JPH02226105A - Method for removing coating of coated optical fiber - Google Patents
Method for removing coating of coated optical fiberInfo
- Publication number
- JPH02226105A JPH02226105A JP1045118A JP4511889A JPH02226105A JP H02226105 A JPH02226105 A JP H02226105A JP 1045118 A JP1045118 A JP 1045118A JP 4511889 A JP4511889 A JP 4511889A JP H02226105 A JPH02226105 A JP H02226105A
- Authority
- JP
- Japan
- Prior art keywords
- coating
- optical fiber
- fiber
- flaw
- 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
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 59
- 239000011248 coating agent Substances 0.000 title claims abstract description 58
- 239000013307 optical fiber Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims description 11
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 230000008961 swelling Effects 0.000 claims abstract description 8
- UOCLXMDMGBRAIB-UHFFFAOYSA-N 1,1,1-trichloroethane Chemical compound CC(Cl)(Cl)Cl UOCLXMDMGBRAIB-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 5
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004576 sand Substances 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
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/56—Processes for repairing optical cables
- G02B6/566—Devices for opening or removing the mantle
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、光ファイバを高強度に接続する際に有用な被
覆除去方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a coating removal method useful for connecting optical fibers with high strength.
［従来の技術］
今日では光ファイバを使った通信網の構築が各所で行わ
れている。これらに用いられている光ケーブル長は最大
２ｂ程度である。しかしながら、海底ケーブル（例えば
海峡横断）では、１条５０〜１００ｈに及ぶことがある
。[Prior Art] Today, communication networks using optical fibers are being constructed in various places. The maximum length of the optical cable used for these is about 2b. However, in submarine cables (for example, across straits), the length of a single thread can range from 50 to 100 h.
このような長尺ケーブルの製造では、光ファイバを高強
度かつ同径に接続しながらケーブル化する必要がある。In manufacturing such long cables, it is necessary to connect optical fibers with high strength and the same diameter while forming the cable.
特に、光ファイバ接続部の強度に関しては、通常接続（
平均０．７ｋｇｆ）の倍数（平均的３ｋｇｆ）必要とさ
れる。In particular, regarding the strength of optical fiber connections, normal connections (
(average 0.7kgf) is required (average 3kgf).
光ファイバを高強度に接続するには、ファイバ（ガラス
）に接続工具など、−切触れないように末端処理するこ
とがポイントである。In order to connect optical fibers with high strength, it is important to treat the ends of the fibers (glass) so that they do not come into contact with a connecting tool or the like.
第５図は、現在−収約に用いられている光ファイバ心線
の断面構造を示す、光ファイバ心線３０は、ファイバ１
にプライマリ被覆２．セカンダリ被覆３の２層のプラス
チック（ウレタンアクソレート）被覆を施しである。プ
ライマリ被覆２は、ヤング率０．１〜０．３ ｋｇｆ
／ ｒｍ２と小さいクツション効果のある材料を用い、
伝送特性の向上を図っている。セカンダリ被覆３は、ヤ
ング率５０〜７０ｋＪｒｆ／ｆｆ１Ｉ＋２と高く外傷等
に強い材料を用いている。FIG. 5 shows the cross-sectional structure of a coated optical fiber currently used for fiber optic fibers.
Primary coating 2. The secondary coating 3 is a two-layer plastic (urethane axolate) coating. Primary coating 2 has a Young's modulus of 0.1 to 0.3 kgf
/rm2, using a material with a small cushioning effect,
Efforts are being made to improve transmission characteristics. The secondary coating 3 is made of a material that has a high Young's modulus of 50 to 70 kJrf/ff1I+2 and is resistant to external damage.
通常用いている光ファイバ心線３０の液種外径は、２５
０μｍ及び４００μｍである。The liquid type outer diameter of the optical fiber core 30 that is usually used is 25
They are 0 μm and 400 μm.
