449924B2 JP59268971A JP26897184A JPH0449924B2 JP H0449924 B2 JPH0449924 B2 JP H0449924B2 JP 59268971 A JP59268971 A JP 59268971A JP 26897184 A JP26897184 A JP 26897184A JP H0449924 B2 JPH0449924 B2 JP H0449924B2
- Authority
- JP
- Japan
- Prior art keywords
- optical
- branching
- optical fiber
- coupling
- fibers
- 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 - Lifetime
Links
Landscapes
- Mechanical Coupling Of Light Guides (AREA)
Description
本発明は光通信部門において用いられる光フア
イバの光分岐結合部の製造方法に関する。
The present invention relates to a method of manufacturing an optical branching/coupling section of an optical fiber used in the optical communications sector.
従来、光通信部門で光を分岐する光分岐装置と
して、レンズ，ハーフミラー等の光学部品を用い
たいわゆるマイクロオプテイクス技術による装置
が採用されていた。しかしこの装置の場合光学部
品の精度および各部品間の相対的な位置精度が損
失特性に大きな影響を与えるため、高精度の部品
と位置合わせが必要とされ、その製造は難しく高
い経費がかかつた。また光が各光学部品を通過す
る際に生ずる光の反射および吸収によつて、損失
が増加するという問題もある。
そこでこの問題を解消するために、複数の光フ
アイバを互いに平行に並べて接触させ、この接触
部を放電して曝らすなどして加熱融着させて光分
岐結合部を製造し、この光分岐結合部の切断面を
光分岐結合すべき別の光フアイバの光分岐結合部
の切断面に突き合わせて融着接続して光分岐結合
を行なうことが提案されている。この場合前述の
光学部品を必要としない点で有利であるが、種々
の分岐特性を得るための光分岐結合部の長さの制
御が困難であり、また光フアイバ内でのコアの急
激な変形によつて損失が増大するという問題があ
る。
Conventionally, devices based on so-called micro-optics technology using optical components such as lenses and half mirrors have been employed as optical branching devices for branching light in the optical communications sector. However, in the case of this device, the accuracy of the optical components and the relative positional accuracy of each component have a large effect on the loss characteristics, so high-precision components and alignment are required, which is difficult and expensive to manufacture. Ta. There is also the problem that losses increase due to reflection and absorption of light that occurs when light passes through each optical component. Therefore, in order to solve this problem, a plurality of optical fibers are lined up parallel to each other and brought into contact with each other, and the contact parts are exposed by electric discharge and then heated and fused to manufacture an optical branching coupling part. It has been proposed to perform optical branching and coupling by fusion splicing the cut surface of the coupling portion against the cut surface of the optical branching and coupling portion of another optical fiber to be optically branched and coupled. This case is advantageous in that it does not require the above-mentioned optical components, but it is difficult to control the length of the optical branching/coupling part to obtain various branching characteristics, and the core may undergo rapid deformation within the optical fiber. There is a problem in that losses increase due to
本発明の目的は、光フアイバ以外の光学部品を
必要としない上述の加熱融着による光分岐結合部
の製造方法から出発して、光フアイバのコアの急
激な変形が避けられるような光分岐結合部の製造
方法を提供することにある。
An object of the present invention is to create an optical branching/coupling unit that avoids rapid deformation of the core of the optical fiber, starting from the above-mentioned method for manufacturing an optical branching/coupling unit by heat fusion, which does not require optical parts other than optical fibers. The object of the present invention is to provide a method for manufacturing a part.
本発明によれば上記の目的は、
互いに平行に配置された複数Ｎ本の光フアイバ
の端面と、このＮ本の光フアイバと対向する他の
一本の光フアイバの端面とを接触させ、この接触
部を加熱融着手段を用いて加熱融着した後、当該
融着接続部を境にＮ本の光フアイバ側を所定の長
さ寸法だけ加熱するように前記加熱融着手段に対
して前記Ｎ本の光フアイバと他の一本の光フアイ
バとをその軸線方向に移動し、前記一本の光フア
イバより大きな径を有すると共になだらかなテー
パ形状を呈する光分岐結合領域部を形成し、更
に、この光分岐結合領域部を加熱して所定の径を
有する部分で溶断し、次いで、新たな一本の光フ
アイバを前記溶断された光分岐結合領域部と対向
するように配置し、前記光分岐結合領域部の溶断
面と前記新たな一本の光フアイバの端面とを接触
させ、前記光分岐結合領域部と新たな一本の光フ
アイバとを融着接続することによりＮ：１の光分
岐結合部を形成することにより達成される。
According to the present invention, the above object is to bring the end faces of a plurality of N optical fibers arranged parallel to each other into contact with the end face of another optical fiber facing the N optical fibers; After the contact portion is heat-sealed using the heat-sealing means, the heat-sealing means is heated so as to heat the N optical fibers by a predetermined length dimension with the fusion splicing portion as a boundary. moving the N optical fibers and one other optical fiber in their axial directions to form an optical branching/coupling region having a diameter larger than that of the one optical fiber and exhibiting a gently tapered shape; , this optical branching/coupling region is heated to fuse and cut it at a portion having a predetermined diameter, and then a new optical fiber is placed so as to face the fused optical branching/coupling region, and the optical fiber is By bringing the melted surface of the branching/coupling region into contact with the end face of the new optical fiber and fusion splicing the optical branching/coupling region and the new optical fiber, N:1 light is produced. This is accomplished by forming branch connections.
