JPS5828703A - Removing method for silicon coat of optical fiber - Google Patents
Removing method for silicon coat of optical fiberInfo
- Publication number
- JPS5828703A JPS5828703A JP56127502A JP12750281A JPS5828703A JP S5828703 A JPS5828703 A JP S5828703A JP 56127502 A JP56127502 A JP 56127502A JP 12750281 A JP12750281 A JP 12750281A JP S5828703 A JPS5828703 A JP S5828703A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- coating
- coat
- silicon
- solvent
- 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
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
- G02B6/245—Removing protective coverings of light guides before coupling
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】
本発明は光ファイバをシリコン被覆から引き抜くことに
よって除去する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing optical fiber by pulling it from a silicon coating.
光ファイバは極めて細く、著しく破断し易いので、その
取扱いを容易にするために、この光ファイバの外周には
、変性シリコンなどの１次被覆、シリコンゴム々どの緩
衝層となるシリコン被覆、及びナイロンやポリ塩化ビニ
ルなどの２次被覆が施されている。これらの被覆を施し
たものは光フアイバ心線と呼ばれる。この光フアイバ心
線どうしを接続する際には接続部の損失をできるだけ小
さくする必要があるので、光ファイバを露出させ光ファ
イバを互いに精密に軸合わせをしなければならない。こ
の場合、光ファイバを露出させるために、被覆を除去す
るのであるが、従来は、２次被覆をワイヤストリッパで
除去した後、アセトンやエチルアルコール等の溶剤を浸
した紙、布またはスポンジの間に光ファイバを挾み込ん
でしごくことＫよシ１次被覆および緩衝層のシリコン被
覆を除去していた。Optical fibers are extremely thin and break easily, so in order to make them easier to handle, the outer periphery of this optical fiber is coated with a primary coating such as modified silicone, a silicone coating such as silicone rubber that acts as a buffer layer, and a nylon coating. A secondary coating such as polyvinyl chloride or polyvinyl chloride is applied. Those coated with these coatings are called coated optical fibers. When connecting these optical fiber core wires, it is necessary to minimize the loss at the connecting portion, so the optical fibers must be exposed and the optical fibers must be precisely aligned with each other. In this case, the coating is removed to expose the optical fiber. Conventionally, the secondary coating is removed with a wire stripper, and then a strip of paper, cloth, or sponge soaked in a solvent such as acetone or ethyl alcohol is used. The primary coating and buffer layer silicon coating were removed by inserting and squeezing the optical fiber.
しかし１次被覆および緩衝層のシリコン被覆材料は、ア
セトンやエチルアルコール等の溶剤に対し難溶性である
ので、これらの溶剤を浸み込ませた紙等でしごいても完
全に除去することができず、光フアイバ心線接続の作業
性を著しく悪くしていた。さらに、１次被覆および緩衝
層のシリコン被覆が除去されても、外部に露出した光フ
ァイバの側面および端面が指の汚れなどで汚染される危
険があり、また指で光ファイバを押えるので、その押え
方に作業者の個人差が大きく影響し、作業性が悪い欠点
があった。However, the silicone coating materials for the primary coating and buffer layer are poorly soluble in solvents such as acetone and ethyl alcohol, so they cannot be completely removed even by squeezing them with paper impregnated with these solvents. This made it extremely difficult to connect optical fibers. Furthermore, even if the primary coating and the silicon coating of the buffer layer are removed, there is a risk that the side surfaces and end surfaces of the optical fiber exposed to the outside will be contaminated with dirt from fingers, and the optical fiber may be pressed by fingers. The method of pressing had a large influence on individual differences between workers, which had the disadvantage of poor workability.
