JPS62103606A - Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method - Google Patents

Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method

Info

Publication number
JPS62103606A
JPS62103606A JP24363885A JP24363885A JPS62103606A JP S62103606 A JPS62103606 A JP S62103606A JP 24363885 A JP24363885 A JP 24363885A JP 24363885 A JP24363885 A JP 24363885A JP S62103606 A JPS62103606 A JP S62103606A
Authority
JP
Japan
Prior art keywords
optical fiber
fiber strands
end faces
optical fibers
coated
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
Application number
JP24363885A
Other languages
Japanese (ja)
Inventor
Isao Minamida
南田　勲
Tomoki Takahashi
高橋　朋規
Masayoshi Mishima
誠良 三島
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Furukawa Electric Co Ltd
Original Assignee
Furukawa Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Furukawa Electric Co Ltd filed Critical Furukawa Electric Co Ltd
Priority to JP24363885A priority Critical patent/JPS62103606A/en
Publication of JPS62103606A publication Critical patent/JPS62103606A/en
Pending legal-status Critical Current

Links

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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3801—Permanent connections, i.e. wherein fibres are kept aligned by mechanical means
    • G02B6/3803—Adjustment or alignment devices for alignment prior to splicing
    • G02B6/3805—Adjustment or alignment devices for alignment prior to splicing with a fibre-supporting member inclined to the bottom surface of the alignment means
    • 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch

Abstract

PURPOSE:To evade splicing defects of fusion-splicing after setting of the gap between end faces of optical fiber strands by providing a clamp means and resolving the uneveness of front ends of optical fiber strands to set accurately the gap between end faces. CONSTITUTION:In case that end faces of optical fiber strands a1-a5 and b1-b5 are butted against both faces of a butting plate 9, optical fiber strands a1-a5 and b1-b5 are moved in prescribed directions until end faces of optical fiber strands a3 and b5 having the shortest exposed length come into butting against the butting plate 9. Though end faces of optical fiber strands a1-a5 and b1-b5 are arranged on lines with the butting plate 9 between them and gaps between end faces of pairs of optical fiber strands a1 and b1-a5 and b5 are uniform by this butting optical fiber strands a1, a2, a4, a5, b1, b2, b3, and b4 other than optical fiber strands a3 and b5 having the shortest exposed length are bent. At this time, the clamping force of strand clamps 7a and 7b are increased to hold optical fiber strands a1-a5 and b1-b5 in recessed grooves 4a, 4a..., 4b, 4b... so that they are not slipped, and bends are held between coating clamps 6a and 6b and strand clamps 7a and 7b.

Description

【発明の詳細な説明】 ｆ産業上の利用分野ｊ 本発明は多心被覆光ファイバを融着手段によりスプライ
シング（永久接続）する際の端面間隔設定方法に関する
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for setting end face spacing when splicing (permanently splicing) multi-core coated optical fibers using a fusion means.

ｌ従来の技術１ 多心、栄、心を問わず、被覆光ファイバ相互を融着接続
するときは、各被覆光ファイバの端部から被覆層が除去
され、これにより露出された裸ファイバすなわち光ファ
イバ素線の端部が適当な長さに切断された後、これら光
ファイバ素線の端部が移動台、ガイド台を備えた融着接
続装置にセットされ、光ファイバ素線端面の突き合わせ
、放電加８等の操作により融着接続される。1. Prior Art 1 When fusion splicing coated optical fibers, whether multi-core, single-core, or single-core, the coating layer is removed from the end of each coated optical fiber, thereby exposing the exposed bare fiber, i.e., the optical fiber. After the ends of the fiber optics are cut to an appropriate length, the ends of the optic fibers are set in a fusion splicer equipped with a moving table and a guide stand, and the end faces of the optical fibers are butted together. Fusion splicing is performed by an operation such as a discharge application 8.

ｙ発明が解決しようとする問題点１ ところで、多心被覆光ファイバにおける光ファイバ素線
端部の切断時、光ファイバ素線端部の長さにバラツキが
生じると、各素線の端面間隔が適切に設定できなくなり
、接続部の損失増、強度劣化など、接続不良の原因とな
る。yProblem to be Solved by the Invention 1 By the way, when cutting the ends of optical fiber strands in a multi-core coated optical fiber, if variations occur in the lengths of the ends of the optical fiber strands, the distance between the end faces of each strand will be Proper settings may not be possible, leading to increased loss in the connection, deterioration of strength, etc., resulting in poor connections.

