JPS60205505A - Method for reinforcing connected part of optical fiber - Google Patents

Method for reinforcing connected part of optical fiber

Info

Publication number
JPS60205505A
JPS60205505A JP6285384A JP6285384A JPS60205505A JP S60205505 A JPS60205505 A JP S60205505A JP 6285384 A JP6285384 A JP 6285384A JP 6285384 A JP6285384 A JP 6285384A JP S60205505 A JPS60205505 A JP S60205505A
Authority
JP
Japan
Prior art keywords
coating
reinforcing
resin
optical fiber
parts
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.)
Granted
Application number
JP6285384A
Other languages
Japanese (ja)
Other versions
JPH0519681B2 (en
Inventor
Takaaki Iso
磯　孝昭
Shigeru Tategami
舘上　滋
Yuichi Obara
小原　裕一
Akihiro Otake
大竹　明博
Yoshiaki Miyajima
宮島　義昭
Tadashi Haibara
灰原　正
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
Nippon Telegraph and Telephone Corp
Original Assignee
Furukawa Electric Co Ltd
Nippon Telegraph and Telephone Corp
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, Nippon Telegraph and Telephone Corp filed Critical Furukawa Electric Co Ltd
Priority to JP6285384A priority Critical patent/JPS60205505A/en
Publication of JPS60205505A publication Critical patent/JPS60205505A/en
Publication of JPH0519681B2 publication Critical patent/JPH0519681B2/ja
Granted 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
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2558—Reinforcement of splice joint

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To form a reinforcing covering layer having a smooth surface free from burr on connected parts by coating and curing an uncured resin by the relative movement of the parts freed of their coverings and a single dies type coater. CONSTITUTION:Parts 3A, 3B of covered optical fibers are freed of their coverings and connected, and a dies type coater 10 which can be freely moved along the parts 3A, 3B is placed around the fibers. After charging an uncured resin 6 into the coater 10, the parts 3A, 3B freed of their converings and connected and the coater 10 are relatively moved in the axial direction of the parts 3A, 3B to coat the uncured resin 6 on the outsides of the parts 3A, 3B. The uncured resin 6 is cured to form a reinforcing covering layer.

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は融着手段により接続された光フアイバ接続部を
補強する方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for reinforcing optical fiber connections connected by fusion means.

（従来技術） 周知の通り、光ファイバを融着手段により長手方向に接
続するときは、対をなす被覆光フフイバの端部から被覆
層を除去することにより被覆除去部を形成するとともに
これら被覆除去部を適当な長さに切り揃え、その後、各
被覆除去部（裸ファイバ）の先端を放電加熱、レーザ加
熱等により加熱しながら互いに突き合わせて融着接続し
ている。(Prior Art) As is well known, when optical fibers are connected in the longitudinal direction by a fusion means, a coating removal section is formed by removing the coating layer from the end of a pair of coated optical fibers, and the coating is removed. After that, the tips of each coat-removed portion (bare fiber) are heated by discharge heating, laser heating, etc., and are abutted against each other and fused and spliced.

第１図は上記のごとく融着接続された光フアイバ接続部
を示したものであり、同図において１、！ ＩＡ％’１ｉ３は対をなす被覆光ファイバ、２　Ａ　ｓ
２Ｂはこれらの被覆層、３Ａ、３Ｂは被覆除去部である
。FIG. 1 shows the optical fiber connection section fusion-spliced as described above, and in the same figure, 1, ! IA%'1i3 is a pair of coated optical fibers, 2 A s
2B is these coating layers, and 3A and 3B are coating removal parts.

光フアイバ接続部（被覆除去部も含む）は、被覆除去後
の強度を保証するため、被覆手段により補強するのが一
般であり、現状では、第１図のごとく割型式とした成形
型４を被覆層２Ａ。The optical fiber connection part (including the part where the coating is removed) is generally reinforced with a coating means to ensure the strength after the coating is removed. Covering layer 2A.

２Ｂの端部にわたって装着した後、例えばシリンジ６に
よる注入手段を介して熱硬化性の樹脂６を上記成形型４
に注入し、該成形型４を加熱して樹脂６を硬化させてい
る。2B, the thermosetting resin 6 is poured into the mold 4 through injection means such as a syringe 6.
The mold 4 is heated to harden the resin 6.

これにより光フアイバ接続部の外周には第２図のごとく
上記樹脂６製の補強被覆層７が形成されるが、当該補強
被覆層７の外周には成形時の型合わせ部、注入ゲート等
によるバリ８が生じ、このバリ８がつぎのような問題を
惹き起こしている。As a result, a reinforcing coating layer 7 made of the resin 6 is formed on the outer periphery of the optical fiber connection part as shown in FIG. A burr 8 is generated, and this burr 8 causes the following problems.