加えて、光フアイバ表面の傷は強度劣化の重要な原因と
なるが従来のように紙等で光ファイバを挾み込んでしご
くと、光フアイバ表面に多数の傷を生じるという極めて
重大な問題をも有している。本発明はシリコン被覆を溶
剤で拭くという従来方法に代えて、予めシリコン被覆自
体の膨潤を利用するものであシ、その構成は、光フアイ
バ外周に設けたシリコン被覆の露出部分を脂肪族あるい
は芳香族系炭化水素の溶剤中に浸して前記シリコン被覆
を膨潤させ、光フアイバ界面から剥離させた後、前記シ
リコン被覆を光フアイバ軸方向に引き抜くことによシ除
去することを特徴とする。In addition, scratches on the surface of an optical fiber are an important cause of strength deterioration, but when the optical fiber is squeezed between paper or the like as in the past, it causes many scratches on the surface of the optical fiber, which is an extremely serious problem. It also has The present invention utilizes the swelling of the silicone coating itself in place of the conventional method of wiping the silicone coating with a solvent. The method is characterized in that the silicon coating is swollen by dipping in a group hydrocarbon solvent and peeled off from the optical fiber interface, and then removed by pulling out the silicon coating in the axial direction of the optical fiber.
以下に本発明を図面に基づいて詳細に説明する。The present invention will be explained in detail below based on the drawings.
通常、光ファイバ１の外周には変性シリコンなどの１次
被覆および緩衝層などのシリコン被覆２が設けられてお
シ、このシリコン被覆２の外周に２法被種３が設けられ
ている。ここでまず上記光フアイバ心線から２次被覆３
を除去する（第１図（ａ））。次に該光フアイバ心線の
シリコン被覆２が露出した部分を、脂肪族あるいは芳香
族系炭化水素の溶剤４を入れた容器５に浸すと、前記溶
剤４がシリコン被覆２に浸み込み、このため容器５に浸
したシリコン被覆２は膨潤し体積を膨張させ、第１図（
ｂ）に示すように変形する。膨潤後練光ファイバ心線を
前記溶剤４から引き上げ、膨潤したシリコン被覆２′を
、引き抜き治具６を用いて引き抜き、膨潤したシリコン
被覆２１を除去する。Usually, the outer periphery of the optical fiber 1 is provided with a primary coating such as a modified silicone and a silicon coating 2 such as a buffer layer, and a second coating 3 is provided on the outer periphery of the silicon coating 2. First, the secondary coating 3 is applied from the optical fiber core wire.
(Fig. 1(a)). Next, when the exposed portion of the optical fiber core wire with the silicone coating 2 is immersed in a container 5 containing an aliphatic or aromatic hydrocarbon solvent 4, the solvent 4 permeates into the silicone coating 2 and the silicone coating 2 is exposed. Therefore, the silicon coating 2 immersed in the container 5 swells and expands in volume, as shown in Figure 1 (
Deform as shown in b). The swollen and kneaded optical fiber core is pulled up from the solvent 4, and the swollen silicone coating 2' is pulled out using the drawing jig 6, and the swollen silicone coating 21 is removed.
次に、本発明で使用する脂肪族系あるいは芳香族系炭化
水素の溶剤４について説明する。第２図にシリコン被覆
材料の基本であるシリコンゴムの、有機溶剤に対する容
積膨張率を示す。Next, the aliphatic or aromatic hydrocarbon solvent 4 used in the present invention will be explained. FIG. 2 shows the volumetric expansion coefficient of silicone rubber, which is the basis of the silicone coating material, against organic solvents.
第２図中、縦軸は各種溶剤に対する容積膨張率であり、
横軸は各種溶剤の溶解度パラメータ（ｓｐ値）である。In Figure 2, the vertical axis is the volume expansion coefficient for various solvents,
The horizontal axis is the solubility parameter (sp value) of various solvents.