もちろん、光ファイバの融着接続作業は高度に習熟した
作業員の技能に依存して行なうのが一般であるが、熟練
者をしても上記切断時のバラツキが発生する場合があり
、そのバラツキの大きい場合は、当初から作業をやりな
おすことになる。Of course, fusion splicing of optical fibers generally depends on the skills of highly skilled workers, but even with skilled workers, the above-mentioned variations in cutting may occur, and these variations If it is large, you will have to start over from the beginning.

本発明は上記の問題点に鑑み、多心被覆光ファイバ融着
接続法において光ファイバ素線端部の長さにバラツキが
生じた場合でも、これが簡易に是正できる方法を提供し
ようとするものである。In view of the above-mentioned problems, the present invention aims to provide a method that can easily correct even if variations in the length of the ends of optical fibers occur in the multi-core coated optical fiber fusion splicing method. be.

ｒ問題点を解決するための手段１ 本発明に係る端面間隔の設定方法は上記の目的を達成す
るため、対をなす多心被覆光ファイバの端部から露出さ
れた各光ファイバ素線の端面を互いに対向させてこれら
光ファイバ素線の端面間隔を設定した後、該春光ファイ
バ素線をｌ：１で突き合わせて融着接続する方法におい
て、多心被覆光ファイバの被覆端部を被覆クランプ手段
によりスリップ不可能にクランプするとともに各光ファ
イバ素線端部を素線クランプ手段によりスリップ可能に
クランプし、つぎに、各光ファイバ素線の端面を突当板
に突き当てて上記端面間隔を設定すると同時に各光ファ
イバ素線先端の不揃いを解消し、その不揃いの解消にと
もなう光ファイバ素線の撓みを上記被覆クランプ手段と
素線クランプ手段との間で保持し、その後、素線クラン
プ手段により各光ファイバ素線をスリップ不可能にクラ
ンプすることを特徴とする。Means for Solving Problem 1 In order to achieve the above-mentioned object, the end face spacing setting method according to the present invention has the following advantages: After setting the distance between the end faces of these optical fibers by making them face each other, the optical fibers are butted against each other at a ratio of 1:1 and fusion spliced. The ends of each optical fiber are clamped in a non-slip manner by a wire clamping means, and then the end surfaces of each optical fiber are abutted against an abutment plate to set the above-mentioned end face spacing. At the same time, the misalignment of the tips of each optical fiber is eliminated, and the bending of the optical fiber due to the elimination of the misalignment is held between the coated clamping means and the wire clamping means, and then the wire clamping means It is characterized by clamping each optical fiber in a non-slip manner.

ｒ実　施　例１ 以下本発明の実施例につき、図面を参照して説１１する
。Embodiment 1 An embodiment of the present invention will be explained below with reference to the drawings.

第１図は多心被覆光ファイバＦａ、　Ｆｂの端末処理状
態を示したものであり、被覆光ファイバＦａ、　Ｆｂは
、その端部から被覆層が除去され、これにより露出され
た光ファイバ素線ａｌ−ａ５、槍〜ｂ５の端部が所定長
さに切り揃えられている。FIG. 1 shows the terminal processing state of multi-core coated optical fibers Fa and Fb, in which the coating layer is removed from the end of the coated optical fibers Fa and Fb, and the exposed optical fiber strands are thereby removed. The ends of al-a5 and spear-b5 are trimmed to a predetermined length.

第２図は上記端末処理後の被覆光ファイバＦａ、Ｆｂを
一対の移動台ＩＡ、ＩＢと単一のガイド台２とにわたっ
てセットした状態を示したものである。FIG. 2 shows a state in which the coated optical fibers Fa and Fb after the terminal treatment are set across a pair of movable tables IA and IB and a single guide table 2. As shown in FIG.