第６図において従来の被覆除去方法を説明する。A conventional coating removal method will be explained with reference to FIG.
前述したように、高強度接続を行うためには、ガラスに
触れないようにすることが重要であり、被覆除去も同様
である。As mentioned above, avoiding contact with the glass is important in order to make high-strength connections, and the same goes for coating removal.
先ず、光ファイバ心［３０に被覆除去長さを決め、所定
の位置にリング状のノツチ４を入れる。First, the length to remove the coating from the optical fiber core [30 is determined, and a ring-shaped notch 4 is inserted at a predetermined position.
次に、その部分をトリクロロエタン、塩化メチレン等の
膨潤溶液中に５分程度漬浸すると、プライマリ被覆２と
セカンダリ被覆３が膨潤し、ファイバ１端面より第６図
矢示の方向に突出してくる。Next, when that part is immersed in a swelling solution such as trichloroethane or methylene chloride for about 5 minutes, the primary coating 2 and the secondary coating 3 swell and protrude from the end face of the fiber 1 in the direction of the arrow in FIG. 6.
この部分をビンセット等で矢印の方向に引張ることによ
り、ノツチ４部から被覆を除去できる。The coating can be removed from the notch 4 by pulling this part in the direction of the arrow with a bottle set or the like.
［発明が解決しようとする課１［ｉｌ
しかし、上記のような被覆除去方法では、次のような問
題点がある。Problem 1 to be Solved by the Invention However, the above coating removal method has the following problems.
（１）膨潤した被覆を引張った際、ファイバ１とプライ
マリ被覆２間に若干の摩擦力が働き、ファイバ１の表面
に傷が付く。(1) When the swollen coating is pulled, a slight frictional force acts between the fiber 1 and the primary coating 2, causing scratches on the surface of the fiber 1.
（２）被覆部が除去可能になるまで約５分と長時間を要
し、作業効率が悪い、又、被覆除去部以外までも膨潤さ
せられてしまい、接続後の信頼性に影響を及ぼす。(2) It takes a long time, about 5 minutes, until the covering part can be removed, resulting in poor work efficiency, and even parts other than the part from which the covering is removed are swollen, which affects the reliability after connection.
（３）膨潤させた被覆部を引張った際、必ずしもノツチ
４部から切れず、しばしば途中から切れてしまうことが
あり、この場合には再度始めから行わなければならない
。(3) When the swollen coating is pulled, it may not necessarily be cut from the 4th notch, but often from the middle, and in this case, the process must be repeated from the beginning.
本発明の目的は、従来技術の欠点を解消し、ファイバ表
面に傷を生じないよう且つ確立よく被覆を除去すること
ができる方法を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a method that eliminates the drawbacks of the prior art and allows the coating to be removed without causing damage to the fiber surface and with high reliability.
［課題を解決するための手段］
本発明の光ファイバ心線の被覆除去方法は、光ファイバ
心線の所定の位置にリング状のノツチを入れ、除去すべ
き被覆表面の長手方向に傷を入れた後、膨潤溶液中に浸
して周方向に任意に分割後、分割被覆を除去するもので
ある。[Means for Solving the Problems] The method for removing the coating from an optical fiber coated wire of the present invention involves inserting a ring-shaped notch in a predetermined position of the coated optical fiber and making a scratch in the longitudinal direction of the coated surface to be removed. After that, it is immersed in a swelling solution and divided arbitrarily in the circumferential direction, and then the divided coating is removed.
［作用］
リング状のノツチを境として存在する除去すべき被覆表
面の長手方向に傷を入れると、被覆表面積が大きくなっ
て膨潤し易くなり、比較的短時間で複数に分割され、フ
ァイバに傷を付けずに且つ途中から切れることなく除去
できる。[Function] When scratches are made in the longitudinal direction of the coating surface to be removed, which exists with the ring-shaped notch as a boundary, the coating surface area becomes large and easily swells, and is divided into multiple pieces in a relatively short period of time, causing scratches on the fiber. It can be removed without adding any marks or cutting from the middle.