つまり上記バリ８は接続作業現場においてノ１サミ、カ
ミソリ等を介して除去されるが、当該除去作業を要する
分だけ、手数、時間が多く費やされ、しかも補強被覆層
７の径が小さいこともあって同層７を傷つけたり、充分
にバリ８が除去アきないこともあり、特にバリ８がとり
残されている場合は、事後の心線化、ユニット化に除し
て被覆光ファイバの集合が具合よく行なえず、例えば撚
合用のダイスに引っかかった。す、断線する。In other words, the burr 8 is removed at the connection work site using chisels, razors, etc., but the removal work requires a lot of effort and time, and furthermore, the diameter of the reinforcing coating layer 7 is small. Otherwise, the same layer 7 may be damaged or the burr 8 may not be removed sufficiently.In particular, if the burr 8 is left behind, it is necessary to remove the coated optical fiber from the coated optical fiber during the subsequent coreization and unitization. The pieces could not be assembled properly, and for example, they got caught in the twisting die. The wire is disconnected.

（発明の目的） 本発明は上記の問題点に鑑み、光フアイバ接続部の補強
被覆層がバリなどのない円滑な表面に形成できる方法を
提供しようとするものである。(Object of the Invention) In view of the above-mentioned problems, the present invention seeks to provide a method by which a reinforcing coating layer of an optical fiber connection portion can be formed on a smooth surface free from burrs.

（発明の構成） 本発明は、対をなす被覆光ファイバの端部から被覆層を
除去することにより被覆除去部を形成し、これら被覆除
去部の先端を互いに突き合わせて融着接続した後、当該
接続状態の被覆除去部外周に樹脂製の補強被覆層の形成
する光フアイバ接続部の補強方法において、上記一方の
被覆光ファイバ外周には接続状態の被覆除去部にわたっ
て移動自在なダイス型のコーティング器を１つ備えてお
き、当該コーティング器内に未硬化樹脂を収容した後、
上記接続状態の被覆除去器とコーティング器とを、その
被覆除去部の軸線方向に？Ｑつて相対移動させることに
より、接続状態の被覆除去部外周に未硬化樹脂を塗布す
るとともに該未硬化樹脂を硬化させて補強被覆層を形成
することを特徴としている。(Structure of the Invention) The present invention forms coat-removed portions by removing the coating layers from the ends of a pair of coated optical fibers, and after abutting the ends of these coat-removed portions and fusion splicing, the In a method for reinforcing an optical fiber connection part in which a reinforcing coating layer made of resin is formed on the outer periphery of the coated removed part in the connected state, a die-shaped coating device that is movable over the coated removed part in the connected state is attached to the outer periphery of one of the coated optical fibers. After storing the uncured resin in the coating machine,
Is the coating remover and coating device in the above connected state aligned in the axial direction of the coating removal section? By relatively moving the Q, an uncured resin is applied to the outer periphery of the uncoated portion in the connected state, and the uncured resin is cured to form a reinforcing coating layer.

（実施例） つぎに本発明の実施例を第３図〜第５図により説明する
。(Example) Next, an example of the present invention will be described with reference to FIGS. 3 to 5.

であり、これら被覆除去部３Ａ、３Ｂの先端は第１図の
場合と同じく、公知の手段を介して融着接続されている
。As in the case of FIG. 1, the tips of these coat removal parts 3A and 3B are fusion-spliced via known means.

本発明では上記光フアイバ接続部を補強するとき、はじ
め、被覆光ファイバＩＡ、ＩＢの被覆層２Ａ、２Ｂを１
対のクランプ９Ａ、９Ｂにより保持するとともに当該ク
ランプ状態において被覆除去部３Ａ、３Ｂを弛みのない
緊張状態つぎに、上記一方の被覆光ファイバ１Ｂの外周
にダイス型としたコーティング器１ｏを備える。In the present invention, when reinforcing the optical fiber connection portion, first, the coating layers 2A and 2B of the coated optical fibers IA and IB are
A die-shaped coater 1o is provided around the outer periphery of one of the coated optical fibers 1B, which is held by a pair of clamps 9A and 9B, and in which the coated optical fibers 3A and 3B are held in a tensioned state with no slack.

このコーティング器１ｏはダイス部１１と樹脂収容部１
２とを有し、その割型構造において２つ以上に分解でき
る構成となっている。This coating machine 1o has a die part 11 and a resin storage part 1.
2, and its split structure allows it to be disassembled into two or more pieces.