すなわち第２図において、被覆光ファイバＦａ、Ｆｂの
被覆端部を保持するための保持溝３ａ、　３ｂと、各光
ファイバ素ＭＡ　ａ　＋〜ａ５、ｂ、−ｂｓを嵌めこむ
べき並列状態の凹溝４ａ、４ａ・・・・、４ｂ、　４ｂ
・・・・とが上面に形成された上記両移動台ＩＡ、　Ｉ
Ｂには、その保持溝３ａ、３ｂ、凹溝４ａ、　４ａ・・
・−１４ｂ、４ｂ−−−−（７）各内部に被覆端部、光
ファイバ素線端部を嵌めこみ、上面両側に切離間隔をお
いて並列状態の素線ガイド川口ｔｉｌ１５　ａ、５ａ・
・・・、　５ｂ、５ｂ・・・・が形成されたガイド台２
には、その素線ガイド用凹溝５ａ、５ａ・・・・、５ｂ
、５ｂ・・・・内に上記光ファイバ素線ａ１〜ａ５、ｂ
１〜ｂ５の先端側を嵌めこみ、しかる後、クランプ手段
たる被覆クランプ６ａ、　８ｂ、素線クランプ７ａ、７
ｂ、ガイドクランプ８ａ、８ｂを介して上記被覆端部、
素線端部が所定の凹溝内へ押しつけられ、該各溝内に保
持される。That is, in FIG. 2, holding grooves 3a and 3b for holding the coated end portions of coated optical fibers Fa and Fb, and parallel recesses into which the respective optical fiber elements MA a + to a5, b, -bs are fitted. Grooves 4a, 4a..., 4b, 4b
Both of the above-mentioned moving tables IA and I are formed on the upper surface.
B has its holding grooves 3a, 3b, grooves 4a, 4a...
・-14b, 4b---(7) The coated end and the optical fiber strand end are fitted inside each, and the strand guide Kawaguchi til 15a, 5a is arranged in parallel with a separation interval on both sides of the upper surface.
..., 5b, 5b... are formed on the guide stand 2
have concave grooves 5a, 5a..., 5b for guiding the strands.
, 5b... The above-mentioned optical fiber strands a1 to a5, b
1 to b5 are fitted, and then covered clamps 6a, 8b and wire clamps 7a, 7, which are clamping means, are fitted.
b, the covered end via guide clamps 8a and 8b;
The ends of the strands are pressed into predetermined grooves and held within the respective grooves.

この際、被覆クランプ６ａ、６ｂは、保持溝３ａ、３ｂ
内において被覆光ファイバＦａ、　Ｆｂの被覆端部がス
リップすることのない安定したクランプ状態を呈するが
、素線クランプ７ａ、７ｂの場合は凹溝４ａ、４ａ・・
・・、４ｂ、　４ｂ・・・・内において光ファイバ素線
ａｌ〜ａ５、ｂ１〜ｂ５がスリップできる程度のクラン
プ状態を呈する。At this time, the covering clamps 6a, 6b are attached to the holding grooves 3a, 3b.
In the case of bare wire clamps 7a, 7b, the coated ends of coated optical fibers Fa, Fb exhibit a stable clamping condition without slipping, but in the case of bare wire clamps 7a, 7b, concave grooves 4a, 4a...
. . , 4b, 4b . . . exhibits a clamping state that allows the optical fibers al to a5, b1 to b5 to slip.

さらにガイドクランプ８ａ、　８ｈの場合も、素線ガイ
ド用凹溝５ａ、５ａ・・・・、５ｂ、５ｂ・・・・内に
おいて光ファイバ素線ａ１〜ａ５．　ｂ１〜ｂ５の先端
側が移動できるよう、これら光ファイバＪ！ｌａ１〜ａ
５、ｂｌ−ｂｓをクランプする。Furthermore, in the case of the guide clamps 8a, 8h, the optical fibers a1 to a5. These optical fibers J! la1~a
5. Clamp bl-bs.

こうして多心被覆光ファイバＦａ、　Ｆｂの各部が移動
台ＩＡ、　ＩＢ、ガイド台２にセットされた後、各光フ
ァイバ素線ａｌ”’ａ５、ｂ＋〜ｂｓは、移動台ＩＡ、
ＩＢを介してこれらの突き合わせ方向へ移動されるが、
この際、ガイド台２の長手方向中央には、該ガイド台２
を貫通せる突出板８が上方へ進出し待機しており、した
がって光ファイバ素ｍａ＋”ａ５．ｂ＋〜ｂ５がこれら
の突き合わせ方向へ移動されたとき、光ファイバ素線ａ
１〜ａ５、ｂｌ−ｂｓの端面が第３図のごとく突当板８
の両面に突き当たる。After each part of the multi-core coated optical fibers Fa and Fb is set on the movable bases IA and IB and the guide base 2, each optical fiber strand al'''a5, b+~bs is transferred to the movable bases IA and IB, and the guide base 2.
It is moved in the direction of these butts via IB,
At this time, in the center of the guide stand 2 in the longitudinal direction, the guide stand 2
A protruding plate 8 that can penetrate the optical fibers ma+"a5.b+~b5 is moved upward and is on standby. Therefore, when the optical fiber elements ma+"a5.b+~b5 are moved in the direction of matching them, the optical fiber elements a
The end faces of 1 to a5, bl-bs are abutment plates 8 as shown in Figure 3.
It hits both sides.