第１図はこの発明の実施例を示すもので、２本
の光フアイバ１，２の心線部を保持する心線クラ
ンプ４と１本の光フアイバ３の心線部を保持する
心線クランプ５は、図示していないモータによつ
て光フアイバ１，２，３の長手方向に移動がで
き、光フアイバ１，２が心線クランプ４の移動に
ともなつて互いに接触を保つたまま移動できるよ
うに光フアイバガイド６が配置され、光フアイバ
３が心線クランプ５の移動にともなつて常に光フ
アイバ１，２の中央に位置するように光フアイバ
ガイド７が配置され、放電により光フアイバ１，
２，３を加熱できるように放電電極８，９が光フ
アイバ１，２，３を挟んで対向して配置されてい
る。
第２図は加熱融着時の光フアイバ１，２，３の
形状変化を時間別に示したものである。図に示す
光フアイバ１，２，３を配置し、放電電極８，９
の間に電圧をかけると、同図ａに示すように放電
１１が生じ光フアイバ１，２，３は同図ｂに示す
ように融着される。再度放電１１を生じさせて、
この融着接続部を境に光フアイバ１，２の側を加
熱するように、心線クランプ４，５を左方向へ移
動させると、同図ｃに示すような光分岐結合領域
部１０が形成される。なお、この間、心線クラン
プ４の送り速度V1と心線クランプ５の送り速度
V2を異ならせ（V1＜V2）て光フアイバに適当な
引つ張り力を与えるようにする。次に、心線クラ
ンプ４，５を右方向へ移動させ、光分岐結合領域
部１０を放電電極８，９の間に置いて放電１１を
生じさせると、同図ｄに示すように光分岐結合領
域部１０は溶断され、新たな光フアイバ３との接
続される溶断面１２が形成される。この溶断面１
２に新たな光フアイバ１３を融着接続して光分岐
結合部を得る。
以上この発明の実施例について説明したが、分
岐結合部は１対２とは限らず、１対３以上でも製
造が可能なことは明らかである。また、加熱融着
手段も放電以外に、レーザ，ガストーチなども使
用することができる。
FIG. 1 shows an embodiment of the present invention, in which a fiber clamp 4 holds the core portions of two optical fibers 1 and 2 and a fiber clamp 4 holds the core portion of one optical fiber 3. 5 can move the optical fibers 1, 2, and 3 in the longitudinal direction by a motor (not shown), and the optical fibers 1, 2 can move while maintaining contact with each other as the core wire clamp 4 moves. The optical fiber guide 6 is arranged as shown in FIG. ，
Discharge electrodes 8 and 9 are arranged facing each other with the optical fibers 1, 2, and 3 in between so as to heat the optical fibers 2 and 3. FIG. 2 shows changes in the shape of the optical fibers 1, 2, and 3 over time during heat fusion. The optical fibers 1, 2, 3 shown in the figure are arranged, and the discharge electrodes 8, 9
When a voltage is applied between them, a discharge 11 is generated as shown in FIG. Generate the discharge 11 again,
When the fiber clamps 4 and 5 are moved to the left so as to heat the optical fibers 1 and 2 with this fusion splice as a boundary, an optical branching and coupling region 10 as shown in FIG. be done. During this time, the feed speed V 1 of the core wire clamp 4 and the feed speed of the core wire clamp 5 are
V 2 is varied (V 1 <V 2 ) to provide an appropriate tensile force to the optical fiber. Next, when the core wire clamps 4 and 5 are moved to the right and the optical branching/coupling area 10 is placed between the discharge electrodes 8, 9 to generate a discharge 11, the optical branching/coupling area 10 is placed between the discharge electrodes 8, 9 to generate a discharge 11. The region 10 is fused and a fused cross section 12 to be connected to a new optical fiber 3 is formed. This melting surface 1
A new optical fiber 13 is fusion-spliced to 2 to obtain an optical branching/coupling section. Although the embodiments of the present invention have been described above, it is clear that the number of branching joints is not limited to 1:2, and it is possible to manufacture branching joints with 1:3 or more. In addition to electric discharge, a laser, a gas torch, or the like can also be used as the heating and fusing means.