プライマリ被覆とセカンダリ被覆を持つ光ファイバの場
合には、両者の層における膨潤の速度が異なり、プライ
マリ被覆の方がより早く膨潤され、バイメタル効果によ
り外側に反るため、被覆除去作業に好都合となる。In the case of optical fibers with primary and secondary coatings, the rates of swelling in the two layers are different, and the primary coating swells faster and bows outward due to the bimetallic effect, making it easier to remove the coating. .
［実施例］
第１図〜第３図により、本発明による光ファイバ心線の
被覆除去方法の実施例を説明する。[Example] An example of a method for removing coating from an optical fiber according to the present invention will be described with reference to FIGS. 1 to 3.
第１図において、従来と同様に専用工具により、光ファ
イバ心線３０の所定の位置にリング状のノツチ４を付け
る。その後、除去すべき被覆部分３１に、サウンドペー
パ＃５により、長手方向に傷５を付ける。このようにし
た被覆部分３１の表面は、第２図に示したようにランダ
ムに荒らされる。このままトリクロロエタン溶液に浸す
ことにより、第３図に示すよう、約１分で短冊状に分割
され、且つ被覆部分３１の分割被覆３２は外側に反る。In FIG. 1, a ring-shaped notch 4 is attached to a predetermined position of an optical fiber core 30 using a special tool as in the conventional method. Thereafter, scratches 5 are made in the longitudinal direction on the covering portion 31 to be removed using sound paper #5. The surface of the coated portion 31 thus formed is randomly roughened as shown in FIG. By immersing it in the trichloroethane solution as it is, it is divided into strips in about 1 minute, as shown in FIG. 3, and the divided coating 32 of the covered portion 31 is warped outward.
この状態で被覆をファイバ１に触れないようビンセット
で取ると、被覆除去は完了する。In this state, the coating is removed with a bin set so as not to touch the fiber 1, and the coating removal is completed.
除去すべき被覆部分３１の表面をサンドベーパで１５を
入れることにより、トリクロロエタン溶液に浸される被
覆表面積が大きくなり、膨潤し易くなる。又、セカンダ
リ被覆３の厚さは２０〜３０μｍ（被覆外径２５０μｍ
の場合）であるため、傷５の深さはプライマリ被覆２ま
で達するものであり、比較的深い傷のある部分から任意
に分割されるものである。By applying 15 to the surface of the coated portion 31 to be removed using a sand vapor, the coated surface area immersed in the trichloroethane solution increases, making it easier to swell. In addition, the thickness of the secondary coating 3 is 20 to 30 μm (coating outer diameter 250 μm
), the depth of the scratch 5 reaches the primary coating 2, and it is arbitrarily divided from the relatively deep scratch portion.
又、プライマリ被覆２とセカンダリ被覆３は膨潤の速度
が異なり、プライマリ被覆２の方がより早く膨潤され、
バイメタル効果により外側に反るものである。これは、
被覆除去の際好都合なことである。In addition, the primary coating 2 and the secondary coating 3 have different swelling speeds, with the primary coating 2 swelling faster,
It warps outward due to the bimetallic effect. this is,
This is advantageous when removing the coating.
第４図は、被覆上に螺旋状のｔｓ６を入れた例である。FIG. 4 is an example in which a spiral ts6 is placed on the coating.
除去すべき被覆部分３１上に所定の傷を入れる方法とし
て、刃物を用いても良い。ファイバをガイドする溝の上
下に互いに交叉する位置に刃物を置き、ファイバ心線を
回転させながら軸方向に動かすことにより、容易に加傷
できる。A knife may be used to make a predetermined scratch on the covering portion 31 to be removed. Damage can be easily caused by placing a knife at a position above and below the groove that guides the fiber so that they intersect with each other, and moving the fiber core in the axial direction while rotating it.