尚横軸上に対応するＢＰ値を有する有機溶剤の中で著名
なものを示す。第２図から明らか々ように、シリコンゴ
ムが大きな容積膨張率を示す溶剤はＢＰ値が７〜９を有
するものであシ、この範囲に属する有機溶剤としては前
記脂肪族系炭化水素々いし芳香族系炭化水素が存在する
。これらのうち嬰体的な例としては脂肪族系炭化水素で
はシクロヘキサン、芳香族系炭化水素ではガソリン、石
油ベンジンのような燃料油などが挙げられる。このよう
に上記脂肪族系炭化水素ないし芳香族系炭化水素の溶剤
４はシリコン樹脂に対して大きな容積膨張率を有してい
ることから、従来技術のように、紙等で光ファイバを挾
み込んで、しごくことなくシリコン被覆２を除去できる
ので、作業性。Note that prominent organic solvents having corresponding BP values are shown on the horizontal axis. As is clear from FIG. 2, solvents in which silicone rubber exhibits a large volumetric expansion coefficient have a BP value of 7 to 9, and organic solvents that fall within this range include the aliphatic hydrocarbons, aromatics, etc. Group hydrocarbons exist. Among these, examples of aliphatic hydrocarbons include cyclohexane, and aromatic hydrocarbons include gasoline and fuel oil such as petroleum benzene. As described above, since the aliphatic hydrocarbon or aromatic hydrocarbon solvent 4 has a large coefficient of volumetric expansion relative to silicone resin, it is difficult to sandwich the optical fiber between paper or the like as in the prior art. The silicone coating 2 can be removed without being crowded or squeezing, making it easier to work with.
信頼性面で多大外効果がある。This has a huge effect on reliability.
さらに、本発明を応用して、第１図中の溶剤を入れた容
器５に超音波振動を加えれば溶剤４のシリコン被覆２へ
の膨潤が促進され、作業時間の短縮化が可能となる。Further, by applying the present invention and applying ultrasonic vibration to the container 5 containing the solvent shown in FIG. 1, the swelling of the solvent 4 to the silicone coating 2 is promoted, thereby making it possible to shorten the working time.
以上説明したように、本発明の光ファイバのシリコン被
覆除去法は、簡便な手順で、光ファイバの１次被覆およ
び緩衝層といったシリコン被覆を確実に除去することが
できるので従来の除去方法に比べて格段に作業性がよい
。とくに、シリコン被覆の除去作業者が、光ファイバ１
を指でされることはないため、光ファイバ１の側面およ
び端面が指の汚れなどで汚染される危険性は皆無である
。また、シリコン被覆を指で押えることなく、シリコン
被鴨を除去できるため、作業者の個人差が現れることも
なく、確実にシリコン被覆を除去できるという利点があ
る。As explained above, the optical fiber silicon coating removal method of the present invention can reliably remove the silicon coating such as the optical fiber's primary coating and buffer layer using a simple procedure, compared to conventional removal methods. It has much better workability. In particular, the operator who removes the silicon coating
Since the optical fiber 1 is not touched by fingers, there is no risk of the side surface and end surface of the optical fiber 1 being contaminated by finger dirt or the like. Furthermore, since the silicone coating can be removed without pressing the silicone coating with fingers, there is an advantage that the silicone coating can be reliably removed without showing individual differences among workers.
さらに、シリコン被覆の除去の際に、光ファイバ１に接
触するのは、シリコン被覆のみであることから、光ファ
イバ１の表面に傷を付けることが無い。光フアイバ表面
の傷は強度劣化の大きな原因となるものだけに、シリコ
ン被覆を除去する際、この傷の発生を確実に防止できる
ことは光ファイバの機械強度および信頼性面で極めて大
きな効果を有するものである。Furthermore, since only the silicon coating comes into contact with the optical fiber 1 when the silicon coating is removed, the surface of the optical fiber 1 is not damaged. Since scratches on the optical fiber surface are a major cause of strength deterioration, being able to reliably prevent these scratches from occurring when removing the silicon coating has an extremely large effect on the mechanical strength and reliability of the optical fiber. It is.
以上のように本発明のシリコン被覆除去方法は光フアイ
バ通信網を形成する際に不可欠な光フアイバ心線の接続
においてその作業性、信頼性を顕著に向上することがで
きる。As described above, the silicon coating removal method of the present invention can significantly improve workability and reliability in connecting optical fiber cores, which are essential when forming an optical fiber communication network.