以上の説明から明らかなようにこの発明によれ
ば、複数の光フアイバを並列に接触させて保持
し、接触部を加熱融着しつつ光フアイバを連続的
に移動させて光フアイバよりも径の太い光分岐結
合部を形成したことにより、光フアイバ内のコア
の急激な変形を緩和することができ、低損失の光
分岐結合部が得られる。更に、光分岐結合領域部
の中間を溶断することによつて、新たな光フアイ
バとの接続される溶断面を再現性よく容易に形成
することができるため、歩留りが良く熟練の必要
のない安価な光分岐結合部が得られる。
As is clear from the above description, according to the present invention, a plurality of optical fibers are held in contact with each other in parallel, and the optical fibers are continuously moved while the contact portions are heated and fused. By forming the thick optical branching/coupling portion, rapid deformation of the core within the optical fiber can be alleviated, and an optical branching/coupling portion with low loss can be obtained. Furthermore, by fusing the middle of the optical branching and coupling region, it is possible to easily form a fusing cross section to be connected to a new optical fiber with good reproducibility, resulting in a high yield and low cost that does not require skill. A light branching/coupling section can be obtained.
第１図は本発明に基づく光分岐結合部の製造方
法の概略構成図、第２図は本発明に基づく光分岐
結合部の製造過程の一例の説明図である。
１，２，３，１３……光フアイバ、４，５……
心線クランプ、６，７……光フアイバガイド、
８，９……放電電極、１０……光分岐結合領域
部、１１……放電、１２……溶断面。
FIG. 1 is a schematic diagram of a method for manufacturing an optical branching/coupling section according to the present invention, and FIG. 2 is an explanatory diagram of an example of the manufacturing process of an optical branching/coupling section according to the present invention. 1, 2, 3, 13...optical fiber, 4, 5...
Core wire clamp, 6, 7...optical fiber guide,
8, 9...discharge electrode, 10...optical branching/coupling region, 11...discharge, 12...melting surface.
Claims (1)
バの端面と、このＮ本の光フアイバと対向する他
の一本の光フアイバの端面とを接触させ、この接
触部を加熱融着手段を用いて加熱融着した後、当
該融着接続部を境にＮ本の光フアイバ側を所定の
長さ寸法だけ加熱するように前記加熱融着手段に
対して前記Ｎ本の光フアイバと他の一本の光フア
イバとをその軸線方向に移動し、前記一本の光フ
アイバより大きな径を有すると共になだらかなテ
ーパ形状を呈する光分岐結合領域部を形成し、更
に、この光分岐結合領域部を加熱して所定の径を
有する部分で溶断し、次いで、新たな一本の光フ
アイバを前記溶断された光分岐結合領域部と対向
するように配置し、前記光分岐結合領域部の溶断
面と前記新たな一本の光フアイバの端面とを接触
させ、前記光分岐結合領域部と新たな一本の光フ
アイバとを融着接続することによりＮ：１の光分
岐結合部を形成するようにしたことを光分岐結合
部の製造方法。1. The end faces of a plurality of N optical fibers arranged in parallel to each other are brought into contact with the end face of another optical fiber facing the N optical fibers, and this contact portion is bonded using heat fusing means. After heating and fusing the N optical fibers to the heat fusing means, the N optical fibers and the other fibers are heated by a predetermined length with the fusion splicing portion as a boundary. The optical fiber of the book is moved in the axial direction to form a light branching/coupling region having a diameter larger than that of the single optical fiber and exhibiting a gently tapered shape, and further heating this light branching/coupling region. Then, a new optical fiber is placed so as to face the fused optical branching/coupling area, so that the fused surface of the optical branching/coupling area and the An N:1 optical branching/coupling section was formed by bringing the end face of a new optical fiber into contact with each other and fusion-splicing the optical branching/coupling region and the new optical fiber. This is the manufacturing method of the optical branching and coupling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26897184A JPS61147206A (en) | 1984-12-20 | 1984-12-20 | Production of optical branching and coupling part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26897184A JPS61147206A (en) | 1984-12-20 | 1984-12-20 | Production of optical branching and coupling part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61147206A JPS61147206A (en) | 1986-07-04 |
| JPH0449924B2 true JPH0449924B2 (en) | 1992-08-12 |
Family
ID=17465847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26897184A Granted JPS61147206A (en) | 1984-12-20 | 1984-12-20 | Production of optical branching and coupling part |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61147206A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3236810A1 (en) * | 1981-10-07 | 1983-04-21 | International Standard Electric Corp., 10022 New York, N.Y. | METHOD FOR PRODUCING A COUPLER |
-
1984
- 1984-12-20 JP JP26897184A patent/JPS61147206A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61147206A (en) | 1986-07-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term |