［発明の効果］
以上のように、本発明によれば次のような優れた効果を
有する。[Effects of the Invention] As described above, the present invention has the following excellent effects.
（１）ファイバに一切触れず且つ被覆との摩擦による傷
をも生ずることなく、被覆を除去することができ、ひい
ては、より高強度の接続部が得られる。(1) The coating can be removed without touching the fiber at all and without causing any damage due to friction with the coating, resulting in a connection with higher strength.
（２）膨潤時間が短くて済み、被覆除去部以外の部分に
悪影響を与えない。(2) Swelling time is short, and parts other than the part from which the coating is removed are not adversely affected.
（３）被覆除去の作業時間が短くて済むことから、光ケ
ーブルの接続作業時間をも大幅に短縮できる。(3) Since the work time required to remove the coating is short, the work time required to connect the optical cable can also be significantly reduced.
第１図は本発明の一実施例の被覆除去方法に従い被覆表
面が加傷された光ファイバ心線の端部の側面図、第２図
はその被覆表面加傷後の光ファイバ心線の横断面図、第
３図はその被覆の膨潤状態を示す斜視図、第４図は本発
明の他の実施例の説明図、第５図は光ファイバ心線の横
断面図、第６図は従来の被覆除去力を説明する縦断面図
である。
図中、１はファイバ、２はプライマリ被覆、３はセカン
ダリ被覆、４はノツチ、５は傷、６は螺旋状傷、３０は
光ファイバ心線、３１は除去すべき被覆部分、３２はそ
の分割被覆を示す。FIG. 1 is a side view of the end of an optical fiber whose coating surface has been damaged according to the coating removal method of an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the optical fiber after the coating surface has been damaged. 3 is a perspective view showing the swollen state of the coating, FIG. 4 is an explanatory diagram of another embodiment of the present invention, FIG. 5 is a cross-sectional view of the optical fiber core, and FIG. 6 is a conventional one. FIG. In the figure, 1 is a fiber, 2 is a primary coating, 3 is a secondary coating, 4 is a notch, 5 is a scratch, 6 is a spiral scratch, 30 is an optical fiber core, 31 is a coating portion to be removed, and 32 is its division. Shows coating.
Claims (1)
入れ、除去すべき被覆表面の長手方向に傷を入れた後、
膨潤溶液中に浸して周方向に任意に分割後、分割被覆を
除去することを特徴とする光ファイバ心線の被覆除去方
法。1. After making a ring-shaped notch in a predetermined position of the optical fiber and making a scratch in the longitudinal direction of the coating surface to be removed,
A method for removing a coating from an optical fiber, the method comprising: immersing it in a swelling solution, dividing the coated fiber arbitrarily in the circumferential direction, and then removing the divided coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1045118A JPH02226105A (en) | 1989-02-28 | 1989-02-28 | Method for removing coating of coated optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1045118A JPH02226105A (en) | 1989-02-28 | 1989-02-28 | Method for removing coating of coated optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02226105A true JPH02226105A (en) | 1990-09-07 |
Family
ID=12710356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1045118A Pending JPH02226105A (en) | 1989-02-28 | 1989-02-28 | Method for removing coating of coated optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02226105A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002084352A1 (en) * | 2001-04-11 | 2002-10-24 | Schleuniger Holding Ag | Glass fibre stripping device |
| JP2017009976A (en) * | 2015-06-26 | 2017-01-12 | 株式会社フジクラ | Method of peeling ribbon forming material and member kit for peeling ribbon forming material |
-
1989
- 1989-02-28 JP JP1045118A patent/JPH02226105A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002084352A1 (en) * | 2001-04-11 | 2002-10-24 | Schleuniger Holding Ag | Glass fibre stripping device |
| JP2017009976A (en) * | 2015-06-26 | 2017-01-12 | 株式会社フジクラ | Method of peeling ribbon forming material and member kit for peeling ribbon forming material |
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