ところで、第１図のごとく多心被覆光ファイバＦａ、　
Ｆｂを端末処理したとき、光ファイバ素線ａｌ〜ａ５、
ｂ１〜ｂ５の先端が不揃い（微小量）となる事態が生じ
た場合、これらの不揃いはつぎのようにして解消される
。By the way, as shown in FIG. 1, the multi-core coated optical fiber Fa,
When Fb is terminal-treated, optical fiber strands al~a5,
If the tips of b1 to b5 become irregular (a minute amount), these irregularities are resolved as follows.

すなわち、光ファイバχ線ａ１〜ａ５、ｂ１〜ｂ５の端
面を突売板３の両面に突き当てるとき、露出長の最も短
い光ファイバ素線ａ３．　ｂｓの端部が突当板９に突き
当たるまで、各光ファイバ素線ａ１〜ａ５、ｂｌ〜ｂ５
を所定方向へ移動させる。That is, when the end faces of the optical fibers a1 to a5 and b1 to b5 are brought into contact with both sides of the sales plate 3, the optical fiber strands a3. Each optical fiber strand a1 to a5, bl to b5 until the end of bs hits the abutting plate 9.
move in a predetermined direction.

かかる突き当てにより、これら光ファイバ素線ａ１〜ａ
５、ｂ１〜ｂ５の端面が突当板８を挟んで一線上に揃い
、対をなす光ファイバ素ｍａｔ　：　ｂ＋〜ａ５　：　
ｂ５の端面間隔が一定となるが、この際、露出長の最も
短い光ファイバ素線ａ３．ｂ５を除き、他の光ファイバ
素線ａ１、ａ２、ａ４、ａ５、ｂｌ、ｂ？、ｂｓ、ｂ４
は第３図のごとく撓む。Due to this abutment, these optical fiber strands a1 to a
5. The end faces of b1 to b5 are aligned on a line across the abutting plate 8, forming a pair of optical fiber elements mat: b+ to a5:
The end face spacing of b5 becomes constant, but at this time, the optical fiber strand a3.b5 with the shortest exposed length. Except for b5, other optical fibers a1, a2, a4, a5, bl, b? , bs, b4
bends as shown in Figure 3.

このとき、素線クランプ７ａ、　７ｂによるクランプ力
を強めて凹溝４ａ、４ａ・・・・、４ｂ、４ｂ・・・・
内における光ファイバ素線ａ１〜ａ５、ｂ１〜ｂ５がス
リップしないように保持し、上記撓みを被覆クランプ６
ａ、６ｂと素線クランプ７ａ、７ｂの間に保持する。At this time, the clamping force by the wire clamps 7a, 7b is strengthened to tighten the concave grooves 4a, 4a..., 4b, 4b...
The optical fibers a1 to a5, b1 to b5 in
a, 6b and the wire clamps 7a, 7b.

かくて光ファイバ素線先端の不揃いが解消されるととも
に光ファイバ素線ｄ１〜ａ５、ｂ１〜ｂ５の端面間隔も
前述した一定状ｙ８を保持するようになる。In this way, the irregularity of the ends of the optical fiber strands is eliminated, and the distance between the end faces of the optical fiber strands d1 to a5 and b1 to b5 also maintains the constant shape y8 described above.

以ドは移動台ＩＡ、ＩＢを介した光ファイバ端面の突き
合わせ移動１図示しない放電電極を介した放電加熱によ
り、光ファイバ素線ａ１〜ａ５．ｂｌ〜ｂ５は所定の対
ごとに融着接続される。Thereafter, the end faces of the optical fibers are brought into contact with each other via the movable tables IA and IB, and the optical fibers a1 to a5. bl to b5 are fusion spliced in predetermined pairs.

ｒ５明の効果１ 以上説明した通り、本発明方法によるときは。r5 light effect 1 As explained above, when using the method of the present invention.

多心被覆光ファイバ相互の融着接続に際し、各光ファイ
バ素線端部の長さにバラツキが生じた場合でも、光ファ
イバγ線の先端側における不揃いを解消してその端面間
隔を正確に設定することができ、したがって、ｆｌ後の
融着接続においてｖｃ続不良を回避することができる。When fusion splicing multi-core coated optical fibers, even if the lengths of the ends of each optical fiber vary, it is possible to eliminate irregularities on the tip side of the gamma rays of the optical fibers and accurately set the spacing between the end faces. Therefore, it is possible to avoid VC connection failure in fusion splicing after fl.