第１図は、本発明に係る除去方法の手順を示す概略図、
第２図はシリコンゴムの各種溶剤に対する容積膨張率を
示すグラフ。
図 面 中、
１は光ファイバ、
２は１次被覆および緩衝層などのシリコン被豊、
２′は膨潤した２のシリコン被覆、
３は２次被覆、
４は脂肪族系あるいは芳香族系炭化水素の溶剤、
５は容器、
６は引き抜き治具である。
第１図
（Ｇ） （ｃ
）（ｂ）FIG. 1 is a schematic diagram showing the steps of the removal method according to the present invention;
FIG. 2 is a graph showing the volume expansion coefficient of silicone rubber with respect to various solvents. In the drawing, 1 is an optical fiber, 2 is a primary coating and a silicon coating such as a buffer layer, 2' is a swollen silicon coating of 2, 3 is a secondary coating, and 4 is an aliphatic or aromatic hydrocarbon. 5 is a container, and 6 is a drawing jig. Figure 1 (G) (c
)(b)
Claims (1)
族あるいは芳香族系炭化水素の溶剤中に浸して前記シリ
コン被覆を膨潤させ、光フアイバ界面から剥離させた後
、前記シリコン被覆を光フアイバ軸方向に引き抜くこと
によシ除去することを特徴とする光ファイバのシリコン
被覆除去方法。The exposed portion of the silicon coating provided on the outer periphery of the optical fiber is immersed in an aliphatic or aromatic hydrocarbon solvent to swell the silicon coating and peeled from the optical fiber interface, and then the silicon coating is removed in the axial direction of the optical fiber. A method for removing a silicon coating from an optical fiber, the method comprising removing the silicon coating by pulling it out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56127502A JPS5828703A (en) | 1981-08-14 | 1981-08-14 | Removing method for silicon coat of optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56127502A JPS5828703A (en) | 1981-08-14 | 1981-08-14 | Removing method for silicon coat of optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5828703A true JPS5828703A (en) | 1983-02-19 |
Family
ID=14961556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56127502A Pending JPS5828703A (en) | 1981-08-14 | 1981-08-14 | Removing method for silicon coat of optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5828703A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2551557A1 (en) * | 1983-09-02 | 1985-03-08 | Kemystetter Jean Luc | Tool for stripping optical fibres. |
| JPS6173903A (en) * | 1984-09-19 | 1986-04-16 | Fujikura Ltd | Removal of coating of optical fiber |
| EP0679912A1 (en) * | 1994-04-27 | 1995-11-02 | Koninklijke KPN N.V. | A method and device for stripping optical fibre ribbons |
| WO2004019103A1 (en) * | 2002-08-22 | 2004-03-04 | Showa Electric Wire & Cable Co., Ltd. | Optical fiber core wire, method of removing coating from optical fiber core wire and process for producing optical fiber part |
| JP2008303313A (en) * | 2007-06-08 | 2008-12-18 | Asahi Kasei Chemicals Corp | Cable cleaner |
| CN104865641A (en) * | 2015-05-27 | 2015-08-26 | 江苏亨通光纤科技有限公司 | Device for removing polyimide-coated optical fiber external coating layer and method thereof |
-
1981
- 1981-08-14 JP JP56127502A patent/JPS5828703A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2551557A1 (en) * | 1983-09-02 | 1985-03-08 | Kemystetter Jean Luc | Tool for stripping optical fibres. |
| JPS6173903A (en) * | 1984-09-19 | 1986-04-16 | Fujikura Ltd | Removal of coating of optical fiber |
| EP0679912A1 (en) * | 1994-04-27 | 1995-11-02 | Koninklijke KPN N.V. | A method and device for stripping optical fibre ribbons |
| NL9400678A (en) * | 1994-04-27 | 1995-12-01 | Nederland Ptt | Method and device for stripping optical fiber ribbons. |
| US5681417A (en) * | 1994-04-27 | 1997-10-28 | Koninklijke Ptt Nederland N.V. | Method and device for stripping optical fibre ribbons |
| WO2004019103A1 (en) * | 2002-08-22 | 2004-03-04 | Showa Electric Wire & Cable Co., Ltd. | Optical fiber core wire, method of removing coating from optical fiber core wire and process for producing optical fiber part |
| JP2008303313A (en) * | 2007-06-08 | 2008-12-18 | Asahi Kasei Chemicals Corp | Cable cleaner |
| CN104865641A (en) * | 2015-05-27 | 2015-08-26 | 江苏亨通光纤科技有限公司 | Device for removing polyimide-coated optical fiber external coating layer and method thereof |
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