したがって上記のごとく被覆光ファイバ１Ｂの外周に装
着されるとき、コーティング器１０は分解状態でその被
覆光ファイバ１Ｂの外周に当てがわれ、これらの割型部
分が互いに結合される。Therefore, when the coater 10 is attached to the outer periphery of the coated optical fiber 1B as described above, the coater 10 is applied to the outer periphery of the coated optical fiber 1B in a disassembled state, and these split mold parts are joined together.

調整可能なるよう、調整台（ステージ）１３により支持
されており、既述のごとく被覆光ファイバ１Ｂの外周に
セットされた当該コーティング器１ｏはそのダイス部１
１の中心と被覆除去部３Ａ、３Ｂの軸心とが相互に一致
するよう、調整台１３を介してセンタリングされる。The coating device 1o is supported by an adjustment table (stage) 13 so as to be adjustable, and the coating device 1o is set around the outer periphery of the coated optical fiber 1B as described above.
1 and the axes of the coating removal parts 3A and 3B are centered via the adjustment table 13 so that they coincide with each other.

Ｊ、　１　（−、−ｘ、　７　ソｔｆ　興１１””＋　
ヲ古１ｔｌ＋−でしする幽整合１３は、被覆除去部３Ａ
、３Ｂと平行するガイド１４、コーティング器１ｏに緊
着されたワイヤ１６、そのワイヤ１６を巻きとり、巻き
もどすためのドラム１６Ａとシープ１６Ｂ１　ドラム１
６Ａに設けられたハンドル１７などを介して被覆除去部
３Ａ、３Ｂの軸線方向へ移動するようになっている。J, 1 (-, -x, 7 sotf ko11""+
The old alignment 13 is the coating removal part 3A.
, 3B, a wire 16 tightly attached to the coater 1o, a drum 16A and a sheep 16B1 for winding and unwinding the wire 16. Drum 1
It is configured to move in the axial direction of the coating removal parts 3A and 3B via a handle 17 provided on the cover 6A.

かかる状態においてコーティング器１ｏの樹脂収容部１
２内には未硬化（液状）の樹脂６が収容され、その後、
ハンドル１７の操作によりコーティング器１０は被覆光
ファイバ１Ｂ側から被覆光ファイバ１Ａ側へと移動し、
かつ、当該移動時においてコーティング器１０はｔｌ化
樹脂６を被覆除去部３Ａ、３Ｂの外周に塗イ１】する。In such a state, the resin storage section 1 of the coating machine 1o
2 contains uncured (liquid) resin 6, and then
By operating the handle 17, the coater 10 moves from the coated optical fiber 1B side to the coated optical fiber 1A side,
Further, during the movement, the coater 10 coats the tl resin 6 on the outer periphery of the coating removal parts 3A and 3B.

すなわち第４図において硬化処理を受ける未硬化の補強
被覆層７を形成する。That is, in FIG. 4, an uncured reinforcing coating layer 7 is formed which undergoes a curing treatment.

この補強被覆層７を形成している樹脂６は、シリコーン
樹脂（シリコーンゴムｌ＆ｔｒ）％エポキシ樹脂　ウレ
タン樹脂、−不飽和ポリエステル樹脂などの熱硬化性樹
脂、エポキシアクリレート、ウレタンアクリレートなど
の光（紫外線）硬化性樹脂から適宜のものが採用されて
いる。The resin 6 forming this reinforcing coating layer 7 is made of silicone resin (silicone rubber l&tr), thermosetting resin such as epoxy resin, urethane resin, -unsaturated polyester resin, epoxy acrylate, urethane acrylate, etc. Appropriate curable resins are used.

上記のようにして形成された未硬化補強被覆層７は第４
図の硬化手段により直ちに硬化される。The uncured reinforcing coating layer 7 formed as described above is the fourth
It is immediately cured by the curing means shown in the figure.

＄４図において、前述した樹脂６が光硬化性であるとす
ると、これの硬化手段１８として紫外線ランプ１９Ａと
反射板１９Ｂとが未硬化補強被覆層７０両側に備えられ
、当該硬化手段１８による硬化、：ｘ−不ルギを受けて
補強被覆層７は硬化される。In Figure 4, assuming that the resin 6 described above is photocurable, an ultraviolet lamp 19A and a reflector plate 19B are provided on both sides of the uncured reinforcing coating layer 70 as a curing means 18, and the curing by the curing means 18 is performed. , : x - The reinforcing coating layer 7 is hardened by the hardening.