しかも上記不揃いの是正は、簡易なりランプ操作にて行
なえるので、初心者でも充分実施でき。Moreover, since the above-mentioned irregularities can be corrected by simple lamp operation, even beginners can easily correct them.

その不揃いが是正できることにより、多心被覆光ファイ
バ融着接続法における各１程難度を全般的に緩和し得る
。By being able to correct the irregularities, it is possible to generally alleviate the degree of difficulty in the multi-core coated optical fiber fusion splicing method.

【図面の簡単な説明】[Brief explanation of drawings]

図面は本発明方法の一実施例を示したもので、第１図は
端末処理された多心被覆光ファイバの平面図、第２図は
１・、記端末処理後の多心被覆光ファイバ端部を移動台
、ガイド台にセットした状態の断面図、第３図は上記セ
ット後において多心積項光ファイバの端面間隔を設定し
た状態の断面図である。 ＩＡ、ＩＢ・・・移動台 ２　・ｅ・・・ガイド台 ６ａ、８ｂ−−、−被覆クランプ ７ａ、７ｂ・拳・素線クランプ ９・・・・・突当板 Ｆａ、Ｆｂｅ会・多心被覆光ファイバ　　。 帽〜ａ５・・−光ファイバｚ線 す、−ｂ、・・・光ファイバ素線 代理人　弁理士　斉　藤　義　雄 第１Ｉ！！ 第２ｒｌＪ 第３図The drawings show an embodiment of the method of the present invention, in which Fig. 1 is a plan view of a multi-core coated optical fiber that has been terminal-treated, and Fig. 2 is a plan view of the multi-core coated optical fiber after terminal treatment. FIG. 3 is a cross-sectional view of the multi-core product-term optical fiber with end face spacing set after the above-mentioned setting. IA, IB...Movement table 2, e...Guide table 6a, 8b--, -covered clamp 7a, 7b, fist, bare wire clamp 9...Abutting plate Fa, Fbe group, multi-core Coated optical fiber. Hat~a5...-Optical fiber Z line, -b,...Optical fiber agent Patent attorney Yoshio Saito 1st I! ! 2nd rlJ Figure 3

Claims (1)

【特許請求の範囲】[Claims] 対をなす多心被覆光ファイバの端部から露出された各光
ファイバ素線の端面を互いに対向させてこれら光ファイ
バ素線の端面間隔を設定した後、該各光ファイバ素線を
１：１で突き合わせて融着接続する方法において、多心
被覆光ファイバの被覆端部を被覆クランプ手段によりス
リップ不可能にクランプするとともに各光ファイバ素線
端部を素線クランプ手段によりスリップ可能にクランプ
し、つぎに、各光ファイバ素線の端面を突当板に突き当
てて上記端面間隔を設定すると同時に各光ファイバ素線
先端の不揃いを解消し、その不揃いの解消にともなう光
ファイバ素線の撓みを上記被覆クランプ手段と素線クラ
ンプ手段との間で保持し、その後、素線クランプ手段に
より各光ファイバ素線をスリップ不可能にクランプする
ことを特徴とする多心被覆光ファイバ融着接続法におけ
る端面間隔設定方法。After setting the end face spacing of the optical fibers by making the end faces of the optical fibers exposed from the ends of the paired multicore coated optical fibers face each other, the optical fibers are separated at a ratio of 1:1. In the method of butting and fusion splicing, the coated ends of the multi-core coated optical fibers are clamped in a non-slip manner by a coated clamping means, and the ends of each optical fiber are clamped in a slippable manner by a bare wire clamping means, Next, the end face of each optical fiber strand is butted against the abutment plate to set the above-mentioned end face spacing, and at the same time, the unevenness of the tip of each optical fiber strand is eliminated, and the bending of the optical fiber strand due to the elimination of the unevenness is reduced. In a multi-core coated optical fiber fusion splicing method, the optical fibers are held between the coated clamping means and the wire clamping means, and then each optical fiber is clamped in a non-slip manner by the wire clamping means. How to set the end face spacing.
JP24363885A 1985-10-30 1985-10-30 Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method Pending JPS62103606A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24363885A JPS62103606A (en) 1985-10-30 1985-10-30 Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24363885A JPS62103606A (en) 1985-10-30 1985-10-30 Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method

Publications (1)

Publication Number Publication Date
JPS62103606A true JPS62103606A (en) 1987-05-14

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Application Number Title Priority Date Filing Date
JP24363885A Pending JPS62103606A (en) 1985-10-30 1985-10-30 Method for setting gap between end faces in multi-core coated optical fiber fusion-splicing method

Country Status (1)

Country Link
JP (1) JPS62103606A (en)

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