一方、樹脂６が熱硬化性であるとき、上記硬化手段１８
として電気ヒータなどによる加熱器が未硬化補強被覆層
７の周囲に（１ｍえられ、これにより同層７が硬化され
る。On the other hand, when the resin 6 is thermosetting, the curing means 18
A heater such as an electric heater is placed around the uncured reinforcing coating layer 7 (1 m), thereby curing the layer 7.

なお、上記のようにして形成された補強被覆層７の外径
がダイス部１１の内径よりもやや小さく仕上がるような
場合、既述の諸工程を２回以上繰り返せばよく、これに
より補強被覆層７の外径は被覆層２Ａ、２Ｂの外径とほ
ぼ同一になる。In addition, if the outer diameter of the reinforcing coating layer 7 formed as described above is finished to be slightly smaller than the inner diameter of the die part 11, the above-mentioned steps may be repeated two or more times. The outer diameter of 7 is almost the same as the outer diameter of the covering layers 2A and 2B.

また、前述の実施例では被校除去部３Ａ、３Ｂを静止状
態とし、コーティング器１０を移動させたが、これとは
逆にコーティング器１０を静止状態とし、被覆除去部３
Ａ、３Ｂをこれらの軸線方向へ移動させても先と同様の
樹脂塗布が行なえる。Further, in the above-described embodiment, the coater 10 was moved with the coating removal parts 3A and 3B in a stationary state, but conversely, the coater 10 was kept in a stationary state and the coating removal part 3
Even if A and 3B are moved in the axial direction, resin coating can be performed in the same manner as before.

標準的な外径をもつ被覆光ファイバ１Ａ、１Ｂの接続部
外周に上記補強被覆層７を形成するとき、コーティング
器１ｏの樹脂収容部１２内には約０．２ｍｔ（１回分）
の未硬化樹脂６を収容すればよい。When forming the reinforcing coating layer 7 on the outer periphery of the connecting portion of the coated optical fibers 1A and 1B having standard outer diameters, approximately 0.2 mt (for one application) is stored in the resin storage section 12 of the coater 1o.
The uncured resin 6 may be accommodated.

第５図に上記のようにして形成された補強被覆層７を示
す。FIG. 5 shows the reinforcing coating layer 7 formed as described above.

この補強被覆層了は表面が円滑であって従来法のごとき
パリの発生がなく、シたがってパリに起因した種４の問
題がない。The surface of this reinforcing coating layer is smooth and does not cause the occurrence of spalls as in the conventional method, so there is no type 4 problem caused by spalls.

（発明の効果） 接続状態の被覆除去部とダイス型コーティング器との相
対移動によりその被覆除去部の外周に未硬化樹脂を塗布
し、これを硬化させ補強被覆層を形成するから、単に光
フアイバ接続部が補強できるだけでなく、その補強被覆
層をパリのない円滑な表面に、しかも外径精度高く仕上
げることができ、したがってパリ除去作業がなくなり、
ユニット化などに際しての取り扱いも良。(Effects of the Invention) An uncured resin is applied to the outer periphery of the coated removed part by the relative movement of the connected coated removed part and the die-type coater, and this is cured to form a reinforcing coating layer. Not only can the connection parts be reinforced, but the reinforcing coating layer can be finished to have a smooth surface with no burrs, and with high accuracy in outer diameter, eliminating the need for burr removal work.
Easy to handle when unitizing etc.

好となる光フアイバ接続部の補強が実現できる。It is possible to achieve better reinforcement of the optical fiber connection portion.

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

第１図は従来法の説明図、第２図は同上の方法により補
強された光フアイバ接続部の断面図、第３図、第４図は
本発明方法の１実施例を略示した説明図、第５図は同上
の方法により補強された光フアイバ接続部の断面図であ
る。 ｌＡ１１Ｂ・・・・・被覆光ファイバ ２Ａ、２Ｂ・・・・・被覆層 ３Ａ、３Ｂ・・・・・被覆除去部 ６・・・・・樹　脂 フ　自・−・ｅ　急＠強油栗隔Fig. 1 is an explanatory diagram of the conventional method, Fig. 2 is a cross-sectional view of an optical fiber connection reinforced by the same method as above, and Figs. 3 and 4 are explanatory diagrams schematically showing one embodiment of the method of the present invention. , FIG. 5 is a cross-sectional view of an optical fiber connection reinforced by the above method. lA11B...Coated optical fibers 2A, 2B...Coating layers 3A, 3B...Coating removal section 6...Resin cover Self--e Rapid @ strong oil separation

Claims (2)

【特許請求の範囲】[Claims] （１）対をなす被覆光ファイバの端部から被覆層を除去
することにより被覆除去部を形成し、これら被覆除去部
の先端を互いに突き合わせて融着接続した後、当該接続
状態の被覆除去部外周に樹脂製の補強被覆層を形成する
光フアイバ接続部の補強方法において、上記一方の被覆
光ファイバ外周には接続状態の被覆除去部にわたって移
動自在なダイス型のコーティング器を１つ備えておき、
当該コーティング器内に未硬化樹脂を収容した後、上記
接続状態の被覆除去器とコーティング器とを、その被覆
除去部の軸線方向に沿って相対移動させることにより、
接続状態の被覆除去部外周に未硬化樹脂を塗布するとと
もに該未硬化樹脂を硬化させて補強被覆層を形成する光
フアイバ接続部の補強方法。(1) After removing the coating layer from the ends of a pair of coated optical fibers to form a coating removal section, and after abutting the tips of these coating removal sections against each other and fusion splicing, the coating removal section in the connected state is formed. In a method for reinforcing an optical fiber connection part in which a reinforcing coating layer made of resin is formed on the outer periphery, one die-shaped coater is provided on the outer periphery of one of the coated optical fibers and is movable over the coating removal part in the connected state. ,
After storing the uncured resin in the coating device, by relatively moving the connected coating remover and coating device along the axial direction of the coating removing part,
A method for reinforcing an optical fiber connection part, which comprises applying an uncured resin to the outer periphery of the uncoated part in a connected state and curing the uncured resin to form a reinforcing coating layer. （２）　補強被覆層を光硬化性樹脂、熱硬化性樹脂のい
ずれかで形成する特許請求の範囲第１項記載の光フアイ
バ接続部の補強方法。(2) The method for reinforcing an optical fiber connection portion according to claim 1, wherein the reinforcing coating layer is formed of either a photocurable resin or a thermosetting resin.
JP6285384A 1984-03-30 1984-03-30 Method for reinforcing connected part of optical fiber Granted JPS60205505A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6285384A JPS60205505A (en) 1984-03-30 1984-03-30 Method for reinforcing connected part of optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6285384A JPS60205505A (en) 1984-03-30 1984-03-30 Method for reinforcing connected part of optical fiber

Publications (2)

Publication Number Publication Date
JPS60205505A true JPS60205505A (en) 1985-10-17
JPH0519681B2 JPH0519681B2 (en) 1993-03-17

Family

ID=13212277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6285384A Granted JPS60205505A (en) 1984-03-30 1984-03-30 Method for reinforcing connected part of optical fiber

Country Status (1)

Country Link
JP (1) JPS60205505A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003002695A (en) * 2001-06-13 2003-01-08 Furukawa Electric Co Ltd:The Method for coating optical fiber

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717449A (en) * 1980-06-30 1982-01-29 Fujitsu Ltd Coating apparatus for optical fiber with resin
JPS5735817A (en) * 1980-08-06 1982-02-26 Nippon Telegr & Teleph Corp <Ntt> Reinforcing method for optical fiber connection part
JPS57158825A (en) * 1981-03-27 1982-09-30 Fujitsu Ltd Method for connection of optical fiber
JPS5827114A (en) * 1981-07-31 1983-02-17 ウエスタ−ン・エレクトリツク・カムパニ−・インコ−ポレ−テツド Covering for uncoated part of optical fiber
JPS5838911A (en) * 1981-09-01 1983-03-07 Kokusai Denshin Denwa Co Ltd <Kdd> Connecting method for optical fiber
JPS58211707A (en) * 1982-06-04 1983-12-09 Nippon Telegr & Teleph Corp <Ntt> Coated optical fiber

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5717449A (en) * 1980-06-30 1982-01-29 Fujitsu Ltd Coating apparatus for optical fiber with resin
JPS5735817A (en) * 1980-08-06 1982-02-26 Nippon Telegr & Teleph Corp <Ntt> Reinforcing method for optical fiber connection part
JPS57158825A (en) * 1981-03-27 1982-09-30 Fujitsu Ltd Method for connection of optical fiber
JPS5827114A (en) * 1981-07-31 1983-02-17 ウエスタ−ン・エレクトリツク・カムパニ−・インコ−ポレ−テツド Covering for uncoated part of optical fiber
JPS5838911A (en) * 1981-09-01 1983-03-07 Kokusai Denshin Denwa Co Ltd <Kdd> Connecting method for optical fiber
JPS58211707A (en) * 1982-06-04 1983-12-09 Nippon Telegr & Teleph Corp <Ntt> Coated optical fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003002695A (en) * 2001-06-13 2003-01-08 Furukawa Electric Co Ltd:The Method for coating optical fiber
JP4532023B2 (en) * 2001-06-13 2010-08-25 古河電気工業株式会社 Optical fiber coating method

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